View file File name : dependencies.html Content :<!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 a supervisor process automatically. The service daemon (or the corresponding <tt>run</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 for 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> </body> </html>