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


Migrating the VCS global clustering service group to IPv6 when VCS global clustering and VVR agents are configured
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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 vvrias05

On the Secondary site, enter the following:

# hagrp -offline -force ClusterService -sys vvrias07

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:111:210:20ff:fe98:0206 -clus sfha_site1
# haclus -modify ClusterAddress \
  fd4b:454e:205a:111:210:20ff:fe98:0205 -clus sfha_site2
# hahb -modify Icmp Arguments \
  fd4b:454e:205a:111:210:20ff:fe98:0205 -clus sfha_site2
# hares -modify gcoip Device lan3
# hares -modify gcoip Address \
  fd4b:454e:205a:111:210:20ff:fe98:0206
# hares -modify gcoip NetMask ""
# hares -modify gcoip PrefixLen 64
# hares -modify gconic Device lan3
# hares -modify gconic NetworkHosts \
  fd4b:454e:205a:111:211:43ff:fed3:f327
# hares -modify gconic Protocol IPv6
# 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 vvrias05
```
On the Secondary site, enter the following:
```
# hagrp -online -force ClusterService -sys vvrias07
```

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

cluster sfha_site1 (
        ClusterAddress = "fd4b:454e:205a:111:210:20ff:fe98:0206"
        SecureClus = 1
        )

remotecluster sfha_site2 (
        ClusterAddress = "fd4b:454e:205a:111:210:20ff:fe98:0205"
        )

heartbeat Icmp (
        ClusterList = { sfha_site2 }
        Arguments @sfha_site2 = { "fd4b:454e:205a:111:210:20ff:fe98:0205" }
        )

system vvrias05 (
        )

system vvrias06 (
        )

group ClusterService (
        SystemList = { vvrias05 = 0, vvrias06 = 1 }
        AutoStartList = { vvrias05, vvrias06 }
        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 = lan3
                Address = "fd4b:454e:205a:111:210:20ff:fe98:0206"
                PrefixLen = 64
                )

        NIC gconic (
                Device = lan3
                NetworkHosts = { "fd4b:454e:205a:111:211:43ff:fed3:f327" }
                Protocol = IPv6
                )

        gcoip requires gconic
        wac requires gcoip


        // resource dependency tree
        //
        //      group ClusterService
        //      {
        //      Application wac
        //          {
        //          IP gcoip
        //              {
        //              NIC gconic
        //              }
        //          }
        //      }

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