服务器在重启之后mariadb无法启动，查看报错日志如下：
2020-03-30 22:41:13 0 [Note] InnoDB: Completed initialization of buffer pool
2020-03-30 22:41:13 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2020-03-30 22:41:13 0 [ERROR] InnoDB: Missing MLOG_CHECKPOINT at 62156679 between the checkpoint 62156351 and the end 62156288.
2020-03-30 22:41:13 0 [ERROR] InnoDB: Plugin initialization aborted with error Generic error
2020-03-30 22:41:14 0 [Note] InnoDB: Starting shutdown…
2020-03-30 22:41:14 0 [ERROR] Plugin ‘InnoDB’ init function returned error.
2020-03-30 22:41:14 0 [ERROR] Plugin ‘InnoDB’ registration as a STORAGE ENGINE failed.
2020-03-30 22:41:14 0 [Note] Plugin ‘FEEDBACK’ is disabled.
2020-03-30 22:41:14 0 [ERROR] Unknown/unsupported storage engine: InnoDB
2020-03-30 22:41:14 0 [ERROR] Aborting
2020-03-30 22:41:48 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2020-03-30 22:41:48 0 [Note] InnoDB: Uses event mutexes
2020-03-30 22:41:48 0 [Note] InnoDB: Compressed tables use zlib 1.2.7
2020-03-30 22:41:48 0 [Note] InnoDB: Number of pools: 1
2020-03-30 22:41:48 0 [Note] InnoDB: Using SSE2 crc32 instructions
2020-03-30 22:41:48 0 [Note] mysqld: O_TMPFILE is not supported on /tmp (disabling future attempts)
2020-03-30 22:41:48 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2020-03-30 22:41:48 0 [Note] InnoDB: Completed initialization of buffer pool
2020-03-30 22:41:49 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2020-03-30 22:41:49 0 [ERROR] InnoDB: Missing MLOG_CHECKPOINT at 62156679 between the checkpoint 62156351 and the end 62156288.
2020-03-30 22:41:49 0 [ERROR] InnoDB: Plugin initialization aborted with error Generic error
2020-03-30 22:41:49 0 [Note] InnoDB: Starting shutdown…
2020-03-30 22:41:49 0 [ERROR] Plugin ‘InnoDB’ init function returned error.
2020-03-30 22:41:49 0 [ERROR] Plugin ‘InnoDB’ registration as a STORAGE ENGINE failed.
2020-03-30 22:41:49 0 [Note] Plugin ‘FEEDBACK’ is disabled.
2020-03-30 22:41:49 0 [ERROR] Unknown/unsupported storage engine: InnoDB
2020-03-30 22:41:49 0 [ERROR] Aborting
解决办法是，去掉data目录下的ib_logfile0 ib_logfile1 这两个文件，mv rm都行 然后启动mariadb就行
mv ib_logfile0 ib_logfile0.bak mv ib_logfile1 ib_logfile1.bak
systemctl start mariadb
