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authorGerrit Pape <pape@smarden.org>2003-05-03 15:57:55 +0000
committerGerrit Pape <pape@smarden.org>2003-05-03 15:57:55 +0000
commita90c48599dd09dc2fd8985b818405494e1f30982 (patch)
treeb035a2196ed33d756acd6ca479c5fb8bdec29206 /doc/dependencies.html
parentc680551a4d77e7a1c036acb9af909565ca04b82f (diff)
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* doc/dependencies.html, doc/useinit.html: new.
  * doc/index.html: adapt; reorder programs; runsvstat, runsvctrl installed
    by default.
  * doc/install.html: remove dependency on daemontools; create /package.
  * doc/replaceinit.html, man/runsv.8: typo.
  * man/svwaitdown.8, man/svwaitup.8: refer to runit and supervise.
  * svlogd.c: fix counter var namespace.
  * package/commands: add runsvctrl, runsvstat.
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+<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
+<html>
+<head>
+<title>runit -service dependencies</title>
+</head>
+<body>
+<a href="http://smarden.org/pape/">G. Pape</a><br>
+<a href="index.html">runit</a><br>
+<hr>
+<h1>runit - service dependencies</h1>
+<hr>
+<i>runit</i>'s service supervision resolves dependencies for service daemons
+designed to be run by an supervisor process automatically.
+The service daemon (or the corresponding <tt>run</tt> and <tt>finish</tt>
+scripts) should behave as follows:
+<ul>
+  <li>before providing the service, check if all services it depends on are
+  available.
+  If not, exit with an error, the supervisor will then try again.
+  <li>write all logs through <i>runit</i>'s logging facility.
+  The <a href="runsv.8.html">runsv</a> program takes care that all logs of
+  the service are written safely to disk.
+  Therefore there's no need to depend on a system logging service.
+  <li>optionally when the service is told to become down, take down other
+  services that depend on this one after disabling the service.
+</ul>
+If you want to run service daemons that do not support service supervision
+as described above, please refer to
+<a href="http://smarden.org/pape/djb/daemontools/noinit.html">this page</a>
+about service dependencies I wrote some time ago.
+<hr>
+<address><a href="mailto:pape@smarden.org">
+Gerrit Pape &lt;pape@smarden.org&gt;
+</a></address>
+<small>$Id$</small>
+</body>
+</html>