GitHub user bradh352 created a discussion: Agent stuck in "Connecting" state,
4.21
I have an agent stuck in the "Connecting" state, it seems like its the fault of
the management server in some way as the agent just keeps restarting
The interesting log on the management server says it can't acquire a lock on
the host, I'm assuming this is something DB related?
```
2025-10-28 15:04:36,040 DEBUG [c.c.a.m.ClusteredAgentManagerImpl]
(AgentConnectTaskPool-2:[ctx-abe4ba59]) (logid:c6a383ed) Failed to handle host
connection: com.cloud.exception.ConnectionException: Unable to acquire lock on
host Host
{"id":31,"name":"hv102.internal.nexthop.ai","type":"Routing","uuid":"8a8a2f0b-be76-4179-a2b9-c9785a81d061"},
to process agent connection
```
GitHub link: https://github.com/apache/cloudstack/discussions/11920
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