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Monthly Archives: March 2017

Placing custom Nagios NRPE script to monitor NFS Client

Written on March 24, 2017 at 1:39 AM, by

Changes in the Nagios server: ¬† First of all enable NRPE plugin for the client host in Nagios server:   Make sure check_nrpe command is defined inside commands.cfg file. If not, add it (assuming nrpe plugin is installed along with Nagios ):   define command{ command_name check_nrpe command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ }   […]

Enabling session persistence (stickiness) for nginx (open source)

Written on March 17, 2017 at 12:03 AM, by

For those who are not willing to spend some bucks on purchasing nginx plus but your manager¬†insist upon enabling session persistence in nginx, the best option would be check the nginx approved set of modules here –> Nginx 3rd party modules There is a 3rd party module in that list by the name : Sticky […]

keepalived setup for application high availability in centos7

Written on March 14, 2017 at 8:08 AM, by

The requirement was to setup a HA application environment. We had two tomcat servers as backend nodes (application hosting servers). An nginx server was put in front of these two servers to give two functinalities: load-balancing and reverse proxy. Two Nginx servers were setup. One would be acting as a backup node if the primary […]