5d533fba6a
LP Bug #1918953 [0] was resolved on the mysql-innodb-cluster side using coordinated delayed action. Since then we have seen a similar issue in CI [1] after the pause and resume test. Mysql-router hangs with: 2021-04-21 20:42:05 metadata_cache WARNING [7f3f968d5700] Instance '192.168.254.18:3306' [72b4ac2c-a2dd-11eb-82a5-fa163e5a4b7e] of replicaset 'default' is unreachable. Increasing metadata cache refresh frequency. This cannot be fixed from the cluster side. I will be looking into solutions on the mysql-rotuer side. But in the meantime, to unblock the mysql-innodb-cluster gate this change restarts blocked MySQL routers. [0] https://bugs.launchpad.net/charm-mysql-router/+bug/1918953 [1] https://openstack-ci-reports.ubuntu.com/artifacts/test_charm_pipeline_func_full/openstack/charm-mysql-innodb-cluster/786514/3/8479/consoleText.test_charm_func_full_11494.txt