Using tfs 2015 and tfs 2018 agents in the same machine

Question

I was working with Team Foundation Server 2015 where I had some releases configured for some environments (env1, env2, ...).

I installed TFS 2018 in a different machine. I migrated the code and I have completed the creation of a build definition.

I'd like to configure a release, using the old TFS 2015 environments. Can I install a TFS 2018 Agent, in the environments where I had installed the TFS 2015 agents?

In this way both of the agents would work without issues? The TFS 2015 Agent would work with TFS 2015 and the TFS 2018 Agent would work with TFS 2018 (both in the same machine).

I want to do this because my team is still working with TFS 2015, but as I am still setting up and testing TFS 2018 build/releases, I'd like TFS 2015 to work flawless (whithout any issue) while I am setting up and using TFS 2018 (with TFS 2018 Agents).

Answer 1

Different versions of agents can easily work on the same machine. As long as you keep the rule of thumb of 1 cpu core for the system and 1 cpu core per agent. I have had multiple versions of agents running before on the same build machine without any issue. The only problem would be to try and connect an agent with 1.* versions to TFS 2018, since that wouldn't work, but since that is not what you are asking for, I would say that you are good to go :-)