折腾：
【已解决】lnmp中修改了mysql的配置文件/etc/my.cnf后重启失败：ERROR The server quit without updating PID file
期间，去找错误日志：
[root@crifan ~]# ls /usr/local/mysql/var/crifan.com.err /usr/local/mysql/var/crifan.com.err [root@crifan ~]# ls /usr/local/mysql/var/crifan.com.err -lha -rw-rw—- 1 mysql mysql 12K Sep 9 12:05 /usr/local/mysql/var/crifan.com.err [root@crifan ~]# ^C [root@crifan ~]# cat /usr/local/mysql/var/crifan.com.err 170905 9:41:02 [Note] Plugin ‘FEDERATED’ is disabled. 170905 9:41:02 InnoDB: The InnoDB memory heap is disabled 170905 9:41:02 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170905 9:41:02 InnoDB: Compressed tables use zlib 1.2.7 170905 9:41:02 InnoDB: Initializing buffer pool, size = 256.0M 170905 9:41:02 InnoDB: Completed initialization of buffer pool InnoDB: The first specified data file /usr/local/mysql/var/ibdata1 did not exist: InnoDB: a new database to be created! 170905 9:41:02 InnoDB: Setting file /usr/local/mysql/var/ibdata1 size to 10 MB InnoDB: Database physically writes the file full: wait… 170905 9:41:02 InnoDB: Log file /usr/local/mysql/var/ib_logfile0 did not exist: new to be created InnoDB: Setting log file /usr/local/mysql/var/ib_logfile0 size to 64 MB InnoDB: Database physically writes the file full: wait… 170905 9:41:03 InnoDB: Log file /usr/local/mysql/var/ib_logfile1 did not exist: new to be created InnoDB: Setting log file /usr/local/mysql/var/ib_logfile1 size to 64 MB InnoDB: Database physically writes the file full: wait… InnoDB: Doublewrite buffer not found: creating new InnoDB: Doublewrite buffer created InnoDB: 127 rollback segment(s) active. InnoDB: Creating foreign key constraint system tables InnoDB: Foreign key constraint system tables created 170905 9:41:03 InnoDB: Waiting for the background threads to start 170905 9:41:04 InnoDB: 5.5.56 started; log sequence number 0 170905 9:41:04 [Note] Server hostname (bind-address): ‘0.0.0.0’; port: 3306 170905 9:41:04 [Note] – ‘0.0.0.0’ resolves to ‘0.0.0.0’; 170905 9:41:04 [Note] Server socket created on IP: ‘0.0.0.0’. 170905 9:41:04 [Note] Event Scheduler: Loaded 0 events 170905 9:41:04 [Note] /usr/local/mysql/bin/mysqld: ready for connections. Version: ‘5.5.56-log’ socket: ‘/tmp/mysql.sock’ port: 3306 Source distribution 170905 9:41:04 [Note] /usr/local/mysql/bin/mysqld: Normal shutdown 170905 9:41:04 [Note] Event Scheduler: Purging the queue. 0 events 170905 9:41:04 InnoDB: Starting shutdown… 170905 9:41:04 InnoDB: Shutdown completed; log sequence number 1595675 170905 9:41:04 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 170905 9:41:05 [Note] Plugin ‘FEDERATED’ is disabled. 170905 9:41:05 InnoDB: The InnoDB memory heap is disabled 170905 9:41:05 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170905 9:41:05 InnoDB: Compressed tables use zlib 1.2.7 170905 9:41:05 InnoDB: Initializing buffer pool, size = 256.0M 170905 9:41:05 InnoDB: Completed initialization of buffer pool 170905 9:41:05 InnoDB: highest supported file format is Barracuda. 170905 9:41:05 InnoDB: Waiting for the background threads to start 170905 9:41:06 InnoDB: 5.5.56 started; log sequence number 1595675 170905 9:41:06 [Note] Server hostname (bind-address): ‘0.0.0.0’; port: 3306 170905 9:41:06 [Note] – ‘0.0.0.0’ resolves to ‘0.0.0.0’; 170905 9:41:06 [Note] Server socket created on IP: ‘0.0.0.0’. 170905 9:41:06 [Note] Event Scheduler: Loaded 0 events 170905 9:41:06 [Note] /usr/local/mysql/bin/mysqld: ready for connections. Version: ‘5.5.56-log’ socket: ‘/tmp/mysql.sock’ port: 3306 Source distribution 170905 9:41:07 [Note] /usr/local/mysql/bin/mysqld: Normal shutdown 170905 9:41:07 [Note] Event Scheduler: Purging the queue. 0 events 170905 9:41:07 InnoDB: Starting shutdown… 170905 9:41:08 InnoDB: Shutdown completed; log sequence number 1595685 170905 9:41:08 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 170905 9:41:09 [Note] Plugin ‘FEDERATED’ is disabled. 170905 9:41:09 InnoDB: The InnoDB memory heap is disabled 170905 9:41:09 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170905 9:41:09 InnoDB: Compressed tables use zlib 1.2.7 170905 9:41:09 InnoDB: Initializing buffer pool, size = 256.0M 170905 9:41:09 InnoDB: Completed initialization of buffer pool 170905 9:41:09 InnoDB: highest supported file format is Barracuda. 170905 9:41:10 InnoDB: Waiting for the background threads to start 170905 9:41:11 InnoDB: 5.5.56 started; log sequence number 1595685 170905 9:41:11 [Note] Server hostname (bind-address): ‘0.0.0.0’; port: 3306 170905 9:41:11 [Note] – ‘0.0.0.0’ resolves to ‘0.0.0.0’; 170905 9:41:11 [Note] Server socket created on IP: ‘0.0.0.0’. 170905 9:41:11 [Note] Event Scheduler: Loaded 0 events 170905 9:41:11 [Note] /usr/local/mysql/bin/mysqld: ready for connections. Version: ‘5.5.56-log’ socket: ‘/tmp/mysql.sock’ port: 3306 Source distribution 170905 9:41:11 [Note] /usr/local/mysql/bin/mysqld: Normal shutdown 170905 9:41:11 [Note] Event Scheduler: Purging the queue. 0 events 170905 9:41:11 InnoDB: Starting shutdown… 170905 9:41:11 InnoDB: Shutdown completed; log sequence number 1595685 170905 9:41:11 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 170905 9:58:00 [Note] Plugin ‘FEDERATED’ is disabled. 170905 9:58:00 InnoDB: The InnoDB memory heap is disabled 170905 9:58:00 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170905 9:58:00 InnoDB: Compressed tables use zlib 1.2.7 170905 9:58:00 InnoDB: Initializing buffer pool, size = 256.0M 170905 9:58:00 InnoDB: Completed initialization of buffer pool 170905 9:58:00 InnoDB: highest supported file format is Barracuda. 170905 9:58:00 InnoDB: Waiting for the background threads to start 170905 9:58:01 InnoDB: 5.5.56 started; log sequence number 1595685 170905 9:58:01 [Note] Server hostname (bind-address): ‘0.0.0.0’; port: 3306 170905 9:58:01 [Note] – ‘0.0.0.0’ resolves to ‘0.0.0.0’; 170905 9:58:01 [Note] Server socket created on IP: ‘0.0.0.0’. 170905 9:58:01 [Note] Event Scheduler: Loaded 0 events 170905 9:58:01 [Note] /usr/local/mysql/bin/mysqld: ready for connections. Version: ‘5.5.56-log’ socket: ‘/tmp/mysql.sock’ port: 3306 Source distribution 170905 20:46:55 [Note] /usr/local/mysql/bin/mysqld: Normal shutdown 170905 20:46:55 [Note] Event Scheduler: Purging the queue. 0 events 170905 20:46:55 InnoDB: Starting shutdown… 170905 20:46:57 InnoDB: Shutdown completed; log sequence number 1607412 170905 20:46:57 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 170905 20:46:59 [Note] Plugin ‘FEDERATED’ is disabled. 170905 20:46:59 InnoDB: The InnoDB memory heap is disabled 170905 20:46:59 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170905 20:46:59 InnoDB: Compressed tables use zlib 1.2.7 170905 20:46:59 InnoDB: Initializing buffer pool, size = 256.0M 170905 20:46:59 InnoDB: Completed initialization of buffer pool 170905 20:46:59 InnoDB: highest supported file format is Barracuda. 170905 20:46:59 InnoDB: Waiting for the background threads to start 170905 20:47:00 InnoDB: 5.5.56 started; log sequence number 1607412 170905 20:47:00 [Note] Server hostname (bind-address): ‘0.0.0.0’; port: 3306 170905 20:47:00 [Note] – ‘0.0.0.0’ resolves to ‘0.0.0.0’; 170905 20:47:00 [Note] Server socket created on IP: ‘0.0.0.0’. 170905 20:47:00 [Note] Event Scheduler: Loaded 0 events 170905 20:47:00 [Note] /usr/local/mysql/bin/mysqld: ready for connections. Version: ‘5.5.56-log’ socket: ‘/tmp/mysql.sock’ port: 3306 Source distribution 170906 11:48:19 [Note] /usr/local/mysql/bin/mysqld: Normal shutdown 170906 11:48:19 [Note] Event Scheduler: Purging the queue. 0 events 170906 11:48:19 InnoDB: Starting shutdown… 170906 11:48:20 InnoDB: Shutdown completed; log sequence number 1607422 170906 11:48:20 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 170906 11:48:22 [Note] Plugin ‘FEDERATED’ is disabled. 170906 11:48:22 InnoDB: The InnoDB memory heap is disabled 170906 11:48:22 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170906 11:48:22 InnoDB: Compressed tables use zlib 1.2.7 170906 11:48:23 InnoDB: Initializing buffer pool, size = 256.0M 170906 11:48:23 InnoDB: Completed initialization of buffer pool 170906 11:48:23 InnoDB: highest supported file format is Barracuda. 170906 11:48:23 InnoDB: Waiting for the background threads to start 170906 11:48:24 InnoDB: 5.5.56 started; log sequence number 1607422 170906 11:48:24 [Note] Server hostname (bind-address): ‘0.0.0.0’; port: 3306 170906 11:48:24 [Note] – ‘0.0.0.0’ resolves to ‘0.0.0.0’; 170906 11:48:24 [Note] Server socket created on IP: ‘0.0.0.0’. 170906 11:48:24 [Note] Event Scheduler: Loaded 0 events 170906 11:48:24 [Note] /usr/local/mysql/bin/mysqld: ready for connections. Version: ‘5.5.56-log’ socket: ‘/tmp/mysql.sock’ port: 3306 Source distribution 170907 17:47:36 [Note] /usr/local/mysql/bin/mysqld: Normal shutdown 170907 17:47:36 [Note] Event Scheduler: Purging the queue. 0 events 170907 17:47:36 InnoDB: Starting shutdown… 170907 17:47:38 InnoDB: Shutdown completed; log sequence number 1607432 170907 17:47:38 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 170907 17:47:40 [Note] Plugin ‘FEDERATED’ is disabled. 170907 17:47:40 InnoDB: The InnoDB memory heap is disabled 170907 17:47:40 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170907 17:47:40 InnoDB: Compressed tables use zlib 1.2.7 170907 17:47:40 InnoDB: Initializing buffer pool, size = 256.0M 170907 17:47:40 InnoDB: Completed initialization of buffer pool 170907 17:47:40 InnoDB: highest supported file format is Barracuda. 170907 17:47:40 InnoDB: Waiting for the background threads to start 170907 17:47:41 InnoDB: 5.5.56 started; log sequence number 1607432 170907 17:47:41 [Note] Server hostname (bind-address): ‘0.0.0.0’; port: 3306 170907 17:47:41 [Note] – ‘0.0.0.0’ resolves to ‘0.0.0.0’; 170907 17:47:41 [Note] Server socket created on IP: ‘0.0.0.0’. 170907 17:47:41 [Note] Event Scheduler: Loaded 0 events 170907 17:47:41 [Note] /usr/local/mysql/bin/mysqld: ready for connections. Version: ‘5.5.56-log’ socket: ‘/tmp/mysql.sock’ port: 3306 Source distribution 170909 12:05:25 [Note] /usr/local/mysql/bin/mysqld: Normal shutdown 170909 12:05:25 [Note] Event Scheduler: Purging the queue. 0 events 170909 12:05:27 InnoDB: Starting shutdown… 170909 12:05:29 InnoDB: Shutdown completed; log sequence number 1607452 170909 12:05:29 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 170909 12:05:31 [Note] Plugin ‘FEDERATED’ is disabled. 170909 12:05:31 InnoDB: The InnoDB memory heap is disabled 170909 12:05:31 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170909 12:05:31 InnoDB: Compressed tables use zlib 1.2.7 170909 12:05:31 InnoDB: Initializing buffer pool, size = 256.0M 170909 12:05:31 InnoDB: Completed initialization of buffer pool 170909 12:05:31 InnoDB: highest supported file format is Barracuda. 170909 12:05:31 InnoDB: Waiting for the background threads to start 170909 12:05:32 InnoDB: 5.5.56 started; log sequence number 1607452 170909 12:05:32 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable ‘explicit_defaults_for_timestamp=true’ 170909 12:05:32 [ERROR] Aborting 170909 12:05:32 InnoDB: Starting shutdown… 170909 12:05:32 InnoDB: Shutdown completed; log sequence number 1607452 170909 12:05:32 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete 170909 12:05:54 [Note] Plugin ‘FEDERATED’ is disabled. 170909 12:05:54 InnoDB: The InnoDB memory heap is disabled 170909 12:05:54 InnoDB: Mutexes and rw_locks use GCC atomic builtins 170909 12:05:54 InnoDB: Compressed tables use zlib 1.2.7 170909 12:05:54 InnoDB: Initializing buffer pool, size = 256.0M 170909 12:05:54 InnoDB: Completed initialization of buffer pool 170909 12:05:54 InnoDB: highest supported file format is Barracuda. 170909 12:05:54 InnoDB: Waiting for the background threads to start 170909 12:05:55 InnoDB: 5.5.56 started; log sequence number 1607452 170909 12:05:55 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable ‘explicit_defaults_for_timestamp=true’ 170909 12:05:55 [ERROR] Aborting 170909 12:05:55 InnoDB: Starting shutdown… 170909 12:05:55 InnoDB: Shutdown completed; log sequence number 1607452 170909 12:05:55 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete [root@crifan ~]# |
看到错误原因了：
170909 12:05:55 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable ‘explicit_defaults_for_timestamp=true’
所以去搜索这个：
mysqld: unknown variable ‘explicit_defaults_for_timestamp=true’
其中：
这个参数是之前fzhost中的mysql配置，之前mysql记得址5.0.1的版本
而我此处linode中的mysql是5.5.56了。
所以估计是废弃的参数了。
Mysql启动失败 MYSQL:The server quit without updating PID file – Youn丶 – 博客园
MySQL :: Re: TIMESTAMP with implicit DEFAULT value is deprecated
mysql – How to enable explicit_defaults_for_timestamp? – Stack Overflow
“
explicit_defaults_for_timestamp
Introduced | 5.6.6 | ||
Deprecated | 5.6.6 | ||
This system variable determines whether the server enables certain nonstandard behaviors for default values and NULL-value handling in TIMESTAMP columns. By default, explicit_defaults_for_timestamp is disabled, which enables the nonstandard behaviors.
”
不管了：
5.6.6中，引入了explicit_defaults_for_timestamp，但是同时新版中就又废除了：
explicit_defaults_for_timestamp
看起来，感觉这个参数也没啥太大价值，所以直接去掉，就可以了。
【总结】
vi /etc/my.cnf
把之前加入的：
explicit_defaults_for_timestamp = true
中的去掉，就可以了。
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