Archive for September 2014

Check a html page with check_http

With the check_http Nagios plugin we can check that a url returns an OK status code as well as verifying the page contains a certain string of text. The usage format is a s follows… ?View Code BASH/usr/local/nagios/libexec/check_http -H hostname -r search_string For example… ?View Code BASH/usr/local/nagios/libexec/check_http -H -r "wordpress" If you want to make […]

Modifying elasticsearch index settings

To view the settings of an index run the following at the command-line… ?View Code BASHcurl -XGET http://hostname:9200/indexname/_settings From here you can indeify the setting you need and modify it as you wish. This example sets the number of replicas to zero. ?View Code BASHcurl -XPUT http://hostname:9200/indexname/_settings -d ‘{ "index": {"number_of_replicas":"0"}}’ For further details see […]

Removing logstash indicies from elasticsearch‏

I’ve been playing with EFK and elasticsearch ended up eating all of the RAM on my test system. I discovered this was due to it attempting to cache all these indexes. Since this is a test system I’m not too bothered about having a long history here so I wrote this bash script to remove […]