| [e16e8f2] | 1 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
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| 2 | "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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| 3 | <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
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| 4 | <head>
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| 5 | <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
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| 6 | <meta name="generator" content="AsciiDoc 8.6.8" />
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| 7 | <title>pxelinux(1)</title>
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| 8 | <style type="text/css">
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| 9 | /* Shared CSS for AsciiDoc xhtml11 and html5 backends */
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| 10 |
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| 11 | /* Default font. */
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| 12 | body {
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| 13 | font-family: Georgia,serif;
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| 14 | }
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| 15 |
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| 16 | /* Title font. */
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| 17 | h1, h2, h3, h4, h5, h6,
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| 18 | div.title, caption.title,
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| 19 | thead, p.table.header,
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| 20 | #toctitle,
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| 21 | #author, #revnumber, #revdate, #revremark,
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| 22 | #footer {
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| 23 | font-family: Arial,Helvetica,sans-serif;
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| 24 | }
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| 25 |
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| 26 | body {
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| 27 | margin: 1em 5% 1em 5%;
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| 28 | }
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| 29 |
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| 30 | a {
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| 31 | color: blue;
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| 32 | text-decoration: underline;
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| 33 | }
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| 34 | a:visited {
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| 35 | color: fuchsia;
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| 36 | }
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| 37 |
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| 38 | em {
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| 39 | font-style: italic;
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| 40 | color: navy;
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| 41 | }
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| 42 |
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| 43 | strong {
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| 44 | font-weight: bold;
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| 45 | color: #083194;
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| 46 | }
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| 47 |
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| 48 | h1, h2, h3, h4, h5, h6 {
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| 49 | color: #527bbd;
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| 50 | margin-top: 1.2em;
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| 51 | margin-bottom: 0.5em;
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| 52 | line-height: 1.3;
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| 53 | }
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| 54 |
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| 55 | h1, h2, h3 {
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| 56 | border-bottom: 2px solid silver;
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| 57 | }
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| 58 | h2 {
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| 59 | padding-top: 0.5em;
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| 60 | }
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| 61 | h3 {
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| 62 | float: left;
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| 63 | }
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| 64 | h3 + * {
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| 65 | clear: left;
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| 66 | }
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| 67 | h5 {
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| 68 | font-size: 1.0em;
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| 69 | }
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| 70 |
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| 71 | div.sectionbody {
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| 72 | margin-left: 0;
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| 73 | }
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| 74 |
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| 75 | hr {
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| 76 | border: 1px solid silver;
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| 77 | }
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| 78 |
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| 79 | p {
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| 80 | margin-top: 0.5em;
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| 81 | margin-bottom: 0.5em;
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| 82 | }
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| 83 |
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| 84 | ul, ol, li > p {
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| 85 | margin-top: 0;
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| 86 | }
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| 87 | ul > li { color: #aaa; }
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| 88 | ul > li > * { color: black; }
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| 89 |
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| 90 | .monospaced, code, pre {
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| 91 | font-family: "Courier New", Courier, monospace;
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| 92 | font-size: inherit;
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| 93 | color: navy;
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| 94 | padding: 0;
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| 95 | margin: 0;
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| 96 | }
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| 97 |
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| 98 |
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| 99 | #author {
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| 100 | color: #527bbd;
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| 101 | font-weight: bold;
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| 102 | font-size: 1.1em;
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| 103 | }
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| 104 | #email {
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| 105 | }
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| 106 | #revnumber, #revdate, #revremark {
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| 107 | }
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| 108 |
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| 109 | #footer {
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| 110 | font-size: small;
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| 111 | border-top: 2px solid silver;
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| 112 | padding-top: 0.5em;
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| 113 | margin-top: 4.0em;
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| 114 | }
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| 115 | #footer-text {
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| 116 | float: left;
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| 117 | padding-bottom: 0.5em;
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| 118 | }
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| 119 | #footer-badges {
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| 120 | float: right;
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| 121 | padding-bottom: 0.5em;
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| 122 | }
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| 123 |
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| 124 | #preamble {
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| 125 | margin-top: 1.5em;
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| 126 | margin-bottom: 1.5em;
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| 127 | }
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| 128 | div.imageblock, div.exampleblock, div.verseblock,
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| 129 | div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
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| 130 | div.admonitionblock {
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| 131 | margin-top: 1.0em;
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| 132 | margin-bottom: 1.5em;
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| 133 | }
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| 134 | div.admonitionblock {
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| 135 | margin-top: 2.0em;
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| 136 | margin-bottom: 2.0em;
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| 137 | margin-right: 10%;
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| 138 | color: #606060;
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| 139 | }
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| 140 |
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| 141 | div.content { /* Block element content. */
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| 142 | padding: 0;
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| 143 | }
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| 144 |
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| 145 | /* Block element titles. */
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| 146 | div.title, caption.title {
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| 147 | color: #527bbd;
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| 148 | font-weight: bold;
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| 149 | text-align: left;
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| 150 | margin-top: 1.0em;
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| 151 | margin-bottom: 0.5em;
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| 152 | }
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| 153 | div.title + * {
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| 154 | margin-top: 0;
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| 155 | }
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| 156 |
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| 157 | td div.title:first-child {
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| 158 | margin-top: 0.0em;
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| 159 | }
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| 160 | div.content div.title:first-child {
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| 161 | margin-top: 0.0em;
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| 162 | }
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| 163 | div.content + div.title {
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| 164 | margin-top: 0.0em;
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| 165 | }
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| 166 |
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| 167 | div.sidebarblock > div.content {
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| 168 | background: #ffffee;
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| 169 | border: 1px solid #dddddd;
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| 170 | border-left: 4px solid #f0f0f0;
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| 171 | padding: 0.5em;
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| 172 | }
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| 173 |
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| 174 | div.listingblock > div.content {
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| 175 | border: 1px solid #dddddd;
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| 176 | border-left: 5px solid #f0f0f0;
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| 177 | background: #f8f8f8;
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| 178 | padding: 0.5em;
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| 179 | }
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| 180 |
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| 181 | div.quoteblock, div.verseblock {
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| 182 | padding-left: 1.0em;
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| 183 | margin-left: 1.0em;
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| 184 | margin-right: 10%;
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| 185 | border-left: 5px solid #f0f0f0;
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| 186 | color: #888;
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| 187 | }
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| 188 |
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| 189 | div.quoteblock > div.attribution {
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| 190 | padding-top: 0.5em;
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| 191 | text-align: right;
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| 192 | }
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| 193 |
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| 194 | div.verseblock > pre.content {
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| 195 | font-family: inherit;
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| 196 | font-size: inherit;
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| 197 | }
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| 198 | div.verseblock > div.attribution {
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| 199 | padding-top: 0.75em;
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| 200 | text-align: left;
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| 201 | }
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| 202 | /* DEPRECATED: Pre version 8.2.7 verse style literal block. */
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| 203 | div.verseblock + div.attribution {
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| 204 | text-align: left;
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| 205 | }
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| 206 |
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| 207 | div.admonitionblock .icon {
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| 208 | vertical-align: top;
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| 209 | font-size: 1.1em;
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| 210 | font-weight: bold;
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| 211 | text-decoration: underline;
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| 212 | color: #527bbd;
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| 213 | padding-right: 0.5em;
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| 214 | }
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| 215 | div.admonitionblock td.content {
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| 216 | padding-left: 0.5em;
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| 217 | border-left: 3px solid #dddddd;
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| 218 | }
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| 219 |
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| 220 | div.exampleblock > div.content {
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| 221 | border-left: 3px solid #dddddd;
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| 222 | padding-left: 0.5em;
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| 223 | }
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| 224 |
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| 225 | div.imageblock div.content { padding-left: 0; }
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| 226 | span.image img { border-style: none; }
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| 227 | a.image:visited { color: white; }
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| 228 |
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| 229 | dl {
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| 230 | margin-top: 0.8em;
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| 231 | margin-bottom: 0.8em;
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| 232 | }
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| 233 | dt {
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| 234 | margin-top: 0.5em;
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| 235 | margin-bottom: 0;
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| 236 | font-style: normal;
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| 237 | color: navy;
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| 238 | }
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| 239 | dd > *:first-child {
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| 240 | margin-top: 0.1em;
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| 241 | }
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| 242 |
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| 243 | ul, ol {
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| 244 | list-style-position: outside;
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| 245 | }
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| 246 | ol.arabic {
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| 247 | list-style-type: decimal;
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| 248 | }
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| 249 | ol.loweralpha {
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| 250 | list-style-type: lower-alpha;
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| 251 | }
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| 252 | ol.upperalpha {
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| 253 | list-style-type: upper-alpha;
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| 254 | }
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| 255 | ol.lowerroman {
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| 256 | list-style-type: lower-roman;
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| 257 | }
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| 258 | ol.upperroman {
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| 259 | list-style-type: upper-roman;
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| 260 | }
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| 261 |
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| 262 | div.compact ul, div.compact ol,
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| 263 | div.compact p, div.compact p,
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| 264 | div.compact div, div.compact div {
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| 265 | margin-top: 0.1em;
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| 266 | margin-bottom: 0.1em;
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| 267 | }
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| 268 |
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| 269 | tfoot {
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| 270 | font-weight: bold;
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| 271 | }
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| 272 | td > div.verse {
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| 273 | white-space: pre;
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| 274 | }
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| 275 |
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| 276 | div.hdlist {
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| 277 | margin-top: 0.8em;
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| 278 | margin-bottom: 0.8em;
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| 279 | }
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| 280 | div.hdlist tr {
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| 281 | padding-bottom: 15px;
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| 282 | }
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| 283 | dt.hdlist1.strong, td.hdlist1.strong {
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| 284 | font-weight: bold;
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| 285 | }
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| 286 | td.hdlist1 {
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| 287 | vertical-align: top;
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| 288 | font-style: normal;
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| 289 | padding-right: 0.8em;
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| 290 | color: navy;
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| 291 | }
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| 292 | td.hdlist2 {
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| 293 | vertical-align: top;
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| 294 | }
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| 295 | div.hdlist.compact tr {
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| 296 | margin: 0;
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| 297 | padding-bottom: 0;
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| 298 | }
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| 299 |
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| 300 | .comment {
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| 301 | background: yellow;
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| 302 | }
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| 303 |
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| 304 | .footnote, .footnoteref {
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| 305 | font-size: 0.8em;
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| 306 | }
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| 307 |
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| 308 | span.footnote, span.footnoteref {
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| 309 | vertical-align: super;
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| 310 | }
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| 311 |
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| 312 | #footnotes {
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| 313 | margin: 20px 0 20px 0;
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| 314 | padding: 7px 0 0 0;
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| 315 | }
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| 316 |
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| 317 | #footnotes div.footnote {
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| 318 | margin: 0 0 5px 0;
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| 319 | }
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| 320 |
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| 321 | #footnotes hr {
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| 322 | border: none;
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| 323 | border-top: 1px solid silver;
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| 324 | height: 1px;
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| 325 | text-align: left;
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| 326 | margin-left: 0;
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| 327 | width: 20%;
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| 328 | min-width: 100px;
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| 329 | }
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| 330 |
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| 331 | div.colist td {
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| 332 | padding-right: 0.5em;
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| 333 | padding-bottom: 0.3em;
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| 334 | vertical-align: top;
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| 335 | }
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| 336 | div.colist td img {
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| 337 | margin-top: 0.3em;
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| 338 | }
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| 339 |
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| 340 | @media print {
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| 341 | #footer-badges { display: none; }
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| 342 | }
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| 343 |
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| 344 | #toc {
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| 345 | margin-bottom: 2.5em;
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| 346 | }
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| 347 |
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| 348 | #toctitle {
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| 349 | color: #527bbd;
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| 350 | font-size: 1.1em;
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| 351 | font-weight: bold;
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| 352 | margin-top: 1.0em;
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| 353 | margin-bottom: 0.1em;
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| 354 | }
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| 355 |
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| 356 | div.toclevel0, div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
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| 357 | margin-top: 0;
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| 358 | margin-bottom: 0;
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| 359 | }
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| 360 | div.toclevel2 {
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| 361 | margin-left: 2em;
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| 362 | font-size: 0.9em;
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| 363 | }
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| 364 | div.toclevel3 {
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| 365 | margin-left: 4em;
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| 366 | font-size: 0.9em;
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| 367 | }
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| 368 | div.toclevel4 {
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| 369 | margin-left: 6em;
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| 370 | font-size: 0.9em;
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| 371 | }
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| 372 |
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| 373 | span.aqua { color: aqua; }
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| 374 | span.black { color: black; }
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| 375 | span.blue { color: blue; }
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| 376 | span.fuchsia { color: fuchsia; }
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| 377 | span.gray { color: gray; }
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| 378 | span.green { color: green; }
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| 379 | span.lime { color: lime; }
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| 380 | span.maroon { color: maroon; }
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| 381 | span.navy { color: navy; }
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| 382 | span.olive { color: olive; }
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| 383 | span.purple { color: purple; }
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| 384 | span.red { color: red; }
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| 385 | span.silver { color: silver; }
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| 386 | span.teal { color: teal; }
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| 387 | span.white { color: white; }
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| 388 | span.yellow { color: yellow; }
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| 389 |
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| 390 | span.aqua-background { background: aqua; }
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| 391 | span.black-background { background: black; }
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| 392 | span.blue-background { background: blue; }
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| 393 | span.fuchsia-background { background: fuchsia; }
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| 394 | span.gray-background { background: gray; }
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| 395 | span.green-background { background: green; }
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| 396 | span.lime-background { background: lime; }
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| 397 | span.maroon-background { background: maroon; }
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| 398 | span.navy-background { background: navy; }
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| 399 | span.olive-background { background: olive; }
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| 400 | span.purple-background { background: purple; }
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| 401 | span.red-background { background: red; }
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| 402 | span.silver-background { background: silver; }
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| 403 | span.teal-background { background: teal; }
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| 404 | span.white-background { background: white; }
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| 405 | span.yellow-background { background: yellow; }
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| 406 |
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| 407 | span.big { font-size: 2em; }
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| 408 | span.small { font-size: 0.6em; }
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| 409 |
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| 410 | span.underline { text-decoration: underline; }
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| 411 | span.overline { text-decoration: overline; }
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| 412 | span.line-through { text-decoration: line-through; }
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| 413 |
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| 414 | div.unbreakable { page-break-inside: avoid; }
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| 415 |
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| 416 |
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| 417 | /*
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| 418 | * xhtml11 specific
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| 419 | *
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| 420 | * */
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| 421 |
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| 422 | div.tableblock {
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| 423 | margin-top: 1.0em;
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| 424 | margin-bottom: 1.5em;
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| 425 | }
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| 426 | div.tableblock > table {
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| 427 | border: 3px solid #527bbd;
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| 428 | }
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| 429 | thead, p.table.header {
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| 430 | font-weight: bold;
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| 431 | color: #527bbd;
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| 432 | }
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| 433 | p.table {
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| 434 | margin-top: 0;
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| 435 | }
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| 436 | /* Because the table frame attribute is overriden by CSS in most browsers. */
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| 437 | div.tableblock > table[frame="void"] {
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| 438 | border-style: none;
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| 439 | }
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| 440 | div.tableblock > table[frame="hsides"] {
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| 441 | border-left-style: none;
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| 442 | border-right-style: none;
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| 443 | }
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| 444 | div.tableblock > table[frame="vsides"] {
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| 445 | border-top-style: none;
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| 446 | border-bottom-style: none;
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| 447 | }
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| 448 |
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| 449 |
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| 450 | /*
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| 451 | * html5 specific
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| 452 | *
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| 453 | * */
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| 454 |
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| 455 | table.tableblock {
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| 456 | margin-top: 1.0em;
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| 457 | margin-bottom: 1.5em;
|
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| 458 | }
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| 459 | thead, p.tableblock.header {
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| 460 | font-weight: bold;
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| 461 | color: #527bbd;
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| 462 | }
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| 463 | p.tableblock {
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| 464 | margin-top: 0;
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| 465 | }
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| 472 | }
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| 475 | padding: 4px;
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| 479 |
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| 491 |
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| 492 | th.tableblock.halign-left, td.tableblock.halign-left {
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| 493 | text-align: left;
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| 494 | }
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| 495 | th.tableblock.halign-center, td.tableblock.halign-center {
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| 497 | }
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| 498 | th.tableblock.halign-right, td.tableblock.halign-right {
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| 501 |
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| 502 | th.tableblock.valign-top, td.tableblock.valign-top {
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| 505 | th.tableblock.valign-middle, td.tableblock.valign-middle {
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| 507 | }
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| 508 | th.tableblock.valign-bottom, td.tableblock.valign-bottom {
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|---|
| 509 | vertical-align: bottom;
|
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| 510 | }
|
|---|
| 511 |
|
|---|
| 512 |
|
|---|
| 513 | /*
|
|---|
| 514 | * manpage specific
|
|---|
| 515 | *
|
|---|
| 516 | * */
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| 517 |
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|---|
| 518 | body.manpage h1 {
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| 519 | padding-top: 0.5em;
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| 520 | padding-bottom: 0.5em;
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| 521 | border-top: 2px solid silver;
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| 522 | border-bottom: 2px solid silver;
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| 523 | }
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| 524 | body.manpage h2 {
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| 525 | border-style: none;
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| 526 | }
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|---|
| 527 | body.manpage div.sectionbody {
|
|---|
| 528 | margin-left: 3em;
|
|---|
| 529 | }
|
|---|
| 530 |
|
|---|
| 531 | @media print {
|
|---|
| 532 | body.manpage div#toc { display: none; }
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|---|
| 533 | }
|
|---|
| 534 |
|
|---|
| 535 |
|
|---|
| 536 | </style>
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| 537 | <script type="text/javascript">
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| 538 | /*<+'])');
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| 581 | // Function that scans the DOM tree for header elements (the DOM2
|
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| 582 | // nodeIterator API would be a better technique but not supported by all
|
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| 583 | // browsers).
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| 584 | var iterate = function (el) {
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| 585 | for (var i = el.firstChild; i != null; i = i.nextSibling) {
|
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| 586 | if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
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| 587 | var mo = re.exec(i.tagName);
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| 588 | if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
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| 589 | result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
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| 590 | }
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|---|
| 591 | iterate(i);
|
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| 592 | }
|
|---|
| 593 | }
|
|---|
| 594 | }
|
|---|
| 595 | iterate(el);
|
|---|
| 596 | return result;
|
|---|
| 597 | }
|
|---|
| 598 |
|
|---|
| 599 | var toc = document.getElementById("toc");
|
|---|
| 600 | if (!toc) {
|
|---|
| 601 | return;
|
|---|
| 602 | }
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|---|
| 603 |
|
|---|
| 604 | // Delete existing TOC entries in case we're reloading the TOC.
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|---|
| 605 | var tocEntriesToRemove = [];
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|---|
| 606 | var i;
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|---|
| 607 | for (i = 0; i < toc.childNodes.length; i++) {
|
|---|
| 608 | var entry = toc.childNodes[i];
|
|---|
| 609 | if (entry.nodeName.toLowerCase() == 'div'
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|---|
| 610 | && entry.getAttribute("class")
|
|---|
| 611 | && entry.getAttribute("class").match(/^toclevel/))
|
|---|
| 612 | tocEntriesToRemove.push(entry);
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|---|
| 613 | }
|
|---|
| 614 | for (i = 0; i < tocEntriesToRemove.length; i++) {
|
|---|
| 615 | toc.removeChild(tocEntriesToRemove[i]);
|
|---|
| 616 | }
|
|---|
| 617 |
|
|---|
| 618 | // Rebuild TOC entries.
|
|---|
| 619 | var entries = tocEntries(document.getElementById("content"), toclevels);
|
|---|
| 620 | for (var i = 0; i < entries.length; ++i) {
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|---|
| 621 | var entry = entries[i];
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|---|
| 622 | if (entry.element.id == "")
|
|---|
| 623 | entry.element.id = "_toc_" + i;
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|---|
| 624 | var a = document.createElement("a");
|
|---|
| 625 | a.href = "#" + entry.element.id;
|
|---|
| 626 | a.appendChild(document.createTextNode(entry.text));
|
|---|
| 627 | var div = document.createElement("div");
|
|---|
| 628 | div.appendChild(a);
|
|---|
| 629 | div.className = "toclevel" + entry.toclevel;
|
|---|
| 630 | toc.appendChild(div);
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|---|
| 631 | }
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|---|
| 632 | if (entries.length == 0)
|
|---|
| 633 | toc.parentNode.removeChild(toc);
|
|---|
| 634 | },
|
|---|
| 635 |
|
|---|
| 636 |
|
|---|
| 637 | /////////////////////////////////////////////////////////////////////
|
|---|
| 638 | // Footnotes generator
|
|---|
| 639 | /////////////////////////////////////////////////////////////////////
|
|---|
| 640 |
|
|---|
| 641 | /* Based on footnote generation code from:
|
|---|
| 642 | * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
|
|---|
| 643 | */
|
|---|
| 644 |
|
|---|
| 645 | footnotes: function () {
|
|---|
| 646 | // Delete existing footnote entries in case we're reloading the footnodes.
|
|---|
| 647 | var i;
|
|---|
| 648 | var noteholder = document.getElementById("footnotes");
|
|---|
| 649 | if (!noteholder) {
|
|---|
| 650 | return;
|
|---|
| 651 | }
|
|---|
| 652 | var entriesToRemove = [];
|
|---|
| 653 | for (i = 0; i < noteholder.childNodes.length; i++) {
|
|---|
| 654 | var entry = noteholder.childNodes[i];
|
|---|
| 655 | if (entry.nodeName.toLowerCase() == 'div' && entry.getAttribute("class") == "footnote")
|
|---|
| 656 | entriesToRemove.push(entry);
|
|---|
| 657 | }
|
|---|
| 658 | for (i = 0; i < entriesToRemove.length; i++) {
|
|---|
| 659 | noteholder.removeChild(entriesToRemove[i]);
|
|---|
| 660 | }
|
|---|
| 661 |
|
|---|
| 662 | // Rebuild footnote entries.
|
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| 663 | var cont = document.getElementById("content");
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| 664 | var spans = cont.getElementsByTagName("span");
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| 665 | var refs = {};
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| 667 | for (i=0; i<spans.length; i++) {
|
|---|
| 668 | if (spans[i].className == "footnote") {
|
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| 669 | n++;
|
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| 670 | var note = spans[i].getAttribute("data-note");
|
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| 671 | if (!note) {
|
|---|
| 672 | // Use [\s\S] in place of . so multi-line matches work.
|
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| 673 | // Because JavaScript has no s (dotall) regex flag.
|
|---|
| 674 | note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
|
|---|
| 675 | spans[i].innerHTML =
|
|---|
| 676 | "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
|
|---|
| 677 | "' title='View footnote' class='footnote'>" + n + "</a>]";
|
|---|
| 678 | spans[i].setAttribute("data-note", note);
|
|---|
| 679 | }
|
|---|
| 680 | noteholder.innerHTML +=
|
|---|
| 681 | "<div class='footnote' id='_footnote_" + n + "'>" +
|
|---|
| 682 | "<a href='#_footnoteref_" + n + "' title='Return to text'>" +
|
|---|
| 683 | n + "</a>. " + note + "</div>";
|
|---|
| 684 | var id =spans[i].getAttribute("id");
|
|---|
| 685 | if (id != null) refs["#"+id] = n;
|
|---|
| 686 | }
|
|---|
| 687 | }
|
|---|
| 688 | if (n == 0)
|
|---|
| 689 | noteholder.parentNode.removeChild(noteholder);
|
|---|
| 690 | else {
|
|---|
| 691 | // Process footnoterefs.
|
|---|
| 692 | for (i=0; i<spans.length; i++) {
|
|---|
| 693 | if (spans[i].className == "footnoteref") {
|
|---|
| 694 | var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
|
|---|
| 695 | href = href.match(/#.*/)[0]; // Because IE return full URL.
|
|---|
| 696 | n = refs[href];
|
|---|
| 697 | spans[i].innerHTML =
|
|---|
| 698 | "[<a href='#_footnote_" + n +
|
|---|
| 699 | "' title='View footnote' class='footnote'>" + n + "</a>]";
|
|---|
| 700 | }
|
|---|
| 701 | }
|
|---|
| 702 | }
|
|---|
| 703 | },
|
|---|
| 704 |
|
|---|
| 705 | install: function(toclevels) {
|
|---|
| 706 | var timerId;
|
|---|
| 707 |
|
|---|
| 708 | function reinstall() {
|
|---|
| 709 | asciidoc.footnotes();
|
|---|
| 710 | if (toclevels) {
|
|---|
| 711 | asciidoc.toc(toclevels);
|
|---|
| 712 | }
|
|---|
| 713 | }
|
|---|
| 714 |
|
|---|
| 715 | function reinstallAndRemoveTimer() {
|
|---|
| 716 | clearInterval(timerId);
|
|---|
| 717 | reinstall();
|
|---|
| 718 | }
|
|---|
| 719 |
|
|---|
| 720 | timerId = setInterval(reinstall, 500);
|
|---|
| 721 | if (document.addEventListener)
|
|---|
| 722 | document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false);
|
|---|
| 723 | else
|
|---|
| 724 | window.onload = reinstallAndRemoveTimer;
|
|---|
| 725 | }
|
|---|
| 726 |
|
|---|
| 727 | }
|
|---|
| 728 | asciidoc.install();
|
|---|
| 729 | /*]]>*/
|
|---|
| 730 | </script>
|
|---|
| 731 | </head>
|
|---|
| 732 | <body class="manpage">
|
|---|
| 733 | <div id="header">
|
|---|
| 734 | <h1>
|
|---|
| 735 | pxelinux(1) Manual Page
|
|---|
| 736 | </h1>
|
|---|
| 737 | <h2>NAME</h2>
|
|---|
| 738 | <div class="sectionbody">
|
|---|
| 739 | <p>pxelinux -
|
|---|
| 740 | The Syslinux derivative PXELINUX for PXE network booting
|
|---|
| 741 | </p>
|
|---|
| 742 | </div>
|
|---|
| 743 | </div>
|
|---|
| 744 | <div id="content">
|
|---|
| 745 | <div class="sect1">
|
|---|
| 746 | <h2 id="_synopsis">SYNOPSIS</h2>
|
|---|
| 747 | <div class="sectionbody">
|
|---|
| 748 | <div class="verseblock">
|
|---|
| 749 | <pre class="content">pxelinux.0</pre>
|
|---|
| 750 | <div class="attribution">
|
|---|
| 751 | </div></div>
|
|---|
| 752 | </div>
|
|---|
| 753 | </div>
|
|---|
| 754 | <div class="sect1">
|
|---|
| 755 | <h2 id="_description">DESCRIPTION</h2>
|
|---|
| 756 | <div class="sectionbody">
|
|---|
| 757 | <div class="paragraph"><p><strong>PXELINUX</strong> is a Syslinux derivative, for booting Linux off a network
|
|---|
| 758 | server, using a network ROM conforming to the Intel PXE (Pre-Execution
|
|---|
| 759 | Environment) specification. <strong>PXELINUX</strong> is <em>*not*</em> a program that is
|
|---|
| 760 | intended to be flashed or burned into a PROM on the network card; if
|
|---|
| 761 | you want that, check out Etherboot (<a href="http://www.etherboot.org/">http://www.etherboot.org/</a>).
|
|---|
| 762 | Etherboot 5.4 or later can also be used to create a PXE-compliant boot
|
|---|
| 763 | PROM for many network cards.</p></div>
|
|---|
| 764 | <div class="paragraph"><p>PXELINUX generally requires that full file pathnames are 127 characters or shorter in length.</p></div>
|
|---|
| 765 | </div>
|
|---|
| 766 | </div>
|
|---|
| 767 | <div class="sect1">
|
|---|
| 768 | <h2 id="_current_directory">CURRENT DIRECTORY</h2>
|
|---|
| 769 | <div class="sectionbody">
|
|---|
| 770 | <div class="paragraph"><p>The initial current working directory is either as supplied by DHCP
|
|---|
| 771 | option 210 (pxelinux.pathprefix), the hardcoded path-prefix or the
|
|---|
| 772 | parent directory of the PXELINUX file, as indicated by DHCP fields
|
|---|
| 773 | <em>sname</em> and <em>file</em> (sname="192.168.2.3" and file="boot/pxelinux.0"
|
|---|
| 774 | results in "tftp://192.168.2.3/boot/", "192.168.2.3::boot/" in older
|
|---|
| 775 | PXELINUX format) with precedence specified under <strong>OPTIONS</strong>.</p></div>
|
|---|
| 776 | <div class="paragraph"><p>All unqualified filenames are relative to the current directory.</p></div>
|
|---|
| 777 | </div>
|
|---|
| 778 | </div>
|
|---|
| 779 | <div class="sect1">
|
|---|
| 780 | <h2 id="_configuration">CONFIGURATION</h2>
|
|---|
| 781 | <div class="sectionbody">
|
|---|
| 782 | <div class="paragraph"><p>See <strong>syslinux.cfg</strong>(5) for the format of the contents.</p></div>
|
|---|
| 783 | <div class="paragraph"><p>Because more than one system may be booted from the same server, the
|
|---|
| 784 | configuration file name depends on the IP address of the booting
|
|---|
| 785 | machine. After attempting the file as specified in the DHCP or
|
|---|
| 786 | hardcoded options, PXELINUX will probe the following paths, prefixed
|
|---|
| 787 | with "pxelinux.cfg/", under the initial current working directory:</p></div>
|
|---|
| 788 | <div class="ulist"><ul>
|
|---|
| 789 | <li>
|
|---|
| 790 | <p>
|
|---|
| 791 | The client UUID if provided by the PXE stack (note, some BIOSes don’t
|
|---|
| 792 | have a valid UUID, and you might end up with something like all 1’s.)
|
|---|
| 793 | This is in the standard UUID format using lower case hexadecimal digits,
|
|---|
| 794 | e.g. b8945908-d6a6-41a9-611d-74a6ab80b83d.
|
|---|
| 795 | </p>
|
|---|
| 796 | </li>
|
|---|
| 797 | <li>
|
|---|
| 798 | <p>
|
|---|
| 799 | The hardware type (using its ARP type code) and address, all in lower
|
|---|
| 800 | case hexadecimal with dash separators; for example, for an Ethernet (ARP
|
|---|
| 801 | type 1) with address 88:99:AA:BB:CC:DD it would search for the filename
|
|---|
| 802 | 01-88-99-aa-bb-cc-dd.
|
|---|
| 803 | </p>
|
|---|
| 804 | </li>
|
|---|
| 805 | <li>
|
|---|
| 806 | <p>
|
|---|
| 807 | The client’s IPv4 address in upper-case hexidecimal (ie 192.168.2.91
|
|---|
| 808 | → C0A8025B; you can use the included progam "gethostip" to compute the
|
|---|
| 809 | hexadecimal IP address for any host.) followed by removing characters,
|
|---|
| 810 | one at a time, from the end.
|
|---|
| 811 | </p>
|
|---|
| 812 | </li>
|
|---|
| 813 | <li>
|
|---|
| 814 | <p>
|
|---|
| 815 | "default"
|
|---|
| 816 | </p>
|
|---|
| 817 | </li>
|
|---|
| 818 | </ul></div>
|
|---|
| 819 | <div class="paragraph"><p>Starting in release 3.20, if PXELINUX can not find a configuration file,
|
|---|
| 820 | it will reboot after the timeout interval has expired. This keeps a
|
|---|
| 821 | machine from getting stuck indefinitely due to a boot server failure.</p></div>
|
|---|
| 822 | </div>
|
|---|
| 823 | </div>
|
|---|
| 824 | <div class="sect1">
|
|---|
| 825 | <h2 id="_options">OPTIONS</h2>
|
|---|
| 826 | <div class="sectionbody">
|
|---|
| 827 | <div class="paragraph"><p><strong>PXELINUX</strong> (starting with version 1.62) supports the following
|
|---|
| 828 | nonstandard DHCP options, which depending on your DHCP server you may be
|
|---|
| 829 | able to use to customize the specific behaviour of <strong>PXELINUX</strong>. See RFC
|
|---|
| 830 | 5071 for some additional information about these options. Options for
|
|---|
| 831 | <strong>PXELINUX</strong> can be specified by DHCP options or hardcoded into the
|
|---|
| 832 | binary.</p></div>
|
|---|
| 833 | <div class="sect2">
|
|---|
| 834 | <h3 id="_option_priority">Option Priority</h3>
|
|---|
| 835 | <div class="paragraph"><p>Hardcoded after-options are applied after DHCP options (and overrride)
|
|---|
| 836 | while hardcoded before-options are applied prior to DHCP options and
|
|---|
| 837 | default behavior takes the lowest priority.</p></div>
|
|---|
| 838 | </div>
|
|---|
| 839 | <div class="sect2">
|
|---|
| 840 | <h3 id="_dhcp_options">DHCP options</h3>
|
|---|
| 841 | <div class="dlist"><dl>
|
|---|
| 842 | <dt class="hdlist1">
|
|---|
| 843 | <strong>Option 208</strong> (pxelinux.magic)
|
|---|
| 844 | </dt>
|
|---|
| 845 | <dd>
|
|---|
| 846 | <p>
|
|---|
| 847 | Earlier versions of <strong>PXELINUX</strong> required this to be set to F1:00:74:7E
|
|---|
| 848 | (241.0.116.126) for <strong>PXELINUX</strong> to recognize any special DHCP options
|
|---|
| 849 | whatsoever. As of <strong>PXELINUX</strong> 3.55, this option is deprecated and is no
|
|---|
| 850 | longer required.
|
|---|
| 851 | </p>
|
|---|
| 852 | </dd>
|
|---|
| 853 | <dt class="hdlist1">
|
|---|
| 854 | <strong>Option 209</strong> (pxelinux.configfile)
|
|---|
| 855 | </dt>
|
|---|
| 856 | <dd>
|
|---|
| 857 | <p>
|
|---|
| 858 | Specifies the initial <strong>PXELINUX</strong> configuration file name which may be
|
|---|
| 859 | qualified or unqualified.
|
|---|
| 860 | </p>
|
|---|
| 861 | </dd>
|
|---|
| 862 | <dt class="hdlist1">
|
|---|
| 863 | <strong>Option 210</strong> (pxelinux.pathprefix)
|
|---|
| 864 | </dt>
|
|---|
| 865 | <dd>
|
|---|
| 866 | <p>
|
|---|
| 867 | Specifies the <strong>PXELINUX</strong> common path prefix, instead of deriving it from
|
|---|
| 868 | the boot file name. This almost certainly needs to end in whatever
|
|---|
| 869 | character the TFTP server OS uses as a pathname separator, e.g. slash
|
|---|
| 870 | (/) for Unix.
|
|---|
| 871 | </p>
|
|---|
| 872 | </dd>
|
|---|
| 873 | <dt class="hdlist1">
|
|---|
| 874 | <strong>Option 211</strong> (pxelinux.reboottime)
|
|---|
| 875 | </dt>
|
|---|
| 876 | <dd>
|
|---|
| 877 | <p>
|
|---|
| 878 | Specifies, in seconds, the time to wait before reboot in the event of
|
|---|
| 879 | TFTP failure. 0 means wait "forever" (in reality, it waits
|
|---|
| 880 | approximately 136 years.)
|
|---|
| 881 | </p>
|
|---|
| 882 | </dd>
|
|---|
| 883 | </dl></div>
|
|---|
| 884 | </div>
|
|---|
| 885 | <div class="sect2">
|
|---|
| 886 | <h3 id="_hardcoded_options">Hardcoded options</h3>
|
|---|
| 887 | <div class="paragraph"><p>Since version 3.83, the program "pxelinux-options" can be used to
|
|---|
| 888 | hard-code DHCP options into the pxelinux.0 image file; this is
|
|---|
| 889 | sometimes useful when the DHCP server is under different
|
|---|
| 890 | administrative control. Hardcoded options</p></div>
|
|---|
| 891 | <div class="literalblock">
|
|---|
| 892 | <div class="content">
|
|---|
| 893 | <pre><code> 6 => 'domain-name-servers',
|
|---|
| 894 | 15 => 'domain-name',
|
|---|
| 895 | 54 => 'next-server',
|
|---|
| 896 | 209 => 'config-file',
|
|---|
| 897 | 210 => 'path-prefix',
|
|---|
| 898 | 211 => 'reboottime'</code></pre>
|
|---|
| 899 | </div></div>
|
|---|
| 900 | </div>
|
|---|
| 901 | </div>
|
|---|
| 902 | </div>
|
|---|
| 903 | <div class="sect1">
|
|---|
| 904 | <h2 id="_http_ftp">HTTP/FTP</h2>
|
|---|
| 905 | <div class="sectionbody">
|
|---|
| 906 | <div class="paragraph"><p>Since version 5.10, a special PXELINUX binary, lpxelinux.0, natively
|
|---|
| 907 | supports HTTP and FTP transfers, greatly increasing load speed and
|
|---|
| 908 | allowing for standard HTTP scripts to present PXELINUX’s configuration
|
|---|
| 909 | file. To use http or ftp, use standard URL syntax as filename; use the
|
|---|
| 910 | DHCP options below to transmit a suitable URL prefix to the client, or
|
|---|
| 911 | use the "pxelinux-options" tool provided in the utils directory to
|
|---|
| 912 | program it directly into the lpxelinux.0 file.</p></div>
|
|---|
| 913 | </div>
|
|---|
| 914 | </div>
|
|---|
| 915 | <div class="sect1">
|
|---|
| 916 | <h2 id="_filename_syntax">FILENAME SYNTAX</h2>
|
|---|
| 917 | <div class="sectionbody">
|
|---|
| 918 | <div class="paragraph"><p>PXELINUX supports the following special pathname conventions:</p></div>
|
|---|
| 919 | <div class="dlist"><dl>
|
|---|
| 920 | <dt class="hdlist1">
|
|---|
| 921 | <strong>::filename</strong>
|
|---|
| 922 | </dt>
|
|---|
| 923 | <dd>
|
|---|
| 924 | <p>
|
|---|
| 925 | Suppresses the common filename prefix, i.e. passes the string "filename"
|
|---|
| 926 | unmodified to the server.
|
|---|
| 927 | </p>
|
|---|
| 928 | </dd>
|
|---|
| 929 | <dt class="hdlist1">
|
|---|
| 930 | <strong>IP address::filename</strong> (e.g. 192.168.2.3::filename)
|
|---|
| 931 | </dt>
|
|---|
| 932 | <dd>
|
|---|
| 933 | <p>
|
|---|
| 934 | Suppresses the common filename prefix, <strong>and</strong> sends a request to an alternate TFTP server. Instead of an IP address, a DNS name can be used. It will be assumed to be fully qualified if it contains dots; otherwise the local domain as reported by the DHCP server (option 15) will be added.
|
|---|
| 935 | </p>
|
|---|
| 936 | </dd>
|
|---|
| 937 | </dl></div>
|
|---|
| 938 | <div class="paragraph"><p>:: was chosen because it is unlikely to conflict with operating system
|
|---|
| 939 | usage. However, if you happen to have an environment for which the
|
|---|
| 940 | special treatment of :: is a problem, please contact the Syslinux
|
|---|
| 941 | mailing list.</p></div>
|
|---|
| 942 | <div class="paragraph"><p>Since version 4.00, PXELINUX also supports standard URL syntax.</p></div>
|
|---|
| 943 | </div>
|
|---|
| 944 | </div>
|
|---|
| 945 | <div class="sect1">
|
|---|
| 946 | <h2 id="_keeppxe">KEEPPXE</h2>
|
|---|
| 947 | <div class="sectionbody">
|
|---|
| 948 | <div class="paragraph"><p>Normally, PXELINUX will unload the PXE and UNDI stacks before invoking
|
|---|
| 949 | the kernel. In special circumstances (for example, when using MEMDISK
|
|---|
| 950 | to boot an operating system with an UNDI network driver) it might be
|
|---|
| 951 | desirable to keep the PXE stack in memory. If the option "keeppxe"
|
|---|
| 952 | is given on the kernel command line, PXELINUX will keep the PXE and
|
|---|
| 953 | UNDI stacks in memory. (If you don’t know what this means, you
|
|---|
| 954 | probably don’t need it.)</p></div>
|
|---|
| 955 | </div>
|
|---|
| 956 | </div>
|
|---|
| 957 | <div class="sect1">
|
|---|
| 958 | <h2 id="_examples">EXAMPLES</h2>
|
|---|
| 959 | <div class="sectionbody">
|
|---|
| 960 | <div class="sect2">
|
|---|
| 961 | <h3 id="_configuration_filename">Configuration filename</h3>
|
|---|
| 962 | <div class="paragraph"><p>For DHCP siaddr 192.168.2.3, file <em>mybootdir/pxelinux.0</em>, client UUID
|
|---|
| 963 | b8945908-d6a6-41a9-611d-74a6ab80b83d, Ethernet MAC address
|
|---|
| 964 | 88:99:AA:BB:CC:DD and IPv4 address 192.168.2.91, the following files in
|
|---|
| 965 | this order will be attempted (after config-file options):</p></div>
|
|---|
| 966 | <div class="literalblock">
|
|---|
| 967 | <div class="content">
|
|---|
| 968 | <pre><code>mybootdir/pxelinux.cfg/b8945908-d6a6-41a9-611d-74a6ab80b83d
|
|---|
| 969 | mybootdir/pxelinux.cfg/01-88-99-aa-bb-cc-dd
|
|---|
| 970 | mybootdir/pxelinux.cfg/C0A8025B
|
|---|
| 971 | mybootdir/pxelinux.cfg/C0A8025
|
|---|
| 972 | mybootdir/pxelinux.cfg/C0A802
|
|---|
| 973 | mybootdir/pxelinux.cfg/C0A80
|
|---|
| 974 | mybootdir/pxelinux.cfg/C0A8
|
|---|
| 975 | mybootdir/pxelinux.cfg/C0A
|
|---|
| 976 | mybootdir/pxelinux.cfg/C0
|
|---|
| 977 | mybootdir/pxelinux.cfg/C
|
|---|
| 978 | mybootdir/pxelinux.cfg/default</code></pre>
|
|---|
| 979 | </div></div>
|
|---|
| 980 | </div>
|
|---|
| 981 | <div class="sect2">
|
|---|
| 982 | <h3 id="_tftp_servers">TFTP servers</h3>
|
|---|
| 983 | <div class="paragraph"><p>For best results, use a TFTP server which supports the "tsize" TFTP
|
|---|
| 984 | option (RFC 1784/RFC 2349). The "tftp-hpa" TFTP server, which support
|
|---|
| 985 | options, is available at:</p></div>
|
|---|
| 986 | <div class="literalblock">
|
|---|
| 987 | <div class="content">
|
|---|
| 988 | <pre><code>http://www.kernel.org/pub/software/network/tftp/
|
|---|
| 989 | ftp://www.kernel.org/pub/software/network/tftp/</code></pre>
|
|---|
| 990 | </div></div>
|
|---|
| 991 | <div class="paragraph"><p>and on any kernel.org mirror (see <a href="http://www.kernel.org/mirrors/">http://www.kernel.org/mirrors/</a>).</p></div>
|
|---|
| 992 | <div class="paragraph"><p>Another TFTP server which supports this is atftp by Jean-Pierre
|
|---|
| 993 | Lefebvre:</p></div>
|
|---|
| 994 | <div class="literalblock">
|
|---|
| 995 | <div class="content">
|
|---|
| 996 | <pre><code>ftp://ftp.mamalinux.com/pub/atftp/</code></pre>
|
|---|
| 997 | </div></div>
|
|---|
| 998 | <div class="paragraph"><p>If your boot server is running Windows (and you can’t fix that), try
|
|---|
| 999 | tftpd32 by Philippe Jounin (you need version 2.11 or later; previous
|
|---|
| 1000 | versions had a bug which made it incompatible with PXELINUX):</p></div>
|
|---|
| 1001 | <div class="literalblock">
|
|---|
| 1002 | <div class="content">
|
|---|
| 1003 | <pre><code>http://tftpd32.jounin.net/</code></pre>
|
|---|
| 1004 | </div></div>
|
|---|
| 1005 | </div>
|
|---|
| 1006 | <div class="sect2">
|
|---|
| 1007 | <h3 id="_dhcp_config_simple">DHCP config: Simple</h3>
|
|---|
| 1008 | <div class="paragraph"><p>The PXE protocol uses a very complex set of extensions to DHCP or
|
|---|
| 1009 | BOOTP. However, most PXE implementations — this includes all Intel
|
|---|
| 1010 | ones version 0.99n and later — seem to be able to boot in a
|
|---|
| 1011 | "conventional" DHCP/TFTP configuration. Assuming you don’t have to
|
|---|
| 1012 | support any very old or otherwise severely broken clients, this is
|
|---|
| 1013 | probably the best configuration unless you already have a PXE boot
|
|---|
| 1014 | server on your network.</p></div>
|
|---|
| 1015 | <div class="paragraph"><p>A sample DHCP setup, using the "conventional TFTP" configuration,
|
|---|
| 1016 | would look something like the following, using ISC dhcp 2.0 dhcpd.conf
|
|---|
| 1017 | syntax:</p></div>
|
|---|
| 1018 | <div class="listingblock">
|
|---|
| 1019 | <div class="content">
|
|---|
| 1020 | <pre><code>allow booting;
|
|---|
| 1021 | allow bootp;
|
|---|
| 1022 |
|
|---|
| 1023 | # Standard configuration directives...
|
|---|
| 1024 |
|
|---|
| 1025 | option domain-name "<domain name>";
|
|---|
| 1026 | option subnet-mask <subnet mask>;
|
|---|
| 1027 | option broadcast-address <broadcast address>;
|
|---|
| 1028 | option domain-name-servers <dns servers>;
|
|---|
| 1029 | option routers <default router>;
|
|---|
| 1030 |
|
|---|
| 1031 | # Group the PXE bootable hosts together
|
|---|
| 1032 | group {
|
|---|
| 1033 | # PXE-specific configuration directives...
|
|---|
| 1034 | next-server <TFTP server address>;
|
|---|
| 1035 | filename "/tftpboot/pxelinux.0";
|
|---|
| 1036 |
|
|---|
| 1037 | # You need an entry like this for every host
|
|---|
| 1038 | # unless you're using dynamic addresses
|
|---|
| 1039 | host <hostname> {
|
|---|
| 1040 | hardware ethernet <ethernet address>;
|
|---|
| 1041 | fixed-address <hostname>;
|
|---|
| 1042 | }
|
|---|
| 1043 | }</code></pre>
|
|---|
| 1044 | </div></div>
|
|---|
| 1045 | <div class="paragraph"><p>Note that if your particular TFTP daemon runs under chroot (tftp-hpa
|
|---|
| 1046 | will do this if you specify the -s (secure) option; this is highly
|
|---|
| 1047 | recommended), you almost certainly should not include the /tftpboot
|
|---|
| 1048 | prefix in the filename statement.</p></div>
|
|---|
| 1049 | </div>
|
|---|
| 1050 | <div class="sect2">
|
|---|
| 1051 | <h3 id="_dhcp_config_pxe_1">DHCP Config: PXE-1</h3>
|
|---|
| 1052 | <div class="paragraph"><p>If the simple config does not work for your environment, you probably
|
|---|
| 1053 | should set up a "PXE boot server" on port 4011 of your TFTP server; a
|
|---|
| 1054 | free PXE boot server is available at:</p></div>
|
|---|
| 1055 | <div class="paragraph"><p><a href="http://www.kano.org.uk/projects/pxe/">http://www.kano.org.uk/projects/pxe/</a></p></div>
|
|---|
| 1056 | <div class="paragraph"><p>With such a boot server defined, your DHCP configuration should look
|
|---|
| 1057 | the same except for an "option dhcp-class-identifier" ("option
|
|---|
| 1058 | vendor-class-identifier" if you are using DHCP 3.0):</p></div>
|
|---|
| 1059 | <div class="listingblock">
|
|---|
| 1060 | <div class="content">
|
|---|
| 1061 | <pre><code>allow booting;
|
|---|
| 1062 | allow bootp;
|
|---|
| 1063 |
|
|---|
| 1064 | # Standard configuration directives...
|
|---|
| 1065 |
|
|---|
| 1066 | option domain-name "<domain name>";
|
|---|
| 1067 | option subnet-mask <subnet mask>;
|
|---|
| 1068 | option broadcast-address <broadcast address>;
|
|---|
| 1069 | option domain-name-servers <dns servers>;
|
|---|
| 1070 | option routers <default router>;
|
|---|
| 1071 |
|
|---|
| 1072 | # Group the PXE bootable hosts together
|
|---|
| 1073 | group {
|
|---|
| 1074 | # PXE-specific configuration directives...
|
|---|
| 1075 | option dhcp-class-identifier "PXEClient";
|
|---|
| 1076 | next-server <pxe boot server address>;
|
|---|
| 1077 |
|
|---|
| 1078 | # You need an entry like this for every host
|
|---|
| 1079 | # unless you're using dynamic addresses
|
|---|
| 1080 | host <hostname> {
|
|---|
| 1081 | hardware ethernet <ethernet address>;
|
|---|
| 1082 | fixed-address <hostname>;
|
|---|
| 1083 | }
|
|---|
| 1084 | }</code></pre>
|
|---|
| 1085 | </div></div>
|
|---|
| 1086 | <div class="paragraph"><p>Here, the boot file name is obtained from the PXE server.</p></div>
|
|---|
| 1087 | </div>
|
|---|
| 1088 | <div class="sect2">
|
|---|
| 1089 | <h3 id="_dhcp_config_encapsulated">DHCP Config: Encapsulated</h3>
|
|---|
| 1090 | <div class="paragraph"><p>If the "conventional TFTP" configuration doesn’t work on your clients,
|
|---|
| 1091 | and setting up a PXE boot server is not an option, you can attempt the
|
|---|
| 1092 | following configuration. It has been known to boot some
|
|---|
| 1093 | configurations correctly; however, there are no guarantees:</p></div>
|
|---|
| 1094 | <div class="listingblock">
|
|---|
| 1095 | <div class="content">
|
|---|
| 1096 | <pre><code>allow booting;
|
|---|
| 1097 | allow bootp;
|
|---|
| 1098 |
|
|---|
| 1099 | # Standard configuration directives...
|
|---|
| 1100 |
|
|---|
| 1101 | option domain-name "<domain name>";
|
|---|
| 1102 | option subnet-mask <subnet mask>;
|
|---|
| 1103 | option broadcast-address <broadcast address>;
|
|---|
| 1104 | option domain-name-servers <dns servers>;
|
|---|
| 1105 | option routers <default router>;
|
|---|
| 1106 |
|
|---|
| 1107 | # Group the PXE bootable hosts together
|
|---|
| 1108 | group {
|
|---|
| 1109 | # PXE-specific configuration directives...
|
|---|
| 1110 | option dhcp-class-identifier "PXEClient";
|
|---|
| 1111 | option vendor-encapsulated-options 09:0f:80:00:0c:4e:65:74:77:6f:72:6b:20:62:6f:6f:74:0a:07:00:50:72:6f:6d:70:74:06:01:02:08:03:80:00:00:47:04:80:00:00:00:ff;
|
|---|
| 1112 | next-server <TFTP server>;
|
|---|
| 1113 | filename "/tftpboot/pxelinux.0";
|
|---|
| 1114 |
|
|---|
| 1115 | # You need an entry like this for every host
|
|---|
| 1116 | # unless you're using dynamic addresses
|
|---|
| 1117 | host <hostname> {
|
|---|
| 1118 | hardware ethernet <ethernet address>;
|
|---|
| 1119 | fixed-address <hostname>;
|
|---|
| 1120 | }
|
|---|
| 1121 | }</code></pre>
|
|---|
| 1122 | </div></div>
|
|---|
| 1123 | <div class="paragraph"><p>Note that this <strong>will not</strong> boot some clients that <strong>will</strong> boot with the
|
|---|
| 1124 | "conventional TFTP" configuration; Intel Boot Client 3.0 and later are
|
|---|
| 1125 | known to fall into this category.</p></div>
|
|---|
| 1126 | </div>
|
|---|
| 1127 | <div class="sect2">
|
|---|
| 1128 | <h3 id="_dhcp_config_isc_dhcpd_options">DHCP Config: ISC dhcpd options</h3>
|
|---|
| 1129 | <div class="paragraph"><p>ISC dhcp 3.0 supports a rather nice syntax for specifying custom
|
|---|
| 1130 | options; you can use the following syntax in dhcpd.conf if you are
|
|---|
| 1131 | running this version of dhcpd:</p></div>
|
|---|
| 1132 | <div class="listingblock">
|
|---|
| 1133 | <div class="content">
|
|---|
| 1134 | <pre><code>option space pxelinux;
|
|---|
| 1135 | option pxelinux.magic code 208 = string;
|
|---|
| 1136 | option pxelinux.configfile code 209 = text;
|
|---|
| 1137 | option pxelinux.pathprefix code 210 = text;
|
|---|
| 1138 | option pxelinux.reboottime code 211 = unsigned integer 32;</code></pre>
|
|---|
| 1139 | </div></div>
|
|---|
| 1140 | <div class="literalblock">
|
|---|
| 1141 | <div class="content">
|
|---|
| 1142 | <pre><code>NOTE: In earlier versions of PXELINUX, this would only work as a
|
|---|
| 1143 | "site-option-space". Since PXELINUX 2.07, this will work both as a
|
|---|
| 1144 | "site-option-space" (unencapsulated) and as a "vendor-option-space"
|
|---|
| 1145 | (type 43 encapsulated.) This may avoid messing with the
|
|---|
| 1146 | dhcp-parameter-request-list, as detailed below.</code></pre>
|
|---|
| 1147 | </div></div>
|
|---|
| 1148 | <div class="paragraph"><p>Then, inside your PXELINUX-booting group or class (whereever you have
|
|---|
| 1149 | the PXELINUX-related options, such as the filename option), you can
|
|---|
| 1150 | add, for example:</p></div>
|
|---|
| 1151 | <div class="listingblock">
|
|---|
| 1152 | <div class="content">
|
|---|
| 1153 | <pre><code># Always include the following lines for all PXELINUX clients
|
|---|
| 1154 | site-option-space "pxelinux";
|
|---|
| 1155 | option pxelinux.magic f1:00:74:7e;
|
|---|
| 1156 | if exists dhcp-parameter-request-list {
|
|---|
| 1157 | # Always send the PXELINUX options (specified in hexadecimal)
|
|---|
| 1158 | option dhcp-parameter-request-list = concat(option dhcp-parameter-request-list,d0,d1,d2,d3);
|
|---|
| 1159 | }
|
|---|
| 1160 | # These lines should be customized to your setup
|
|---|
| 1161 | option pxelinux.configfile "configs/common";
|
|---|
| 1162 | option pxelinux.pathprefix "/tftpboot/pxelinux/files/";
|
|---|
| 1163 | option pxelinux.reboottime 30;
|
|---|
| 1164 | filename "/tftpboot/pxelinux/pxelinux.bin";</code></pre>
|
|---|
| 1165 | </div></div>
|
|---|
| 1166 | <div class="paragraph"><p>Note that the configfile is relative to the pathprefix: this will look
|
|---|
| 1167 | for a config file called /tftpboot/pxelinux/files/configs/common on
|
|---|
| 1168 | the TFTP server.</p></div>
|
|---|
| 1169 | <div class="paragraph"><p>The "option dhcp-parameter-request-list" statement forces the DHCP
|
|---|
| 1170 | server to send the PXELINUX-specific options, even though they are not
|
|---|
| 1171 | explicitly requested. Since the DHCP request is done before PXELINUX
|
|---|
| 1172 | is loaded, the PXE client won’t know to request them.</p></div>
|
|---|
| 1173 | <div class="paragraph"><p>Using ISC dhcp 3.0 you can create a lot of these strings on the fly.
|
|---|
| 1174 | For example, to use the hexadecimal form of the hardware address as
|
|---|
| 1175 | the configuration file name, you could do something like:</p></div>
|
|---|
| 1176 | <div class="listingblock">
|
|---|
| 1177 | <div class="content">
|
|---|
| 1178 | <pre><code>site-option-space "pxelinux";
|
|---|
| 1179 | option pxelinux.magic f1:00:74:7e;
|
|---|
| 1180 | if exists dhcp-parameter-request-list {
|
|---|
| 1181 | # Always send the PXELINUX options (specified in hexadecimal)
|
|---|
| 1182 | option dhcp-parameter-request-list = concat(option dhcp-parameter-request-list,d0,d1,d2,d3);
|
|---|
| 1183 | }
|
|---|
| 1184 | option pxelinux.configfile =
|
|---|
| 1185 | concat("pxelinux.cfg/", binary-to-ascii(16, 8, ":", hardware));
|
|---|
| 1186 | filename "/tftpboot/pxelinux.bin";</code></pre>
|
|---|
| 1187 | </div></div>
|
|---|
| 1188 | <div class="paragraph"><p>If you used this from a client whose Ethernet address was
|
|---|
| 1189 | 58:FA:84:CF:55:0E, this would look for a configuration file named
|
|---|
| 1190 | "/tftpboot/pxelinux.cfg/1:58:fa:84:cf:55:e".</p></div>
|
|---|
| 1191 | </div>
|
|---|
| 1192 | </div>
|
|---|
| 1193 | </div>
|
|---|
| 1194 | <div class="sect1">
|
|---|
| 1195 | <h2 id="_known_issues">KNOWN ISSUES</h2>
|
|---|
| 1196 | <div class="sectionbody">
|
|---|
| 1197 | <div class="paragraph"><p>The following problems are known with PXELINUX, so far:</p></div>
|
|---|
| 1198 | <div class="ulist"><ul>
|
|---|
| 1199 | <li>
|
|---|
| 1200 | <p>
|
|---|
| 1201 | The error recovery routine doesn’t work quite right. For right now,
|
|---|
| 1202 | it just does a hard reset - seems good enough.
|
|---|
| 1203 | </p>
|
|---|
| 1204 | </li>
|
|---|
| 1205 | <li>
|
|---|
| 1206 | <p>
|
|---|
| 1207 | We should probably call the UDP receive function in the keyboard
|
|---|
| 1208 | entry loop, so that we answer ARP requests.
|
|---|
| 1209 | </p>
|
|---|
| 1210 | </li>
|
|---|
| 1211 | <li>
|
|---|
| 1212 | <p>
|
|---|
| 1213 | Boot sectors/disk images are not supported yet.
|
|---|
| 1214 | </p>
|
|---|
| 1215 | </li>
|
|---|
| 1216 | </ul></div>
|
|---|
| 1217 | <div class="paragraph"><p>If you have additional problems, please contact the Syslinux mailing
|
|---|
| 1218 | list (see syslinux.txt for the address.)</p></div>
|
|---|
| 1219 | <div class="sect2">
|
|---|
| 1220 | <h3 id="_broken_pxe_stacks">Broken PXE stacks</h3>
|
|---|
| 1221 | <div class="paragraph"><p>Lots of PXE stacks, especially old ones, have various problems of
|
|---|
| 1222 | varying degrees of severity. Please see:</p></div>
|
|---|
| 1223 | <div class="literalblock">
|
|---|
| 1224 | <div class="content">
|
|---|
| 1225 | <pre><code>http://syslinux.zytor.com/hardware.php</code></pre>
|
|---|
| 1226 | </div></div>
|
|---|
| 1227 | <div class="olist lowerroman"><ol class="lowerroman">
|
|---|
| 1228 | <li>
|
|---|
| 1229 | <p>
|
|---|
| 1230 | for a list of currently known hardware problems, with workarounds
|
|---|
| 1231 | if known.
|
|---|
| 1232 | </p>
|
|---|
| 1233 | </li>
|
|---|
| 1234 | </ol></div>
|
|---|
| 1235 | <div class="paragraph"><p>There are a number of extremely broken PXE stacks in the field. The
|
|---|
| 1236 | gPXE project (formerly known as Etherboot) provides an open-source PXE
|
|---|
| 1237 | stack that works with a number of cards, and which can be loaded from
|
|---|
| 1238 | a CD-ROM, USB key, or floppy if desired.</p></div>
|
|---|
| 1239 | <div class="paragraph"><p>Information on gPXE is available from:</p></div>
|
|---|
| 1240 | <div class="literalblock">
|
|---|
| 1241 | <div class="content">
|
|---|
| 1242 | <pre><code>http://www.etherboot.org/</code></pre>
|
|---|
| 1243 | </div></div>
|
|---|
| 1244 | <div class="olist lowerroman"><ol class="lowerroman">
|
|---|
| 1245 | <li>
|
|---|
| 1246 | <p>
|
|---|
| 1247 | and ready-to-use ROM or disk images from:
|
|---|
| 1248 | </p>
|
|---|
| 1249 | <div class="literalblock">
|
|---|
| 1250 | <div class="content">
|
|---|
| 1251 | <pre><code>http://www.rom-o-matic.net/</code></pre>
|
|---|
| 1252 | </div></div>
|
|---|
| 1253 | </li>
|
|---|
| 1254 | </ol></div>
|
|---|
| 1255 | <div class="paragraph"><p>Some cards, like may systems with the SiS 900, has a PXE stack which
|
|---|
| 1256 | works just barely well enough to load a single file, but doesn’t
|
|---|
| 1257 | handle the more advanced items required by PXELINUX. If so, it is
|
|---|
| 1258 | possible to use the built-in PXE stack to load gPXE, which can then
|
|---|
| 1259 | load PXELINUX. See:</p></div>
|
|---|
| 1260 | <div class="literalblock">
|
|---|
| 1261 | <div class="content">
|
|---|
| 1262 | <pre><code>http://www.etherboot.org/wiki/pxechaining</code></pre>
|
|---|
| 1263 | </div></div>
|
|---|
| 1264 | </div>
|
|---|
| 1265 | </div>
|
|---|
| 1266 | </div>
|
|---|
| 1267 | <div class="sect1">
|
|---|
| 1268 | <h2 id="_notes">NOTES</h2>
|
|---|
| 1269 | <div class="sectionbody">
|
|---|
| 1270 | <div class="sect2">
|
|---|
| 1271 | <h3 id="_mtftp">MTFTP</h3>
|
|---|
| 1272 | <div class="paragraph"><p>PXELINUX does not support MTFTP, and there are no plans of doing so, as
|
|---|
| 1273 | MTFTP is inherently broken for files more than 65535 packets (about 92
|
|---|
| 1274 | MB) in size. It is of course possible to use MTFTP for the initial
|
|---|
| 1275 | boot, if you have such a setup. MTFTP server setup is beyond the scope
|
|---|
| 1276 | of this document.</p></div>
|
|---|
| 1277 | </div>
|
|---|
| 1278 | <div class="sect2">
|
|---|
| 1279 | <h3 id="_error_recovery">Error Recovery</h3>
|
|---|
| 1280 | <div class="paragraph"><p>If the boot fails, PXELINUX (unlike SYSLINUX) will not wait forever;
|
|---|
| 1281 | rather, if it has not received any input for approximately five
|
|---|
| 1282 | minutes after displaying an error message, it will reset the machine.
|
|---|
| 1283 | This allows an unattended machine to recover in case it had bad enough
|
|---|
| 1284 | luck of trying to boot at the same time the TFTP server goes down.</p></div>
|
|---|
| 1285 | </div>
|
|---|
| 1286 | </div>
|
|---|
| 1287 | </div>
|
|---|
| 1288 | <div class="sect1">
|
|---|
| 1289 | <h2 id="_see_also">SEE ALSO</h2>
|
|---|
| 1290 | <div class="sectionbody">
|
|---|
| 1291 | <div class="paragraph"><p><strong>syslinux.cfg</strong>(5), <strong>syslinux-cli</strong>(1), <strong>lilo</strong>(8), <strong>keytab-lilo.pl</strong>(8),
|
|---|
| 1292 | <strong>fdisk</strong>(8), <strong>mkfs</strong>(8), <strong>superformat</strong>(1).</p></div>
|
|---|
| 1293 | </div>
|
|---|
| 1294 | </div>
|
|---|
| 1295 | <div class="sect1">
|
|---|
| 1296 | <h2 id="_author">AUTHOR</h2>
|
|---|
| 1297 | <div class="sectionbody">
|
|---|
| 1298 | <div class="paragraph"><p>This AsciiDoc derived document is a modified version of the original
|
|---|
| 1299 | <strong>SYSLINUX</strong> documentation by H. Peter Anvin <<a href="mailto:hpa@zytor.com">hpa@zytor.com</a>>. The conversion
|
|---|
| 1300 | to an AsciiDoc was made by Gene Cumm <<a href="mailto:gene.cumm@gmail.com">gene.cumm@gmail.com</a>></p></div>
|
|---|
| 1301 | </div>
|
|---|
| 1302 | </div>
|
|---|
| 1303 | </div>
|
|---|
| 1304 | <div id="footnotes"><hr /></div>
|
|---|
| 1305 | <div id="footer">
|
|---|
| 1306 | <div id="footer-text">
|
|---|
| 1307 | Last updated 2014-01-17 16:09:56 PST
|
|---|
| 1308 | </div>
|
|---|
| 1309 | </div>
|
|---|
| 1310 | </body>
|
|---|
| 1311 | </html>
|
|---|
