[ZOOKEEPER-4507] Create ZOO_DAEMON_OUT file backup when restarting the server - ASF JIRA

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Details

Type: Improvement
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: None
Fix Version/s: None
Component/s: scripts
Labels:
None

Description

The ZooKeeper server deamon out file zookeeper-$USER-server-$HOSTNAME.out is overwritten on every server restart.
Like the other log file we should create backup of this file also. Many times information logged into these file are useful in issue analysis. For example this contains the information about which transaction and which snapshot files were deleted. These are useful info, we should retain for some time. May be by default we can backup 5 .out files like below