HP Serviceguard Extension for RAC (SGeRAC) manual Cluster Status, Node Status and State

Cluster Status

The status of a cluster may be one of the following:

•Up. At least one node has a running cluster daemon, and reconfiguration is not taking place.

•Down. No cluster daemons are running on any cluster node.

•Starting. The cluster is in the process of determining its active membership. At least one cluster daemon is running.

•Unknown. The node on which the cmviewcl command is issued cannot communicate with other nodes in the cluster.

Node Status and State

The status of a node is either up (active as a member of the cluster) or down (inactive in the cluster), depending on whether its cluster daemon is running or not. Note that a node might be down from the cluster perspective, but still up and running HP-UX.

Serviceguard Manager will display the alerts and status icon for the cluster, node, and package health.

A node may also be in one of the following states:

•Failed. A node never sees itself in this state. Other active members of the cluster will see a node in this state if that node was in an active cluster, but is no longer, and is not halted.

•Reforming. A node is in this state when the cluster is re-forming. The node is currently running the protocols which ensure that all nodes agree to the new membership of an active cluster. If agreement is reached, the status database is updated to reflect the new cluster membership.

•Running. A node in this state has completed all required activity for the last re-formation and is operating normally.

•Halted. A node never sees itself in this state. Other nodes will see it in this state after the node has gracefully left the active cluster, for instance with a cmhaltnode command.

•Unknown. A node never sees itself in this state. Other nodes assign a node this state if it has never been an active cluster member.

Package Status and State

The status of a package can be one of the following:

•Up. The package control script is active.

•Down. The package control script is not active.

•Unknown.

A system multi-node package is up when it is running on all the active cluster nodes. A multi-node package is up if it is running on any of its configured nodes.

The state of the package can be one of the following:

•Starting. The start instructions in the control script are being run.

•Running. Services are active and being monitored.

•Halting. The halt instructions in the control script are being run.

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