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Cluster deconfiguration checklist

If you need to delete a cluster or a CRG, you must systematically remove different cluster components to ensure complete deconfiguration.

Table 1. Independent disk pool deconfiguration checklist for clusters
Independent disk pool requirements
__ If you plan to remove a subset of an independent disk pool group or remove the last independent disk pool in the switchable devices, you must end the CRG first. Use the End Cluster Resource Group (ENDCRG) command.
__ If you want delete an independent disk pool that is participating in a cluster, it is strongly recommended that you first remove the configuration object of the disk pool from the switchable device, also known as a device cluster resource group (CRG). To delete configuration object of a disk pool from a switchable device, follow these steps:
To delete a disk pool from a switchable device, follow these steps:
  1. In iSeries™ Navigator, expand Management Central > Clusters.
  2. Expand the cluster name containing switchable device > Switchable Devices.
  3. Click the name of the switchable device.
  4. In the right-hand pane of iSeries Navigator, right-click the disk pool, and select Remove.

Start of changeYou can also use the Remove CRG Device Entry (RMVCRGDEVE) command to remove the configuration object of the independent disk pool from the CRG.End of change
__ After you have removed the configuration object of the independent disk pool from the cluster switchable device, you can delete an independent disk pool .
__ Start of changeDelete device description for independent disk pool by completing these tasks:
  1. Start of changeOn command line interface, type WRKDEVD DEVD(*ASP) and press Enter.End of change
  2. Page down until you see the device description for the independent disk pool that you want to delete.
  3. Select Option 4 (Delete) by the name of the device description and press Enter.
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Table 2. Cluster resource group deconfiguration checklist for clusters
Cluster resource group requirement
__ Delete cluster resource group, by completing the either of the following tasks:Start of change
  1. If clustering is not active on the node, then type DLTCRG CRG(CRGNAME) on a command-line interface. CRGNAME is the name of the CRG that you want to delete. Press Enter.
  2. If clustering is active on the node, then type DLTCRGCLU CLUSTER(CLUSTERNAME) CRG(CRGNAME) on a command-line interface. CLUSTERNAME is the name of the cluster. CRGNAME is the name of the CRG that you want to delete. Press Enter.
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Parent topic: Plan for clusters
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