Our Prefect agent on Prefect 2 has stopped working and no longer seems to be receiving any communication from the Prefect server. The code warns that the agent will be deprecated in Sep 2024 but I was told that an agent will still work with Prefect cloud as long as we keep our agent running on Prefect 2. Is that no longer accurate? Is there a maximum Prefect 2 minor version in which the agent will still work? Or has Prefect Cloud totally stopped communicating with prefect agents?

hi @Austin Weisgrau - agents should still function in the 2.x lineage (all 2.x versions) can you be more specific about what you're seeing / the setup you have?

ok word - I've been having a lot of issues with the prefect agent lately that feel hard to diagnose. The agent will stop communicating with Prefect Cloud, restarting the agent can help, sometimes there seems to be a concurrency limit on how many flows the agent will kick off even though my config doesn't specify any concurrency limits. All of these issues started after September 2024 after a year+ of no issues and without any changes to our config. I'm feeling like I need to migrate to Prefect 3 in order to have reliability

iirc there are several memory-consumption related improvements with workers that haven't been backported to agents, so is it possible that your agent process is OOMing? or how is your agent process running / what infra is it kicking off runs on?

it spins up separate AWS ECS tasks to kick off flow runs, so it's just the one agent process running with no flows running in that container