[mehran@mehran-pc ~]$ journalctl -xe
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546039Z 0 [Warning] Failed to open optimizer cost constant tables
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546146Z 0 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546189Z 0 [ERROR] Aborting
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546216Z 0 [Note] Binlog end
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546242Z 0 [Note] Shutting down plugin 'ngram'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546246Z 0 [Note] Shutting down plugin 'partition'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546249Z 0 [Note] Shutting down plugin 'BLACKHOLE'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546253Z 0 [Note] Shutting down plugin 'ARCHIVE'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546255Z 0 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546324Z 0 [Note] Shutting down plugin 'MRG_MYISAM'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546328Z 0 [Note] Shutting down plugin 'MyISAM'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546338Z 0 [Note] Shutting down plugin 'INNODB_SYS_VIRTUAL'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546341Z 0 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546344Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546347Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546350Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
May 07 01:29:03 mehran-pc mysqld[12139]: 2018-05-06T20:59:03.546352Z 0 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560197Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560201Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560205Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560209Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560212Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560216Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560220Z 0 [Note] Shutting down plugin 'INNODB_CMP_RESET'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560223Z 0 [Note] Shutting down plugin 'INNODB_CMP'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560227Z 0 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560231Z 0 [Note] Shutting down plugin 'INNODB_LOCKS'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560234Z 0 [Note] Shutting down plugin 'INNODB_TRX'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560238Z 0 [Note] Shutting down plugin 'InnoDB'
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560435Z 0 [Note] InnoDB: FTS optimize thread exiting.
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.560558Z 0 [Note] InnoDB: Starting shutdown...
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.660765Z 0 [Note] InnoDB: Dumping buffer pool(s) to /var/lib/mysql/ib_buffer_pool
May 07 01:36:13 mehran-pc mysqld[21783]: 2018-05-06T21:06:13.661134Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 180507  1:36:13
May 07 01:36:15 mehran-pc mysqld[21783]: 2018-05-06T21:06:15.183094Z 0 [Note] InnoDB: Shutdown completed; log sequence number 1210452
May 07 01:36:15 mehran-pc mysqld[21783]: 2018-05-06T21:06:15.185178Z 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
May 07 01:36:15 mehran-pc mysqld[21783]: 2018-05-06T21:06:15.185195Z 0 [Note] Shutting down plugin 'MEMORY'
May 07 01:36:15 mehran-pc mysqld[21783]: 2018-05-06T21:06:15.185201Z 0 [Note] Shutting down plugin 'CSV'
May 07 01:36:15 mehran-pc mysqld[21783]: 2018-05-06T21:06:15.185206Z 0 [Note] Shutting down plugin 'sha256_password'
May 07 01:36:15 mehran-pc mysqld[21783]: 2018-05-06T21:06:15.185211Z 0 [Note] Shutting down plugin 'mysql_native_password'
May 07 01:36:15 mehran-pc mysqld[21783]: 2018-05-06T21:06:15.185389Z 0 [Note] Shutting down plugin 'binlog'
May 07 01:36:15 mehran-pc mysqld[21783]: 2018-05-06T21:06:15.185469Z 0 [Note] /usr/bin/mysqld: Shutdown complete
May 07 01:36:15 mehran-pc systemd[1]: mysqld.service: Main process exited, code=exited, status=1/FAILURE