Elasticsearch-health-monitoring plugin

Post by **WillemDH** » Fri Oct 02, 2015 11:07 am

Hello,

Just stumbled on this:

https://exchange.nagios.org/directory/A ... ng/details

And wondered if that is something we could use for nls?

Grtz

Willem

jolson · Post by **jolson** » Fri Oct 02, 2015 11:14 am

Definitely - there's actually a nice one that I have tested and verified as functional:
https://github.com/anchor/nagios-plugin-elasticsearch

Code: Select all

pip install nagios-plugin-elasticsearch
/usr/bin/check_elasticsearch -H 127.0.0.1 -m 1

In general, most plugins that work with elasticsearch will work with Nagios Log Server. Remember that the plugins should be run locally, since we deny outside access to elasticsearch without appropriate authentication.

Post by **WillemDH** » Mon Nov 16, 2015 7:42 am

Jesse,

I've been trying to plugin and something seems wrong with the perfdata. I'm not getting any graphs, although the service details do show perfdata. Any ideas?

jolson · Post by **jolson** » Mon Nov 16, 2015 1:26 pm

This wound up working for me. Did you wait the required 15 minutes or so for the service to plot a few data points?

2015-11-16-122558_1316x943_scrot.png

Post by **Box293** » Tue Nov 17, 2015 12:45 am

WillemDH wrote:Jesse,

I've been trying to plugin and something seems wrong with the perfdata. I'm not getting any graphs, although the service details do show perfdata. Any ideas?

Each datasource has 1 too many ;

cluster_nodes=2;;;;;

Should be:

cluster_nodes=2;;;;

Because of this the performance data will be discarded.

Post by **WillemDH** » Tue Nov 17, 2015 3:30 am

Hmmm ok, I see. Question is why Jesse's version has the correct amount of ; and I don't? had a look through the python script, but didn't immediately found any cause. When I execute this from CLI I also get 5 ;

jolson · Post by **jolson** » Tue Nov 17, 2015 10:09 am

My perfdata actually has five semicolons as well - I don't think that is the problem.

2015-11-17-090909_400x390_scrot.png

Willem, how do you have your service check configured? Mine is performing without the use of any flags
/usr/bin/check_elasticsearch
How is your check being performed?

Also, what version of python are you running?

Code: Select all

python -V

Post by **WillemDH** » Tue Nov 17, 2015 10:21 am

Jesse,

I'm executing the plugin with check_nrpe. I added

Code: Select all

command[check_elasticsearch]=/usr/bin/check_elasticsearch -H 127.0.0.1 -m 1

to /usr/local/nagios/etc/nrpe/common.cfg
And this is the command I'm executing from Nagios:

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COMMAND: /usr/local/nagios/libexec/check_nrpe -H nls-server -t 120 -c check_elasticsearch 
OUTPUT: Monitoring cluster 'ee9e60a0-f4cb-41ec-a97f-8f17434b748e' | cluster_nodes=2;;;;; cluster_master_eligible_nodes=2;;;;; cluster_data_nodes=2;;;;; cluster_active_shards=342;;;;; cluster_relocating_shards=0;;;;; cluster_initialising_shards=0;;;;; cluster_unassigned_shards=0;;;;; cluster_total_shards=342;;;;; cluster_total_indices=35;;;;; cluster_closed_indices=0;;;;; storesize=451346100119B;;;;; documents=487909914c;;;;; index_ops=27868667c;;;;; index_time=15449587ms;;;;; flush_ops=409c;;;;; flush_time=54353ms;;;;; throttle_time=6070112ms;;;;; index_ops=27868667c;;;;; index_time=15449587ms;;;;; delete_ops=0c;;;;; delete_time=0ms;;;;; get_ops=12389c;;;;; get_time=3130ms;;;;; exists_ops=12336c;;;;; exists_time=3126ms;;;;; missing_ops=53c;;;;; missing_time=4ms;;;;; query_ops=40003c;;;;; query_time=251105ms;;;;; fetch_ops=39736c;;;;; fetch_time=6876ms;;;;; merge_ops=21416c;;;;; refresh_ops=106074c;;;;; refresh_time=4176375ms;;;;; gc_old_count=4c;;;;; gc_young_count=15931c;;;;; heap_used=35%;;;;;

The service has been cloned from another service where perfdata works fine.

jolson · Post by **jolson** » Tue Nov 17, 2015 3:13 pm

Interesting. What happens if you make another service using the exact commands you've described to me? I replicated your setup on a test cluster of mine and everything worked properly.

What does your 'performance graphs' page look like? I assume it's simply blank?

Post by **Box293** » Tue Nov 17, 2015 6:24 pm

jolson wrote:My perfdata actually has five semicolons as well - I don't think that is the problem.

I believe newer versions of rrdtool is particular about this. I think it starts when you implement rrdcached as that installs a newer version of rrdtool than what is shipped with XI.

I'm pretty sure if @willemdh increases the logging verbosity then he would see the data being discarded in the logs:

http://support.nagios.com/wiki/index.ph ... leshooting

Code: Select all

tail -f /usr/local/nagios/var/perfdata.log > /tmp/perfdata.txt
tail -f /usr/local/nagios/var/npcd.log > /tmp/npcd.txt

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