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Managing cluster configurations with reports

Managing cluster configurations can be done through the following reports:

• Reporting cluster basics
• Finding cluster configuration problems
• Reviewing cluster attributes
• Reviewing group attributes
• Reviewing resource attributes
• Tracking cluster IPs

Reporting cluster basics

The Cluster Inventory report shows a variety of configuration information about the selected clusters. Ideally, this report will be used in a fashion similar to a run book. Information displayed about the selected clusters includes: operating system, VCS version number, cluster IP address, cluster UUID, cluster notification list, wide area connection information, enabled feature options, and the VCS mode of the cluster. The table describes additional information about each cluster, including: systems in the cluster, nodes ID of each system, license type, processor type, operating system, and system information string.

• Objects of Interest: Clusters
• Uses Historical Data: No
• Uses Maintenance Windows: No

Finding cluster configuration problems

The Configuration Analysis report analyzes configuration aspects of the selected cluster and its groups, and reports on a number of possible configuration problems. For each configured cluster and group within the cluster, the report displays the state of the object at the time the report is run.

• Objects of Interest: Clusters
• Uses Historical Data: No
• Uses Maintenance Windows: No

The top of the report is a summary chart displaying all the configured clusters and groups along with the number of errors and warnings generated.

The report performs a series of tests on the configuration. Each test results in one of four possible verdicts:

• PASSED - The configuration is within the realm of normalcy.
• FAILED - There is something wrong with the configuration.
• WARNING - An aspect of the configuration is suspect, but not necessarily wrong.
• UNKNOWN - Configuration information pertaining to the test is unavailable.

Underneath the results for each test, the report will, when possible, display a chart of information detailing results of subtests used to reach the verdict of the test.

Tests performed on a cluster:

• Ensures that OS versions are consistent across nodes, local and remote.
• Ensures that ClusterService group has its Tag attribute set to CSG if it contains the connector resource (wac).
• Ensures that notifier and VRTSWebApp resources (if part of ClusterService) are set to non-critical, and have OnlineRetryLimit set to some non-zero value.
• Ensures that there are at least two private heartbeats configured and operational.
• Ensures that heartbeats are defined for each remote cluster.

Tests performed on a group:

• Ensures that resources that are Persistent or OnOnly do not have child resources.
• Validates resource dependencies (IP above NIC, etc.).
• Verifies the system list. Checks that each system in the system list exists, is online, and is not faulted. Displays the results in a chart.
• Verifies remote system list. Checks that each system in the remote system list exists, is online, and is not faulted. Displays the results in a chart.
• Verifies that auto-start is set for the group. If auto-start is not set, this is not a failure but is a warning.
• Verifies that the group is not frozen on any of the nodes.
• Verifies that the MAC address is consistent with the NIC resource.
• Verifies that MountV resources refer to an actual VMDg resource.
• Verifies that a global cluster group ClusterList is a subset of the cluster's ClusterList.
• Verifies that a global cluster group has the same name as its remote counterpart.
• Verifies that only one group in a global cluster (local or remote) has the "authority" attribute set. (Both groups with authority is evidence of a takeover.)
• Verifies that systems in a group's remote system list are configured in clusters listed in the ClusterList.

Reviewing cluster attributes

The Cluster Attribute report requires the user to select clusters and cluster attributes on which to report. The report output displays the current value of these attributes for each of the selected clusters. Each cluster is represented as a single row in the resulting table of attributes, which includes the cluster name and the values of the selected attributes. Clusters have attributes such as configuration, major and minor versions, and VCS mode.

• Objects of Interest: Clusters
• Uses Historical Data: No
• Uses Maintenance Windows: No

Reviewing group attributes

The Group Attribute report requires the user to select groups and group attributes on which to report. The report output displays the current value of these attributes for each of the selected groups. Each group is represented as a single row in the resulting table of attributes, which includes the group name and the values of the selected attributes. Groups have attributes such as system list, state, whether or not the systems in the group are enabled, and number of retries.

• Objects of Interest: Groups
• Uses Historical Data: No
• Uses Maintenance Windows: No

Reviewing resource attributes

The Resource Attribute report requires the user to select resources and resource attributes on which to report. The report output displays the current value of these attributes for each of the selected resources. Each resource is represented as a single row in the resulting table of attributes, which includes the resource name and the values of the selected attributes. Resources have attributes such as state, critical/non-critical, last resource online, and resource flags.

• Objects of Interest: Resources
• Uses Historical Data: No
• Uses Maintenance Windows: No

Tracking cluster IPs

The Virtual IP Usage report displays all virtual IP addresses that are in use for resources in the selected clusters. For each IP address, a table provides the associated group, resource, node, subnet mask, and MAC address.

• Objects of Interest: Cluster
• Uses Historical Data: No
• Uses Maintenance Windows: No