From T221872, I got rid of the Docker workers that had just 2GB RAM. That also means that the m4executor label is no more needed since all Docker workers are similar now. There are probably a few labels that are no more needed, so this task about listing all labels and find out what they are for/whether we can delete them.
https://integration.wikimedia.org/ci/computer/
All labels as at 2020-05-05:
contint1001:~$ (cd /var/lib/jenkins/nodes && grep -i '<label>' */config.xml)|sed -e 's/\(^\|:\)/|/g'
compiler1001.puppet-diffs.eqiad.wmflabs/config.xml | <label>puppet-compiler-node</label> |
compiler1002.puppet-diffs.eqiad.wmflabs/config.xml | <label>puppet-compiler-node</label> |
compiler1003.puppet-diffs.eqiad.wmflabs/config.xml | <label>puppet-compiler-node</label> |
contint1001/config.xml | <label>productionAgents blubber dockerPublish train pipelinelib</label> |
contint2001/config.xml | <label>productionAgents blubber dockerPublish train pipelinelib</label> |
deployment-deploy01/config.xml | <label>BetaClusterBastion</label> |
integration-agent-docker-1001/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1002/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1003/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1004/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1005/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1006/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1007/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1008/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1009/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1010/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1011/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1012/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1013/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-docker-1014/config.xml | <label>codehealth</label> |
integration-agent-docker-1016/config.xml | <label>Docker blubber pipelinelib</label> |
integration-agent-pkgbuilder-1001/config.xml | <label>DebianGlue</label> |
integration-agent-pkgbuilder-1002/config.xml | <label>DebianGlue</label> |
integration-agent-puppet-docker-1002/config.xml | <label>puppet</label> |
integration-agent-qemu-1013/config.xml | <label>Qemu</label> |
integration-castor03/config.xml | <label></label> |