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3 3
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7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-config.xml,v 1.93 2007/05/20 20:32:23 nightmorph Exp $ --> 7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-config.xml,v 1.108 2011/10/30 11:56:08 swift Exp $ -->
8 8
9<sections> 9<sections>
10 10
11<abstract> 11<abstract>
12You need to edit some important configuration files. In this chapter 12You need to edit some important configuration files. In this chapter
13you receive an overview of these files and an explanation on how to 13you receive an overview of these files and an explanation on how to
14proceed. 14proceed.
15</abstract> 15</abstract>
16 16
17<version>8.1</version> 17<version>15</version>
18<date>2007-05-15</date> 18<date>2011-10-30</date>
19 19
20<section> 20<section>
21<title>Filesystem Information</title> 21<title>Filesystem Information</title>
22<subsection> 22<subsection>
23<title>What is fstab?</title> 23<title>What is fstab?</title>
89Let us take a look at how we write down the options for the <path>/boot</path> 89Let us take a look at how we write down the options for the <path>/boot</path>
90partition. This is just an example, if you didn't or couldn't create a 90partition. This is just an example, if you didn't or couldn't create a
91<path>/boot</path>, don't copy it. 91<path>/boot</path>, don't copy it.
92</p> 92</p>
93 93
94<p test="contains(func:keyval('/boot'), '/dev/hd')">
95In our default <keyval id="arch"/> partitioning example, <path>/boot</path> is
96usually the <path><keyval id="/boot"/></path> partition (or
97<path>/dev/sda*</path> if you use SCSI or SATA drives), with <c>ext2</c> as
98filesystem. It needs to be checked during boot, so we would write down:
99</p> 94<p>
100
101<p test="contains(func:keyval('/boot'), '/dev/sd')">
102In our default <keyval id="arch"/> partitioning example, <path>/boot</path> is 95In our default <keyval id="arch"/> partitioning example, <path>/boot</path> is
103usually the <path><keyval id="/boot"/></path> partition, with <c>ext2</c> as 96usually the <path><keyval id="/boot"/></path> partition, with <c>ext2</c> as
104filesystem. It needs to be checked during boot, so we would write down: 97filesystem. It needs to be checked during boot, so we would write down:
105</p> 98</p>
106 99
116</p> 109</p>
117 110
118</body> 111</body>
119<body> 112<body>
120 113
121<p test="not(func:keyval('arch')='SPARC')"> 114<p>
122Add the rules that match your partitioning scheme and append rules for 115Add the rules that match your partitioning scheme and append rules for
123<path>/proc</path>, <c>tmpfs</c>, for your CD-ROM drive(s), and of course, if
124you have other partitions or drives, for those too.
125</p>
126
127<p test="func:keyval('arch')='SPARC'">
128Add the rules that match your partitioning schema and append rules for
129<path>/proc/openprom</path>, <path>/proc</path>, <c>tmpfs</c> , for your CD-ROM
130drive(s), and of course, if you have other partitions or drives, for those too. 116your CD-ROM drive(s), and of course, if you have other partitions or drives,
117for those too.
131</p> 118</p>
132 119
133<p> 120<p>
134Now use the <e>example</e> below to create your <path>/etc/fstab</path>: 121Now use the <e>example</e> below to create your <path>/etc/fstab</path>:
135</p> 122</p>
136
137<pre caption="A full /etc/fstab example" test="func:keyval('arch')='AMD64' or func:keyval('arch')='x86'">
138<keyval id="/boot"/> /boot ext2 defaults,noatime 1 2
139/dev/hda2 none swap sw 0 0
140/dev/hda3 / ext3 noatime 0 1
141
142proc /proc proc nodev,nosuid,noexec 0 0
143shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
144
145/dev/cdrom /mnt/cdrom auto noauto,user 0 0
146</pre>
147 123
148<pre caption="A full /etc/fstab example" test="func:keyval('arch')='HPPA'"> 124<pre caption="A full /etc/fstab example" test="func:keyval('arch')='HPPA'">
149<keyval id="/boot"/> /boot ext2 defaults,noatime 1 2 125<keyval id="/boot"/> /boot ext2 defaults,noatime 1 2
150/dev/sda3 none swap sw 0 0 126/dev/sda3 none swap sw 0 0
151/dev/sda4 / ext3 noatime 0 1 127/dev/sda4 / ext3 noatime 0 1
152 128
153proc /proc proc nodev,nosuid,noexec 0 0 129/dev/cdrom /mnt/cdrom auto noauto,user 0 0
130
131proc /proc proc defaults 0 0
154shm /dev/shm tmpfs nodev,nosuid,noexec 0 0 132shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
155
156/dev/cdrom /mnt/cdrom auto noauto,user 0 0
157</pre> 133</pre>
158 134
159<pre caption="A full /etc/fstab example" test="func:keyval('arch')='Alpha' or func:keyval('arch')='MIPS'"> 135<pre caption="A full /etc/fstab example" test="func:keyval('arch')='Alpha' or func:keyval('arch')='MIPS' or func:keyval('arch')='x86' or func:keyval('arch')='AMD64'">
160<keyval id="/boot"/> /boot ext2 defaults,noatime 1 2 136<keyval id="/boot"/> /boot ext2 defaults,noatime 1 2
161/dev/sda2 none swap sw 0 0 137/dev/sda2 none swap sw 0 0
162/dev/sda3 / ext3 noatime 0 1 138/dev/sda3 / ext3 noatime 0 1
163 139
164proc /proc proc nodev,nosuid,noexec 0 0 140/dev/cdrom /mnt/cdrom auto noauto,user 0 0
141
142proc /proc proc defaults 0 0
165shm /dev/shm tmpfs nodev,nosuid,noexec 0 0 143shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
166
167/dev/cdrom /mnt/cdrom auto noauto,user 0 0
168</pre> 144</pre>
169 145
170<pre caption="A full /etc/fstab example" test="func:keyval('arch')='SPARC'"> 146<pre caption="A full /etc/fstab example" test="func:keyval('arch')='SPARC'">
171/dev/sda1 / ext3 noatime 0 1 147/dev/sda1 / ext3 noatime 0 1
172/dev/sda2 none swap sw 0 0 148/dev/sda2 none swap sw 0 0
173/dev/sda4 /usr ext3 noatime 0 2 149/dev/sda4 /usr ext3 noatime 0 2
174/dev/sda5 /var ext3 noatime 0 2 150/dev/sda5 /var ext3 noatime 0 2
175/dev/sda6 /home ext3 noatime 0 2 151/dev/sda6 /home ext3 noatime 0 2
176 152
153<comment># You must add the rules for openprom</comment>
177openprom /proc/openprom openpromfs defaults 0 0 154openprom /proc/openprom openpromfs defaults 0 0
178proc /proc proc nodev,nosuid,noexec 0 0
179shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
180 155
181/dev/cdrom /mnt/cdrom auto noauto,user 0 0 156/dev/cdrom /mnt/cdrom auto noauto,user 0 0
182</pre>
183 157
184<note test="func:keyval('arch')='PPC'"> 158proc /proc proc defaults 0 0
185There are important variations between PPC machine types. Please make sure you
186adapt the following example to your system.
187</note>
188
189<pre caption="A full /etc/fstab example" test="func:keyval('arch')='PPC'">
190/dev/hda4 / ext3 noatime 0 1
191/dev/hda3 none swap sw 0 0
192
193proc /proc proc nodev,nosuid,noexec 0 0
194shm /dev/shm tmpfs nodev,nosuid,noexec 0 0 159shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
195
196/dev/cdrom /mnt/cdrom auto noauto,user 0 0
197</pre> 160</pre>
198 161
199<pre caption="A full /etc/fstab example" test="func:keyval('arch')='PPC64'"> 162<pre caption="A full /etc/fstab example" test="func:keyval('arch')='PPC' or
163func:keyval('arch')='PPC64'">
200/dev/sda4 / ext3 noatime 0 1 164/dev/sda4 / ext3 noatime 0 1
201/dev/sda3 none swap sw 0 0 165/dev/sda3 none swap sw 0 0
202 166
203proc /proc proc nodev,nosuid,noexec 0 0 167/dev/cdrom /mnt/cdrom auto noauto,user 0 0
168
169proc /proc proc defaults 0 0
204shm /dev/shm tmpfs nodev,nosuid,noexec 0 0 170shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
205
206/dev/cdrom /mnt/cdrom auto noauto,user 0 0
207</pre> 171</pre>
208 172
209<p> 173<p>
210<c>auto</c> makes <c>mount</c> guess for the filesystem (recommended for 174<c>auto</c> makes <c>mount</c> guess for the filesystem (recommended for
211removable media as they can be created with one of many filesystems) and 175removable media as they can be created with one of many filesystems) and
240</p> 204</p>
241 205
242<pre caption="Setting the host name"> 206<pre caption="Setting the host name">
243# <i>nano -w /etc/conf.d/hostname</i> 207# <i>nano -w /etc/conf.d/hostname</i>
244 208
245<comment>(Set the HOSTNAME variable to your host name)</comment> 209<comment>(Set the hostname variable to your host name)</comment>
246HOSTNAME="<i>tux</i>" 210hostname="<i>tux</i>"
247</pre> 211</pre>
248 212
249<p> 213<p>
250Second, <e>if</e> you need a domainname, set it in <path>/etc/conf.d/net</path>. 214Second, <e>if</e> you need a domainname, set it in <path>/etc/conf.d/net</path>.
251You only need a domain if your ISP or network administrator says so, or if you 215You only need a domain if your ISP or network administrator says so, or if you
278nis_domain_lo="<i>my-nisdomain</i>" 242nis_domain_lo="<i>my-nisdomain</i>"
279</pre> 243</pre>
280 244
281<note> 245<note>
282For more information on configuring DNS and NIS, please read the examples 246For more information on configuring DNS and NIS, please read the examples
283provided in <path>/etc/conf.d/net.example</path>. Also, you may want to emerge 247provided in <path>/usr/share/doc/openrc-*/net.example.bz2</path> which
284<c>resolvconf-gentoo</c> to help manage your DNS/NIS setup. 248can be read using <c>bzless</c>. Also, you may want to emerge <c>openresolv</c>
249to help manage your DNS/NIS setup.
285</note> 250</note>
286 251
287</body> 252</body>
288</subsection> 253</subsection>
289<subsection> 254<subsection>
306<p> 271<p>
307All networking information is gathered in <path>/etc/conf.d/net</path>. It uses 272All networking information is gathered in <path>/etc/conf.d/net</path>. It uses
308a straightforward yet not intuitive syntax if you don't know how to set up 273a straightforward yet not intuitive syntax if you don't know how to set up
309networking manually. But don't fear, we'll explain everything. A fully 274networking manually. But don't fear, we'll explain everything. A fully
310commented example that covers many different configurations is available in 275commented example that covers many different configurations is available in
311<path>/etc/conf.d/net.example</path>. 276<path>/usr/share/doc/openrc-*/net.example.bz2</path>.
312</p> 277</p>
313 278
314<p> 279<p>
315DHCP is used by default. For DHCP to work, you will need to install a DHCP 280DHCP is used by default. For DHCP to work, you will need to install a DHCP
316client. This is described later in <uri 281client. This is described later in <uri
334</p> 299</p>
335 300
336<pre caption="Default /etc/conf.d/net"> 301<pre caption="Default /etc/conf.d/net">
337# This blank configuration will automatically use DHCP for any net.* 302# This blank configuration will automatically use DHCP for any net.*
338# scripts in /etc/init.d. To create a more complete configuration, 303# scripts in /etc/init.d. To create a more complete configuration,
339# please review /etc/conf.d/net.example and save your configuration 304# please review /usr/share/doc/openrc-*/net.example.bz2 and save
340# in /etc/conf.d/net (this file :]!). 305# your configuration in /etc/conf.d/net (this file :]!).
341</pre> 306</pre>
342 307
343<p> 308<p>
344To enter your own IP address, netmask and gateway, you need 309To enter your own IP address, netmask and gateway, you need
345to set both <c>config_eth0</c> and <c>routes_eth0</c>: 310to set both <c>config_eth0</c> and <c>routes_eth0</c>:
346</p> 311</p>
347 312
348<pre caption="Manually setting IP information for eth0"> 313<pre caption="Manually setting IP information for eth0">
349config_eth0=( "192.168.0.2 netmask 255.255.255.0 brd 192.168.0.255" ) 314config_eth0="192.168.0.2 netmask 255.255.255.0 brd 192.168.0.255"
350routes_eth0=( "default via 192.168.0.1" ) 315routes_eth0="default via 192.168.0.1"
351</pre> 316</pre>
352 317
353<p> 318<p>
354To use DHCP and add specific DHCP options, define <c>config_eth0</c> and 319To use DHCP, define <c>config_eth0</c>:
355<c>dhcp_eth0</c>:
356</p> 320</p>
357 321
358<pre caption="Automatically obtaining an IP address for eth0"> 322<pre caption="Automatically obtaining an IP address for eth0">
359config_eth0=( "dhcp" ) 323config_eth0="dhcp"
360dhcp_eth0="nodns nontp nonis"
361</pre> 324</pre>
362 325
363<p> 326<p>
364Please read <path>/etc/conf.d/net.example</path> for a list of all available 327Please read <path>/usr/share/doc/openrc-*/net.example.bz2</path> for a
365options. 328list of all available options. Be sure to also read your DHCP client manpage if
329you need to set specific DHCP options.
366</p> 330</p>
367 331
368<p> 332<p>
369If you have several network interfaces repeat the above steps for 333If you have several network interfaces repeat the above steps for
370<c>config_eth1</c>, <c>config_eth2</c>, etc. 334<c>config_eth1</c>, <c>config_eth2</c>, etc.
384To have your network interfaces activated at boot, you need to add them to the 348To have your network interfaces activated at boot, you need to add them to the
385default runlevel. 349default runlevel.
386</p> 350</p>
387 351
388<pre caption="Adding net.eth0 to the default runlevel"> 352<pre caption="Adding net.eth0 to the default runlevel">
353# <i>cd /etc/init.d</i>
354# <i>ln -s net.lo net.eth0</i>
389# <i>rc-update add net.eth0 default</i> 355# <i>rc-update add net.eth0 default</i>
390</pre> 356</pre>
391 357
392<p> 358<p>
393If you have several network interfaces, you need to create the appropriate 359If you have several network interfaces, you need to create the appropriate
394<path>net.eth1</path>, <path>net.eth2</path> etc. initscripts for those. You can 360<path>net.eth1</path>, <path>net.eth2</path> etc. just like you did with
395use <c>ln</c> to do this: 361<path>net.eth0</path>.
396</p>
397
398<pre caption="Creating extra initscripts">
399# <i>cd /etc/init.d</i>
400# <i>ln -s net.lo net.eth1</i>
401# <i>rc-update add net.eth1 default</i>
402</pre> 362</p>
403 363
404</body> 364</body>
405</subsection> 365</subsection>
406<subsection> 366<subsection>
407<title>Writing Down Network Information</title> 367<title>Writing Down Network Information</title>
469 429
470<pre caption="Setting the root password"> 430<pre caption="Setting the root password">
471# <i>passwd</i> 431# <i>passwd</i>
472</pre> 432</pre>
473 433
474<p>
475If you want root to be able to log on through the serial console, add
476<c>tts/0</c> to <path>/etc/securetty</path>:
477</p>
478
479<pre caption="Adding tts/0 to /etc/securetty">
480# <i>echo "tts/0" &gt;&gt; /etc/securetty</i>
481</pre>
482
483</body> 434</body>
484</subsection> 435</subsection>
485<subsection> 436<subsection>
486<title>System Information</title> 437<title>System Information</title>
487<body> 438<body>
513<pre caption="Opening /etc/conf.d/keymaps"> 464<pre caption="Opening /etc/conf.d/keymaps">
514# <i>nano -w /etc/conf.d/keymaps</i> 465# <i>nano -w /etc/conf.d/keymaps</i>
515</pre> 466</pre>
516 467
517<p> 468<p>
518Take special care with the <c>KEYMAP</c> variable. If you select the wrong 469Take special care with the <c>keymap</c> variable. If you select the wrong
519<c>KEYMAP</c>, you will get weird results when typing on your keyboard. 470<c>keymap</c>, you will get weird results when typing on your keyboard.
520</p> 471</p>
521 472
522<note test="substring(func:keyval('arch'),1,3)='PPC'"> 473<note test="substring(func:keyval('arch'),1,3)='PPC'">
523PPC uses x86 keymaps on most systems. Users who want to be able to use ADB 474PPC uses x86 keymaps on most systems.
524keymaps on boot have to enable ADB keycode sendings in their kernel and have to
525set a mac/ppc keymap in <path>/etc/conf.d/keymaps</path>.
526</note> 475</note>
527 476
528<p> 477<p>
529When you're finished configuring <path>/etc/conf.d/keymaps</path>, save and 478When you're finished configuring <path>/etc/conf.d/keymaps</path>, save and
530exit. 479exit.
531</p> 480</p>
532 481
533<p> 482<p>
534Gentoo uses <path>/etc/conf.d/clock</path> to set clock options. Edit it 483Gentoo uses <path>/etc/conf.d/hwclock</path> to set clock options. Edit it
535according to your needs. 484according to your needs.
536</p> 485</p>
537 486
538<pre caption="Opening /etc/conf.d/clock"> 487<pre caption="Opening /etc/conf.d/hwclock">
539# <i>nano -w /etc/conf.d/clock</i> 488# <i>nano -w /etc/conf.d/hwclock</i>
540</pre> 489</pre>
541 490
542<p> 491<p>
543If your hardware clock is not using UTC, you need to add <c>CLOCK="local"</c> 492If your hardware clock is not using UTC, you need to add <c>clock="local"</c>
544to the file. Otherwise you will notice some clock skew. 493to the file. Otherwise you will notice some clock skew.
545</p> 494</p>
546 495
547<p> 496<p>
497When you're finished configuring <path>/etc/conf.d/hwclock</path>, save and
498exit.
499</p>
500
501<p>
548You should define the timezone that you previously copied to 502You should define the timezone that you previously copied to
549<path>/etc/localtime</path> so that further upgrades of the 503<path>/etc/localtime</path> in the <path>/etc/timezone</path> file so that
550<c>sys-libs/timezone-data</c> package can update <path>/etc/localtime</path> 504further upgrades of the <c>sys-libs/timezone-data</c> package can update
551automatically. For instance, if you used the GMT timezone, you would add 505<path>/etc/localtime</path> automatically. For instance, if you used the GMT
552<c>TIMEZONE="GMT"</c> 506timezone, you would write <c>GMT</c> in the <path>/etc/timezone</path> file.
553</p>
554
555<p>
556When you're finished configuring <path>/etc/conf.d/clock</path>, save and
557exit.
558</p> 507</p>
559 508
560<p test="not(func:keyval('arch')='PPC64')"> 509<p test="not(func:keyval('arch')='PPC64')">
561Please continue with <uri link="?part=1&amp;chap=9">Installing Necessary System 510Please continue with <uri link="?part=1&amp;chap=9">Installing Necessary System
562Tools</uri>. 511Tools</uri>.

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