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Docker monitoring with Netdata

Docker Engine is an open source containerization technology for building and containerizing your applications.

This module monitors one or more Docker Engine instances, depending on your configuration.

Metrics

All metrics have "docker." prefix.

MetricScopeDimensionsUnits
containers_stateglobalrunning, paused, stoppedcontainers
healthy_containersglobalhealthycontainers
unhealthy_containersglobalunhealthycontainers
imagesglobalactive, danglingimages
images_sizeglobalsizeB

Configuration

Edit the go.d/docker.conf configuration file using edit-config from the Netdata config directory, which is typically at /etc/netdata.

cd /etc/netdata # Replace this path with your Netdata config directory
sudo ./edit-config go.d/docker.conf
jobs:
- name: local
address: 'unix:///var/run/docker.sock'

- name: remote
address: 'tcp://203.0.113.10:2375'

For all available options see module configuration file.

Troubleshooting

To troubleshoot issues with the docker collector, run the go.d.plugin with the debug option enabled. The output should give you clues as to why the collector isn't working.

First, navigate to your plugins' directory, usually at /usr/libexec/netdata/plugins.d/. If that's not the case on your system, open netdata.conf and look for the setting plugins directory. Once you're in the plugin's directory, switch to the netdata user.

cd /usr/libexec/netdata/plugins.d/
sudo -u netdata -s

You can now run the go.d.plugin to debug the collector:

./go.d.plugin -d -m docker

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