clustercheck script
Manually removing a node from the cluster By touching /var/tmp/clustercheck.disabled, an admin may force clustercheck to return 503, regardless as to the actual state of the node. This is useful when the node is being put into maintenance mode.

When I installed Percona XtraDB Cluster , clustercheck script is different than what is on github.
My question is, if I replace current clustercheck script with this enhanced one, would this script be again overwritten when new version gets installed ?
When we upgrade MySQL Percona XtraDB Cluster, would script clustercheck would be over written ?

Thanks a lot.

It looks like clustercheck script gets overwritten during yum update.