设为首页 收藏本站
查看: 1036|回复: 0

[经验分享] 【MySQL运维】MySQL多实例部署案例

[复制链接]

尚未签到

发表于 2018-9-26 13:14:36 | 显示全部楼层 |阅读模式
  昨天晚上在群中和一些网友聊到了MySQL多实例的话题,最早接触MySQL多实例还是在1年前,那会我刚步入运维行业,做过MySQL多实例的相关实验,在后来的工作中也很少用到多实例,一直就淡漠了它,昨天再次提及,故此再次重新整理下以前的笔记,参考一些大牛的观点,也参考我的好友贺总(尊称)的意见,特此写下这篇文章!废话不说,切入正题....
  在同一台物理服务器上部署多个实例,而多实例的部署方式简单,但是如何才能减少我们生产环境的维护成本,如何减少我们出错的机会,如何方便我们后续的迁移和清理等工作,以及如何借助多实例绑定的方式提高服务器的CPU资源利用率.
  什么情况下我们会考虑一台物理服务器上部署多个实例,大致有以下几种情况:
  u采用了数据伪分布式架构的原因,而项目启动初期又不一定有那多的用户量,为此先一组物理数据库服务器,但部署多个实例,方便后续迁移;
  u为规避mysql对SMP架构不支持的缺陷,使用多实例绑定处理器的办法(NUMA处理器必须支持,不过现在大部分处理器都支持的!),把不同的数据库分配到不同的实例上提供数据服务;
  u一台物理数据库服务器支撑多个数据库的数据服务,为提高mysql复制的从机的恢复效率,采用多实例部署;
  u已经为双主复制的mysql数据库服务器架构,想部分重要业务的数据多一份异地机房的热备份,而mysql复制暂不支持多主的复制模式,且不给用户提供服务,为有效控制成本,会考虑异地机房部署一台性能超好的物理服务器,甚至外加磁盘柜的方式,为此也会部署多实例;
  u传统游戏行业的MMO/MMORPG,以及Web Game,每一个服都对应一个数据库,而可能要做很多数据查询和数据订正的工作,为减少维护而出错的概率,也可能采用多实例部署的方式,按区的概念分配数据库;
  下面是具体的搭建细节!
  首先说明下MySQL的运行平台:
  CentOS 5.8 x86_64
  MySQL-5.5.25
  准备的软件列表:
  mysql-5.5.25.tar.gz
  cmake-2.8.4.tar.gz
  libunwind-1.0.1.tar.gz
  gperftools-2.0.tar.gz
  1. 安装Tcmalloc 优化加速mysql
  64位操作系统要先安装libunwind库,32位操作系统可以不要安装:

  •   cd /home/qiuzhijun/soft
  •   tar zxf libunwind-1.0.1.tar.gz
  •   cd libunwind-1.0.1
  •   ./configure
  •   make;make install
  •   cd ..
  •   tar zxf gperftools-2.0.tar.gz
  •   cd gperftools-2.0
  •   ./configure
  •   make;make install
  •   cd ..
  •   echo "/usr/local/lib" > /etc/ld.so.conf.d/usr_local_lib.conf
  •   /sbin/ldconfig
  •   cd ..
  利用TCMalloc提高mysql在高并发下的性能:

  •   [root@MySQL5_10 ~]# ll /usr/local/lib/libtcmalloc.so
  •   lrwxrwxrwx 1 root root 20 Jul  9 21:17 /usr/local/lib/libtcmalloc.so -> libtcmalloc.so.4.1.0
  •   sed -i '/# executing mysqld_safe/a\export LD_PRELOAD=/usr/local/lib/libtcmalloc.so' /usr/local/webserver/mysql/bin/mysqld_safe
  2.安装mysql

  •   useradd -s /sbin/nologin -M mysql
  •   mkdir -p /data/mysql/data330{6,7}/{sock,data,tmpdir,log,binlog, innodb_log, innodb_ts}
  •   chown -R mysql:mysql /data/mysql
  •   cd /home/qiuzhijun/soft
  •   tar zxf cmake-2.8.4.tar.gz
  •   cd cmake-2.8.4
  •   ./bootstrap
  •   gmake
  •   gmake install
  •   cd ..
  •   tar zxvf mysql-5.5.25.tar.gz
  •   cd mysql-5.5.25/
  •   rm -rf CMakeCache.txt
  •   cmake -DCMAKE_INSTALL_PREFIX=/usr/local/webserver/mysql -DMYSQL_UNIX_ADDR=/tmp/mysql.sock -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DEXTRA_CHARSETS=all -DWITH_MYISAM_STORAGE_ENGINE=1 -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_READLINE=1 -DENABLED_LOCAL_INFILE=1 -DMYSQL_DATADIR=/data/mysql/data -DMYSQL_TCP_PORT=3306 -DWITH_DEBUG=0
  •   make;make install
  •   chown -R mysql:mysql /usr/local/webserver/mysql
  •   ln -s /usr/local/webserver/mysql/lib/libmysqlclient.so.18 /usr/lib/libmysqlclient.so.18
  •   echo "/usr/local/webserver/mysql/lib/mysql" >> /etc/ld.so.conf
  3. 创建配置文件

  •   #++++++++++++++++++++++++++++++++ multi ++++++++++++++++++++++++++
  •   [mysqld_multi]
  •   mysqld = /usr/local/webserver/mysql/bin/mysqld_safe
  •   mysqladmin = /usr/local/webserver/mysql/bin/mysqladmin
  •   use = root
  •   #password =
  •   log = /data/mysql/multi.log

  •   [client]
  •   #default-character-set = utf8
  •   #++++++++++++++++++++++++++++++++++3306++++++++++++++++++++++++++
  •   [mysqld3306]
  •   user = mysql
  •   port = 3306
  •   socket = /data/mysql/data3306/sock/mysql.sock
  •   pid-file = /data/mysql/data3306/sock/mysql.pid
  •   datadir = /data/mysql/data3306/data
  •   tmpdir = /data/mysql/data3306/tmpdir
  •   big_tables
  •   skip_external_locking
  •   skip-name-resolve
  •   lower_case_table_names = 1
  •   back_log = 100
  •   #default-storage-engine = INNODB
  •   max_connections = 800
  •   max_connect_errors = 100000
  •   interactive_timeout = 172800
  •   connect_timeout = 10
  •   max_allowed_packet = 4M
  •   max_heap_table_size = 128M
  •   tmp_table_size = 128M
  •   max_length_for_sort_data = 4096
  •   net_buffer_length = 8K
  •   sort_buffer_size = 8M
  •   join_buffer_size = 1M
  •   read_buffer_size = 1M
  •   read_rnd_buffer_size = 2M
  •   table_cache = 1024
  •   thread_cache_size = 64
  •   thread_concurrency = 8
  •   query_cache_type = 0
  •   query_cache_size = 64M
  •   query_cache_limit = 1M


  •   #*******************************  Logs>
  •   log-error = /data/mysql/data3306/log/error.log
  •   log_warnings
  •   long_query_time = 1
  •   slow_query_log
  •   slow_query_log_file = /data/mysql/data3306/log/slow-query.log
  •   log_queries_not_using_indexes
  •   binlog_cache_size = 8M
  •   max_binlog_size = 512M
  •   log-bin = /data/mysql/data3306/binlog/mysql-bin3306
  •   log-bin-index = /data/mysql/data3306/binlog/mysql-bin3306.index
  •   expire_logs_days = 3


  •   #*******************************  Replication>
  •   server-id = 3306
  •   report_port = 3306
  •   report_user = repl
  •   slave_net_timeout = 60
  •   innodb_flush_log_at_trx_commit = 2
  •   sync_binlog = 0
  •   binlog-format = mixed
  •   transaction_isolation = REPEATABLE-READ

  •   #******************************* MyISAM Specific options ****************************
  •   key_buffer_size = 32M
  •   bulk_insert_buffer_size = 16M
  •   myisam_sort_buffer_size = 64M
  •   myisam_max_sort_file_size = 1G
  •   myisam_repair_threads = 1
  •   myisam_recover

  •   #***************************** INNODB Specific options ******************************
  •   innodb_file_per_table = 1
  •   innodb_autoinc_lock_mode = 1
  •   innodb_fast_shutdown = 2
  •   innodb_additional_mem_pool_size = 64M
  •   innodb_buffer_pool_size = 5G
  •   innodb_data_home_dir = /data/mysql/data3306/innodb_ts
  •   innodb_data_file_path = ibdata1:256M:autoextend
  •   innodb_file_io_threads = 4
  •   innodb_thread_concurrency = 0
  •   innodb_log_buffer_size = 8M
  •   innodb_log_file_size = 128M
  •   #innodb_log_files_in_group = 5
  •   innodb_log_group_home_dir = /data/mysql/data3306/innodb_log
  •   innodb_max_dirty_pages_pct = 20
  •   innodb_lock_wait_timeout = 120
  •   innodb_flush_method=O_DIRECT


  •   #++++++++++++++++++++++++++++++++++3307++++++++++++++++++++++++++

  •   [mysqld3307]
  •   user = mysql
  •   port = 3307
  •   socket = /data/mysql/data3307/sock/mysql.sock
  •   pid-file = /data/mysql/data3307/sock/mysql.pid
  •   datadir = /data/mysql/data3307/data
  •   tmpdir = /data/mysql/data3307/tmpdir
  •   big_tables
  •   skip_external_locking
  •   skip-name-resolve
  •   lower_case_table_names = 1
  •   back_log = 100
  •   #default-storage-engine = INNODB
  •   max_connections = 800
  •   max_connect_errors = 100000
  •   interactive_timeout = 172800
  •   connect_timeout = 10
  •   max_allowed_packet = 4M
  •   max_heap_table_size = 128M
  •   tmp_table_size = 128M
  •   max_length_for_sort_data = 4096
  •   net_buffer_length = 8K
  •   sort_buffer_size = 8M
  •   join_buffer_size = 1M
  •   read_buffer_size = 1M
  •   read_rnd_buffer_size = 2M
  •   table_cache = 1024
  •   thread_cache_size = 64
  •   thread_concurrency = 8
  •   query_cache_type = 0
  •   query_cache_size = 64M
  •   query_cache_limit = 1M


  •   #*******************************  Logs>
  •   log-error = /data/mysql/data3307/log/error.log
  •   log_warnings
  •   long_query_time = 1
  •   slow_query_log
  •   slow_query_log_file = /data/mysql/data3307/log/slow-query.log
  •   log_queries_not_using_indexes
  •   binlog_cache_size = 8M
  •   max_binlog_size = 512M
  •   log-bin = /data/mysql/data3307/binlog/mysql-bin3307
  •   log-bin-index = /data/mysql/data3307/binlog/mysql-bin3307.index
  •   expire_logs_days = 3


  •   #*******************************  Replication>
  •   server-id = 3307
  •   report_port = 3307
  •   report_user = repl
  •   slave_net_timeout = 60
  •   innodb_flush_log_at_trx_commit = 2
  •   sync_binlog = 0
  •   binlog-format = mixed
  •   transaction_isolation = REPEATABLE-READ

  •   #******************************* MyISAM Specific options ****************************
  •   key_buffer_size = 32M
  •   bulk_insert_buffer_size = 16M
  •   myisam_sort_buffer_size = 64M
  •   myisam_max_sort_file_size = 1G
  •   myisam_repair_threads = 1
  •   myisam_recover

  •   #***************************** INNODB Specific options ******************************
  •   innodb_file_per_table = 1
  •   innodb_autoinc_lock_mode = 1
  •   innodb_fast_shutdown = 2
  •   innodb_additional_mem_pool_size = 64M
  •   innodb_buffer_pool_size = 5G
  •   innodb_data_home_dir = /data/mysql/data3307/innodb_ts
  •   innodb_data_file_path = ibdata1:256M:autoextend
  •   innodb_file_io_threads = 4
  •   innodb_thread_concurrency = 0
  •   innodb_log_buffer_size = 8M
  •   innodb_log_file_size = 128M
  •   #innodb_log_files_in_group = 5
  •   innodb_log_group_home_dir = /data/mysql/data3307/innodb_log
  •   innodb_max_dirty_pages_pct = 20
  •   innodb_lock_wait_timeout = 120
  •   innodb_flush_method=O_DIRECT

  •   [mysql]
  •   no-auto-rehash
  •   #prompt=”\\u@\\h : \\d \\r:\\m:\\s>”
  •   prompt="(\\u:MySQL5_10@qzhijun:\R:\m:\\s)[\\d]> "
  •   #tee=”/tmp/query.log”
  •   #pager=”less -i -n -S”
  •   max_allowed_packet = 1G

  •   [mysqldump]
  •   quick
  •   max_allowed_packet = 1G
  •   [mysqld_safe]
  •   open-files-limit = 8192

  •   [myisamchk]
  •   key_buffer = 512M
  •   sort_buffer_size = 128M
  •   read_buffer = 8M
  •   write_buffer = 8M

  •   [mysqlhotcopy]
  •   interactive-timeout
  还有几点需要说明的:
  a. 配置文件中写了两个mysqld节点,也就是启用了两个实例!要是有多个实例,就可以在配置文件加相应的mysqld节点,也可以给定每个实例单个配置,但是个人推荐用一个配置文件。
  b. 配置文件中参数比较多,可能有些版本不同导致有些参数不适用,在后面启动时可能会报错,请大家多看错误日志!基本上通过查看错误日志能解决90%以上的问题,这也是排除故障的最基础的方法,大家应该养成这样的习惯。
  c. 错误日志不能完全理解为,错误日志记录的全是错误日志,它记录了错误信息、警告信息、服务启动状态信息等,这是大部分网友容易误解的!
  d. 这里的配置文件内容仅供参考,自己可以参考安装目录support-files目录下相关配置文件,根据自己的生产需求来选择配置文件。
  配置文件中对于多实例部分参数说明:
  u[mysqld_multi] 节点下相关参数
  user参数:该参数为mysqld_multi命令配置一个统一默认的管理帐号,能够统一管理旗下所有mysqld服务节点的运行、管理、检查等相关信息,若在此设置的话,命令方式执行时没制定就使用此参数的值;
  password参数:该参数是对应user的密码,但是密码信息我们一般都不写到配置文件中,以避免泄漏,而是执行命令的时候再输入;
  log:该参数用于记录mysqld_multi执行命令的日志信息,以及出错信息,以便于我们查找问题的根源;
  u[mysqld] 节点下相关参数
  该节点作为MySQL的服务节点,是整个配置文件的重点,也是难点,相关的参数调优等都集结在此节点之下。一台主机部署要多个实例,就涉及到各个实例各自的数据文件如何存放和隔离的问题,处于实例相关的目录和数据清理方便,以及维护成本更低,减少维护时的出错概率,我们采用上述样例配置文件中的目录结构,以及目录和数据文件命名方式,接下来我们主要阐述部分参数设置的意义:
  user:该参数为mysqld服务启动后,mysqld使用何系统帐号运行mysqld服务的问题,不是指mysql授权表中创建的帐号,而是指操作系统级别中的帐号。我们安装mysql软件的时候,一般都会创建一个mysql帐号及为其制定用户编号,那么就可以把帐号名称mysql 或 mysql名称对应的用户编号,设置成参数user的值;
  port:该参数是指定该服务节点下实例的监听端口。
  其它大部分相关参数这里不再说明,请参考mysql5.5的官方手册!
  4. 初使化MySQL两个实例
  初使化mysqld3306实例:

  •   /usr/local/webserver/mysql/scripts/mysql_install_db --basedir=/usr/local/webserver/mysql/ --datadir=/data/mysql/data3306/data/ --user=mysql
  初使化mysqld3307实例:

  •   /usr/local/webserver/mysql/scripts/mysql_install_db --basedir=/usr/local/webserver/mysql/ --datadir=/data/mysql/data3307/data/ --user=mysql
  初使化实例分别指定不同的数据目录,要注意!
  初使化出现如下字样,说明初使化成功:
  when specifying MySQL privileges !
  Installing MySQL system tables...
  OK
  Filling help tables...
  OK
  ....
  ....
  You can start the MySQL daemon with:
  cd /usr/local/webserver/mysql/ ; /usr/local/webserver/mysql//bin/mysqld_safe &
  You can test the MySQL daemon with mysql-test-run.pl
  cd /usr/local/webserver/mysql//mysql-test ; perl mysql-test-run.pl
  Please report any problems with the /usr/local/webserver/mysql//scripts/mysqlbug script!
  很多网友在安装mysql时,启动mysql服务时,总是启动不成功,很有可能就是各网友朋友不够细心,MySQL初使化这步没成功导致!
  5. 一切准备就绪,启动MySQL实例
  启动命令mysqld_multi
  命令执行语法:
  mysqld_multi [OPTIONS] {start|stop|report} [GNR,GNR,GNR...]
  或者
  mysqld_multi [OPTIONS] {start|stop|report} [GNR-GNR,GNR,GNR-GNR,...]
  示例:
  mysqld_multi start 3306,3307
  或者
  mysqld_multi start 3306-3307
  更多mysqld_multi命令的用法请参考官方文档和网络上其它的文档!同时也可以拷贝MySQL安装目录下support-files/mysqld_multi.server 脚本来启动多实例,这里不再说明!

  •   mysqld_multi start 3306
  •   mysqld_multi start 3307
  启动完成后,查看各实例错误日志文件:
  [root@MySQL5_10 ~]# cat /data/mysql/data3306/log/error.log
  121019 20:33:37 mysqld_safe Starting mysqld daemon with databases from /data/mysql/data3306/data
  121019 20:33:38 InnoDB: The InnoDB memory heap is disabled
  121019 20:33:38 InnoDB: Mutexes and rw_locks use InnoDB's own implementation
  121019 20:33:38 InnoDB: Compressed tables use zlib 1.2.3

  121019 20:33:38 InnoDB: Initializing buffer pool,>  121019 20:33:38 InnoDB: Completed initialization of buffer pool
  InnoDB: The first specified data file /data/mysql/data3306/innodb_ts/ibdata1 did not exist:
  InnoDB: a new database to be created!

  121019 20:33:38  InnoDB: Setting file /data/mysql/data3306/innodb_ts/ibdata1>  InnoDB: Database physically writes the file full: wait...
  InnoDB: Progress in MB: 100 200
  121019 20:33:49  InnoDB: Log file /data/mysql/data3306/innodb_log/ib_logfile0 did not exist: new to be created

  InnoDB: Setting log file /data/mysql/data3306/innodb_log/ib_logfile0>  InnoDB: Database physically writes the file full: wait...
  InnoDB: Progress in MB: 100
  121019 20:33:55  InnoDB: Log file /data/mysql/data3306/innodb_log/ib_logfile1 did not exist: new to be created

  InnoDB: Setting log file /data/mysql/data3306/innodb_log/ib_logfile1>  InnoDB: Database physically writes the file full: wait...
  InnoDB: Progress in MB: 100
  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
  121019 20:34:01  InnoDB: Waiting for the background threads to start
  121019 20:34:02 InnoDB: 1.1.6 started; log sequence number 0
  121019 20:34:03 [Note] Event Scheduler: Loaded 0 events
  121019 20:34:03 [Note] /usr/local/webserver/mysql/bin/mysqld: ready for connections.
  Version: '5.5.12-log'  socket: '/data/mysql/data3306/sock/mysql.sock'  port: 3306  Source distribution
  [root@MySQL5_10 ~]# cat /data/mysql/data3307/log/error.log
  121019 20:44:47 mysqld_safe mysqld from pid file /data/mysql/data3307/sock/mysql.pid ended
  121019 20:47:22 mysqld_safe Starting mysqld daemon with databases from /data/mysql/data3307/data
  121019 20:47:22 InnoDB: The InnoDB memory heap is disabled
  121019 20:47:22 InnoDB: Mutexes and rw_locks use InnoDB's own implementation
  121019 20:47:22 InnoDB: Compressed tables use zlib 1.2.3

  121019 20:47:22 InnoDB: Initializing buffer pool,>  121019 20:47:22 InnoDB: Completed initialization of buffer pool
  InnoDB: The first specified data file /data/mysql/data3307/innodb_ts/ibdata1 did not exist:
  InnoDB: a new database to be created!

  121019 20:47:22  InnoDB: Setting file /data/mysql/data3307/innodb_ts/ibdata1>  InnoDB: Database physically writes the file full: wait...
  InnoDB: Progress in MB: 100 200
  121019 20:47:33  InnoDB: Log file /data/mysql/data3307/innodb_log/ib_logfile0 did not exist: new to be created

  InnoDB: Setting log file /data/mysql/data3307/innodb_log/ib_logfile0>  InnoDB: Database physically writes the file full: wait...
  InnoDB: Progress in MB: 100
  121019 20:47:40  InnoDB: Log file /data/mysql/data3307/innodb_log/ib_logfile1 did not exist: new to be created

  InnoDB: Setting log file /data/mysql/data3307/innodb_log/ib_logfile1>  InnoDB: Database physically writes the file full: wait...
  InnoDB: Progress in MB: 100
  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
  121019 20:47:46  InnoDB: Waiting for the background threads to start
  121019 20:47:47 InnoDB: 1.1.6 started; log sequence number 0
  121019 20:47:47 [Note] Recovering after a crash using /data/mysql/data3307/binlog/mysql-bin3307
  121019 20:47:47 [Note] Starting crash recovery...
  121019 20:47:47 [Note] Crash recovery finished.
  121019 20:47:47 [Note] Event Scheduler: Loaded 0 events
  121019 20:47:47 [Note] /usr/local/webserver/mysql/bin/mysqld: ready for connections.
  Version: '
  5.5.12-log'  socket: '/data/mysql/data3307/sock/mysql.sock'  port: 3307  Source distribution
  下面再看看mysqld_multi日志:
  [root@MySQL5_10 ~]# cat /data/mysql/multi.log
  Starting MySQL servers
  121019 20:33:37 mysqld_safe Logging to '/data/mysql/data3306/log/error.log'.
  121019 20:33:37 mysqld_safe Starting mysqld daemon with databases from /data/mysql/data3306/data
  mysqld_multi log file version 2.16; run: 五 10月 19 20:35:27 2012
  Starting MySQL servers
  121019 20:47:22 mysqld_safe Logging to '/data/mysql/data3307/log/error.log'.
  121019 20:47:22 mysqld_safe Starting mysqld daemon with databases from /data/mysql/data3307/data
  出现上面信息,说明多实例启动没有问题!
  也可通过查看端口信息:
  [root@MySQL5_10 ~]# lsof -i:3306

  COMMAND  PID  USER   FD   TYPE DEVICE>  mysqld  3463 mysql   13u  IPv4   9377       TCP *:mysql (LISTEN)
  [root@MySQL5_10 ~]# lsof -i:3307

  COMMAND  PID  USER   FD   TYPE DEVICE>  mysqld  9674 mysql   13u  IPv4  20787       TCP *:opsession-prxy (LISTEN)
  [root@MySQL5_10 ~]# ps aux |grep mysqld |grep -v grep
  显示结果略.........
  ................
  由于51CTO博客不可以发超过8万字,所以把ps的结果省略了,不然可以看到启动的参数都是mysqld节点下面设置的相关参数,都能在这里显示出来!
  我们还可以查看下各实例的监听端口:
  [root@MySQL5_10 ~]# netstat -ntlp |grep mysql
  tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      3463/mysqld
  tcp        0      0 0.0.0.0:3307                0.0.0.0:*                   LISTEN      9674/mysqld
  客户端登录各实例:
  [root@MySQL5_10 ~]# mysql -S /data/mysql/data3306/sock/mysql.sock
  Welcome to the MySQL monitor.  Commands end with ; or \g.

  Your MySQL connection>  Server version: 5.5.25-log Source distribution
  Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
  Oracle is a registered trademark of Oracle Corporation and/or its
  affiliates. Other names may be trademarks of their respective
  owners.
  Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
  (root:MySQL5_10@qzhijun:10:30:46)[(none)]>show databases;
  +--------------------+
  | Database           |
  +--------------------+
  | information_schema |
  | mysql              |
  | performance_schema |
  | test               |
  +--------------------+
  4 rows in set (0.03 sec)
  (root:MySQL5_10@qzhijun:10:31:07)[(none)]> \q
  [root@MySQL5_10 ~]# mysql -S /data/mysql/data3307/sock/mysql.sock
  Welcome to the MySQL monitor.  Commands end with ; or \g.

  Your MySQL connection>  Server version: 5.5.25-log Source distribution
  Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
  Oracle is a registered trademark of Oracle Corporation and/or its
  affiliates. Other names may be trademarks of their respective
  owners.
  Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
  (root:MySQL5_10@qzhijun:10:31:34)[(none)]>
  一个简单和多实例到此OK........



运维网声明 1、欢迎大家加入本站运维交流群:群②:261659950 群⑤:202807635 群⑦870801961 群⑧679858003
2、本站所有主题由该帖子作者发表,该帖子作者与运维网享有帖子相关版权
3、所有作品的著作权均归原作者享有,请您和我们一样尊重他人的著作权等合法权益。如果您对作品感到满意,请购买正版
4、禁止制作、复制、发布和传播具有反动、淫秽、色情、暴力、凶杀等内容的信息,一经发现立即删除。若您因此触犯法律,一切后果自负,我们对此不承担任何责任
5、所有资源均系网友上传或者通过网络收集,我们仅提供一个展示、介绍、观摩学习的平台,我们不对其内容的准确性、可靠性、正当性、安全性、合法性等负责,亦不承担任何法律责任
6、所有作品仅供您个人学习、研究或欣赏,不得用于商业或者其他用途,否则,一切后果均由您自己承担,我们对此不承担任何法律责任
7、如涉及侵犯版权等问题,请您及时通知我们,我们将立即采取措施予以解决
8、联系人Email:admin@iyunv.com 网址:www.yunweiku.com

所有资源均系网友上传或者通过网络收集,我们仅提供一个展示、介绍、观摩学习的平台,我们不对其承担任何法律责任,如涉及侵犯版权等问题,请您及时通知我们,我们将立即处理,联系人Email:kefu@iyunv.com,QQ:1061981298 本贴地址:https://www.yunweiku.com/thread-602386-1-1.html 上篇帖子: keepalived + mysqlroute +mysql实现mysql高可用 下篇帖子: Mysql+Corosync+Pacemaker+DRBD构建高可用Mysql-ALLEN
您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

扫码加入运维网微信交流群X

扫码加入运维网微信交流群

扫描二维码加入运维网微信交流群,最新一手资源尽在官方微信交流群!快快加入我们吧...

扫描微信二维码查看详情

客服E-mail:kefu@iyunv.com 客服QQ:1061981298


QQ群⑦:运维网交流群⑦ QQ群⑧:运维网交流群⑧ k8s群:运维网kubernetes交流群


提醒:禁止发布任何违反国家法律、法规的言论与图片等内容;本站内容均来自个人观点与网络等信息,非本站认同之观点.


本站大部分资源是网友从网上搜集分享而来,其版权均归原作者及其网站所有,我们尊重他人的合法权益,如有内容侵犯您的合法权益,请及时与我们联系进行核实删除!



合作伙伴: 青云cloud

快速回复 返回顶部 返回列表