我的Ubuntu在docker中运行，我需要使用Percona，但是，mysqld无法启动。我一直试图解决这个问题2天。我不认为这是一个权限问题，但我不确定我的配置是否不正确。以下是我的Ubuntu版本，它在docker中运行。
3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3 21:30:07 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld_safe]
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
explicit_defaults_for_timestamp
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 127.0.0.1
log-error = /var/log/mysql/error.log
# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# * IMPORTANT: Additional settings that can override those from this file!
# The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/
这是mysql尝试初始化时的初始错误日志。
2014-10-17 15:43:27 53 [Note] WSREP: Read nil XID from storage engines, skipping position init
2014-10-17 15:43:27 53 [Note] WSREP: wsrep_load(): loading provider library 'none'
2014-10-17 15:43:27 7fe0e0f2e780 InnoDB: Warning: Using innodb_additional_mem_pool_size is DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator.
2014-10-17 15:43:27 7fe0e0f2e780 InnoDB: Warning: Using innodb_locks_unsafe_for_binlog is DEPRECATED. This option may be removed in future releases. Please use READ COMMITTED transaction isolation level instead, see http://dev.mysql.com/doc/refman/5.6/en/set-transaction.html.
2014-10-17 15:43:27 53 [Note] InnoDB: Using atomics to ref count buffer pool pages
2014-10-17 15:43:27 53 [Note] InnoDB: The InnoDB memory heap is disabled
2014-10-17 15:43:27 53 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2014-10-17 15:43:27 53 [Note] InnoDB: Memory barrier is not used
2014-10-17 15:43:27 53 [Note] InnoDB: Compressed tables use zlib 1.2.8
2014-10-17 15:43:27 53 [Note] InnoDB: Using Linux native AIO
2014-10-17 15:43:27 53 [Note] InnoDB: Using CPU crc32 instructions
2014-10-17 15:43:27 53 [Note] InnoDB: Initializing buffer pool, size = 64.0M
2014-10-17 15:43:27 53 [Note] InnoDB: Completed initialization of buffer pool
2014-10-17 15:43:27 53 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!
2014-10-17 15:43:27 53 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB
2014-10-17 15:43:27 53 [Note] InnoDB: Database physically writes the file full: wait...
2014-10-17 15:43:28 53 [Note] InnoDB: Setting log file ./ib_logfile101 size to 128 MB
InnoDB: Progress in MB: 100
2014-10-17 15:43:34 53 [Note] InnoDB: Setting log file ./ib_logfile1 size to 128 MB
InnoDB: Progress in MB: 100
2014-10-17 15:43:43 53 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0
2014-10-17 15:43:43 53 [Warning] InnoDB: New log files created, LSN=45781
2014-10-17 15:43:43 53 [Note] InnoDB: Doublewrite buffer not found: creating new
2014-10-17 15:43:43 53 [Note] InnoDB: Doublewrite buffer created
2014-10-17 15:43:43 53 [Note] InnoDB: 128 rollback segment(s) are active.
2014-10-17 15:43:43 53 [Warning] InnoDB: Creating foreign key constraint system tables.
2014-10-17 15:43:43 53 [Note] InnoDB: Foreign key constraint system tables created
2014-10-17 15:43:43 53 [Note] InnoDB: Creating tablespace and datafile system tables.
2014-10-17 15:43:43 53 [Note] InnoDB: Tablespace and datafile system tables created.
2014-10-17 15:43:43 53 [Note] InnoDB: Waiting for purge to start
2014-10-17 15:43:43 53 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.20-68.0 started; log sequence number 0
2014-10-17 15:43:43 7fe0c246e700 InnoDB: Loading buffer pool(s) from .//ib_buffer_pool
2014-10-17 15:43:43 7fe0c246e700 InnoDB: Cannot open './/ib_buffer_pool' for reading: No such file or directory
2014-10-17 15:43:43 53 [Warning] Bootstrap mode disables GTIDs. Bootstrap mode should only be used by mysql_install_db which initializes the MySQL data directory and creates system tables.
2014-10-17 15:43:43 53 [Note] RSA private key file not found: /var/lib/mysql//private_key.pem. Some authentication plugins will not work.
2014-10-17 15:43:43 53 [Note] RSA public key file not found: /var/lib/mysql//public_key.pem. Some authentication plugins will not work.
2014-10-17 15:43:44 53 [Note] WSREP: Service disconnected.
2014-10-17 15:43:45 53 [Note] WSREP: Some threads may fail to exit.
2014-10-17 15:43:45 53 [Note] Binlog end
2014-10-17 15:43:45 53 [Note] InnoDB: FTS optimize thread exiting.
2014-10-17 15:43:45 53 [Note] InnoDB: Starting shutdown...
2014-10-17 15:43:45 7fe0c246e700 InnoDB: Dumping buffer pool(s) to .//ib_buffer_pool
2014-10-17 15:43:45 7fe0c246e700 InnoDB: Buffer pool(s) dump completed at 141017 15:43:45
2014-10-17 15:43:47 53 [Note] InnoDB: Shutdown completed; log sequence number 1625977
2014-10-17 15:43:47 221 [Note] WSREP: Read nil XID from storage engines, skipping position init
2014-10-17 15:43:47 221 [Note] WSREP: wsrep_load(): loading provider library 'none'
2014-10-17 15:43:47 7fc35fa5c780 InnoDB: Warning: Using innodb_additional_mem_pool_size is DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator.
2014-10-17 15:43:47 7fc35fa5c780 InnoDB: Warning: Using innodb_locks_unsafe_for_binlog is DEPRECATED. This option may be removed in future releases. Please use READ COMMITTED transaction isolation level instead, see http://dev.mysql.com/doc/refman/5.6/en/set-transaction.html.
2014-10-17 15:43:47 221 [Note] InnoDB: Using atomics to ref count buffer pool pages
2014-10-17 15:43:47 221 [Note] InnoDB: The InnoDB memory heap is disabled
2014-10-17 15:43:47 221 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2014-10-17 15:43:47 221 [Note] InnoDB: Memory barrier is not used
2014-10-17 15:43:47 221 [Note] InnoDB: Compressed tables use zlib 1.2.8
2014-10-17 15:43:47 221 [Note] InnoDB: Using Linux native AIO
2014-10-17 15:43:47 221 [Note] InnoDB: Using CPU crc32 instructions
2014-10-17 15:43:47 221 [Note] InnoDB: Initializing buffer pool, size = 64.0M
2014-10-17 15:43:47 221 [Note] InnoDB: Completed initialization of buffer pool
2014-10-17 15:43:47 221 [Note] InnoDB: Highest supported file format is Barracuda.
2014-10-17 15:43:47 221 [Note] InnoDB: 128 rollback segment(s) are active.
2014-10-17 15:43:47 221 [Note] InnoDB: Waiting for purge to start
2014-10-17 15:43:47 221 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.20-68.0 started; log sequence number 1625977
2014-10-17 15:43:47 7fc340fd0700 InnoDB: Loading buffer pool(s) from .//ib_buffer_pool
2014-10-17 15:43:47 221 [Warning] Bootstrap mode disables GTIDs. Bootstrap mode should only be used by mysql_install_db which initializes the MySQL data directory and creates system tables.
2014-10-17 15:43:47 221 [Note] RSA private key file not found: /var/lib/mysql//private_key.pem. Some authentication plugins will not work.
2014-10-17 15:43:47 221 [Note] RSA public key file not found: /var/lib/mysql//public_key.pem. Some authentication plugins will not work.
2014-10-17 15:43:47 7fc340fd0700 InnoDB: Buffer pool(s) load completed at 141017 15:43:47
2014-10-17 15:43:47 221 [Note] WSREP: Service disconnected.
2014-10-17 15:43:48 221 [Note] WSREP: Some threads may fail to exit.
2014-10-17 15:43:48 221 [Note] Binlog end
2014-10-17 15:43:48 221 [Note] InnoDB: FTS optimize thread exiting.
2014-10-17 15:43:48 221 [Note] InnoDB: Starting shutdown...
2014-10-17 15:43:48 7fc340fd0700 InnoDB: Dumping buffer pool(s) to .//ib_buffer_pool
2014-10-17 15:43:48 7fc340fd0700 InnoDB: Buffer pool(s) dump completed at 141017 15:43:48
2014-10-17 15:43:50 221 [Note] InnoDB: Shutdown completed; log sequence number 1625987
[16:35][cwhsu@cwhsu:/var/log/mysql ]$ ls -al
total 16
drwxr-xr-x 2 mysql mysql 4096 Oct 17 16:35 .
drwxr-xr-x 5 root root 4096 Oct 16 19:26 ..
-rw-rw---- 1 mysql mysql 6927 Oct 17 15:43 error.log
[16:35][cwhsu@cwhsu:/var/log/mysql ]$ cd ..
[16:35][cwhsu@cwhsu:/var/log ]$ ls -al
total 28
drwxr-xr-x 5 root root 4096 Oct 16 19:26 .
drwxr-xr-x 41 root root 4096 Oct 17 16:01 ..
drwxr-xr-x 2 mysql mysql 4096 Oct 17 16:35 mysql
drwxr-xr-x 2 www-data www-data 4096 Oct 16 19:26 nginx
-rw------- 1 root root 5499 Oct 17 15:43 php5-fpm.log
-rw------- 1 root root 0 Oct 16 19:26 php-fpm-slow.log
drwxr-xr-x 2 cwhsu developer 4096 Oct 17 15:43 supervisor
[16:41][cwhsu@cwhsu:/var/run ]$ ls /var/run/mysqld/ -ld
drwxr-xr-x 2 mysql root 4096 Oct 16 20:15 /var/run/mysqld/
[16:42][cwhsu@cwhsu:/var/run ]$ ls /var/run/mysqld/* -ld
-rw-rw---- 1 mysql mysql 5 Oct 16 20:15 /var/run/mysqld/mysqld.pid
-rwxrwxrwx 1 mysql mysql 0 Oct 16 20:15 /var/run/mysqld/mysqld.soc
这是最初的条件。然后我尝试service mysql start。
[16:35][cwhsu@cwhsu:/var/log ]$ service mysql start
* Starting MySQL (Percona XtraDB Cluster) database server mysqld
* Please take a look at the syslog.
[fail]
所以我尝试用mysqld_safe来找出问题所在。
[16:38][cwhsu@cwhsu:/var/log ]$ mysqld_safe
141017 16:40:56 mysqld_safe Logging to '/var/log/mysql/error.log'.
cat: /var/run/mysqld/mysqld.pid: Permission denied
/bin/rm: cannot remove ‘/var/run/mysqld/mysqld.pid’: Permission denied
141017 16:40:56 mysqld_safe Fatal error: Can't remove the pid file:
/var/run/mysqld/mysqld.pid
Please remove it manually and start /usr/bin/mysqld_safe again;
mysqld daemon not started
/usr/bin/mysqld_safe: 137: /usr/bin/mysqld_safe: cannot create /var/log/mysql/error.log: Permission denied
[16:40][cwhsu@cwhsu:/var/log ]$
现在，我已经尝试了很多次，所以我只是sudo chmod 777 /var/run/mysql/mysql.pid来简化这个过程。
[16:44][cwhsu@cwhsu:/var/run ]$ sudo chmod 777 /var/run/mysqld/mysqld.pid
[16:46][cwhsu@cwhsu:/var/run ]$ mysqld_safe
141017 16:46:28 mysqld_safe Logging to '/var/log/mysql/error.log'.
/bin/rm: cannot remove ‘/var/run/mysqld/mysqld.pid’: Permission denied
141017 16:46:28 mysqld_safe Fatal error: Can't remove the pid file:
/var/run/mysqld/mysqld.pid
Please remove it manually and start /usr/bin/mysqld_safe again;
mysqld daemon not started
/usr/bin/mysqld_safe: 137: /usr/bin/mysqld_safe: cannot create /var/log/mysql/error.log: Permission denied
如果我删除mysqld.pid并再试一次。
[16:47][cwhsu@cwhsu:/var/run ]$ sudo rm -rf /var/run/mysqld/mysqld.pid
[16:48][cwhsu@cwhsu:/var/run ]$ mysqld_safe
141017 16:49:02 mysqld_safe Logging to '/var/log/mysql/error.log'.
141017 16:49:02 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
/bin/rm: cannot remove ‘/var/run/mysqld/mysqld.sock’: Permission denied
141017 16:49:02 mysqld_safe Skipping wsrep-recover for empty datadir: /var/lib/mysql
141017 16:49:02 mysqld_safe Assigning 00000000-0000-0000-0000-000000000000:-1 to
wsrep_start_position
141017 16:49:03 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
现在我卡在这里，不知道该怎么做。有没有人对出了什么问题有疑问？
我在这里尝试解决方案https://bugs.mysql.com/bug.php?id=73952。 我修改了my.cnf并添加了
#innodb_buffer_pool_load_at_startup=ON
innodb_buffer_pool_dump_at_shutdown=ON
然后运行我的启动脚本
#!/bin/sh
test -x /usr/bin/mysql_install_db && test ! -d /var/lib/mysql/mysql && /usr/bin/mysql_install_db
mkdir -p /var/log/mysql && chown mysql:mysql /var/log/mysql && chmod 755 /var/log/mysql
mkdir -p /var/log/nginx && chown www-data:www-data /var/log/nginx && chmod 755 /var/log/nginx
将my.cnf修改为
innodb_buffer_pool_load_at_startup=ON
innodb_buffer_pool_dump_at_shutdown=ON
再次运行脚本，没有运气......
mysql守护进程仍然无法启动，如果我尝试mysqld_safe它会显示
[17:35][cwhsu@cwhsu:/var/lib/mysql ]$ mysqld_safe
141017 17:35:34 mysqld_safe Logging to '/var/log/mysql/error.log'.
141017 17:35:34 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
/usr/bin/mysqld_safe: 137: /usr/bin/mysqld_safe: cannot create /var/log/mysql/error.log: Permission denied
/bin/rm: cannot remove ‘/var/run/mysqld/mysqld.sock’: Permission denied
141017 17:35:34 mysqld_safe Skipping wsrep-recover for empty datadir: /var/lib/mysql
/usr/bin/mysqld_safe: 137: /usr/bin/mysqld_safe: cannot create /var/log/mysql/error.log: Permission denied
141017 17:35:34 mysqld_safe Assigning 00000000-0000-0000-0000-000000000000:-1 to wsrep_start_position
/usr/bin/mysqld_safe: 137: /usr/bin/mysqld_safe: cannot create /var/log/mysql/error.log: Permission denied
/usr/bin/mysqld_safe: 1: eval: cannot create /var/log/mysql/error.log: Permission denied
141017 17:35:34 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
/usr/bin/mysqld_safe: 137: /usr/bin/mysqld_safe: cannot create /var/log/mysql/error.log: Permission denied