Latest revision as of 07:35, 11 June 2023

Accessing cluster via web interface

Access cluster via https://<hostname-or-ip>:7630/ (Hawk) and login via appropriate user such as hacluster.

If we move a resource to / from a node then it creates a permanent location constraint for affinity / anti-affinity based on move command similar to:

location cli-prefer-grp_ASCS grp_ASCS role=Started inf: EXAPRI1

These create problem when we no longer need a particular resource on a specific machine.

Thus if you iniitally move a resource using:

crm resource migrate r0 node2

then once task is complete use:

crm resource unmigrate r0

to remove the cli-prefer constraint.

Other option is to manually edit configuration and remove the location constraint from the configuration.

Refer:

@@ Line 5: / Line 5: @@
+=Avoid moving resources without timeout=
+If we move a resource to / from a node then it creates a permanent location constraint for affinity / anti-affinity based on move command similar to:
+<pre>
+location cli-prefer-grp_ASCS grp_ASCS role=Started inf: EXAPRI1
+</pre>
+These create problem when we no longer need a particular resource on a specific machine.
+Thus if you iniitally move a resource using:
+<pre>
+crm resource migrate r0 node2
+</pre>
+then once task is complete use:
+<pre>
+crm resource unmigrate r0
+</pre>
+to remove the cli-prefer constraint.
+Other option is to manually edit configuration and remove the location constraint from the configuration.
+Refer:
+* https://unix.stackexchange.com/questions/170986/pacemaker-migrate-resource-without-adding-a-prefer-line-in-config
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