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Cluster Management Tools
High Availability Extension ships with a comprehensive set of tools to assists you in
managing your cluster from the command line. This chapter introduces the tools needed
for managing the cluster configuration in the CIB and the cluster resources. Other
command line tools for managing resource agents or tools used for debugging (and
troubleshooting) your setup are covered in Chapter 15, Troubleshooting (page 133).
The following list presents several tasks related to cluster management and briefly in-
troduces the tools to use to accomplish these tasks:
Monitoring the Cluster's Status
The
crm_mon
command allows you to monitor your cluster's status and configu-
ration. Its output includes the number of nodes, uname, uuid, status, the resources
configured in your cluster, and the current status of each. The output of
crm_mon
can be displayed at the console or printed into an HTML file. When provided with
a cluster configuration file without the status section,
crm_mon
creates an overview
of nodes and resources as specified in the file. See crm_mon(8) (page 162) for a
detailed introduction to this tool's usage and command syntax.
Managing the CIB
The
cibadmin
command is the low-level administrative command for manipulat-
ing the Heartbeat CIB. It can be used to dump all or part of the CIB, update all or
part of it, modify all or part of it, delete the entire CIB, or perform miscellaneous
CIB administrative operations. See cibadmin(8) (page 142) for a detailed introduction
to this tool's usage and command syntax.
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