Hello all,
I have to manage a new environment with PowerHA enabled, and I'm wondering if my the cluster operations are fine to perform some OS-interventions, like full system-backups, IPL, OS upgrades
Cluster setup :
3 nodes in the same Device Domain
( -PS-partition
-PT-partition
-Flash Partition
CRGs
- Active - Dev CRG à pointing to IASP Device (with recovery domain set to PS & PT partition)
- Inactive - Data CRG à pointing to Flashcopy node (but inactive, à using the lab-services toolkit to perform the FC operation on IASP level - QZRDHASM)
- Active – Peer CRG à Application id : QZRDPWRHA.DLTPRFCLU
Now, what's the best approach to cover OS operations, like full backup, IPL, or OS upgrades ...
Which actions to deliver on Cluster/PowerHA level on the IBMi to prepare a partition for restricted state ...
Flash Partition:
Putting this Flash partition in restricted state to cover these OS related interventions ...
On Flash partition:
ENDCRG of the Peer CRG
ENDCLUNOD NODE(FlashCopy node)
And after the OS-intervention:
STRCLUNOD NODE(FlashCopy node)
STRCRG of the Peer CRG
PT Partition:
Putting this PT partition in restricted state to cover these OS related interventions ...
On PT partition:
ENDCRG of the Peer CRG
ENDCRG of the DEV CRP (IASP)
ENDCLUNOD NODE(PT node)
And after the OS-intervention:
STRCLUNOD NODE(PT node)
STRCRG of the DEV CRG (IASP)
STRCRG of the Peer CRG
Plus verify the replication is active and in-sync (DSPSVCSSN SSN(xxxx) DEVDMN(Dev-domain)
(no DETACH / REATTACH operation will be done !)
PS Partition:
Putting this PS partition in restricted state to cover these OS related interventions ... (after switching IASP to PT partition)
On PS partition:
Verify the replication is active and in-sync (DSPSVCSSN SSN(xxxx) DEVDMN(Dev-domain)
And 'Switchover Reverse replication' is set to *YES
CHGCRGPRI DEV-CRG (IASP)
- Production env gets opened on PT partition.
Further on on PS partition...
ENDCRG of the Peer CRG
ENDCRG of the DEV CRG (IASP)
ENDCLUNOD NODE(PS node)
And after the OS- intervention:
STRCLUNOD NODE(PS node)
STRCRG of the DEV CRG (IASP)
STRCRG of the Peer CRG
Plus verify the replication is active and in-sync (DSPSVCSSN SSN(xxxx) DEVDMN(Dev-domain)
(no DETACH / REATTACH operation will be done !)
CHGCRGPRI DEV-CRG (IASP) back to PS partition
- Production env gets opened on PS partition.
Is this approach fine ?
Should I include an end/start operation of the Admin Domain ?
All these commands can be executed on the related partition ?
Is my view on the cluster operations fine ... or are additional actions required.
Any recommendation is welcome.
Thanks for your feedback,
Jos
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Jos (Jozef) Thijs
Kyndryl
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