Re: recognising dead instances
Re: recognising dead instances
- Subject: Re: recognising dead instances
- From: Denis Frolov <email@hidden>
- Date: Mon, 25 Jan 2010 11:52:10 +0300
Hi Lachlan,
Checking direct actions is a great idea. We also do a periodic
"netstat -n | grep CLOSE_WAIT", kill the instances which have too many
connections in CLOSE_WAIT state and send alert emails with additional
info (mysql process list, app's intance log tail, instance's dump,
open files via lsof).
Arguably, this is a bit easier to implement and maintain on a server
with lots of different apps. Especially, when you cannot modify the
app itself.
On Mon, Jan 25, 2010 at 9:40 AM, Lachlan Deck <email@hidden> wrote:
> Hi all,
>
> just polling for ideas / techniques people use in detecting dead instances. Naturally when there's lots of instances running in deployment it can be hard to know if a particular instance has locked up for some reason (and this can sometimes have a flow on affect with the adaptor).
>
> Thanks.
>
> with regards,
> --
>
> Lachlan Deck
>
>
>
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