/usr/share/doc/runit/index.html is in runit 2.1.2-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 | <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<title>runit - a UNIX init scheme with service supervision</title>
</head>
<body>
<a href="http://smarden.org/pape/">G. Pape</a>
<hr>
<h1>runit - a UNIX init scheme with service supervision</h1>
<hr>
<a href="install.html">How to install runit</a><br>
<a href="upgrade.html">Upgrading from previous versions of runit</a>
<p>
<a href="benefits.html">Benefits</a><br>
<a href="replaceinit.html">How to replace init</a><br>
<a href="useinit.html">How to use runit with current init</a><br>
<a href="usedietlibc.html">How to use dietlibc</a><br>
<a href="faq.html">Frequently asked questions</a><br>
<p>
<a href="runlevels.html">Runlevels</a><br>
<a href="dependencies.html">Service dependencies</a><br>
<a href="runscripts.html">A collection of run scripts</a><br>
<p>
<a href="runit.8.html">The <tt>runit</tt> program</a><br>
<a href="runit-init.8.html">The <tt>runit-init</tt> program</a><br>
<br>
<a href="sv.8.html">The <tt>sv</tt> program</a><br>
<br>
<a href="runsvdir.8.html">The <tt>runsvdir</tt> program</a><br>
<a href="runsvchdir.8.html">The <tt>runsvchdir</tt> program</a><br>
<a href="runsv.8.html">The <tt>runsv</tt> program</a><br>
<br>
<a href="svlogd.8.html">The <tt>svlogd</tt> program</a><br>
<br>
<a href="chpst.8.html">The <tt>chpst</tt> program</a><br>
<a href="utmpset.8.html">The <tt>utmpset</tt> program</a><br>
<hr>
<i>runit</i> is a
cross-platform Unix init scheme with service supervision, a replacement for
<a href="ftp://ftp.cistron.nl/pub/people/miquels/sysvinit/">sysvinit</a>,
and other init schemes.
It runs on <b>GNU/Linux</b>, <b>*BSD</b>, <b>MacOSX</b>, <b>Solaris</b>,
and can easily be adapted to other Unix operating systems.
If <i>runit</i> runs for you on any other operating system, please
<a href="mailto:supervision@list.skarnet.org">let me know</a>.
<hr>
<i>runit</i> is discussed on the
<a href="http://skarnet.org/lists/#supervision">
<supervision@list.skarnet.org></a>
mailing list.
Please contact this list and not me privately.
<p>
To subscribe send an empty email to
<a href="mailto:supervision-subscribe@list.skarnet.org">
<supervision-subscribe@list.skarnet.org></a>.
<p>
Mailing list archives are available at
<a href="http://skarnet.org/lists/archive.cgi?2">skarnet.org</a>, and
<a href="http://news.gmane.org/gmane.comp.sysutils.supervision.general">
gmane.org</a>.
<hr>
The program <a href="runit.8.html">runit</a> is intended to run as Unix
process no 1, it is automatically started by the
<a href="runit-init.8.html">runit-init</a> <tt>/sbin/init</tt>-replacement
if this is started by the kernel.
<p>
<a href="runit.8.html">runit</a> performs the system's <i>booting</i>,
<i>running</i> and <i>shutting down</i> in <b>three stages</b>:
<ul>
<li><b>Stage 1:</b><br>
<i>runit</i> starts <tt>/etc/runit/1</tt> and waits for it to
terminate.
The system's one time initialization tasks are done here.
<tt>/etc/runit/1</tt> has full control over <tt>/dev/console</tt> to be
able to start an emergency shell in case the one time initialization
tasks fail.
<li><b>Stage 2:</b><br>
<i>runit</i> starts <tt>/etc/runit/2</tt> which should not return
until the system is going to halt or reboot; if it crashes, it will be
restarted.
Normally, <tt>/etc/runit/2</tt> runs
<a href="runsvdir.8.html">runsvdir</a>.
In Stage 2 <i>runit</i> optionally handles the INT signal (ctrl-alt-del
keyboard request on Linux/i386).
<li><b>Stage 3:</b><br>
If <i>runit</i> is told to halt or reboot the system, or Stage 2 returns
without errors, it terminates Stage 2 if it is running, and runs
<tt>/etc/runit/3</tt>.
The systems tasks to shutdown and halt or reboot are done here.
</ul>
These are working examples for Debian sarge:
<a href="debian/1">/etc/runit/1</a>,
<a href="debian/2">/etc/runit/2</a>,
<a href="debian/3">/etc/runit/3</a>.
<p>
The program <a href="runit-init.8.html">runit-init</a> is intended to
replace <tt>/sbin/init</tt>.
The command <b><tt>init 0</tt></b> tells <i>runit</i> to halt the system,
and <b><tt>init 6</tt></b> to reboot.
<a href="runlevels.html">Runlevels</a> are handled through the
<a href="runsvdir.8.html">runsvdir</a> and
<a href="runsvchdir.8.html">runsvchdir</a> programs.
Service <a href="dependencies.html">dependencies</a> are resolved
automatically.
<p>
<i>runit</i> is optimized for reliability and small size.
The amount of code in process no 1 should be minimal.
<hr>
See <a href="install.html">How to install runit</a> for installing
<i>runit</i>, and <a href="replaceinit.html">How to replace init</a> for
configuring <i>runit</i> to run as process no 1.
See <a href="useinit.html">How to use with current init</a> if you want to
use <i>runit</i> without replacing the current init scheme.
Please read the list of
<a href="faq.html">Frequently asked questions with answers</a>.
<hr>
If <i>runit</i> on Linux is compiled and linked with the
<a href="http://www.fefe.de/dietlibc/">dietlibc</a>, it yields in a
statically linked <tt>runit</tt> binary of 8.5k size and this
<tt>ps axuw</tt> output on my system:
<pre>
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 20 16 ? S 2002 0:02 runit
</pre>
I recommend doing this; for instructions, see
<a href="usedietlibc.html">How to use dietlibc</a>.
<hr>
The following distributions are known to include or package <i>runit</i>:
<ul>
<li><a href="http://packages.qa.debian.org/runit">
Debian GNU/Linux</a> (as alternative init scheme)
<li><a href="http://www.freshports.org/sysutils/runit/">
FreeBSD</a>
<li><a href="http://www.openbsd.org/cgi-bin/cvsweb/ports/sysutils/runit/">
OpenBSD</a>
<li><a href="http://pkgsrc.se/wip/runit/">
NetBSD</a>
<li><a href="http://packages.ubuntu.com/runit">
Ubuntu</a> (as alternative init scheme)
<li><a href="http://packages.gentoo.org/package/sys-process/runit">
Gentoo</a>
<li><a href="https://code.google.com/p/runit-for-lfs/">
Linux from Scratch</a>
<li><a href="http://www.finnix.org/">
Finnix</a>
<li><a href="http://www.smeserver.org/">
SME server</a>
<li><a href="http://linux-vserver.org/Running_runit-supervised_services_inside_a_vserver">
Linux-VServer</a>
<li><a href="http://www.t2-project.org/">
T2</a>
<li><a href="http://www.gobolinux.org/">
GoboLinux</a>
<li><a href="http://www.dragora.org/">
Dragora GNU/Linux</a> (as default init scheme)
<li><a href="https://wiki.archlinux.org/index.php/Runit">
ArchLinux</a>
<li><a href="http://www.opensde.org/">
OpenSDE</a>
<li><a href="http://zinux.cynicbytrade.com/">
Zinux Linux</a> (as default init scheme)
<li><a href="http://deepofix.org/">
deepOfix Mail Server</a> (as default init scheme)
</ul>
If you know of more distributions, please
<a href="mailto:supervision@list.skarnet.org">let me know</a>.
<hr>
<b><i>runit</i> in use</b>:
I replaced <i>sysvinit</i> successfully with <i>runit</i> on several server
systems and a laptop running Debian/GNU Linux sarge, woody, and potato.
Here is an example:
<pre>
# strings /proc/1/exe |grep Id
$Id: runit.c,v 1.7 2002/02/13 09:59:52 pape Exp $
# uptime
11:59:13 up 365 days, 23:22, 3 users, load average: 0.01, 0.02, 0.00
# ps axuw |head -n20
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 20 16 ? S 2002 0:07 runit
root 2 0.0 0.0 0 0 ? SW 2002 0:00 [keventd]
root 3 0.0 0.0 0 0 ? SWN 2002 0:51 [ksoftirqd_CPU0]
root 4 0.0 0.0 0 0 ? SW 2002 144:38 [kswapd]
root 5 0.0 0.0 0 0 ? SW 2002 0:08 [bdflush]
root 6 0.0 0.0 0 0 ? SW 2002 7:24 [kupdated]
root 168 0.0 0.0 1652 168 ? S 2002 0:27 /usr/sbin/cron
root 174 0.0 0.0 36 24 ? S 2002 1:06 runsvdir /var/service log: ...............................................................................................
root 176 0.0 0.0 20 20 ? S 2002 0:00 runsv qmail-send
root 177 0.0 0.0 20 20 ? S 2002 0:00 runsv getty-5
root 178 0.0 0.0 20 20 ? S 2002 0:00 runsv getty-4
root 179 0.0 0.0 20 20 ? S 2002 0:00 runsv getty-3
root 180 0.0 0.0 20 20 ? S 2002 0:00 runsv getty-2
root 182 0.0 0.0 20 20 ? S 2002 0:00 runsv socklog-unix
root 183 0.0 0.0 1256 4 tty5 S 2002 0:00 /sbin/getty 38400 tty5 linux
root 184 0.0 0.0 1256 4 tty3 S 2002 0:00 getty 38400 tty3 linux
root 185 0.0 0.0 20 20 ? S 2002 0:00 runsv socklog-klog
root 186 0.0 0.0 20 20 ? S 2002 0:00 runsv ssh
root 187 0.0 0.0 1256 4 tty4 S 2002 0:00 getty 38400 tty4 linux
# pstree
runit-+-bdflush
|-cron
|-gcache
|-keventd
|-ksoftirqd_CPU0
|-kswapd
|-kupdated
`-runsvdir-+-runsv-+-multilog
| `-qmail-send-+-qmail-clean
| |-qmail-lspawn
| `-qmail-rspawn---qmail-remote
|-4*[runsv---getty]
|-2*[runsv-+-multilog]
| `-socklog]
|-runsv-+-multilog
| `-sshd-+-sshd---sshd---bash---bash---pstree
| `-sshd---sshd---rsync
|-runsv---clockspeed
|-runsv-+-dnscache
| `-multilog
|-runsv---apache-ssl-+-9*[apache-ssl]
| |-gcache
| `-4*[multilog]
|-7*[runsv-+-multilog]
| `-tcpserver]
|-4*[runsv-+-multilog]
| `-tinydns]
|-runsv---uncat
|-2*[runsv-+-multilog]
| `-tcpsvd]
|-runsv-+-svlogd
| `-tcpsvd-+-smtpfront-qmail
| `-smtpfront-qmail---qmail-queue
`-runsv-+-svlogd
`-tcpsvd---bincimap-up---bincimapd
</pre>
<hr>
See <a href="http://smarden.org/runit/">http://smarden.org/runit/</a>
for recent informations.
<hr>
Related links:
<ul>
<li><a href="http://www.fefe.de/minit/">
minit</a> - a small yet feature-complete init
<li><a href="http://multivac.cwru.edu/svscan-1/">
svscan as process 1</a> - by Paul Jarc
<li><a href="ftp://ftp.cistron.nl/pub/people/miquels/sysvinit/">
sysvinit</a> - source code
<li><a href="http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/init/">
FreeBSD's init</a> - CVS repository
<li><a href="http://cvsweb.netbsd.org/bsdweb.cgi/src/sbin/init/">
NetBSD's init</a> - CVS repository
<li><a href="http://www.openbsd.org/cgi-bin/cvsweb/src/sbin/init/">
OpenBSD's init</a> - CVS repository
<li><a href="http://www.atnf.csiro.au/~rgooch/linux/boot-scripts/">
Linux Boot Scripts</a> - by Richard Gooch
</ul>
<hr>
<address><a href="mailto:pape@smarden.org">
Gerrit Pape <pape@smarden.org>
</a></address>
</body>
</html>
|