Something like: minidcos docker add-agent
See https://github.com/dcos/dcos-e2e/issues/1737 for a user request for this.
Another user discussion on this:
[Regarding the existing commands]
Although I fear that it will not work as all agents get the same volume and for frameworks like elastic I need several agents with a volume each and I think there will be weird behaviour if several (elastic) tasks write to the same folder.
[Regarding the proposed command]
I think this would work. With this I could first create a cluster with no private agents and then add them one by one giving each his own volume. Bonus points if I can add several volumes per agent.
It sometimes happens that I am using minidcos and then I wish I had an extra agent. Right now I have to destroy the cluster and start again.