Error starting MySQL (Percona XtraDB Cluster) database server

Hello,
I have MYSQL DB running on cluster along with percona. 2 servers in cluster are working fine except for 3rd one which does not start with MySQL service. When I try to start MySQL service on the server I get the following error.
Mar 11 13:15:12 dbserver3 mysql[24884]: Starting MySQL (Percona XtraDB Cluster) database server: mysqldStale PID file found: /var/run/mysqld/mysqld.pid with 1800 … (warning).
Mar 11 13:15:13 dbserver3 /etc/init.d/mysql[25508]: mysql ping failed
Mar 11 13:15:13 dbserver3 mysql[24884]: Please take a look at the syslog. … failed!
Mar 11 13:15:13 dbserver3 mysql[24884]: failed!
Mar 11 13:15:13 dbserver3 systemd[1]: mysql.service: control process exited, code=exited status=1
Mar 11 13:15:13 dbserver3 systemd[1]: Failed to start LSB: Start and stop the mysql (Percona XtraDB Cluster) daemon.
Mar 11 13:15:13 dbserver3 systemd[1]: Unit mysql.service entered failed state.
Any idea what is going wrong would be great support.
Thanks
Anwar

I am experiencing the same issue with a 3 node cluster which was functioning normally. We had to reboot node 1 for a different reason and since mySQL would not start with the same ‘mysql ping failed’ any one know what this errr means and how to resolve…

● mysql.service - LSB: Start and stop the mysql (Percona XtraDB Cluster) daemon
Loaded: loaded (/etc/init.d/mysql; bad; vendor preset: enabled)
Active: failed (Result: exit-code) since Fri 2019-06-14 12:51:47 EDT; 15s ago
Docs: man:systemd-sysv-generator(8)
Process: 3990 ExecStart=/etc/init.d/mysql start (code=exited, status=1/FAILURE)
Tasks: 32
Memory: 225.1M
CPU: 161ms
CGroup: /system.slice/mysql.service
├─1201 /bin/sh /usr/bin/mysqld_safe
└─2089 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/mysql/plugin --user=mysql --log-error=PROD-DBNODE1.err --pid-file=PROD-DBNODE1.pid --wsrep_start_position=00000000-0000-0000-0

Jun 14 12:51:46 PROD-DBNODE1 mysql[3990]: mysqld: [Warning] World-writable config file ‘/etc/mysql/my.cnf’ is ignored.
Jun 14 12:51:46 PROD-DBNODE1 mysql[3990]: mysqld: [Warning] World-writable config file ‘/etc/mysql/my.cnf’ is ignored.
Jun 14 12:51:46 PROD-DBNODE1 mysql[3990]: * Starting MySQL (Percona XtraDB Cluster) database server mysqld
Jun 14 12:51:46 PROD-DBNODE1 mysql[3990]: * Stale PID file found: /var/lib/mysql/DBNODE1.pid with 2089
Jun 14 12:51:47 PROD-DBNODE1 mysql[3990]: * Please take a look at the syslog.
Jun 14 12:51:47 PROD-DBNODE1 mysql[3990]: …fail!
Jun 14 12:51:47 PROD-DBNODE1 systemd[1]: mysql.service: Control process exited, code=exited status=1
Jun 14 12:51:47 PROD-DBNODE1 systemd[1]: Failed to start LSB: Start and stop the mysql (Percona XtraDB Cluster) daemon.
Jun 14 12:51:47 PROD-DBNODE1 systemd[1]: mysql.service: Unit entered failed state.
Jun 14 12:51:47 PROD-DBNODE1 systemd[1]: mysql.service: Failed with result ‘exit-code’.