[LRUG] Sites drop off web

[Olly Headey]

>
> On Friday, 22 July 2011 at 11:25, Andrew Stewart wrote:

I have several Rails/Sinatra sites on a couple of RHEL VPSs. Almost every
> day for several months at least, almost all the sites drop off the web for
> 2-4 minutes. I know this because Pingdom notifies me at 4.30am.


> As you can imagine, it's annoying.


Hey Andy

I know this thread has been discussed a lot but here are some additional
thoughts:

* I've seen similar problems in the past which related to managed backup.
 Probably not the case here, although perhaps you have a 'noisy neighbour'
on your machine who's doing some craziness at 04:30.

* What is your "Send notification when down" in Pingdom?  1?  Might be worth
bumping to two to remove false positives.

* If you're using New Relic, have you tried enabling their Availability
Monitoring?  Do they report the site as down also?

* What do you have PassengerMinInstances set to?


Cheers,
Olly

--
Olly Headey — Co-Founder and CTO
www.freeagentcentral.com

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