I would recommend using the ping URL instead of stats for a load
balancer check.
http://127.0.0.1/ping
There may be something else going on and a looking at your logs for
errors would be a good idea but a ping is much less intensive than
running stats.
Grant
On Jun 18, 2010, at 0:41, Gareth Stokes <gar...@betechnology.com.au>
wrote:
Hey Dan,
Sounds like i do need to check some things then.
The load balancer does a health check every 30 seconds.
Going through the monitor logs, the cpu was peaking up to about 60%
which im not too sure if was caused by load or by the riak process
doing whatever it was doing.
And, I do seem to be running pretty high on memory so ill see if i
can lower that by configuring the buffer size on the innostore
backend.
If i see it happening again, ill try and gather more information.
gs
On 18 June 2010 14:15, Dan Reverri <d...@basho.com> wrote:
Hi Gareth,
I'm not aware of any mechanism that turns the stats url off for any
reason. How often are you pinging the stats url? Do the timeouts
correlate with any other event on the system (higher load, cron job,
etc.)?
Thanks,
Dan
Daniel Reverri
Developer Advocate
Basho Technologies, Inc.
d...@basho.com
On Thu, Jun 17, 2010 at 8:40 PM, Gareth Stokes <gar...@betechnology.com.au
> wrote:
hey guys,
so i have a cluster of 4 physical machines with a load balancer
sitting in front to handle requests going into riak.
i thought it would be a good idea (not anymore) to use the /stats
url to ping the machines the cluster for their health. this is what
i've noticed in the logs every few days or so
=ERROR REPORT==== 16-Jun-2010::03:48:37 ===
webmachine error: path="/stats"
{error,{exit,{timeout,{gen_server2,call,[riak_kv_stat,get_stats]}},
[{gen_server2,call,2},
{riak_kv_wm_stats,get_stats,0},
{riak_kv_wm_stats,produce_body,2},
{webmachine_resource,resource_call,3},
{webmachine_resource,do,3},
{webmachine_decision_core,resource_call,1},
{webmachine_decision_core,decision,1},
{webmachine_decision_core,handle_request,2}]}}
it lasts anywhere between 5 - 40 minutes.
what im thinking is that a riak machine will enter "maintenance"
mode every now and then, when it does it turns the /stats url off.
am i correct in thinking this, or should i be worried?
regards,
gareth stokes
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