Aravindan Vijayan created AMBARI-15063:
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Summary: Metrics monitor fails on restart
Key: AMBARI-15063
URL: https://issues.apache.org/jira/browse/AMBARI-15063
Project: Ambari
Issue Type: Bug
Components: ambari-metrics
Affects Versions: 2.2.1
Reporter: Aravindan Vijayan
Assignee: Aravindan Vijayan
Priority: Critical
Fix For: 2.2.2
PROBLEM
Metrics Monitor failed to START at install on 1 host. Restart also never worked.
BUG
Ambari metrics monitor startup script had a stale pid file with value as 327,
and it used "ps ax -o pid | grep <pid>" to check if the process is running.
This returned true since there was a process with process Id = 3327. Hence, the
script always assumed that the metric monitor process was already running.
FIX
Change to use grep exact match (grep -w) while checking for process with
process ID.
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