day03-MySQL连接启动多实例 加我微信:loveoracle11g(请备注:进mysql微信群) 拉你进MySQL高级DBA(技术开车群)微信群呕!!! [root@mysql-node1 ~]# ss -tunlp | grep mysql tcp LISTEN 0 80 :::3306 :::* users:(("mysqld",pid=5985,fd=31)) [root@mysql-node1 ~]# mysql -uroot -p -S /tmp/mysql.sock mysql> grant all on *.* to root@'10.0.0.%' identified by '123' ; Query OK, 0 rows affected, 1 warning (0.01 sec) mysql> select user,host from mysql.user ; +---------------+-----------+ | user | host | +---------------+-----------+ | root | 10.0.0.% | | mysql.session | localhost | | mysql.sys | localhost | | root | localhost | +---------------+-----------+ 4 rows in set (0.00 sec) mysql> exit ; Bye 1、MySQL连接工具-mysql命令使用 自带客户端命令 mysql命令常用参数: -u 用户 -p 密码 -h IP -P 端口 -S socket文件 -e 免交互执行命令 < 导入SQL脚本 远程登录 [root@mysql-node1 ~]# mysql -uroot -p -h10.0.0.201 -P3306 Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 4 Server version: 5.7.20 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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. mysql> select @@socket ; +-----------------+ | @@socket | +-----------------+ | /tmp/mysql.sock | +-----------------+ 1 row in set (0.00 sec) mysql> exit ; Bye 本地登录 [root@mysql-node1 ~]# mysql -uroot -p -S /tmp/mysql.sock Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 7 Server version: 5.7.20 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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. mysql> exit ; Bye mysql -uroot -p 默认走的是socket [root@mysql-node1 ~]# mysql -uroot -p -h10.0.0.201 -P3306 -S /tmp/mysql.sock # 走的是远程 Enter password: mysql> show processlist ; +----+------+-------------------+------+---------+------+----------+------------------+ | Id | User | Host | db | Command | Time | State | Info | +----+------+-------------------+------+---------+------+----------+------------------+ | 8 | root | mysql-node1:39084 | NULL | Query | 0 | starting | show processlist | +----+------+-------------------+------+---------+------+----------+------------------+ 1 row in set (0.00 sec) [root@mysql-node1 ~]# mysql -uroot -p Enter password: mysql> show processlist ; +----+------+-------------------+------+---------+------+----------+------------------+ | Id | User | Host | db | Command | Time | State | Info | +----+------+-------------------+------+---------+------+----------+------------------+ | 8 | root | mysql-node1:39084 | NULL | Query | 0 | starting | show processlist | | 9 | root | localhost | NULL | Sleep | 4 | | NULL | +----+------+-------------------+------+---------+------+----------+------------------+ 2 rows in set (0.00 sec) [root@mysql-node1 ~]# mysql -uroot -p -e "select user,host from mysql.user;" Enter password: +---------------+-----------+ | user | host | +---------------+-----------+ | root | 10.0.0.% | | mysql.session | localhost | | mysql.sys | localhost | | root | localhost | +---------------+-----------+ [root@mysql-node1 ~]# rz -y rz waiting to receive. Starting zmodem transfer. Press Ctrl+C to cancel. Transferring world.sql... 100% 388 KB 388 KB/sec 00:00:01 0 Errors [root@mysql-node1 ~]# ls -l world.sql -rw-r--r-- 1 root root 397334 Apr 4 15:14 world.sql 导入SQL脚本 [root@mysql-node1 ~]# mysql -uroot -p < world.sql Enter password: [root@mysql-node1 ~]# mysql -uroot -p -e "show databases;" Enter password: +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | | world | +--------------------+ [root@mysql-node1 ~]# mysql -uroot -p -e "show tables from world;" Enter password: +-----------------+ | Tables_in_world | +-----------------+ | city | | country | | countrylanguage | +-----------------+ 2、MySQL连接工具-SQLyog和Navicat 这两个工具自己点八点吧 3、MySQL启动方式 [root@mysql-node1 ~]# cd /app/mysql/support-files/ [root@mysql-node1 /app/mysql/support-files]# ls -l mysql.server -rwxr-xr-x 1 mysql mysql 10576 Sep 14 2017 mysql.server [root@mysql-node1 ~]# cd /app/mysql/bin/ [root@mysql-node1 /app/mysql/bin]# ls -l mysqld_safe -rwxr-xr-x 1 mysql mysql 28494 Sep 14 2017 mysqld_safe [root@mysql-node1 ~]# /etc/init.d/mysqld stop Shutting down MySQL.. SUCCESS! [root@mysql-node1 ~]# mysqld_safe 2019-06-01T05:06:46.172948Z mysqld_safe Logging to '/data/mysql/mysql-node1.err'. 2019-06-01T05:06:46.210137Z mysqld_safe Starting mysqld daemon with databases from /data/mysql ^Z [1]+ Stopped mysqld_safe [root@mysql-node1 ~]# ss -tunlp | grep mysqld tcp LISTEN 0 80 :::3306 :::* users:(("mysqld",pid=9768,fd=16)) [root@mysql-node1 ~]# /etc/init.d/mysqld stop Shutting down MySQL.. SUCCESS! [root@mysql-node1 ~]# mysqld_safe & [2] 9821 [root@mysql-node1 ~]# 2019-06-01T05:08:16.932459Z mysqld_safe Logging to '/data/mysql/mysql-node1.err'. 2019-06-01T05:08:16.977111Z mysqld_safe Starting mysqld daemon with databases from /data/mysql [root@mysql-node1 ~]# [root@mysql-node1 ~]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.20 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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. mysql> exit ; Bye [root@mysql-node1 ~]# [root@mysql-node1 ~]# ps -ef | grep mysqld root 9627 8031 0 13:06 pts/0 00:00:00 /bin/sh /app/mysql/bin/mysqld_safe mysql 9768 9627 0 13:06 pts/0 00:00:00 [mysqld] <defunct> root 9821 8031 0 13:08 pts/0 00:00:00 /bin/sh /app/mysql/bin/mysqld_safe mysql 9962 9821 0 13:08 pts/0 00:00:00 /app/mysql/bin/mysqld --basedir=/app/mysql --datadir=/data/mysql --plugin-dir=/app/mysql/lib/plugin --user=mysql --log-error=mysql-node1.err --pid-file=mysql-node1.pid --socket=/tmp/mysql.sock --port=3306 root 9996 8031 0 13:09 pts/0 00:00:00 grep --color=auto mysqld [root@mysql-node1 ~]# /etc/init.d/mysqld stop Shutting down MySQL..2019-06-01T05:11:33.403598Z mysqld_safe mysqld from pid file /data/mysql/mysql-node1.pid ended SUCCESS! [2]- Done mysqld_safe [root@mysql-node1 ~]# mysqld & [2] 10030 [root@mysql-node1 ~]# 2019-06-01T05:11:47.429588Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2019-06-01T05:11:47.429678Z 0 [Note] --secure-file-priv is set to NULL. Operations related to importing and exporting data are disabled 2019-06-01T05:11:47.429702Z 0 [Note] mysqld (mysqld 5.7.20) starting as process 10030 ... 2019-06-01T05:11:47.434190Z 0 [Note] InnoDB: PUNCH HOLE support available 2019-06-01T05:11:47.434214Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2019-06-01T05:11:47.434219Z 0 [Note] InnoDB: Uses event mutexes 2019-06-01T05:11:47.434222Z 0 [Note] InnoDB: GCC builtin __sync_synchronize() is used for memory barrier 2019-06-01T05:11:47.434226Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3 2019-06-01T05:11:47.434229Z 0 [Note] InnoDB: Using Linux native AIO 2019-06-01T05:11:47.434618Z 0 [Note] InnoDB: Number of pools: 1 2019-06-01T05:11:47.434709Z 0 [Note] InnoDB: Using CPU crc32 instructions 2019-06-01T05:11:47.436093Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M 2019-06-01T05:11:47.443029Z 0 [Note] InnoDB: Completed initialization of buffer pool 2019-06-01T05:11:47.444830Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). 2019-06-01T05:11:47.457782Z 0 [Note] InnoDB: Highest supported file format is Barracuda. 2019-06-01T05:11:47.468611Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables 2019-06-01T05:11:47.468694Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ... 2019-06-01T05:11:47.504091Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB. 2019-06-01T05:11:47.505672Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active. 2019-06-01T05:11:47.505699Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active. 2019-06-01T05:11:47.506843Z 0 [Note] InnoDB: Waiting for purge to start 2019-06-01T05:11:47.557708Z 0 [Note] InnoDB: 5.7.20 started; log sequence number 3498147 2019-06-01T05:11:47.558860Z 0 [Note] Plugin 'FEDERATED' is disabled. 2019-06-01T05:11:47.566963Z 0 [Warning] Failed to set up SSL because of the following SSL library error: SSL context is not usable without certificate and private key 2019-06-01T05:11:47.567003Z 0 [Note] Server hostname (bind-address): '*'; port: 3306 2019-06-01T05:11:47.567072Z 0 [Note] IPv6 is available. 2019-06-01T05:11:47.567089Z 0 [Note] - '::' resolves to '::'; 2019-06-01T05:11:47.567115Z 0 [Note] Server socket created on IP: '::'. 2019-06-01T05:11:47.579677Z 0 [Note] InnoDB: Loading buffer pool(s) from /data/mysql/ib_buffer_pool 2019-06-01T05:11:47.581069Z 0 [Note] InnoDB: Buffer pool(s) load completed at 190601 13:11:47 2019-06-01T05:11:47.593310Z 0 [Note] Event Scheduler: Loaded 0 events 2019-06-01T05:11:47.594073Z 0 [Note] mysqld: ready for connections. Version: '5.7.20' socket: '/tmp/mysql.sock' port: 3306 MySQL Community Server (GPL) 2019-06-01T05:11:47.594100Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-partition-engine-check' to skip this check. 2019-06-01T05:11:47.594108Z 0 [Note] Beginning of list of non-natively partitioned tables 2019-06-01T05:11:47.613943Z 0 [Note] End of list of non-natively partitioned tables [root@mysql-node1 ~]# netstat -tunlp | grep mysql tcp6 0 0 :::3306 :::* LISTEN 10030/mysqld [root@mysql-node1 ~]# [root@mysql-node1 ~]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.20 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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. mysql> exit ; Bye [root@mysql-node1 ~]# [root@mysql-node1 ~]# pkill mysqld [root@mysql-node1 ~]# pkill mysqld [root@mysql-node1 ~]# pkill mysqld 以上多种方式,都可以单独启动MySQL服务 mysqld_safe和mysqld一般是在临时维护时使用。 另外,从CentOS7系统开始,支持systemd直接调用mysqld的方式进行启动数据库。 4、MySQL数据库root密码忘记了? [root@mysql-node1 ~]# /etc/init.d/mysqld start Starting MySQL. SUCCESS! [root@mysql-node1 ~]# mysql -uroot -p Enter password: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) 跳过授权表登录数据库,不让它验证登录 把验证模块给关掉 --skip-grant-tables : 连接层关闭验证模块,所有验证表不加载。 --skip-networking : 连接层关闭tcp/ip协议,禁止远程访问。 第一步:挂维护页.html 第二步:关数据库。 第三步:跳过授权表。 [root@mysql-node1 ~]# /etc/init.d/mysqld stop Shutting down MySQL.. SUCCESS! [root@mysql-node1 ~]# mysqld_safe --skip-grant-tables --skip-networking & [2] 10317 [root@mysql-node1 ~]# 2019-06-01T05:29:02.130528Z mysqld_safe Logging to '/data/mysql/mysql-node1.err'. 2019-06-01T05:29:02.164585Z mysqld_safe Starting mysqld daemon with databases from /data/mysql [root@mysql-node1 ~]# [root@mysql-node1 ~]# netstat -tunlp | grep mysql [root@mysql-node1 ~]# ss -tunlp | grep mysql [root@mysql-node1 ~]# ps -ef | grep mysql root 9627 8031 0 13:06 pts/0 00:00:00 /bin/sh /app/mysql/bin/mysqld_safe mysql 9768 9627 0 13:06 pts/0 00:00:00 [mysqld] <defunct> root 10317 8031 0 13:29 pts/0 00:00:00 /bin/sh /app/mysql/bin/mysqld_safe --skip-grant-tables --skip-networking mysql 10488 10317 0 13:29 pts/0 00:00:00 /app/mysql/bin/mysqld --basedir=/app/mysql --datadir=/data/mysql --plugin-dir=/app/mysql/lib/plugin --user=mysql --skip-grant-tables --skip-networking --log-error=mysql-node1.err --pid-file=mysql-node1.pid --socket=/tmp/mysql.sock --port=3306 root 10532 8031 0 13:31 pts/0 00:00:00 grep --color=auto mysql [root@mysql-node1 ~]# ls -l /tmp/ total 4 srwxrwxrwx 1 mysql mysql 0 Jun 1 13:29 mysql.sock -rw------- 1 mysql mysql 6 Jun 1 13:29 mysql.sock.lock 密码为空或者随便输入都能登录数据库了这次 [root@mysql-node1 ~]# mysql -uroot -p123456 [root@mysql-node1 ~]# mysql -uroot -p [root@mysql-node1 ~]# mysql Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.20 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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. mysql> 但是远程不能登录数据库(没有端口) [root@mysql-node1 ~]# mysql -uroot -p -h 10.0.0.201 -P3306 Enter password: ERROR 2003 (HY000): Can't connect to MySQL server on '10.0.0.201' (111) [root@mysql-node1 ~]# mysql -uroot -p123456 -h 10.0.0.201 -P3306 mysql: [Warning] Using a password on the command line interface can be insecure. ERROR 2003 (HY000): Can't connect to MySQL server on '10.0.0.201' (111) 修改密码 [root@mysql-node1 ~]# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 5 Server version: 5.7.20 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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. mysql> alter user root@'localhost' identified by '456' ; ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement 不能正常去修改密码了,因为你的授权表根本就没有加载到内存,加载不了。 mysql> flush privileges ; Query OK, 0 rows affected (0.00 sec) mysql> alter user root@'localhost' identified by '456' ; Query OK, 0 rows affected (0.00 sec) 哎!先把授权表给加载一下,再来改密码,就可以了。 mysql> exit ; Bye [root@mysql-node1 ~]# pkill mysqld [root@mysql-node1 ~]# /etc/init.d/mysqld start Starting MySQL. SUCCESS! [root@mysql-node1 ~]# mysql -uroot -p123 mysql: [Warning] Using a password on the command line interface can be insecure. ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) [root@mysql-node1 ~]# mysql -uroot -p456 mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.20 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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. mysql> exit ; Bye [root@mysql-node1 ~]# 5、初始化配置方法 预编译 命令行 配置文件 初始化配置优先级:命令行 > 配置文件 > 预编译 我们验证一下 [root@mysql-node1 ~]# /etc/init.d/mysqld stop Shutting down MySQL.. SUCCESS! [root@mysql-node1 ~]# cat /etc/my.cnf [mysqld] user=mysql basedir=/app/mysql datadir=/data/mysql server_id=1 port=3306 socket=/tmp/mysql.sock [mysql] socket=/tmp/mysql.sock [root@mysql-node1 ~]# mysqld_safe --socket=/data/mysql/mysql.sock & [root@mysql-node1 ~]# ls -l /tmp/ total 0 [root@mysql-node1 ~]# ls -l /data/mysql/mysql.* srwxrwxrwx 1 mysql mysql 0 Jun 1 14:10 /data/mysql/mysql.sock -rw------- 1 mysql mysql 6 Jun 1 14:10 /data/mysql/mysql.sock.lock [root@mysql-node1 ~]# pkill mysqld 6、初始化配置文件 初始化配置文件的默认读取路径/etc/my.cnf 查看帮助结合grep命令 [root@mysql-node1 ~]# mysqld --verbose --help [root@mysql-node1 ~]# mysqld --verbose --help | grep my.cnf /etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf 他们的优先级是什么呢?后者覆盖前者。 默认情况下,MySQL启动时,会依次读取以上配置文件,如果有重复选项,会以最后一个设置的为准。 但是,如果启动时加入了--defaults-file=xxx时,以上所有的文件都不会读取了! 除非你明确告诉他,默认位置不要读这些文件了,读你自己定制的配置文件路径。 验证测试一下 [root@mysql-node1 ~]# vim ~/.my.cnf [mysqld] socket=/data/mysql/mysql.sock [root@mysql-node1 ~]# /etc/init.d/mysqld start Starting MySQL. SUCCESS! [root@mysql-node1 ~]# ls -l /tmp/ total 0 [root@mysql-node1 ~]# ls -l /data/mysql/mysql.* srwxrwxrwx 1 mysql mysql 0 Jun 1 14:32 /data/mysql/mysql.sock -rw------- 1 mysql mysql 6 Jun 1 14:32 /data/mysql/mysql.sock.lock [root@mysql-node1 ~]# cat /etc/systemd/system/mysqld.service [Unit] Description=MySQL Server Documentation=man:mysqld(8) Documentation=https://dev.mysql.com/doc/refman/en/using-systemd.html After=network.target After=syslog.target [Install] WantedBy=multi-user.target [Service] User=mysql Group=mysql ExecStart=/app/mysql/bin/mysqld --defaults-file=/etc/my.cnf LimitNOFILE = 5000 [root@mysql-node1 ~]# cp /etc/my.cnf my.txt [root@mysql-node1 ~]# vim my.txt [mysqld] user=mysql basedir=/app/mysql datadir=/data/mysql server_id=1 port=3306 socket=/tmp/my.sock [root@mysql-node1 ~]# pkill mysqld [root@mysql-node1 ~]# mysqld_safe --defaults-file=/root/my.txt & [2] 12254 [root@mysql-node1 ~]# 2019-06-01T06:44:48.766911Z mysqld_safe Logging to '/data/mysql/mysql-node1.err'. 2019-06-01T06:44:48.803444Z mysqld_safe Starting mysqld daemon with databases from /data/mysql [root@mysql-node1 ~]# [root@mysql-node1 ~]# ls -l /tmp/ total 4 srwxrwxrwx 1 mysql mysql 0 Jun 1 14:44 my.sock -rw------- 1 mysql mysql 6 Jun 1 14:44 my.sock.lock [root@mysql-node1 ~]# rm -rf my.txt [root@mysql-node1 ~]# rm -rf .my.cnf [root@mysql-node1 ~]# pkill mysqld [root@mysql-node1 ~]# pkill mysqld [root@mysql-node1 ~]# pkill mysqld 初始化配置文件的书写方式: [标签] 配置项=xxxxxx 标签类型:服务端的、客户端的 服务端标签: [mysqld] [mysqld_safe] [server] 客户端标签: [mysql] [mysqldump] [client] [root@mysql-node1 ~]# cat /etc/my.cnf [mysqld] user=mysql basedir=/app/mysql datadir=/data/mysql socket=/tmp/mysql.sock server_id=6 port=3306 log_error=/data/mysql/mysql.log [mysql] user=root password=456 socket=/tmp/mysql.sock prompt=MySQL [\\d]> \ [root@mysql-node1 ~]# /etc/init.d/mysqld start Starting MySQL.Logging to '/data/mysql/mysql.log'. SUCCESS! [root@mysql-node1 ~]# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.20 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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. MySQL [(none)]> select user() ; +----------------+ | user() | +----------------+ | root@localhost | +----------------+ 1 row in set (0.00 sec) MySQL [(none)]> exit ; Bye [root@mysql-node1 ~]# 7、MySQL多实例 [root@mysql-node1 ~]# mkdir -p /data/330{7,8,9}/data [root@mysql-node1 ~]# ls -l /data/ total 0 drwxr-xr-x 3 root root 18 Jun 1 15:51 3307 drwxr-xr-x 3 root root 18 Jun 1 15:51 3308 drwxr-xr-x 3 root root 18 Jun 1 15:51 3309 drwxr-x--- 6 mysql mysql 237 Jun 1 15:20 mysql [root@mysql-node1 ~]# cat > /data/3307/my.cnf <<EOF [mysqld] basedir=/app/mysql datadir=/data/3307/data socket=/data/3307/mysql.sock log_error=/data/3307/mysql.log port=3307 server_id=7 log_bin=/data/3307/mysql-bin EOF [root@mysql-node1 ~]# cat > /data/3308/my.cnf <<EOF [mysqld] basedir=/app/mysql datadir=/data/3308/data socket=/data/3308/mysql.sock log_error=/data/3308/mysql.log port=3308 server_id=8 log_bin=/data/3308/mysql-bin EOF [root@mysql-node1 ~]# cat > /data/3309/my.cnf <<EOF [mysqld] basedir=/app/mysql datadir=/data/3309/data socket=/data/3309/mysql.sock log_error=/data/3309/mysql.log port=3309 server_id=9 log_bin=/data/3309/mysql-bin EOF [root@mysql-node1 ~]# mv /etc/my.cnf /etc/my.cnf.bak [root@mysql-node1 ~]# mysqld --initialize-insecure --user=mysql --basedir=/app/mysql --datadir=/data/3307/data [root@mysql-node1 ~]# mysqld --initialize-insecure --user=mysql --basedir=/app/mysql --datadir=/data/3308/data [root@mysql-node1 ~]# mysqld --initialize-insecure --user=mysql --basedir=/app/mysql --datadir=/data/3309/data [root@mysql-node1 ~]# cp /etc/systemd/system/mysqld.service /etc/systemd/system/mysqld3307.service [root@mysql-node1 ~]# cp /etc/systemd/system/mysqld.service /etc/systemd/system/mysqld3308.service [root@mysql-node1 ~]# cp /etc/systemd/system/mysqld.service /etc/systemd/system/mysqld3309.service [root@mysql-node1 ~]# vim /etc/systemd/system/mysqld3307.service ExecStart=/app/mysql/bin/mysqld --defaults-file=/data/3307/my.cnf [root@mysql-node1 ~]# vim /etc/systemd/system/mysqld3308.service ExecStart=/app/mysql/bin/mysqld --defaults-file=/data/3308/my.cnf [root@mysql-node1 ~]# vim /etc/systemd/system/mysqld3309.service ExecStart=/app/mysql/bin/mysqld --defaults-file=/data/3309/my.cnf [root@mysql-node1 ~]# chown -R mysql:mysql /data [root@mysql-node1 ~]# ll -d /data drwxr-xr-x. 6 mysql mysql 55 Jun 1 15:51 /data [root@mysql-node1 ~]# systemctl enable mysqld3307.service [root@mysql-node1 ~]# systemctl enable mysqld3308.service [root@mysql-node1 ~]# systemctl enable mysqld3309.service [root@mysql-node1 ~]# systemctl start mysqld3307.service [root@mysql-node1 ~]# systemctl start mysqld3308.service [root@mysql-node1 ~]# systemctl start mysqld3309.service [root@mysql-node1 ~]# netstat -tunlp | grep mysql tcp6 0 0 :::3306 :::* LISTEN 5975/mysqld tcp6 0 0 :::3307 :::* LISTEN 6382/mysqld tcp6 0 0 :::3308 :::* LISTEN 6417/mysqld tcp6 0 0 :::3309 :::* LISTEN 6452/mysqld mysql -S /data/3307/mysql.sock -e "show variables like 'server_id';" mysql -S /data/3308/mysql.sock -e "show variables like 'server_id';" mysql -S /data/3309/mysql.sock -e "show variables like 'server_id';" [root@mysql-node1 ~]# mysql -S /data/3307/mysql.sock -e "show variables like 'server_id';" +---------------+-------+ | Variable_name | Value | +---------------+-------+ | server_id | 7 | +---------------+-------+ [root@mysql-node1 ~]# mysql -S /data/3308/mysql.sock -e "show variables like 'server_id';" +---------------+-------+ | Variable_name | Value | +---------------+-------+ | server_id | 8 | +---------------+-------+ [root@mysql-node1 ~]# mysql -S /data/3309/mysql.sock -e "show variables like 'server_id';" +---------------+-------+ | Variable_name | Value | +---------------+-------+ | server_id | 9 | +---------------+-------+ [root@mysql-node1 ~]# mv /etc/my.cnf.bak /etc/my.cnf 8、数据库启动不了 (1).先看日志 (2).看配置文件 (3).数据问题 (4).终极大招mysqld --defaults-file=xxxxxx -user=mysql &
day03-MySQL连接启动多实例
猜你喜欢
转载自www.cnblogs.com/zhouwanchun/p/10960592.html
今日推荐
周排行