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mysqld服务启动失败, Failed to restart mysqld.service: Unit not found.

-bash-4.2# service mysqld restart
Redirecting to /bin/systemctl restart mysqld.service
Failed to restart mysqld.service: Unit not found.

 

并不存在 mysqld 的服务,

-bash-4.2# -bash-4.2# chkconfig -list-list: unknown option-bash-4.2# chkconfig --listNote: This output shows SysV services only and does not include native      systemd services. SysV configuration data might be overridden by native      systemd configuration.      If you want to list systemd services use systemctl list-unit-files.      To see services enabled on particular target use      systemctl list-dependencies [target].aegis           0:off   1:off   2:on    3:on    4:on    5:on    6:offagentwatch      0:off   1:off   2:on    3:on    4:on    5:on    6:offiprdump         0:off   1:off   2:on    3:on    4:on    5:on    6:offiprinit         0:off   1:off   2:on    3:on    4:on    5:on    6:offiprupdate       0:off   1:off   2:on    3:on    4:on    5:on    6:offjexec           0:off   1:on    2:on    3:on    4:on    5:on    6:offmysql.server    0:off   1:off   2:on    3:on    4:on    5:on    6:offnetconsole      0:off   1:off   2:off   3:off   4:off   5:off   6:offnetwork         0:off   1:off   2:on    3:on    4:on    5:on    6:off

 

可见,服务名不是mysqld 而是 mysql.server

 

于是: 

-bash-4.2# service mysql.server restart
Shutting down MySQL....[ OK ]
Starting MySQL.[ OK ]

mysqld服务启动失败, Failed to restart mysqld.service: Unit not found.