Painless galera cluster recovery by automatic host selection and bootstrapping.

• Specify configuration file which containing wsrep_cluster_address directive in etc/systemd/system/mysql.service.d/override.conf:2 as parameter to /usr/local/bin/recover_galera_cluster
• Edit username used for ssh in usr/local/bin/recover_galera_cluster:4
• Copy all file and it's folder structure to root directory

  cp -r {etc,usr} /