First thing, this bugs me, wondering what you firewall setup
is.
If your restarting mogrels, and nginx every night, something
is
getting "carried" over,
or your getting a DOS attack.
For me, think I would look at half-open connections, and a
packet
trace for arround the time the resets are occurring.
Also you may want to check your kernel paramters.
Also sounds like a few different problems your having.
On Dec 17, 11:38 pm, Bill Turner <billtur... gmail.com> wrote:
> Hi folks,
> I've searched and search, but can't seem to find
solutions that work
> for me. I'm hoping if I include enough information I
may find some
> help here. Here are the problems I am getting reports
on:
>
> 1) While using the application, the users are getting
intermittent
> "Connection reset by peer" errors in the
browser. I'm told it doesn't
> matter what action they're performing, just that it is
happening more
> and more often. I just turned on my nginx error logs to
see if
> anything will show up in there (saw something to this
effect in
> another thread somewhere).
>
> 2) I still have problems with the mongrel processes
gobbling up memory
> to the point where everything seizes up. It seems to
happen about once
> a week, or every other week. I've tried so many options
that I've read
> here and in the mongrel mailing list, but none seem to
have worked.
> (I've tried the verification_timeout setting, and the
> verify_active_connections thread suggestions). I'm
including my mysql
> config below as maybe the problem lies in there.
>
> The server load never gets very high. The only
exception is when the
> mongrel process get out of control.
>
> My set up:
>
> Ubuntu 7.10
> Ruby: 1.8.6
> Rails: 1.2.6
> MySQL: Ver 14.12 Distrib 5.0.45 (mysql gem: 2.7)
> Mongrel: 1.1.1 / mongrel_cluster: 1.0.4
> nginx: 0.5.26
>
> * nginx has 4 worker processes, and for the main app I
have 10 mongrel
> servers
> * Every night, the nginx and mongrel processes restart
to rotate the
> logs
>
> I may need help with optimizing mysql, here are the
config options
> from my.cnf:
>
> key_buffer = 16M
> max_allowed_packet = 16M
> thread_stack = 128K
> thread_cache_size = 8
> #max_connections = 100
> #table_cache = 64
> #thread_concurrency = 10
> #
> # * Query Cache Configuration
> #
> query_cache_limit = 1M
> query_cache_size = 32M
>
> [isamchk]
> key_buffer = 16M
>
> If there's any other information needed, I'll gladly
provide if asked.
>
> Many thanks.
>
> Bill
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