我的wordpress网站经常有这样的错误 Error establishing a database connection .
以前，我用 sudo chmod 755 /var/lib/mysql 以及 sudo /etc/init.d/mysql restart 去解决它。然而，这一次，他们不能再工作了； sudo /etc/init.d/mysql 返回
stop: Unknown instance:
start: Job failed to start以及 mysqld --verbose 返回
180120 3:24:48 [Warning] Using unique option prefix key_buffer instead of key_buffer_size is deprecated and will be removed in a future release. Please use the full name instead.
180120 3:24:48 [Warning] Can't create test file /var/lib/mysql/chengtie.lower-test
180120 3:24:48 [Note] mysqld (mysqld 5.5.58-0ubuntu0.14.04.1) starting as process 20724 ...
180120 3:24:48 [Warning] Can't create test file /var/lib/mysql/chengtie.lower-test
180120 3:24:48 [Warning] Can't create test file /var/lib/mysql/chengtie.lower-test
180120 3:24:48 [Warning] One can only use the --user switch if running as root
180120 3:24:48 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead.
180120 3:24:48 [Note] Plugin 'FEDERATED' is disabled.
mysqld: Can't find file: './mysql/plugin.frm' (errno: 13)
180120 3:24:48 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
180120 3:24:48 InnoDB: The InnoDB memory heap is disabled
180120 3:24:48 InnoDB: Mutexes and rw_locks use GCC atomic builtins
180120 3:24:48 InnoDB: Compressed tables use zlib 1.2.8
180120 3:24:48 InnoDB: Using Linux native AIO
180120 3:24:48 InnoDB: Initializing buffer pool, size = 128.0M
InnoDB: mmap(137363456 bytes) failed; errno 12
180120 3:24:48 InnoDB: Completed initialization of buffer pool
180120 3:24:48 InnoDB: Fatal error: cannot allocate memory for the buffer pool
180120 3:24:48 [ERROR] Plugin 'InnoDB' init function returned error.
180120 3:24:48 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
180120 3:24:48 [ERROR] Unknown/unsupported storage engine: InnoDB
180120 3:24:48 [ERROR] Aborting
180120 3:24:48 [Note] mysqld: Shutdown complete有人知道如何让我的网站回来吗？
1条答案
按热度按时间uidvcgyl1#
你的水滴没有足够的内存来启动mysql。看到错误了吗
InnoDB: mmap(137363456 bytes) failed; errno 12-mysql在尝试分配~130mb内存时失败。跑
free -m检查应用程序有多少可用内存。您可以通过两种方式解决此问题：
增大液滴的大小。这会花你更多的钱。
添加（更多）交换空间到您的水滴。这很可能会影响性能，但会为您节省资金。