centos7配置mariadb一主多从(yum安装版)
centos安装maraidb一主多从
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- 一、安装ntp服务进行时间同步
- 二、安装mariadb（即mysql服务）
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- master、slave1、slave2
- 三、更改主从相关配置文件
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- master
- slave1
- slave2
- 四、配置主从
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- master
- slave1
- slave2
- 五、检测主从是否同步
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| 操作系统版本 | mysq版本 | 身份 | ip地址 |
|---|---|---|---|
| centos7.4-1 | mariadb-5.5.56 | master | 192.168.19.201 |
| centos7.4-2 | mariadb-5.5.56 | slave1 | 192.168.19.202 |
| centos7.4-3 | mariadb-5.5.56 | slave2 | 192.168.19.203 |
一、安装ntp服务进行时间同步
master、slave1、slave2
[root@localhost ~]# yum -y install ntpdate
总下载量：87 k
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
ntpdate-4.2.6p5-29.el7.centos.2.x86_64.rpm | 87 kB 00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在更新 : ntpdate-4.2.6p5-29.el7.centos.2.x86_64 1/2
清理 : ntpdate-4.2.6p5-25.el7.centos.2.x86_64 2/2
验证中 : ntpdate-4.2.6p5-29.el7.centos.2.x86_64 1/2
验证中 : ntpdate-4.2.6p5-25.el7.centos.2.x86_64 2/2
更新完毕:
ntpdate.x86_64 0:4.2.6p5-29.el7.centos.2
完毕！
[root@localhost ~]# ntpdate time1.aliyun.com
28 Jul 13:09:35 ntpdate[15685]: step time server 203.107.6.88 offset -28507.029087 sec
三台服务器保持时间同步即可
二、安装mariadb（即mysql服务）
master、slave1、slave2
[root@localhost ~]# yum -y install mariadb mariadb-server
[root@localhost ~]# systemctl start mariadb
[root@localhost ~]# netstat -anptu | grep 3306
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 2549/mysqld
[root@localhost ~]# mysqladmin -uroot -p password 123123;
Enter password: 回车即可
[root@localhost ~]# mysql -uroot -p123123;
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.68-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]>
MariaDB [(none)]>exit
三、更改主从相关配置文件
master
添加配置文件内容：
server-id=1
log-bin=master-log
skip_name_reslove=ON
innodb_file_per_table=ON
[root@localhost ~]# vim /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
server-id=1
log-bin=master-log
skip_name_resolve=ON
innodb_file_per_table=ON
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
[root@localhost ~]# systemctl restart mariadb
[root@localhost ~]# systemctl status mariadb
● mariadb.service - MariaDB database server
Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled)
Active: active (running) since 四 2022-07-28 13:39:36 CST; 40min ago
Process: 2340 ExecStartPost=/usr/libexec/mariadb-wait-ready $MAINPID (code=exited, status=0/SUCCESS)
Process: 2308 ExecStartPre=/usr/libexec/mariadb-prepare-db-dir %n (code=exited, status=0/SUCCESS)
Main PID: 2339 (mysqld_safe)
CGroup: /system.slice/mariadb.service
├─2339 /bin/sh /usr/bin/mysqld_safe --basedir=/usr
└─2549 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/m...
7月 28 13:39:34 localhost.localdomain systemd[1]: Starting MariaDB datab...
7月 28 13:39:34 localhost.localdomain mariadb-prepare-db-dir[2308]: Data...
7月 28 13:39:34 localhost.localdomain mariadb-prepare-db-dir[2308]: If t...
7月 28 13:39:34 localhost.localdomain mysqld_safe[2339]: 220728 13:39:34...
7月 28 13:39:34 localhost.localdomain mysqld_safe[2339]: 220728 13:39:34...
7月 28 13:39:36 localhost.localdomain systemd[1]: Started MariaDB databa...
Hint: Some lines were ellipsized, use -l to show in full.
slave1
添加配置文件内容：
server-id=2
relay-log=slave1-log
skip_name_resolve=ON
innodb_file_per_table=ON
[root@localhost ~]# vim /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
server-id=2
relay-log=slave1-log
skip_name_resolve=ON
innodb_file_per_table=ON
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
[root@localhost ~]# systemctl restart mariadb
[root@localhost ~]# systemctl status mariadb
● mariadb.service - MariaDB database server
Loaded: loaded (/usr/lib/systemd/system/mariadb.service; disabled; vendor preset: disabled)
Active: active (running) since 四 2022-07-28 13:42:30 CST; 52min ago
Process: 16155 ExecStartPost=/usr/libexec/mariadb-wait-ready $MAINPID (code=exited, status=0/SUCCESS)
Process: 16119 ExecStartPre=/usr/libexec/mariadb-prepare-db-dir %n (code=exited, status=0/SUCCESS)
Main PID: 16154 (mysqld_safe)
CGroup: /system.slice/mariadb.service
├─16154 /bin/sh /usr/bin/mysqld_safe --basedir=/usr
└─16368 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/...
7月 28 13:42:28 localhost.localdomain systemd[1]: Starting MariaDB datab...
7月 28 13:42:28 localhost.localdomain mariadb-prepare-db-dir[16119]: Dat...
7月 28 13:42:28 localhost.localdomain mysqld_safe[16154]: 220728 13:42:2...
7月 28 13:42:29 localhost.localdomain mysqld_safe[16154]: 220728 13:42:2...
7月 28 13:42:30 localhost.localdomain systemd[1]: Started MariaDB databa...
Hint: Some lines were ellipsized, use -l to show in full.
slave2
添加配置文件内容：
server-id=3
relay-log=slave2-log
skip_name_resolve=ON
innodb_file_per_table=ON
[root@localhost ~]# vim /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
server-id=3
relay-log=slave2-log
skip_name_resolve=ON
innodb_file_per_table=ON
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
[root@localhost ~]# systemctl restart mariadb
[root@localhost ~]# systemctl status mariadb
● mariadb.service - MariaDB database server
Loaded: loaded (/usr/lib/systemd/system/mariadb.service; disabled; vendor preset: disabled)
Active: active (running) since 四 2022-07-28 13:47:28 CST; 46min ago
Process: 16373 ExecStartPost=/usr/libexec/mariadb-wait-ready $MAINPID (code=exited, status=0/SUCCESS)
Process: 16338 ExecStartPre=/usr/libexec/mariadb-prepare-db-dir %n (code=exited, status=0/SUCCESS)
Main PID: 16372 (mysqld_safe)
CGroup: /system.slice/mariadb.service
├─16372 /bin/sh /usr/bin/mysqld_safe --basedir=/usr
└─16586 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/...
7月 28 13:47:26 localhost.localdomain systemd[1]: Starting MariaDB datab...
7月 28 13:47:26 localhost.localdomain mariadb-prepare-db-dir[16338]: Dat...
7月 28 13:47:26 localhost.localdomain mysqld_safe[16372]: 220728 13:47:2...
7月 28 13:47:26 localhost.localdomain mysqld_safe[16372]: 220728 13:47:2...
7月 28 13:47:28 localhost.localdomain systemd[1]: Started MariaDB databa...
Hint: Some lines were ellipsized, use -l to show in full.
[root@localhost ~]# mysql -uroot -p123123
四、配置主从
1.创建并授权主从同步用户
2.查看master状态并记住bin-log文件名称和POS号
3.配置两台从中指定主的ip地址以及登录用户和bin-log文件
4.开启主从模式并查看状态
master
[root@localhost ~]# mysql -uroot -p123123;
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.56-MariaDB MariaDB Server
Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> grant replication slave,replication client on *.* to 'slave'@'192.168.19.%' identified by "123123";
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> show master status\G;
*************************** 1. row ***************************
File: master-log.000001
Position: 493
Binlog_Do_DB:
Binlog_Ignore_DB:
1 row in set (0.00 sec)
ERROR: No query specified
slave1
[root@localhost ~]# mysql -uroot -p123123
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.56-MariaDB MariaDB Server
Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> change master to
-> master_host="192.168.19.201",
-> master_user="slave",
-> master_password="123123",
-> master_log_file="master-log.000001",
-> master_log_pos=493;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> start slave;
Query OK, 0 rows affected (0.01 sec)
MariaDB [(none)]> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.19.201
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-log.000001
Read_Master_Log_Pos: 493
Relay_Log_File: slave1-log.000002
Relay_Log_Pos: 530
Relay_Master_Log_File: master-log.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: 493
Relay_Log_Space: 819
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)
ERROR: No query specified
slave2
[root@localhost ~]# mysql -uroot -p123123
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.56-MariaDB MariaDB Server
Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> change master to
->master_host="192.168.19.201",
->master_user="slave",
->master_passowrd="123123",
->master_passos=493;
Query OK, 0 rows affected (0.01 sec)
MariaDB [(none)]> start slave;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.19.201
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-log.000001
Read_Master_Log_Pos: 493
Relay_Log_File: slave2-log.000002
Relay_Log_Pos: 530
Relay_Master_Log_File: master-log.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: 493
Relay_Log_Space: 819
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)
ERROR: No query specified
五、检测主从是否同步
master上操作，创建数据库
MariaDB [(none)]> create database school;
Query OK, 1 row affected (0.00 sec)
slave1查看是否同步
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec)
slave2查看是否同步
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
5 rows in set (0.00 sec)
以上就是关于mariadb主从的相关配置与操作了，感谢大家的支持！