- 二进制安装
tar xf mysql-5.5.61-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
ln -s /usr/local/mysql-5.5.61-linux-glibc2.12-x86_64 /usr/local/mysql
chown -R mysql.mysql /usr/local/mysql
mkdir -p /data/{3307,3308}/data
chown -R mysql.mysql /data/
- 添加环境变量
echo 'export PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/scripts' >> /etc/profile
- 初始化数据库
mysql_install_db --datadir=/data/3307/data --basedir=/usr/local/mysql --user=mysql
mysql_install_db --datadir=/data/3308/data --basedir=/usr/local/mysql --user=mysql
如果是设置mysql 5.7的多实例，则初始化时使用如下命令替换上面的mysql_install_db
mysqld --initialize-insecure -datadir=/data/3307/data --basedir=/usr/local/mysql --user=mysql
mysqld --initialize-insecure -datadir=/data/3307/data --basedir=/usr/local/mysql --user=mysql
- 生成配置my.conf的配置文件，注意master和slave的server-id不能重复
# cat /data/3307/my.cnf | grep -Ev "^#|^$"
[client]
port = 3307
socket = /data/3307/data/mysql.sock
[mysqld]
datadir = /data/3307/data
port = 3307
socket = /data/3307/data/mysql.sock
skip-external-locking
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128K
server-id = 1
log-bin=mysql-bin
binlog_format=mixed
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
[mysqlhotcopy]
interactive-timeout
[mysqld_safe]
log-error=/data/3307/data/mysqld.log
pid-file=/data/3307/data/mysqld.pid
# cat /data/3308/my.cnf | grep -Ev "^#|^$"
[client]
port = 3308
socket = /data/3308/data/mysql.sock
[mysqld]
datadir = /data/3308/data
port = 3308
socket = /data/3308/data/mysql.sock
skip-external-locking
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128K
server-id = 3
log-bin=mysql-bin
binlog_format=mixed
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
[mysqlhotcopy]
interactive-timeout
[mysqld_safe]
log-error=/data/3308/data/mysqld.log
pid-file=/data/3308/data/mysqld.pid
- 生成多个实例的系统启动文件：
# cat /usr/lib/systemd/system/mysqld-3307.service | grep -Ev "^#|^$"
[Unit]
Description=MySQL Community Server
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
Alias=mysql.service
[Service]
User=mysql
Group=mysql
PermissionsStartOnly=true
ExecStart=/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/3307/my.cnf
TimeoutSec=600
Restart=always
PrivateTmp=false
# cat /usr/lib/systemd/system/mysqld-3308.service | grep -Ev "^#|^$"
[Unit]
Description=MySQL Community Server
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
Alias=mysql.service
[Service]
User=mysql
Group=mysql
PermissionsStartOnly=true
ExecStart=/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/3308/my.cnf
TimeoutSec=600
Restart=always
PrivateTmp=false
- 启动服务
systemctl start mysqld-3307 mysqld-3308
- 登录到3307设置为master
mysql -uroot -p -h 127.0.0.1 -P 3307
mysql> grant replication slave on *.* to 'fbo'@'%' identified by '123456';
Query OK, 0 rows affected (0.00 sec)
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 248 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
- 登录到3308设置为slave
由Slave_IO_Running，Slave_SQL_Running判断是否成功；
mysql> change master to master_host='192.168.75.101',master_port=3307,master_user='fbo',master_password='123456',master_log_file='mysql-bin.000001',master_log_pos=248;
Query OK, 0 rows affected (0.00 sec)
mysql> slave start
-> ;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.75.101
Master_User: fbo
Master_Port: 3307
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 248
Relay_Log_File: mysqld-relay-bin.000002
Relay_Log_Pos: 253
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 248
Relay_Log_Space: 410
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
1 row in set (0.00 sec)
