Administering global service groups

Operations for the VCS global clusters option are enabled or restricted depending on the permissions with which you log on. The privileges associated with each user role are enforced for cross-cluster, service group operations.

See User privileges in global clusters.

To bring a service group online across clusters for the first time

hagrp -online -force

To bring a service group online across clusters

hagrp -online service_group -sys system [-clus cluster |

-localclus]

The option -clus brings the service group online on the system designated in the cluster. If a system is not specified, the service group is brought online on any node within the cluster. The option -localclus brings the service group online in the local cluster.

To bring a service group online on any node

hagrp -online [-force] service_group -any [-clus cluster |

-localclus]

The option -any specifies that HAD brings a failover group online on the optimal system, based on the requirements of service group workload management and existing group dependencies. If bringing a parallel group online, HAD brings the group online on each system designated in the SystemList attribute.

To take a service group offline across clusters

hagrp -offline [-force] [-ifprobed] service_group -sys system

[-clus cluster | -localclus]

The option -clus takes offline the service group on the system designated in the cluster.

To take a service group offline anywhere

hagrp -offline [-ifprobed] service_group -any

[-clus cluster | -localclus]

The option -any specifies that HAD takes a failover group offline on the system on which it is online. For a parallel group, HAD takes the group offline on each system on which the group is online. HAD adheres to the existing group dependencies when taking groups offline.

To switch a service group across clusters

hagrp -switch service_group -to system [-clus cluster |

-localclus [-nopre]]

The option -clus identifies the cluster to which the service group will be switched. The service group is brought online on the system specified by the -to system argument. If a system is not specified, the service group may be switched to any node within the specified cluster.

The option -nopre indicates that the VCS engine must switch the service group regardless of the value of the PreSwitch service group attribute.

See Service group attributes

To switch a service group anywhere

hagrp -switch service_group -any [-clus cluster | -localclus]

The -any option specifies that the VCS engine switches a service group to the best possible system on which it is currently not online, based on the value of the group's FailOverPolicy attribute. The VCS engine switches a global service group from a system to another system in the local cluster or a remote cluster.

If you do not specify the -clus option, the VCS engine by default assumes -localclus option and selects an available system within the local cluster.

The option -clus identifies the remote cluster to which the service group will be switched. The VCS engine then selects the target system on which to switch the service group.