Monit - UNIX Systems Management

Run Monit inside docker. From project docker-monit

Monit is a free open source utility for managing and monitoring, processes, programs, files, directories and filesystems on a UNIX system. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations.

Default username/password: admin/monit

Versions

Docker image	Monit
monit:latest	5.34.0

Docker setup

Install docker: https://docs.docker.com/engine/installation/

Install docker compose: https://docs.docker.com/compose/install/

Docker documentation: https://docs.docker.com/

Build-in docker image

• build docker image docker build -t monit .

• start monit: docker run --rm -it -p 2812:2812 -v $(pwd)/monitrc:/etc/monitrc monit

note: monitrc is a file! create before docker run.

Build-in docker image arm64

• build docker image docker buildx build --platform arm64 -t monit .

• start monit: docker run --rm -it -p 2812:2812 -v $(pwd)/monitrc:/etc/monitrc monit

note: monitrc is a file! create before docker run.

Docker Hub image

• pull docker image from gitlab: docker pull registry.gitlab.com/manalejandro/monit-docker/monit:latest

• start monit: docker run --rm -it -p 2812:2812 -v $(pwd)/monitrc:/etc/monitrc registry.gitlab.com/manalejandro/monit-docker/monit:latest

• create a docker container:

docker create \
  --name=monit \
  -p 2812:2812 \
  -v $(pwd)/monitrc:/etc/monitrc \
  registry.gitlab.com/manalejandro/monit-docker/monit:latest

Docker compose

• create a container using docker-compose: docker-compose up --no-start

• start monit: docker-compose up

Troubleshooting

If when starting Monit returns the following message: The control file '/etc/monitrc' permission 0755 is wrong, maximum 0700 allowed, simply give the appropriate permissions to monitrc: chmod 700 monitrc.

If when starting Monit returns the following message: input in flex scanner failed, simply you need to create an empty file with name monitrc in your source folder will do.