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From Sebastian Estevez <sebastian.este...@datastax.com>
Subject Re: OpsCenter datastax-agent 300% CPU
Date Wed, 15 Jul 2015 21:04:04 GMT
OpsCenter 5.2 has a couple of fixes that may result in the symptoms you 
described:
http://docs.datas
tax.com/en/opscenter/5.2/opsc/release_notes/opscReleaseNotes520.html


   - Fixed issues with agent OOM when storing metrics for large numbers of 
   tables. (OPSC-5934
   - Improved handling of metrics overflow queue on agent. (OPSC-4618)


It's also got a lot of other great new features -- 
http://docs.datastax.com/en/opscenter/5.2/opsc/online_help/services/opscPerformanceService.html

Let us know if this stops once you upgrade.

All the best,


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Sebastián Estévez

Solutions Architect | 954 905 8615 | sebastian.estevez@datastax.com

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On Tue, Jul 14, 2015 at 4:40 PM, Mikhail Strebkov <strebkov@gmail.com> 
wrote:

> Looks like it dies with OOM: 
> https://gist.github.com/kluyg/03785041e16333015c2c
>
> On Tue, Jul 14, 2015 at 12:01 PM, Mikhail Strebkov <strebkov@gmail.com> 
> wrote:
>
>> OpsCenter 5.1.3 and datastax-agent-5.1.3-standalone.jar
>>
>> On Tue, Jul 14, 2015 at 12:00 PM, Sebastian Estevez <
>> sebastian.estevez@datastax.com> wrote:
>>
>>> What version of the agents and what version of OpsCenter are you running?
>>>
>>> I recently saw something like this and upgrading to matching versions 
>>> fixed the issue.
>>> On Jul 14, 2015 2:58 PM, "Mikhail Strebkov" <strebkov@gmail.com> wrote:
>>>
>>>> Hi everyone,
>>>>
>>>> Recently I've noticed that most of the nodes have OpsCenter agents 
>>>> running at 300% CPU. Each node has 4 cores, so agents are using 75% of 
>>>> total available CPU.
>>>>
>>>> We're running 5 nodes with OpenSource Cassandra 2.1.8 in AWS using 
>>>> Community AMI. OpsCenter version is 5.1.3. We're using Oracle Java version

>>>> 1.8.0_45.
>>>>
>>>> *  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND*
>>>> 31501 cassandr  20   0 3599m 296m  14m S  *339*  2.0  48:20.39 
>>>> /opt/jdk/jdk1.8.0_45/bin/java -Xmx128M -Djclouds.mpu.parts.magnitude=100000

>>>> -Djclouds.mpu.parts.size=16777216 
>>>> -Dopscenter.ssl.trustStore=/var/lib/datastax-agent/ssl/agentKeyStore 
>>>> -Dopscenter.ssl.keyStore=/var/lib/datastax-agent/ssl/agentKeyStore 
>>>> -Dopscenter.ssl.keyStorePassword=opscenter 
>>>> -Dagent-pidfile=/var/run/datastax-agent/datastax-agent.pid 
>>>> -Dlog4j.configuration=file:/etc/datastax-agent/log4j.properties 
>>>> -Djava.security.auth.login.config=/etc/datastax-agent/kerberos.config -jar

>>>> datastax-agent-5.1.3-standalone.jar 
>>>> /var/lib/datastax-agent/conf/address.yaml
>>>>
>>>> The logs from the agent looks strange to me: 
>>>> https://gist.github.com/kluyg/21f78af7adff0a940ed3
>>>>
>>>> The cluster itself seems to be fine, the load is small, nothing bad in 
>>>> Cassandra system.log.
>>>>
>>>> Does anyone know what to tune to bring it back to normal?
>>>>
>>>> Thanks,
>>>> Mikhail
>>>>
>>>
>>
>
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