Category: Docker
If a container won't start when using a Docker compose file, check the state of containers.
Run the following command:
$ docker ps -a
If the container isn't listed as either running, stopped or exited, double-check the image name specified for the container in your Docker compose file matches the name of an image in the Docker image repository you are deploying from.
image: ${REGISTRY}/${CONTEXT}/someapp:1.0.9
If the name is incorrect, the container startup will fail silently.
If you have specified a placement label in the compose file using a format similar to constraints: [node.labels.foo == true] check that the label exists on a node in the cluster. If the label has not been applied, the container startup will fail silently.
Run the following command (where node-name is the name of the node in the cluster you are inspecting):
docker node inspect --format '{{ .Spec.Labels }}' node-name
If the label does not exist, create it:
docker node update --label-add foo=true node-name
Try restarting services after the above configuration settings have been validated.