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Linux » Books » Administrative »
Linux FailSafe Administrator's Guide
(document number: 007-4322-002 / published: 2001-02-28)
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After you have configured your Linux FailSafe system
and run diagnostic tests on its components, you can activate the highly available
services by starting Linux FailSafe. You can start Linux FailSafe on a systemwide
basis, on all of the nodes in a cluster, or on a specified node only. | Caution | When you start HA services on a subset of the nodes, you should make
sure that resource groups are not running in other nodes in the cluster. For
example, if a cluster contains nodes N1, N2, and N3 and HA services are started
on nodes N1 and N2 but not on node N3, you should make sure that resource
groups are not running on node N3. Linux FailSafe will not perform exclusivity
checks on nodes where HA services are not started. |
When you start HA services, the following actions are performed: All nodes in the cluster in the CDB are enabled Linux FailSafe returns success to the user after modifying
the CDB The local CMOND gets notification from cdbd The local CMOND starts all HA processes (CMSD, GCD, SRMD,
FSD) and IFD. CMOND sets failsafe2 chkconfig flag to on.
To start Linux FailSafe services using the Cluster Manager GUI, perform
the following steps: On the left side of the display, click on the “Nodes
& Cluster” category. On the right side of the display click on the “Start
FailSafe HA Services” task link to launch the task. Enter the selected inputs. Click on “OK” at the bottom of the screen to complete
the task.
To activate Linux FailSafe in a cluster, use the following command: cmgr> start ha_services [on node A] [for cluster B] |
Linux FailSafe Administrator's Guide
(document number: 007-4322-002 / published: 2001-02-28)
table of contents | additional info | download
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