情况:
今早发现,昨天下午安装的4台mysql服务器,突然出现,由于在shell窗口
(root@localhost:mysql.sock) [(none)]> 190102 18:12:16 mysqld_safe mysqld from pid file /home/data/mysqldata/3306/data/mysql3.pid ended
什么情况,mysql意外关闭,4个shell窗口都出现了同样的错误,还是有点紧张,于是赶紧找error日志
[mysql@mysql3 scripts]$ tail -f -n 200 /home/data/mysqldata/3306/log/mysql-error.log
2019-01-02 17:24:21 3654 [Note] /usr/sbin/mysqld: ready forconnections.
Version:'5.6.15-log' socket: '/home/data/mysqldata/3306/mysql.sock' port: 3306 MySQL Community Server -(GPL)2019-01-02 17:24:21 3654 [Note] Event Scheduler: scheduler thread started with id 1
2019-01-02 17:27:46 3654 [Warning] 'proxies_priv' entry '@ root@mysql1' ignored in --skip-name-resolve mode.
2019-01-02 18:12:05 3654 [Note] /usr/sbin/mysqld: Normal shutdown
2019-01-02 18:12:05 3654 [Note] Giving 3 client threads a chance todie gracefully2019-01-02 18:12:05 3654 [Note] Event Scheduler: Killing the scheduler thread, thread id 1
2019-01-02 18:12:05 3654 [Note] Event Scheduler: Waiting for the scheduler thread toreply2019-01-02 18:12:05 3654 [Note]Event Scheduler: Stopped2019-01-02 18:12:05 3654 [Note] Event Scheduler: Purging the queue. 0events2019-01-02 18:12:05 3654 [Note]Shutting down slave threads2019-01-02 18:12:15 3654 [Note] Forcefully disconnecting 1remaining clients2019-01-02 18:12:15 3654 [Warning] /usr/sbin/mysqld: Forcing close of thread 6 user: 'root'
2019-01-02 18:12:15 3654 [Note] Binlog end
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'partition'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'BLACKHOLE'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_METRICS'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_CMPMEM'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_CMP'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_LOCKS'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'INNODB_TRX'
2019-01-02 18:12:15 3654 [Note] Shutting down plugin 'InnoDB'
2019-01-02 18:12:15 3654 [Note]InnoDB: FTS optimize thread exiting.2019-01-02 18:12:15 3654 [Note] InnoDB: Starting shutdown...2019-01-02 18:12:16 3654 [Note] InnoDB: Shutdown completed; log sequence number 7120303
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'ARCHIVE'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'MRG_MYISAM'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'MyISAM'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'MEMORY'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'CSV'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'sha256_password'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'mysql_old_password'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'mysql_native_password'
2019-01-02 18:12:16 3654 [Note] Shutting down plugin 'binlog'
2019-01-02 18:12:16 3654 [Note] /usr/sbin/mysqld: Shutdowncomplete190102 18:12:16 mysqld_safe mysqld from pid file /home/data/mysqldata/3306/data/mysql3.pid ended190102 18:13:32 mysqld_safe Starting mysqld daemon with databases from /home/data/mysqldata/3306/data2019-01-02 18:13:34 4770 [Note] Plugin 'FEDERATED' is disabled.
如上面的日志标记所示,4台都是一样,很奇怪为什么会发现这样的问题
系统:cpu 4核,内存18g,磁盘hdd 200g
[root@mysql3 ~]# cat /etc/redhat-release
Kylin Linux release 3.3.1707 (Core)
mysql version:
Server version: 5.6.15-log MySQL Community Server - (GPL)
刚安装好的机器,不应该出现这样的问题,但是除了我,又没有谁来搞这个mysql,看了 linux的history
[root@mysql3 ~]#export HISTTIMEFORMAT='%F %T '
105 2019-01-02 15:55:27whereis mysql106 2019-01-02 15:55:31which mysql107 2019-01-02 15:57:08 vim /home/data/mysqldata/3306/my.cnf108 2019-01-02 16:00:39 chown -R mysql:mysql /home/data/mysqldata/
109 2019-01-02 16:00:43 su -mysql110 2019-01-03 09:00:19history111 2019-01-03 09:00:44 su -mysql112 2019-01-03 10:06:49 cd /home/so113 2019-01-03 10:06:54 cd /home/
没有相应时间的history
[root@mysql1 3306]#su - mysql
[mysql@mysql1 ~]$history66 2019-01-02 17:41:10 cd ../scripts/
67 2019-01-02 17:41:11ll68 2019-01-02 17:44:00 mysql -uroot -p -S /home/data/mysqldata/3306/mysql.sock69 2019-01-03 08:38:13ll70 2019-01-03 08:38:15cd ..71 2019-01-03 08:38:17 cd 3306/log/
找不到问题,这时候开始网上找找,发现有一些人遇到这个问题
2019-01-02 18:09:56 3549 [Note] /usr/sbin/mysqld: Normal shutdown
但是回答的大部分都是,找找是否有history |grep mysqladmin 或者service mysqld stop等命令,看看是否手动或者其他的关闭了mysql
因为从error上看,是正常的关闭mysql服务
查看slow log也没有什么发现
还看到有一个帖子
有提到bug的帖子
由于还是找不到原因,寻思许久,不得解
这是问了一下开发同学 是否有重启过数据库,一问,才发现,他们悄悄的修改了my.cnf,然后同时重启了这4台机器。。。。。
哎,搞了半天,。。被开发的重启了,
这里警示了一个重要的问题,数据库就让dba团队来管控,开发只需要提出需求就好,而不是自己想当然的进行修改,,
按理说我们已经有 开发规范,管理规范,这种还是控制不住,毕竟。。。