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InfoScale™ 9.0 Replication Administrator's Guide - AIX

Last Published: 2025-04-14

Product(s): InfoScale & Storage Foundation (9.0)

Platform: AIX

Migrating the VCS global clustering service group to IPv6 when VCS global clustering and VVR agents are configured

An online migration of the VCS global clustering service group is not supported. Put the service group offline and then modify the required parameters.

To migrate the VCS global clustering service to IPv6, do the following:

Take the ClusterService Group offline on the Primary and Secondary sites.
Edit the VCS configuration for IPv6 addresses.
Bring the ClusterService Group online on the Primary and Secondary sites.

To take the ClusterService Group offline on the Primary and Secondary sites

On the Primary and Secondary sites, enter the following command:
```
# hagrp -offline -force ClusterService -sys node_name
```
For example, on the Primary site, enter the following:
```
# hagrp -offline -force ClusterService -sys swax25
```
On the Secondary site, enter the following:
```
# hagrp -offline -force ClusterService -sys swax27
```

Note:

Putting the service group offline does not impact the replication between the sites.

To edit the VCS configuration for IPv6 addresses

On the Primary site, make the VCS configuration writeable. Enter the following:
```
# haconf -makerw
```

Modify the VCS global clustering related attribute values to support the IPv6 environment. Enter the following:

# haclus -modify ClusterAddress \
  fd4b:454e:205a:111:213:72ff:fe5b:2f67 -clus sfcfs_gco1
# haclus -modify ClusterAddress \
  fd4b:454e:205a:111:211:43ff:fede:1e11 -clus sfcfs_gco2
# hahb -modify Icmp Arguments \
  fd4b:454e:205a:111:211:43ff:fede:1e11 -clus sfcfs_gco2
# hares -modify gcoip Address \
  fd4b:454e:205a:111:213:72ff:fe5b:2f67
# hares -modify gcoip Enabled 1
# hares -modify gcoip PrefixLen 64
# hares -modify gcoip NetMask ""
# hares -modify gcoip Device en1
# hares -modify gconic Device en1
# hares -modify gconic Enabled 1

Save your configuration changes. Enter the following:
```
# haconf -dump -makero
```
Modify the VCS global clustering related attributes on the Secondary site using steps 1 through 3.

To bring the ClusterService Group online on the Primary and Secondary sites

On the Primary and Secondary sites, enter the following:
```
# hagrp -online ClusterService -sys node_name
```
For example, on the Primary site, enter the following:
```
# hagrp -online -force ClusterService -sys swax25
```
On the Secondary site, enter the following:
```
# hagrp -online -force ClusterService -sys swax27
```

The global clustering ClusterService Group in the VCS main.cf configuration file now looks similar to the following:

cluster sfcfs_gco1 (
        ClusterAddress = "fd4b:454e:205a:111:213:72ff:fe5b:2f67"
        SecureClus = 1
        HacliUserLevel = COMMANDROOT
        )

remotecluster sfcfs_gco2 (
        ClusterAddress = "fd4b:454e:205a:111:211:43ff:fede:1e11"
        )

heartbeat Icmp (
        ClusterList = { sfcfs_gco2 }
        Arguments @sfcfs_gco2 = { "fd4b:454e:205a:111:211:43ff:fede:1e11" }
        )

system swax20 (
        )

system swax21 (
        )

group ClusterService (
        SystemList = { swax20 = 0, swax21 = 1 }
        AutoStartList = { swax20, swax21 }
        OnlineRetryLimit = 3
        OnlineRetryInterval = 120
        )

        Application wac (
                StartProgram = "/opt/VRTSvcs/bin/wacstart"
                StopProgram = "/opt/VRTSvcs/bin/wacstop"
                MonitorProcesses = { "/opt/VRTSvcs/bin/wac" }
                RestartLimit = 3
                )

        IP gcoip (
                Device = en1
                Address = "fd4b:454e:205a:111:213:72ff:fe5b:2f67"
                PrefixLen = 64
                )

        NIC gconic (
                Device = en1
                )

        gcoip requires gconic
        wac requires gcoip