Comment 2 for bug 1909385

Hello Alex, Thanks for your response. We have successfully resolved this issue, for some reason percona-cluster was rejecting the relation with the warning:

2021-01-01 14:03:10 DEBUG juju-log shared-db:158: Percona cluster not yet bootstrapped - deferring shared-db rel until bootstrapped

we had to bootstrap percona-cluster again for it to accept the relation. It should be noted that we only had this issue when running percona-cluster in a cluster of three nodes.