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Posted to user@cassandra.apache.org by Shuo Chen <ch...@gmail.com> on 2015/09/11 04:36:37 UTC
confusion about nodetool cfstats
Hi!
I want to monitor columnfamily space used with nodetool cfstats. The
document says,
Space used (live), bytes:9592399Space that is measured depends on operating
system
Re: confusion about nodetool cfstats
Posted by Chris Lohfink <cl...@gmail.com>.
All metrics reported in cfstats are for just the one node (its pulled from
jmx). To see cluster aggregates its best to use a tool for monitoring like
opscenter, graphite, influxdb, nagios etc. Its a good idea to have one of
these something like this setup for many reasons anyway.
If you are using DSE you can use the performance service to get some of the
metrics (including aggregates across dc, keyspace, cluster etc) from CQL.
Chris Lohfink
On Thu, Sep 10, 2015 at 9:38 PM, Shuo Chen <ch...@gmail.com> wrote:
> Sorry to send the previous message.
>
> I want to monitor columnfamily space used with nodetool cfstats. The
> document says,
> Space used (live), bytes:9592399Space that is measured depends on
> operating system
>
> Is this metric shows space used on one nodes or on the whole cluster?
>
> If it is just one node, is there a method to retrieve load info on the
> whole cluster?
>
> ----
> Shuo Chen
>
>
> On Fri, Sep 11, 2015 at 10:36 AM, Shuo Chen <ch...@gmail.com> wrote:
>
>> Hi!
>>
>> I want to monitor columnfamily space used with nodetool cfstats. The
>> document says,
>> Space used (live), bytes:9592399Space that is measured depends on
>> operating system
>>
>
>
Re: confusion about nodetool cfstats
Posted by Otis Gospodnetić <ot...@gmail.com>.
It's a single node, metric value showing just a single moment in time.
Something with historical data, aggregation across the whole cluster, etc.
may be better. See SPM for Cassandra or OpsCenter - they come with out of
the box reports for Cassandra.
Otis
--
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On Thu, Sep 10, 2015 at 10:38 PM, Shuo Chen <ch...@gmail.com> wrote:
> Sorry to send the previous message.
>
> I want to monitor columnfamily space used with nodetool cfstats. The
> document says,
> Space used (live), bytes:9592399Space that is measured depends on
> operating system
>
> Is this metric shows space used on one nodes or on the whole cluster?
>
> If it is just one node, is there a method to retrieve load info on the
> whole cluster?
>
> ----
> Shuo Chen
>
>
> On Fri, Sep 11, 2015 at 10:36 AM, Shuo Chen <ch...@gmail.com> wrote:
>
>> Hi!
>>
>> I want to monitor columnfamily space used with nodetool cfstats. The
>> document says,
>> Space used (live), bytes:9592399Space that is measured depends on
>> operating system
>>
>
>
Re: confusion about nodetool cfstats
Posted by Shuo Chen <ch...@gmail.com>.
Sorry to send the previous message.
I want to monitor columnfamily space used with nodetool cfstats. The
document says,
Space used (live), bytes:9592399Space that is measured depends on operating
system
Is this metric shows space used on one nodes or on the whole cluster?
If it is just one node, is there a method to retrieve load info on the
whole cluster?
----
Shuo Chen
On Fri, Sep 11, 2015 at 10:36 AM, Shuo Chen <ch...@gmail.com> wrote:
> Hi!
>
> I want to monitor columnfamily space used with nodetool cfstats. The
> document says,
> Space used (live), bytes:9592399Space that is measured depends on
> operating system
>