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PCS two nodes resource start at the same time

pk flag

I am configuring a two nodes cluster Active/passive where the resources of one node is up at a time, so I added two resources IP address and service, The problem is that after configuring the cluster I see the service is up on one node and down on the other which is desired and normal. However, after a random period I see that the service becomes up on the other node which is undesirable behavior and is causing issues in the environment, I created the same cluster in different locations and it is working properly on many of them but I suffer this problem in 3 locations only?

Can anyone knows the cause of this issue ? knowing that I am configuring on centos 7

Thanks in advance

mangohost

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