NAGIOS Monitoring solution for JBoss 7.1

NAGIOS Monitoring solution for JBoss  :

1.       Performed the below on server where Nagios is installed:

Defined the host, jhostip and contact group in host.cfg : under /usr/local/nagios/etc/objects

define host{

        use                     linux-server            ; Name of host template to use

                                                        ; This host definition will inherit all variables that are defined

                                                        ; in (or inherited by) the linux-server host template definition.

        host_name               Prod***-APP1

        alias                   Prod***-APP1

        contact_groups          jboss-admin

        notifications_enabled   1

        address                 10.1.*.***

        }

define host{

        use                     linux-server            ; Name of host template to use

                                                        ; This host definition will inherit all variables that are defined

                                                        ; in (or inherited by) the linux-server host template definition.

        host_name               Prod***-APP2

        alias                   Prod***-APP2

        contact_groups          jboss-admin

        notifications_enabled   1

        address                 10.1.*.***

        }

2.       In the services.cfg, defined the services to be monitored like ping, 8080 port, load :

Define a service to check HTTP on the local machine.

# Disable notifications for this service by default, as not all users may have HTTP enabled.

define service{

        use                             local-service         ; Name of service template to use

        host_name                       App1

        service_description             HTTP

        check_command                   check_http!-p 8080

        check_interval                  1

        notifications_enabled           0

        max_check_attempts               4

        event_handler                   check_stopjb

3.       Since PRODUCTION had multiple servers, defined multiple services.cfg file, specific to each host to be monitored. For example below, I have defined 2 services.cfg file for 2 Jboss hosts:

[ec2-user@prodnagios-server prod_services]$ ls -ltr

total 88

-rw-r--r-- 1 nagios nagios 4363 Jun 23  2015 services.cfg

-rw-r--r-- 1 nagios nagios 5130 Jul 21  2015 prodAP1_Services.cfg

-rw-r--r-- 1 nagios nagios 4832 Jul 21  2015 prodAP2_Services.cfg

-

[ec2-user@prodnagios-server prod_services]$ pwd

/usr/local/nagios/etc/objects/prod_services

And each file have entries of services to be monitored like example:

define service{

        use                             local-service         ; Name of service template to use

        host_name                       Prod***-APP1

        service_description             HTTP

        check_command                   check_http!-p 8080

        check_interval                  1

        notifications_enabled           1

         notification_options            w,u,c,r

        contact_groups                  jboss-admin

        max_check_attempts               4

#        event_handler                   check_stopjb

        }

4.       All the above changes, have defined in main Nagios config file:  Nagios.conf:

# prod services

cfg_file=/usr/local/nagios/etc/objects/prod_services/prodAP1_Services.cfg

cfg_file=/usr/local/nagios/etc/objects/prod_services/prodAP2_Services.cfg

# Definitions for monitoring the local (Linux) host

cfg_file=/usr/local/nagios/etc/objects/host.cfg

5.       Made sure 8080,22 and all required ports are reachable to Jboss hosts by putting Nagios to appropriate security group in AWS. And also Nagios nrpe plugin is installed on all Jboss servers.

And ran the verify to make sure the configuration worked fine :

[ec2-user@prodnagios-server etc]$ sudo /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

Nagios Core 4.0.8

Copyright (c) 2009-present Nagios Core Development Team and Community Contributors

Copyright (c) 1999-2009 Ethan Galstad

Last Modified: 08-12-2014

License: GPL

Website: http://www.nagios.org

Reading configuration data...

   Read main config file okay...

   Read object config files okay...

Running pre-flight check on configuration data...

Checking objects...

        Checked 77 services.

        Checked 12 hosts.

        Checked 1 host groups.

        Checked 0 service groups.

        Checked 6 contacts.

        Checked 1 contact groups.

        Checked 35 commands.

        Checked 5 time periods.

        Checked 0 host escalations.

        Checked 0 service escalations.

Checking for circular paths...

        Checked 12 hosts

        Checked 0 service dependencies

        Checked 0 host dependencies

        Checked 5 timeperiods

Checking global event handlers...

Checking obsessive compulsive processor commands...

Checking misc settings...

Total Warnings: 0

Total Errors:   0

Things look okay - No serious problems were detected during the pre-flight check

6.       Could monitor the Jboss through console:

7.       Also defined my email and Mobile to get alerts in contacts.cfg file:

The contacts.cfg file must be defined in Nagios.cfg file as well:

# host groups, contacts, contact groups, services, etc.

cfg_file=/usr/local/nagios/etc/objects/contacts.cfg

define contact{

        contact_name                    SandeshSMS          ; Short name of user

        use                             generic-contact         ; Inherit default values from generic-contact template (defined above)

        alias                           Nagios Admin            ; Full name of user

        email                          **********@txt.att.net       ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******

       service_notifications_enabled    1

        }

define contact{

        contact_name                    Sandesh         ; Short name of user

        use                             generic-contact         ; Inherit default values from generic-contact template (defined above)

        alias                           Nagios Admin            ; Full name of user

        email                           Sandesh.achar@********.com       ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******

       service_notifications_enabled    1

        }