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dockerlabeldocker-swarm

How to list docker swarm nodes with labels

How can I easy print all available docker swarm nodes with their labels?

Added labels to nodes like
$ docker node update --label-add type=one my_node_name
And default listing nodes with docker node ls not showing filters.

Additionally I can list label inspecting each node like:

$ docker inspect my_node_name | grep type 
"type": "one"

---EDIT--

Similar question How do I filter docker swarm nodes by label? is about filtering my is about listing

Solution

  • You can run something like:

    docker node ls -q | xargs docker node inspect \
  -f '{{ .ID }} [{{ .Description.Hostname }}]: {{ .Spec.Labels }}'

    You can adjust that to use a range for prettier formatting instead of printing the default map:

    docker node ls -q | xargs docker node inspect \
  -f '{{ .ID }} [{{ .Description.Hostname }}]: {{ range $k, $v := .Spec.Labels }}{{ $k }}={{ $v }} {{end}}'

    Feel free to update the formatted output to the fields you need.