[AMBARI-3023] Create instructions to migrate ganglia folders for users who upgrade to the new ganglia rrd.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.0
• Fix Version/s: 1.4.1
• Assignee: Sumit Mohanty
• Reporter: Mahadev Konar
• Created: 25/Aug/13 21:48
• Updated: 17/Oct/13 22:18
• Resolved: 17/Oct/13 22:18

Description

Use the following script to read and update the config parameter that specifies the target folder for ganglia rrd files.

https://git-wip-us.apache.org/repos/asf/incubator-ambari/repo?p=incubator-ambari.git;a=blob;f=ambari-server/src/main/resources/scripts/configs.sh;h=2aa5250bde1d916e79fc08ecc2a6b00f292bc558;hb=HEAD
Script name: configs.sh

Procedure:
Decide on the new location for the rrd files (e.g. /newlocation/ganglia/rrds)
Stop Ganglia service and wait for it to stop completely
Get the existing folder path for Ganglia rrd files using configs.sh
E.g. ./configs.sh get localhost c1 global | grep "rrdcached_base_dir" (example assume localhost for ambari-server host, c1 for the name of the cluster)
Backup this folder and then remove it
Use configs.sh to update the config property with the new location for the rrd files
E.g. ./configs.sh set localhost c1 global "rrdcached_base_dir" "/newlocation/ganglia/rrds" (example assume localhost for ambari-server host, c1 for the name of the cluster)
Start Ganglia service
You may need to wait for 5-10 minutes to see the metrics getting populated