On 1/7/2010 11:39 AM, Scott Ferguson wrote:
> The second instance should attach to the first watchdog (assuming you're
> working from the same configuration file.) The "start" flow looks like:
>
> 1. try to contact and existing watchdog at the watchdog port
> a. if that succeeds, send a BAM/HMTP command to start the new Resin
> instance
> 2. otherwise start a new watchdog instance
Right, I think what's happening, though, is something like this:
1. linux starts instance a (/etc/rc3.d/S86resin-a start)
1a. that script returns control.
- At this point the script has completed, but resin isn't done
starting, but watchdog isn't up, running, and ready to respond to the
command.
2. linux starts instance b (/etc/rc3.d/S95resin-b start)
2a. this tries to connect to watchdog and can't so it initiates that
3. by now the a instance has completed starting its watchdog, so the
instance b attempt collides
> The watchdog does use the configuration file for authentication. If you
> have different AdminAuthenticator users, the "start/stop" will fail
> authentication. So if you need isolated instances, you'll need to start
> separate watchdogs.
All the config is shared.
> The<watchdog-port> in the<server> block can be used to create separate
> watchdog instances.
I could do this, just to avoid the problem, although it seems
undesirable. I guess another option could be for the server to retry the
connect if it finds a port conflict. Would that be a desirable mod? If
so, I could enter it in Mantis.
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