Is it safe to stop the prefect agent in order to update the

Question

Is it safe to stop the prefect agent in order to update the packages installed in the virtualenv Or would that cause any flow runs in progress to be killed restarted Asking for both prefect 1 x and 2 x as we are using both

jack · Answer

When running `pipenv sync` with the agent still running on Windows the command fails with error ``` ERROR Could not install packages due to an OSError WinError 32 The process cannot access the file because it is being used by another process REDACTED prefect exe ```

Kevin Wang · Answer

Hey for local infrastructure those runs are lost they get stuck on Running forever and no agent will pick those runs up anymore I ve had to manually clean up those runs by finding those Running for gt gt long hours and setting their state to Failed Crashed but if your jobs are executing elsewhere you may be fine

Kevin Wang · Answer

Is there a way to control an agent to draining where it stops reading from queues Then any local flow runs still running will complete and then the agent shuts down This would help us in cases of local infra instead of having your flow runs die when the agent is restarted we would 1 Drain the current agent 2 Startup a new agent

Zanie · Answer

I think we want to adjust the agent s subprocesses to be daemons so the agent can exit and the flow run subprocesses will continue running

jack · Answer

Is there a way to query the agent to see if any flow runs are in flight To check whether safe to stop the agent to update virtualenv

Zanie · Answer

Not right now we re planning some work in the future that would address this case though

Kevin Wang · Answer

gt we want to adjust the agent s subprocesses to be daemons so the agent can exit and the flow run subprocesses will continue running i see thanks for responding I now get a better sense for what s happening <https github com PrefectHQ prefect issues 7239 issuecomment 1284224787|in 7239> which you linked on Github slightly smiling face