Dmytro Sen created AMBARI-12548:
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Summary: Ambari Agent does not register / heartbeat if "df"
command hangs
Key: AMBARI-12548
URL: https://issues.apache.org/jira/browse/AMBARI-12548
Project: Ambari
Issue Type: Bug
Components: ambari-agent
Affects Versions: 2.1.0
Reporter: Dmytro Sen
Assignee: Dmytro Sen
Priority: Critical
Fix For: 2.1.1
The agent executes the "df" command when it starts up.
In rare scenarios, this command can hang (can even hanging for several days
without any timeout). When this happens the agent won't move forward to the
process of registration, etc.
There's an ambari-server property called agent.check.mounts.timeout. This can
be defined to force a timeout.
However, we should always have a default timeout on the agent script side, even
if this property is not defined to avoid a situation where the agent is
completely hung.
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