Hi, I need a way to do a manual fail-back on demand. To be clear, I don't want it to be ON/OFF; I want it to be more like "one shot". So far I found that the most reasonable way to do it - is to set "resource stickiness" to a different value, and then set it back to what it was. To do that I created a simple script with two lines:
crm configure rsc_defaults resource-stickiness=50 crm configure rsc_defaults resource-stickiness=150 There are no timeouts before setting the original value back. If I call this script, I get what I want - Pacemaker moves resources to their preferred locations, and "resource stickiness" is set back to its original value. Despite it works, I still have few concerns about this approach. Will I get the same behavior under a big load with delays on systems in cluster (which is truly possible and a normal case in my environment)? How Pacemaker treats fast change of this parameter? I am worried that if "resource stickiness" is set back to its original value to fast, then no fail-back will happen. Is it possible, or I shouldn't worry about it? Thank you, Kostia
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