In addition to the crm command line tool and the Pacemaker GUI, the High Availability Extension also comes with the HA Web Konsole (Hawk), a Web-based user interface for management tasks. It allows you to monitor and administer your Linux cluster from non-Linux machines as well. Furthermore, it is the ideal solution in case your system only provides a minimal graphical user interface.
This chapter introduces Hawk and covers basic tasks for configuring and managing cluster resources: modifying global cluster options, creating basic and advanced types of resources (groups and clones), configuring constraints, specifying failover nodes and failback nodes, configuring resource monitoring, starting, cleaning up or removing resources, and migrating resources manually. For detailed analysis of the cluster status, Hawk generates a cluster report (hb_report). You can view the cluster history or explore potential failure scenarios with the simulator.