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diff --git a/doc/dependencies.html b/doc/dependencies.html new file mode 100644 index 0000000..f078146 --- /dev/null +++ b/doc/dependencies.html @@ -0,0 +1,37 @@ +<!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 <pape@smarden.org> +</a></address> +<small>$Id$</small> +</body> +</html> |