详细介绍centos编译安装mysql5.6及安装多个mysql的示例代码分享

7、修改配置文件（my.cnf）如下行，分别放入3306、3307目录当中；

123456789 [root@mysql 3306]# vim my.cnf 
[client]
port      = 3306
socket     = /data/3306/mysql.sock
[mysqld]
port      = 3306
socket     = /data/3306/mysql.sock
datadir     = /data/3306
server-id    = 3306

8、初始化数据库；

注意：初始化数据库时需要指定不同的数据目录

123 [root@mysql mysql-5.5.32]# cd /usr/local/mysql/
[root@mysql mysql]# scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/3306
[root@mysql mysql]# scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/3307

9、启动多实例，启动脚本可以加入到开机自启动文件中。

12 [root@mysql mysql]# /usr/local/mysql/bin/mysqld_safe --defaults-file=/data/3306/my.cnf 2>&1 >/dev/null &  
[root@mysql mysql]# /usr/local/mysql/bin/mysqld_safe --defaults-file=/data/3307/my.cnf 2>&1 >/dev/null &

9.1、查看端口；

12345678 [root@mysql mysql]# netstat -tunlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address        Foreign Address       State    PID/Program name  
tcp    0   0 0.0.0.0:3307        0.0.0.0:*          LISTEN   11621/mysqld    
tcp    0   0 0.0.0.0:22         0.0.0.0:*          LISTEN   1266/sshd      
tcp    0   0 0.0.0.0:3306        0.0.0.0:*          LISTEN   11338/mysqld    
tcp    0   0 :::22            :::*            LISTEN   1266/sshd      
udp    0   0 0.0.0.0:68         0.0.0.0:*                969/dhclient

10、登录多实例数据库

12 [root@mysql mysql]# /usr/local/mysql/bin/mysql -u root -p -P 3306 -S /data/3306/mysql.sock
[root@mysql mysql]# /usr/local/mysql/bin/mysql -u root -p -P 3307 -S /data/3307/mysql.sock

11、关闭mysql多实例方式

12 [root@mysql mysql]# /usr/local/mysql/bin/mysqladmin -u root -p -P 3306 -S /data/3306/mysql.sock shutdown  
[root@mysql mysql]# /usr/local/mysql/bin/mysqladmin -u root -p -P 3307 -S /data/3307/mysql.sock shutdown
cat /etc/my.cnf 
[mysqld1]
datadir=/data/mysql
socket=/tmp/mysql.sock
user=mysql
symbolic-links=0
skip-name-resolve
server-id=1221
max_connections = 2000
binlog-ignore-db=mysql
binlog-ignore-db=test
binlog-ignore-db=information_schema
binlog-ignore-db=performance_schema
innodb_buffer_pool_size = 2G
innodb_additional_mem_pool=16M
innodb_log_file_size=256M
innodb_flush_log_at_trx_commit=2
character_set_server=utf8
collation_server = utf8_general_ci
replicate_ignore_db = mysql
slave-skip-errors=all
relay_log=/data/mysql/
[mysqld2]
port=3307
server-id=1222
log-error=/tmp/mysqld2.log
datadir=/data/mysql_live
socket=/tmp/mysql2.sock
user=mysql
symbolic-links=0
skip-name-resolve
character_set_server=utf8
collation_server = utf8_general_ci
max-connections=500
default-storage-engine=INNODB
innodb_file_per_table
log-bin=mysql-bin
relay-log-info-repository=TABLE
master-info-repository=TABLE
expire_logs_days=10
binlog_format=ROW
transaction-isolation=READ-COMMITTED
binlog-ignore-db=mysql
binlog-ignore-db=test
binlog-ignore-db=information_schema
binlog-ignore-db=performance_schema
slow_query_log=TRUE
slow_query_log_file=/tmp/mysqld_slow_query2.log
long_query_time=3
replicate_ignore_db = mysql
slave-skip-errors=all
[mysqld3]
server-id=1223
port=3308
log-error=/tmp/mysqld3.log
datadir=/data/mysql
socket=/tmp/mysql3.sock
user=mysql
symbolic-links=0
skip-name-resolve
character_set_server=utf8
collation_server = utf8_general_ci
max-connections=500
default-storage-engine=INNODB
innodb_file_per_table
log-bin=mysql-bin
relay-log-info-repository=TABLE
master-info-repository=TABLE
expire_logs_days=10
binlog_format=ROW
transaction-isolation=READ-COMMITTED
binlog-ignore-db=mysql
binlog-ignore-db=test
binlog-ignore-db=information_schema
binlog-ignore-db=performance_schema
slow_query_log=TRUE
slow_query_log_file=/tmp/mysqld_slow_query3.log
long_query_time=3
replicate_ignore_db = mysql
slave-skip-errors=all
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/data/mysql/mysqld.pid

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