Hi Ellie,--On 5. April 2016 um 14:33:46 +1000 ellie timoney <el...@fastmail.com> wrote:
> Sebastian, is there anything you tried that *didn't* work, and if so, > what happened? The only thing I tried that didn't work was to add a IPv6 listener and to HUP the master process. The manpage for master reads (in my version): Cyrus-master rereads its configuration file when it receives a hangup signal, SIGHUP. Services and events may be added, deleted or modified when the configuration file is reread. Any active services removed from the configuration file will be allowed to run until completion. From that it isn't obvious that some class of changes to cyrus.conf apparently require a restart of the service.I've been looking through master/master.c to see what it actually does, and it looks like it matches this documentation. It does have some commentary in reread_conf() about recycling services that have not been removed nor were newly added, which almost sounds as if it might have this sort of effect... except that, digging into add_service(), it will only reuse entries if their name, listen and proto all match (which if you've changed one to IPv6, it won't), and otherwise it will be added as a new service (and so reread_conf() will treat it as a newly added service, not an existing one to recycle). I'm pretty tired, and so probably not reading it as closely as I could otherwise -- maybe there's a bug or subtlety I've missed -- but: it at least /looks like it intends to/ do what the documentation says. So it's interesting that it didn't.
after thinking about it, I think it's like this: I added a service that was configured to listen on a privileged port. But master has dropped privileges by that point, so it can't add such a listener. I just double-checked that I *can* add a listener at run-time if it's set up to listen to a non-privileged port. Obvious in hindsight, but perhaps worth a note anyway.
Cheers
Sebastian
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