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Checkpoint: Long Delay When Logging In Via SSH or Console

How to mitigate the issue where this a long delay when logging in via SSH or console. When an SSH session is initiated to a linux box, the SSH server tries to perform a lookup on the client’s IP; in certain situations this is not going to be possible, e.g.:…

Checkpoint: Best Practice Kernel Parameters for ClusterXL Stability

This article details how to configure the best practice kernel parameters to ensure ClusterXL stability. It is recommended to set ALL of those values on your cluster – also see sk92723 on Cluster flapping prevention. Make sure the changes to the kernel parameters are performed on both members! To test…