GeoHelm/docs/resources/nagios.rst

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2024-01-27 19:04:46 +00:00
Nagios
------
If you wish to set up monitoring for your instance, you can do so with our Nagios Module:
https://github.com/cited/nagios-webmin-module
Nagios and nrpe client are produced by `Nagios`_
.. _`Nagios`: https://www.nagios.com/
`Nagios Exchange`_ provides plugins, addons, docs, extensions and other tools
.. _`Nagios Exchange`: https://exchange.nagios.org/
Below are some of the main sections for setting up basic monitoring.
nagiso.cfg to register our geosuite.cfg file
.. code-block:: console
# You can specify individual object config files as shown below:
cfg_file=/usr/local/nagios/etc/objects/commands.cfg
# Definitions for monitoring the local (Linux) host
cfg_file=/usr/local/nagios/etc/objects/geosuite.cfg
commands.cfg
.. code-block:: console
# Monitor GeoServer: Monitor web page in addition to Tomcat to insure GeoServer is accessible
define command {
command_name geoserver_URL
command_line /usr/local/nagios/libexec/check_http_content -U "http://domain.com/geoserver/web/" -m "Welcome"
}
# Monitor PostgreSQL using the check_postgres.pl plugin:
define command {
command_name check_postgres_connection
command_line /usr/local/nagios/libexec/check_postgres.pl --dbservice=$HOSTADDRESS$ --action=connection
}
# Monitor disk usage using custom script, check_diskspace (script is below)
define command {
command_name check_diskspace
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c check_diskspace
geosuite.cfg file
.. code-block:: console
# Using Slack plugin to get notifications on Slack channel
# Using check_diskspace (see next section)
define host {
use linux-server
host_name geosuite
alias geosuite
address 192.1.2.3
register 1
}
define service {
host_name geosuite
service_description PING
check_command check_ping!100.0,20%!500.0,60%
max_check_attempts 2
check_interval 2
retry_interval 2
check_period 24x7
check_freshness 1
contact_groups admins,slack
notification_interval 2
notification_period 24x7
notifications_enabled 1
register 1
}
define service {
host_name geosuite
service_description Disk Space
check_command check_diskspace
max_check_attempts 2
check_interval 2
retry_interval 2
check_period 24x7
check_freshness 1
contact_groups admins,slack
notification_interval 2
notification_period 24x7
notifications_enabled 1
register 1
}
define service {
host_name geosuite
service_description Check SSH
check_command check_ssh!-p 48316
max_check_attempts 2
check_interval 2
retry_interval 2
check_period 24x7
check_freshness 1
contact_groups admins,slack
notification_interval 2
notification_period 24x7
notifications_enabled 1
register 1
}
define service {
host_name geosuite
service_description Check HTTP
check_command check_http
max_check_attempts 2
check_interval 2
retry_interval 2
check_period 24x7
check_freshness 1
contact_groups admins,slack
notification_interval 2
notification_period 24x7
notifications_enabled 1
register 1
}
define service {
host_name geosuite
service_description Check PostgreSQL
check_command check_postgres_connection
max_check_attempts 2
check_interval 2
retry_interval 2
check_period 24x7
check_freshness 1
contact_groups admins,slack
notification_interval 2
notification_period 24x7
notifications_enabled 1
register 1
}
define service {
host_name geosuite
service_description GeoServer Status
check_command geoserver_URL
max_check_attempts 2
check_interval 2
retry_interval 2
check_period 24x7
check_freshness 1
contact_groups admins,slackmins
notification_interval 2
notification_period 24x7
notifications_enabled 1
register 1
}
You can find the PostgreSQL monitor plugin on Nagios Exchange.
For disk usage monitoring, you can use our check_diskspace script below:
.. code-block:: console
#!/bin/bash
chkuse=$(df -h |grep '/' |grep -v 'VolGroup' |awk '{if ($6 == "") print $4,$5; else print $5,$6;}')
echo "${chkuse}" | grep -o '[0-9]*' | while read mounts
do
if [ $mounts -gt 98 ]
then
echocrit=$(echo "${chkuse}" | grep $mounts)
echo $crit "CRITICAL"
exit 2
elif [ $mounts -gt 95 ]
then
echowarn=$(echo "${chkuse}" | grep $mounts)
echo $warn "WARNING"
exit 1
fi
done
wait
rc=$?
if [ $rc -eq 0 ]; then
echo "OK"
fi
exit ${rc}