这次给大家带来mysqld_multi部署单机详解,mysqld_multi部署单机的注意事项有哪些,下面就是实战案例,一起来看一下。
前言
大家应该都有所体会,随着硬件层面的发展,linux系统多核已经是普通趋势,而mysql是单进程多线程,所以先天上对多进程的利用不是很高,虽然5.6版本已经在这方面改进很多,但是也没有达到100%,所以为了充分的利用系统资源,mysql有自己的补充,那就是可以部署多实例,一个实例一个端口。
mysqld_multi设计用于管理在同一台机器上运行的多个mysqld进程,这些进程使用不同的socket文件并监听在不同的端口上。mysqld_multi可以批量启动、关闭、或者报告这些mysqld进程的状态。
下面话不多说了,来一起看看详细的介绍吧。
一、mysql编译安装:cd /usr/local/src
wget http://mirrors.sohu.com/mysql/mysql-5.6/mysql-5.6.35-linux-glibc2.5-x86_64.tar.gz
tar zxvf mysql-5.6.35-linux-glibc2.5-x86_64.tar.gz
mv mysql-5.6.35-linux-glibc2.5-x86_64 /usr/local/mysql
cd /usr/local/mysql
useradd mysql
mkdir -p /data/mysql
chown -r mysql:mysql /data/mysql
./scripts/mysql_install_db --user=mysql --datadir=/data/mysql
cp support-files/my-default.cnf /etc/my.cnf
cp support-files/mysql.server /etc/init.d/mysqld
二、准备第一个多实例33072.1 创建目录:
mkdir /usr/local/mysql3307
chown -r mysql.mysql /usr/local/mysql3307/
mkdir -p /data/mysql3307
chown -r mysql.mysql /data/mysql3307
mkdir -p /home/data/mysql3307/binlog
chown -r mysql.mysql /home/data/mysql3307
2.2 配置文件
[root@zhdya01 ~]# vim /etc/my.cnf
# for advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
# *** do not edit this file. it's a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of mysql.
[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin =/usr/local/mysql/bin/mysqladmin
log =/var/log/mysqld_multi.log
[mysqld1]
socket = /usr/local/mysql3307/mysql.sock
port = 3307
pid-file = /usr/local/mysql3307/mysql.pid
datadir = /data/mysql3307
log_bin=/home/data/mysql3307/binlog
server-id = 1
innodb_buffer_pool_size = 128m
innodb_flush_log_at_trx_commit = 0
2.3 初始化数据库
/usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql3307
三、准备第二个多实例33083.1 创建目录:
mkdir /usr/local/mysql3308
chown -r mysql.mysql /usr/local/mysql3308/
mkdir -p /data/mysql3308
chown -r mysql.mysql /data/mysql3308
mkdir -p /home/data/mysql3308/binlog
chown -r mysql.mysql /home/data/mysql3308
3.2 配置文件
[root@zhdya01 ~]# vim /etc/my.cnf
# for advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
# *** do not edit this file. it's a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of mysql.
[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin =/usr/local/mysql/bin/mysqladmin
log =/var/log/mysqld_multi.log
[mysqld1]
socket = /usr/local/mysql3307/mysql.sock
port = 3307
pid-file = /usr/local/mysql3307/mysql.pid
datadir = /data/mysql3307
log_bin=/home/data/mysql3307/binlog
server-id = 1
innodb_buffer_pool_size = 128m
innodb_flush_log_at_trx_commit = 0
[mysqld2]
socket = /usr/local/mysql3308/mysql.sock
port = 3308
pid-file = /usr/local/mysql3308/mysql.pid
datadir = /data/mysql3308
log_bin=/home/data/mysql3308/binlog
server-id = 2
innodb_buffer_pool_size = 128m
innodb_flush_log_at_trx_commit = 0
3.3 初始化数据库
/usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql3308
四、启动多实例/etc/init.d/mysqld start
mysqld_multi --defaults-extra-file=/etc/my.cnf start 1,2
[root@zhdya01 bin]# !net
netstat -lntp -lntp
active internet connections (only servers)
proto recv-q send-q local address foreign address state pid/program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* listen 1241/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* listen 2087/master
tcp6 0 0 :::3306 :::* listen 4406/mysqld
tcp6 0 0 :::3307 :::* listen 4197/mysqld
tcp6 0 0 :::3308 :::* listen 3359/mysqld
tcp6 0 0 :::8080 :::* listen 2222/java
tcp6 0 0 :::22 :::* listen 1241/sshd
tcp6 0 0 ::1:25 :::* listen 2087/master
五、查看启动状态[root@zhdya01 bin]# mysqld_multi --defaults-extra-file=/etc/my.cnf report
reporting mysql servers
mysql server from group: mysqld1 is running
mysql server from group: mysqld2 is running
六、停止多实例[root@zhdya01 bin]# mysqld_multi --defaults-extra-file=/etc/my.cnf stop 1,2
[root@zhdya01 bin]# mysqld_multi --defaults-extra-file=/etc/my.cnf report
reporting mysql servers
mysql server from group: mysqld1 is not running
mysql server from group: mysqld2 is not running
七、各自登录mysql实例[root@zhdya01 bin]# mysql --socket=/usr/local/mysql3307/mysql.sock
welcome to the mysql monitor. commands end with ; or \g.
your mysql connection id is 1
server version: 5.6.35-log mysql community server (gpl)
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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>
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以上就是mysqld_multi部署单机详解的详细内容。