mariadb 集群使用

集群启动问题

在kvm虚机下，启动mariad，日志报如下错误：

 :: [Note] /usr/libexec/mysqld: Shutdown complete

 :: mysqld_safe mysqld from pid file /var/run/mariadb/mariadb.pid ended
 :: mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
 :: [Note] /usr/libexec/mysqld (mysqld 5.5.-MariaDB) starting as process  ...
 :: InnoDB: The InnoDB memory heap is disabled
 :: InnoDB: Mutexes and rw_locks use GCC atomic builtins
 :: InnoDB: Compressed tables use zlib 1.2.
 :: InnoDB: Using Linux native AIO
 :: InnoDB: Initializing buffer pool, size = 128.0M
 :: InnoDB: Completed initialization of buffer pool
 :: InnoDB: highest supported file format is Barracuda.
 ::  InnoDB: Waiting for the background threads to start
 :: Percona XtraDB (http://www.percona.com) 5.5.43-MariaDB-37.2 started; log sequence number 1597945
 :: [Note] Plugin 'FEEDBACK' is disabled.
 :: [ERROR] Can't create IP socket: Success
 :: [ERROR] Aborting

 ::  InnoDB: Starting shutdown...
 ::  InnoDB: Shutdown completed; log sequence number
 :: [Note] /usr/libexec/mysqld: Shutdown complete

 :: mysqld_safe mysqld from pid file /var/run/mariadb/mariadb.pid ended
 :: mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
 :: [Note] /usr/libexec/mysqld (mysqld 5.5.-MariaDB) starting as process  ...
 :: InnoDB: The InnoDB memory heap is disabled
 :: InnoDB: Mutexes and rw_locks use GCC atomic builtins
 :: InnoDB: Compressed tables use zlib 1.2.
 :: InnoDB: Using Linux native AIO
 :: InnoDB: Initializing buffer pool, size = 128.0M
 :: InnoDB: Completed initialization of buffer pool
 :: InnoDB: highest supported file format is Barracuda.
 :: mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
 :: [Note] /usr/libexec/mysqld (mysqld 5.5.-MariaDB) starting as process  ...
 :: InnoDB: The InnoDB memory heap is disabled
 :: InnoDB: Mutexes and rw_locks use GCC atomic builtins
 :: InnoDB: Compressed tables use zlib 1.2.
 :: InnoDB: Using Linux native AIO
 :: InnoDB: Initializing buffer pool, size = 128.0M
 :: InnoDB: Completed initialization of buffer pool
InnoDB: The first specified data file ./ibdata1 did not exist:
InnoDB: a new database to be created!
 ::  InnoDB: Setting file ./ibdata1 size to  MB
InnoDB: Database physically writes the file full: wait...
 ::  InnoDB: Log file ./ib_logfile0 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile0 size to  MB
InnoDB: Database physically writes the file full: wait...
 ::  InnoDB: Log file ./ib_logfile1 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile1 size to  MB
InnoDB: Database physically writes the file full: wait...
InnoDB: Doublewrite buffer not found: creating new
InnoDB: Doublewrite buffer created
InnoDB:  rollback segment(s) active.
InnoDB: Creating foreign key constraint system tables
InnoDB: Foreign key constraint system tables created
 ::  InnoDB: Waiting for the background threads to start
 :: Percona XtraDB (http://www.percona.com) 5.5.43-MariaDB-37.2 started; log sequence number 0
 :: [Note] Plugin 'FEEDBACK' is disabled.
 :: [ERROR] Can't create IP socket: Success
 :: [ERROR] Aborting

对应的错误码：  | 1081 | 08S01 | ER_IPSOCK_ERROR| Can't create IP socket

问题： mariadb的配置文件中，bind-address 的值不正确。  /etc/my.cnf  或 /etc/my.cnf.d/*

解决： 设置正确的bind-address值。

http://bbs.chinaunix.net/thread-4193700-1-1.html

清除数据，重新初始化数据库

#rm /etc/my.cnf
#rm -rf /var/lib/mysql
#rm -rf /usr/share/mysql
#rm -rf /usr/lib/mysql
#rm -rf /var/run/mysql/

#mysql_install_db --user=mysql --datadir=/var/lib/mysql/

[root@vStack ~]# mysql_install_db --user=mysql --datadir=/var/lib/mysql
Installing MariaDB/MySQL system tables in '/var/lib/mysql' ...
 :: [Note] /usr/libexec/mysqld (mysqld 5.5.-MariaDB) starting as process  ...
 :: [ERROR] mysqld: File '/var/lib/mysql/aria_log_control' not found (Errcode: 13)
 :: [ERROR] mysqld: Got error 'Can't open file' when trying to use aria control file '/var/lib/mysql/aria_log_control'
 :: [ERROR] Plugin 'Aria' init function returned error.
 :: [ERROR] Plugin 'Aria' registration as a STORAGE ENGINE failed.
 :: [ERROR] mysqld: Can't find file: './mysql/db.frm' (errno: 13)
ERROR:   Can't find file: './mysql/db.frm' (errno: 13)
 :: [ERROR] Aborting

 :: [Note] /usr/libexec/mysqld: Shutdown complete

Installation of system tables failed!  Examine the logs in
/var/lib/mysql for more information.

The problem could be conflicting information in an external
my.cnf files. You can ignore these by doing:

    shell> /usr/bin/scripts/mysql_install_db --defaults-file=~/.my.cnf

You can also try to start the mysqld daemon with:

    shell> /usr/libexec/mysqld --skip-grant --general-log &

and use the command line tool /usr/bin/mysql
to connect to the mysql database and look at the grant tables:

    shell> /usr/bin/mysql -u root mysql
    mysql> show tables;

Try 'mysqld --help' if you have problems with paths.  Using
--general-log gives you a log in /var/lib/mysql that may be helpful.

The latest information about mysql_install_db is available at
https://mariadb.com/kb/en/installing-system-tables-mysql_install_db
MariaDB is hosted on launchpad; You can find the latest source and
email lists at http://launchpad.net/maria

Please check all of the above before submitting a bug report
at http://mariadb.org/jira

https://www.reddit.com/r/linuxadmin/comments/myy2b/mariadb_fails_to_start_due_to_missing_file_which/

问题：文件权限问题。

修改：chown mysql:mysql -R .   将/var/lib/mysql 下的所有文件、目录的所有者，修改为mysql。

重新启动 mariadb服务器，即可。