Deleting the departing node from VCS configuration


Deleting the departing node from VCS configuration
Prev	Removing a node from a cluster	Next

Before you remove a node from the cluster you need to identify the service groups that run on the node.

You then need to perform the following actions:

Remove the service groups that other service groups depend on, or
Switch the service groups to another node that other service groups depend on.

To remove or switch service groups from the departing node

Switch failover service groups from the departing node. You can switch grp3 from node saturn to node nebula.
```
# hagrp -switch grp3 -to nebula
```
Check for any dependencies involving any service groups that run on the departing node; for example, grp4 runs only on the departing node.
```
# hagrp -dep
```
If the service group on the departing node requires other service groups - if it is a parent to service groups on other nodes - unlink the service groups.
```
# haconf -makerw
# hagrp -unlink grp4 grp1
```
These commands enable you to edit the configuration and to remove the requirement grp4 has for grp1.
Stop VCS on the departing node:
```
# hastop -sys saturn
```

Check the status again. The state of the departing node should be EXITED. Make sure that any service group that you want to fail over is online on other nodes.

# hastatus -summary
  
    -- SYSTEM STATE
    -- System      State          Frozen
    A  galaxy      RUNNING        0
    A  nebula      RUNNING        0
    A  saturn      EXITED         0

    -- GROUP STATE
    -- Group    System      Probed   AutoDisabled   State
    B  grp1     galaxy      Y        N              ONLINE
    B  grp1     nebula      Y        N              OFFLINE
    B  grp2     galaxy      Y        N              ONLINE
    B  grp3     nebula      Y        N              ONLINE
    B  grp3     saturn      Y        Y              OFFLINE
    B  grp4     saturn      Y        N              OFFLINE

Delete the departing node from the SystemList of service groups grp3 and grp4.

# hagrp -modify grp3 SystemList -delete saturn
# hagrp -modify grp4 SystemList -delete saturn

For the service groups that run only on the departing node, delete the resources from the group before you delete the group.

# hagrp -resources grp4
    processx_grp4
    processy_grp4
# hares -delete processx_grp4
# hares -delete processy_grp4

Delete the service group that is configured to run on the departing node.
```
# hagrp -delete grp4
```

Check the status.

# hastatus -summary
    -- SYSTEM STATE
    -- System      State          Frozen
    A  galaxy      RUNNING        0
    A  nebula      RUNNING        0
    A  saturn      EXITED         0

    -- GROUP STATE
    -- Group    System      Probed   AutoDisabled   State
    B  grp1     galaxy      Y        N              ONLINE
    B  grp1     nebula      Y        N              OFFLINE
    B  grp2     galaxy      Y        N              ONLINE
    B  grp3     nebula      Y        N              ONLINE

Delete the node from the cluster.
```
# hasys -delete saturn
```
Save the configuration, making it read only.
```
# haconf -dump -makero
```

Prev	Up	Next
Verifying the status of nodes and service groups	Home	Modifying configuration files on each remaining node