[kolla] How to recover MariaDB if there's a controller failed to boot?

Hi everyone, We met an issue few days ago. When we launch Openstack cluster, we found that there's a controller couldn't boot up caused by hardware failure, And MariaDB lost sync after left controllers booted into system. In this case, Can I just mark down the failed controller hostname in inventory file and do mariadb_recovery? Any risk after do this after failure one back online? Many thanks, Eddie.