This is a Python script that collects data from Docker containers running on a host and then sends it over to a Zabbix server using the ZabbixSender/ZabbixTrapper functionality.

As of now it collects 3 metrics:

• Container status (running, exited, etc)
• Container exit code
• Container uptime

Triggers in the template are defined as so:

• If the container has a non-zero exit code
• If the container uptime is less than 90 seconds

I've included the template files as example. The important part is that the name of the host defined in the Zabbix server MUST match the name that the script is sending over to Zabbix. If the container name does not match the hostname in the server, no data will be shown.

• Clone this repository on the server.
• In main.py edit the zabbix_server address and the interval value. Default is every 60 seconds.
• Create a virtual environment:

python3 -m venv env

• Activate the virtual environment and install the requirements:

source env/bin/activate

pip install -r requirements.txt

• Create a systemd service file under /etc/systemd/system/container-stats.service with the following configuration:

[Unit]
Description=Monitor container uptimes
After=network.target

[Service]
Type=simple
ExecStart=/opt/docker-container-monitoring/env/bin/python3 /opt/docker-container-monitoring/main.py
Restart=always
User=root
WorkingDirectory=/opt/docker-container-monitoring
StandardOutput=file:/opt/docker-container-monitoring/log/main.log
StandardError=file:/opt/docker-container-monitoring/log/error.log

[Install]
WantedBy=multi-user.target

• Reload and start the service

systemctl daemon-reload

systemctl enable container-stats.service

systemctl start container-stats.service

• logs can be accessed from the logs/ directory

• On the Zabbix server a template has been created named Core containers. Apply this container to your host. Make sure name matches the container name.