Subject: Unit mysql@bootstrap.service has failed -- Defined-By: systemd
Apr 21 19:15:54 pxc1 systemd[1]: mysql@bootstrap.service: main process exited, code=exited, status=1/FAILURE
Apr 21 19:15:57 pxc1 mysql-systemd[8777]: /usr/bin/mysql-systemd: line 140: kill: (8776) - No such process
Apr 21 19:15:57 pxc1 mysql-systemd[8777]: ERROR! mysqld_safe with PID 8776 has already exited: FAILURE
Apr 21 19:15:57 pxc1 systemd[1]: mysql@bootstrap.service: control process exited, code=exited status=1
Apr 21 19:15:57 pxc1 mysql-systemd[9267]: WARNING: mysql pid file /var/run/mysqld/mysqld.pid empty or not readable
Apr 21 19:15:57 pxc1 mysql-systemd[9267]: ERROR! mysql already dead
Apr 21 19:15:57 pxc1 systemd[1]: mysql@bootstrap.service: control process exited, code=exited status=2
Apr 21 19:15:57 pxc1 mysql-systemd[9296]: WARNING: mysql pid file /var/run/mysqld/mysqld.pid empty or not readable
Apr 21 19:15:57 pxc1 mysql-systemd[9296]: WARNING: mysql may be already dead
Apr 21 19:15:57 pxc1 systemd[1]: Failed to start Percona XtraDB Cluster with config /etc/sysconfig/mysql.bootstrap.
-- Subject: Unit mysql@bootstrap.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysql@bootstrap.service has failed.
--
-- The result is failed.
Apr 21 19:15:57 pxc1 systemd[1]: Unit mysql@bootstrap.service entered failed state.
Apr 21 19:15:57 pxc1 systemd[1]: mysql@bootstrap.service failed.
Apr 21 19:15:57 pxc1 polkitd[6586]: Unregistered Authentication Agent for unix-process:8728:76373 (system bus name :1.67, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)
解决办法：
SRE实战 互联网时代守护先锋，助力企业售后服务体系运筹帷幄！一键直达领取阿里云限量特价优惠。修改最新节点的文件参数
#vi /var/lib/mysql/grastate.dat
把safe_to_bootstrap: 0 改成1后
开启服务：systemctl start mysql@bootstrap.service
