Nagios

Contains:

• Nagios Core
• Nagios Plugins
• Nagios NPRE (Remote Plugin Execution)
• Nagios NSCA (passive checks)
• Apache
• PHP

Processes are managed by supervisor, including cronjobs

Exports

• Nginx on 80
• Nagios NRPE on 5666
• Nagios NSCA on 5667
• /etc/nagios: configuration
• /usr/local/nagios/var/: nagios runtime

Variables

• NAGIOS_USER=nagiosadmin: Web UI username
• NAGIOS_PASS=nagiosadmin: Web UI password

Constants in Dockerfile

• NAGIOS_PHP_TIMEZONE=UTC: Timezone to use with PHP
• NAGIOS_TARBALL: Nagios tarball URL
• NAGIOS_PLUGINS_TARBALL: Nagios Plugins tarball URL
• NAGIOS_NRPE_TARBALL: Nagios NRPE tarball URL
• NAGIOS_NSCA_TARBALL: Nagios NSCA tarball URL

Example

Launch Nagios container:

$ docker start nagios || docker run --rm -p 80:80 -p 5666:5666 -e NAGIOS_USER=nagios -e NAGIOS_PASS=nagios -ti kolypto/nagios

Enjoy! :)