[AMBARI-15063] Metrics monitor fails on restart

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.2.1
• Fix Version/s: 2.2.2
• Component/s: ambari-metrics
• Assignee: Aravindan Vijayan
• Reporter: Aravindan Vijayan
• Created: 16/Feb/16 21:23
• Updated: 18/Feb/16 04:10
• Resolved: 16/Feb/16 22:41

Description

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.

Issue Links

• links to: Review Board