mdebord/nagios4 repository overview

⁠Nagios 4 with SSL/TLS -- Docker Container

Fork of: https://github.com/guessi/docker-nagios4⁠

⁠Changes from Forked Source:

• Enforced 443
• Edit to redirect / to /nagios (apache)
• Merged some run commands for fewer layers
• Removed NRPE Server (check_nrpe is still here of course)

⁠Container Mounts:

• You'll want to mount your nagios config to /opt/nagios/etc inside the container
• Unless you rebuild the image injecting your certs, you'll need to mount yours to /etc/ssl/cert.cer and /etc/ssl/cert.key
• You can also make /opt/nagios/var a volume as well since Nagios uses it for stateful stuff. pid file and log will go there.

⁠Certs are REQUIRED.

You can add them as a volume (shown in example below)

OR

you can burn them into the image by editing the Dockerfile (see near the bottom of it for an example) and rebuilding an image from it.

⁠Example Run:

Mounting cert/key and both the var and etc config dir.

docker run -d \
  --name nagios \
  -p 443:443 \
  -v /path/to/nagios/data/etc:/opt/nagios/etc \
  -v /path/to/nagios/data/var:/opt/nagios/var \
  -v /path/to/certs/cert.cer:/etc/ssl/cert.cer \
  -v /path/to/certs/key.key:/etc/ssl/cert.key \
  mdebord/nagios4:latest

⁠Accessing Nagios:

Access it on straight https wherever you're running it.

Username: nagiosadmin Password: adminpass

Update these as you further customize your config.

⁠Don't have any config to mount? - Generate some!

You can temporarily run the container and copy the default config to your local dir:

For Example:

docker run -dit --name tempcontmd mdebord/nagios4:latest && docker cp tempcontmd:/opt/nagios/etc ./ && docker rm -f tempcontmd