<!DOCTYPE html><html><head><title></title><style type="text/css">p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div>Hello,<br></div><div><br></div><div>I run bird on a system which uses systemd as a service supervisor, and would like to implement graceful restart in a way which works well with it.<br></div><div><br></div><div>In particular, what I'd like to do is:<br></div><ul><li>If I restart the bird service (e.g. for an upgrade), Bird performs a graceful restart<br></li><li>If I manually stop bird (systemctl stop bird2), shutdown the system, or any other action which is liable to cause a longer period of downtime, perform a graceful restart (for BGP at least)<br></li></ul><div>Ideally systemd would have an <span class="font" style="font-family:menlo, consolas, monospace, sans-serif;">ExecStopRestart</span> option which could be used to distinguish between stops and restarts, but unfortunately it doesn't (I might submit a feature request for this regardless). However, it does support <span class="term"><code class="varname"><span class="font" style="font-family:menlo, consolas, monospace, sans-serif;">KillSignal</span> and <span class="font" style="font-family:menlo, consolas, monospace, sans-serif;">RestartKillSignal</span> options.</code></span><br></div><div><br></div><div><span class="term"><code class="varname">So therefore I was wondering how the Bird developers and users would feel about introducing a signal (SIGUSR2 maybe?) which can be used to request that Bird perform a graceful restart?</code></span><br></div><div><br></div><div><span class="term"><code class="varname">- Erin</code></span><br></div></body></html>