af-silva/docker-munin-server

Docker image for basic munin stack

Munin Server

Docker container for munin monitoring.

Primarily created for unRAID server but has other use cases

Contents

• munin
• munin node
• lm-sensors (assumes host drivers are loaded)
• apache

Configuration

Override environment and volume mappings

Environment

• TZ
  • Timezone (default: Europe/London)
• SMTP_RELAY
  • IP/Hostnmae for an external relay
• HOSTNAME
  • Rename Munin local hostname from localhost.localdomain (default: unRAID)
• ALLOWED_HOSTS
  • CIDR notation eg 192.168.1.0/24(class C) or 192.168.0.3/32(single host). Use If intending to monitor this host from an external munin server (default: 127.0.0.1/32)

Volumes

• /var/cache/munin/www : HTML/charts generated by munin
• /var/lib/munin : retention required for historic data
• /etc/munin/munin-conf.d : Additional user configuration for hosts, contacts etc

Container Ports

• 80 : Apache
• 4949 : munin-node

Build

docker build -t shaf/munin-server .

Usage

# Override environment to suit your needs
# Appdata volumes for persistent data

docker run -d --name=munin-server --net="bridge" \
	-e ALLOWED_HOSTS="0/0" \
	-e HOSTNAME="unRAID" \
	-e TZ="Europe/London" \
	-p 8888:80/tcp -p 4949:4949/tcp \
	-v /mnt/user/appdata/munin-server/www:/var/cache/munin/www:rw \
	-v /mnt/user/appdata/munin-server/rrd:/var/lib/munin:rw \
	-v /mnt/user/appdata/munin-server/conf:/etc/munin/munin-conf.d:rw \
	-v /:/rootfs:ro \
	-v /sys:/sys:ro shaf/munin-server

# Barebones without data retention

docker run -d --name=munin-server --net="bridge" \
	-p 8888:80/tcp \
	-v /:/rootfs:ro \
	-v /sys:/sys:ro shaf/munin-server

Munin interface accessible via http://host:8888/

To Do

• Enable more pluggins
• Remove or move logging (apache,munin)
• Remove services cron/apache2
• SMTP alerts
• Slimstream, compile into alpine linux

Changelog