munin-alpine

Container image for Munin server optimized for a large number of hosts in an effective manner.

• rrdcached is used to be able to handle a large number of hosts

• fcgi is used for generation of graphs on demand and not cron

Inspired from build-failures docker-munin-server.

Tags

• latest (Dockerfile)

Environment variables

• NODES

Format [group1;]node1:ip1[:port1] [group2;]node2:ip2[:port2]...

• SNMP_NODES

Format [group1;]node1:commutiy1: [group2;]node2:community2:...

Check SNMP units directly from the container. Defaults to SNMP version 2c.

• TZ

Time zone. Defaults to UTC.

Exposed ports

• 80

Volumes

For persistense.

• /etc/munin/munin-conf.d/

Configuration files included on runtime. The files nodes.conf and snmp-nodes.conf are generated by this container.

• /etc/munin/plugin-conf.d/

Configuration files for plugins. The file snmp_communities is generated by this container, but custom changes will not be overwritten.

• /var/lib/munin/

All RRD files and temporary files.

• /var/log/munin/

Log files.

How to use this container

docker run -d \
  -v /etc/munin/munin-conf.d:/etc/munin/munin-conf.d \
  -v /etc/munin/plugin-conf.d:/etc/munin/plugin-conf.d \
  -v /var/lib/munin:/var/lib/munin \
  -v /var/log/munin:/var/log/munin \
  -e NODES="server1:10.0.0.2 server2:10.1.0.2" \
  -e SNMP_NODES="routers;10.0.0.1:mycommunity routers;10.1.0.1:mycommunity" \
  -p 80:80 \
  --name munin-server \
  aheimsbakk/munin-alpine

Access container at http://host/munin/