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    CentOS7.5使用mysql_multi方式安装MySQL5.7.28多实例(详解)

    因使用源码安装的MySQL5.7.28多实例,在导入数据库时会出现问题,所以重新研究使用mysql_multi的方法来管理多实例,经过测试环境验证之后,在各方面使用上特别在备份还原上,没有报MySQL5.7.28多实例的问题,踩了不少坑,这里我将我的部署过程分享下,如果在哪里出问题的,还请多多指正与指导,谢谢!!

    参考文章:Centos7.5安装mysql5.7.24二进制包方式部署

    https://www.jb51.net/article/151867.htm

    本从就直接从2.7章节开始安装mysql多实例,具体部署过程如下:

    2.7 安装mysql多实例

    2.7.1. 创建软件安装目录(部署路径请根据实际修改)

    [root@~]# mkdir -pv /data/mysql/{3306,3307}
    [root@~]# mkdir -v /data/mysql/3306/{logs,data,binlog}
    [root@~]# mkdir -v /data/mysql/3307/{logs,data,binlog}

    2.7.2. MySQL安装包下载

    [root@~]# cd /opt
    [root@~]# wget -c https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz
    [root@~]# tar zxvf mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz
    [root@~]# mv mysql-5.7.28-linux-glibc2.12-x86_64 /usr/local/mysql
    [root@~]# chown -R mysql:mysql /usr/local/mysql
    [root@~]# chown -R mysql:mysql /data

    2.7.3. MySQL参数配置

     配置my.cnf参数文件

    (1)server_id=3306与server_id=3307数值请根据实际配置,注意配置的id值与局域网内其他各实例所配置的数值不可以冲突;

    (2)max_connections=1000配置MySQL数据库的最大连接数,根据实际需要配置,其他参数的优化根据实际需要修改或添

    加;

    (3)配置文件全部内容如下

    [root@~]# vim /etc/my.cnf
    [mysqld_multi]
    mysqld = /usr/local/mysql/bin/mysqld
    mysqladmin = /usr/local/mysql/bin/mysqladmin
    log = /data/mysql/mysqld_multi.log 
    #user=root
    #pass=
    
    [mysql]
    prompt="\u@jsshapp \R:\m:\s [\d]> "
    no-auto-rehash
    
    [mysqld3306]
    user = mysql
    port = 3306
    symbolic-links = 0
    #basedir = /usr/
    datadir = /data/mysql/3306/data
    socket = /data/mysql/3306/mysql3306.sock
    pid-file = /data/mysql/3306/mysqld3306.pid
    server_id = 3306
    character_set_server = utf8
    max_connections = 1000
    skip_name_resolve = 1
    open_files_limit = 65536
    thread_cache_size = 64
    table_open_cache = 4096
    table_definition_cache = 1024
    table_open_cache_instances = 64
    max_prepared_stmt_count = 1048576
    explicit_defaults_for_timestamp = true
    log_timestamps = system
    
    binlog_format = row
    log_bin = /data/mysql/3306/binlog/mysql-bin
    binlog_rows_query_log_events = on
    expire_logs_days = 7
    binlog_cache_size = 4M
    max_binlog_cache_size = 2G
    max_binlog_size = 1G
    sync_binlog = 1
    log_bin_trust_function_creators = 1
    
    slow_query_log = on
    slow_query_log_file = /data/mysql/3306/data/slow.log
    log-error = /data/mysql/3306/logs/error.log
    log_queries_not_using_indexes = on
    long_query_time = 1.000000
    
    gtid_mode = on
    enforce_gtid_consistency = on
    
    default_storage_engine = innodb
    default_tmp_storage_engine = innodb
    innodb_data_file_path = ibdata1:12M:autoextend:max:2000M
    innodb_temp_data_file_path = ibtmp1:12M:autoextend:max:2000M
    innodb_buffer_pool_filename = ib_buffer_pool
    innodb_log_files_in_group = 3
    innodb_log_file_size = 512M
    innodb_online_alter_log_max_size = 1024M
    innodb_open_files = 4096
    innodb_page_size = 16k
    innodb_thread_concurrency = 0
    innodb_read_io_threads = 4
    innodb_write_io_threads = 4
    innodb_purge_threads = 4
    innodb_page_cleaners = 4
    innodb_print_all_deadlocks = on
    innodb_lock_wait_timeout = 20
    innodb_spin_wait_delay = 128
    innodb_autoinc_lock_mode = 2
    innodb_io_capacity = 200
    innodb_io_capacity_max = 2000
    #innodb_flush_neighbors = 
    innodb_log_buffer_size = 8M
    innodb_flush_log_at_timeout = 1
    innodb_flush_log_at_trx_commit = 2
    innodb_buffer_pool_size = 1024M
    innodb_buffer_pool_instances = 4
    autocommit = 1
    innodb_buffer_pool_dump_pct = 25
    innodb_buffer_pool_dump_at_shutdown = ON
    innodb_buffer_pool_load_at_startup = ON
    
    [mysqld3307]
    user = mysql
    port = 3307
    symbolic-links = 0
    lower_case_table_names = 1
    #basedir = /usr/
    datadir = /data/mysql/3307/data
    socket = /data/mysql/3307/mysql3307.sock
    pid-file = /data/mysql/3307/mysqld3307.pid
    server_id = 3307
    character_set_server = utf8
    max_connections = 1000
    skip_name_resolve = 1
    open_files_limit = 65536
    thread_cache_size = 64
    table_open_cache = 4096
    table_definition_cache = 1024
    table_open_cache_instances = 64
    max_prepared_stmt_count = 1048576
    explicit_defaults_for_timestamp = true
    log_timestamps = system
    
    binlog_format = row
    log_bin = /data/mysql/3307/binlog/mysql-bin
    binlog_rows_query_log_events = on
    expire_logs_days = 7
    binlog_cache_size = 4M
    max_binlog_cache_size = 2G
    max_binlog_size = 1G
    sync_binlog = 1
    
    slow_query_log = on
    slow_query_log_file = /data/mysql/3307/data/slow.log
    log-error = /data/mysql/3307/logs/error.log
    log_queries_not_using_indexes = on
    long_query_time = 1.000000
    
    gtid_mode = on
    enforce_gtid_consistency = on
    
    default_storage_engine = innodb
    default_tmp_storage_engine = innodb
    innodb_data_file_path = ibdata1:12M:autoextend:max:2000M
    innodb_temp_data_file_path = ibtmp1:12M:autoextend:max:2000M
    innodb_buffer_pool_filename = ib_buffer_pool
    innodb_log_files_in_group = 3
    innodb_log_file_size = 512M
    innodb_online_alter_log_max_size = 1024M
    innodb_open_files = 4096
    innodb_page_size = 16k
    innodb_thread_concurrency = 0
    innodb_read_io_threads = 4
    innodb_write_io_threads = 4
    innodb_purge_threads = 4
    innodb_page_cleaners = 4
    innodb_print_all_deadlocks = on
    innodb_lock_wait_timeout = 20
    innodb_spin_wait_delay = 128
    innodb_autoinc_lock_mode = 2
    innodb_io_capacity = 200
    innodb_io_capacity_max = 2000
    #innodb_flush_neighbors = 
    innodb_log_buffer_size = 8M
    innodb_flush_log_at_timeout = 1
    innodb_flush_log_at_trx_commit = 2
    innodb_buffer_pool_size = 1024M
    innodb_buffer_pool_instances = 4
    autocommit = 1
    innodb_buffer_pool_dump_pct = 25
    innodb_buffer_pool_dump_at_shutdown = ON
    innodb_buffer_pool_load_at_startup = ON
    
    [mysqldump]
    quick
    max_allowed_packet = 32M

    2.7.4. 配置MySQL环境变量

    [root@~]# echo 'export PATH=/usr/local/mysql/bin:$PATH' >> /etc/profile
    [root@~]# tail -1 /etc/profile
    [root@~]# source /etc/profile

    2.7.5. testone实例初始化

     操作实例初始化

    [root@~]# mysqld --defaults-file=/etc/my.cnf --initialize --basedir=/usr/local/mysql/ --user=mysql --datadir=/data/mysql/3306/data/ > /tmp/3306.log 2>1
    [root@~]# tail -100f /tmp/3306.log
    ---使用tail命令查看初始化日志,有出现如下内容,即表示初始化完成(其中#5+t+xYW+t?即为root用户的临时密码)
    A temporary password is generated for root@localhost: #5+t+xYW+t?

     生成ssl文件

    [root@~]# mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql/3306/data

     启动testone实例

    [root@~]# mysqld_multi start 3306
    [root@~]# tail -100f /data/mysql/3306/logs/error.log 
    ----使用tail命令查看启动日志,有出现即表示启动成功
    
    Version: '5.7.28-log' socket: '/data/mysql/3306/mysql3306.sock' port: 3306 MySQL Community Server (GPL)
    

     修改root密码

    [root@~]# less /tmp/3306.log | grep 'A temporary password'
    [root@~]# mysql -uroot -p -S /data/mysql/3306/mysql3306.sock
    Enter password:
    mysql> alter user 'root'@'localhost' identified by '统一密码';
    mysql> flush privileges;
    mysql> exit;

     验证 testone root用户统一密码(界面正常输出information_schema内容表示正常)

    [root@~]# mysql -uroot -p -S /data/mysql/3306/mysql3306.sock -e "show databases;" | grep information_schema
    Enter password:

     修改my.cnf配置文件,将修改的统一密码,添加到配置文件中

    [root@~]# sed -i "s@^#user=root@user=root@g" /etc/my.cnf
    [root@~]# sed -i "s@^#pass=@pass=统一密码@g" /etc/my.cnf
    [root@~]# cat /etc/my.cnf | grep pass= ---使用cat命令查看配置文件pass字段输出的结果是否一致

     停止testone实例

    [root@~]# mysqld_multi stop 3306
    [root@~]# netstat -tnlp|grep 3306 ---输入结果为空表示服务停止正常

    2.7.6. testtwo实例初始化

     操作实例初始化

    [root@~]# mysqld --defaults-file=/etc/my.cnf --initialize --basedir=/usr/local/mysql/ --user=mysql --datadir=/data/mysql/3307/data/ > /tmp/3307.log 2>1
    [root@~]# tail -100f /tmp/3307.log
    ---使用tail命令查看初始化日志,有出现如下内容,即表示初始化完成(其中-pn>t;Ye)Ay6=I即为root用户的临时密码)
    A temporary password is generated for root@localhost: -pn>t;Ye)Ay6=I
     生成ssl文件
    
    [root@~]# mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql/3307/data

     启动testwo实例

    [root@~]# mysqld_multi start 3307

    ----使用tail命令查看启动日志,有出现即表示启动成功

    [root@~]# tail -100f /data/mysql/3307/logs/error.log
    Version: '5.7.28-log' socket: '/data/mysql/3307/mysql3307.sock' port: 3307 MySQL Community Server (GPL)
    

     修改root密码

    [root@~]# less /tmp/3307.log|grep 'A temporary password'
    [root@~]# mysql -uroot -p -S /data/mysql/3307/mysql3307.sock
    Enter password:
    mysql> alter user 'root'@'localhost' identified by '统一密码';
    mysql> flush privileges;
    mysql> exit;

     验证 testtwo root用户统一密码(界面正常输出information_schema内容表示正常)

    [root@~]# mysql -uroot -p -S /data/mysql/3307/mysql3307.sock -e "show databases;" | grep information_schema

    Enter password:

     停止testtwo实例

    [root@~]# mysqld_multi stop 3307
    [root@~]# netstat -tnlp|grep 3307 ---输入结果为空表示服务停止正常

    2.7.7. mysqld_multi多实例管理命令

     启动全部实例

    [root@~]# mysqld_multi start

     停止单个实例

    [root@~]# mysqld_multi stop 3306
    [root@~]# mysqld_multi stop 3307

     启动单个实例

    [root@~]# mysqld_multi start 3306
    [root@~]# mysqld_multi start 3307

     查看全部实例的状态(is running)

    [root@~]# mysqld_multi report
    Reporting MySQL servers
    MySQL server from group: mysqld3306 is running
    MySQL server from group: mysqld3307 is running
    
    

     查看单个实例状态

    [root@~]# mysqld_multi report 3306
    Reporting MySQL servers
    MySQL server from group: mysqld3306 is running
    [root@~]# mysqld_multi report 3307
    Reporting MySQL servers
    MySQL server from group: mysqld3307 is running

     停止全部实例

    [root@~]# mysqld_multi stop

    2.7.8. 数据导入

    (1)将待导入的数据库脚本(test.sql、testtwo.sql)文件(名称根据实际情况操作)上传至/data/路径下

    (2)使用命令确认两实例已经处于运行状态

    [root@~]# mysqld_multi report
    Reporting MySQL servers
    MySQL server from group: mysqld3306 is running
    MySQL server from group: mysqld3307 is running

    (3)进入testone的mysql数据库创建testone数据库实例、用户名及密码并导入数据

    [root@~]# cd /data/
    [root@~]# mysql -uroot -p -S /data/mysql/3306/mysql3306.sock
    Enter password: 
    mysql>create database testone default character set utf8 collate utf8_bin;
    mysql> grant select,insert,update,delete,create,alter,execute on testone.* to 'testone'@'%' identified by '密码';
    mysql> flush privileges;
    mysql> exit
    [root@~]# mysql -uroot -p -S /data/mysql/3306/mysql3306.sock testone  /data/test.sql

    (3)进入testtwo的mysql数据库,创建testtwo服务数据库实例、用户名与密码并导入数据

    [root@~]# mysql -uroot -p -S /data/mysql/3307/mysql3307.sock
    Enter password:
    mysql> create database testtwo default character set utf8 collate utf8_bin;
    mysql> grant select,insert,update,delete,create,alter,execute on testtwo.* to 'testtwo'@'%' identified by '密码';
    mysql> flush privileges;
    mysql> exit
    [root@~]# mysql -uroot -p -S /data/mysql/3307/mysql3307.sock testtwo  /data/testtwo.sql

    2.7.9. 防火墙配置

     根据实际要求,添加开放端口

    [root@~]# firewall-cmd --zone=public --add-port=3306/tcp --permanent
    [root@~]# firewall-cmd --zone=public --add-port=3307/tcp --permanent

     重新载入

    [root@~]# firewall-cmd --reload

    总结

    以上所述是小编给大家介绍的CentOS7.5使用mysql_multi方式安装MySQL5.7.28多实例,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持!如果你觉得本文对你有帮助,欢迎转载,烦请注明出处,谢谢!

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    CentOS7.5使用mysql_multi方式安装MySQL5.7.28多实例(详解) CentOS7.5,使用,mysql,multi,方式,