Sample prometheus that can be used as a sample to get Swarm cluster metrics
A sample image that can be used as a base for collecting Swarm mode metrics in Prometheus
You can use the provided
docker-compose.ymlfile as an example. You can deploy the full stack with the command:
docker stack deploy --compose-file docker-compose.yml monitoring
The grafana by default is exposed in the 3000 port and the credentials are admin/admin, be sure you use something different in your deploys.
Once everything is running you just need to connect to grafana and import the Docker Swarm & Container Overview
In case you don't have an Elasticsearch instance with logs and errors you could provide an invalid configuration or you could launch the sample stack with ELK.
docker stack deploy --compose-file docker-compose.logging.yml logging
Be patient, some services can take some minutes to start. This stack sample is using old versions of Elasticsearch and Kibana intentionally for simplify the configuration.
In case you have activated the metrics endpoint in your docker swarm cluster you could import the Docker Engine Metrics dashboard as well, which offers complementary data about the docker daemon itself.
More info available about this dashboard and its configuration in this post Docker Daemon Metrics in Prometheus