Tanti Technology

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Multi-platform UNIX systems consultant and administrator in mutualized and virtualized environments I have 4.5+ years experience in AIX system Administration field. This site will be helpful for system administrator in their day to day activities.Your comments on posts are welcome.This blog is all about IBM AIX Unix flavour. This blog will be used by System admins who will be using AIX in their work life. It can also be used for those newbies who want to get certifications in AIX Administration. This blog will be updated frequently to help the system admins and other new learners. DISCLAIMER: Please note that blog owner takes no responsibility of any kind for any type of data loss or damage by trying any of the command/method mentioned in this blog. You may use the commands/method/scripts on your own responsibility. If you find something useful, a comment would be appreciated to let other viewers also know that the solution/method work(ed) for you.

Tuesday 12 November 2013

cluster states



QHA
The standard tool for cluster monitoring is clstat, which comes along with HACMP. Clstat is rather slow with its updates, and sometimes the required clinfo deamon needs restarting in order to get it operational, so this is, well, not good. There's a script which is a lot better. It is written by HACMP guru Alex Abderrazag. This script shows you the correct HACMP status, along with adapter and volume group information. It works fine on HACMP 5.2 until 6.1. You can download it here: qha. This is version 8.03 (latest update: 25/04/2007). For the latest version, check www.lpar.co.uk.

This tiny but effective tool accepts two flags:
  •   -n (show network info)
  •   -v (show shared online vg)
So, you can run # qha or # qha -v or # qha -n or # qha -nv. 

A description of the possible cluster states:
  • ST_INIT: cluster configured and down
  • ST_JOINING: node joining the cluster
  • ST_VOTING: Inter-node decision state for an event
  • ST_RP_RUNNING: cluster running recovery program
  • ST_BARRIER: clstrmgr waiting at the barrier statement
  • ST_CBARRIER: clstrmgr is exiting recovery program
  • ST_UNSTABLE: cluster unstable
  • NOT_CONFIGURED: HA installed but not configured
  • RP_FAILED: event script failed
  • ST_STABLE: cluster services are running with managed resources (stable cluster) or cluster services have been "forced" down with resource groups potentially in the UNMANAGED state (HACMP 5.4 only)



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