01 MySQL复制及MHA
实战：配置MHA
配置：
node1: MHA 192.168.1.130 CentOS7.2
node2：Master 192.168.1.131 CentOS7.2
node3：Slave 192.168.1.132 CentOS7.2
node4：Slave 192.168.1.133 CentOS7.2
一、准备mysql复制环境
[root@node2 ~]# yum -y install mariadb-server
[root@node2 ~]# vim /etc/my.cnf
添加
innodb_file_per_table = 1
skip_name_resolve = 1
log-bin = master-bin
relay-log = relay-bin
server_id = 1
[root@node2 ~]# systemctl start mariadb.service
[root@node2 ~]# mysql
MariaDB [(none)]> SHOW MASTER STATUS;
+-------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------+----------+--------------+------------------+
| master-bin.000003 | 245 | | |
+-------------------+----------+--------------+------------------+
MariaDB [(none)]> GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO ‘repluser‘@‘192.168.1.%‘ IDENTIFIED BY ‘replpass‘;
MariaDB [(none)]> FLUSH PRIVILEGES;
[root@node3 ~]# yum -y install mariadb-server
[root@node4 ~]# yum -y install mariadb-server
[root@node3 ~]# vim /etc/my.cnf
添加
innodb_file_per_table = 1
skip_name_resolve = 1
log-bin = master-bin
relay-log = relay-bin
server_id = 2
read_only = 1
relay_log_purge = 0
[root@node3 ~]# scp /etc/my.cnf node4:/etc
[root@node4 ~]# vim /etc/my.cnf
修改
server_id = 2
为
server_id = 3
[root@node3 ~]# systemctl start mariadb.service
[root@node3 ~]# mysql
MariaDB [(none)]> CHANGE MASTER TO MASTER_HOST=‘192.168.1.131‘,MASTER_USER=‘repluser‘,MASTER_PASSWORD=‘replpass‘,MASTER_LOG_FILE=‘master-bin.000003‘,MASTER_LOG_POS=245;
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: 192.168.1.131
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000003
Read_Master_Log_Pos: 498
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 783
Relay_Master_Log_File: master-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
[root@node4 ~]# systemctl start mariadb.service
[root@node4 ~]# mysql
MariaDB [(none)]> CHANGE MASTER TO MASTER_HOST=‘192.168.1.131‘,MASTER_USER=‘repluser‘,MASTER_PASSWORD=‘replpass‘,MASTER_LOG_FILE=‘master-bin.000003‘,MASTER_LOG_POS=245;
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: 192.168.1.131
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000003
Read_Master_Log_Pos: 498
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 783
Relay_Master_Log_File: master-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
#node2（master节点）
MariaDB [(none)]> GRANT ALL ON *.* TO ‘mhauser‘@‘192.168.1.%‘ IDENTIFIED BY ‘mhapass‘;Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
#在node1节点上配置4台主机能互相通信
[root@node1 ~]# ssh-keygen -t rsa -P ‘‘
[root@node1 ~]# cat .ssh/id_rsa.pub > .ssh/authorized_keys
[root@node1 ~]#scp -p .ssh/id_rsa .ssh/authorized_keys node2:/root/.ssh
[root@node1 ~]#scp -p .ssh/id_rsa .ssh/authorized_keys node3:/root/.ssh
[root@node1 ~]#scp -p .ssh/id_rsa .ssh/authorized_keys node4:/root/.ssh
[root@node1 ~]# ls *rpm
mha4mysql-manager-0.56-0.el6.noarch.rpm
mha4mysql-node-0.56-0.el6.noarch.rpm
[root@node1 ~]# rpm -ivh epel-release-latest-7.noarch.rpm
[root@node1 ~]# yum install mha4mysql-* -y
[root@node1 ~]# scp mha4mysql-node-0.56-0.el6.noarch.rpm node2:/root
[root@node1 ~]# scp mha4mysql-node-0.56-0.el6.noarch.rpm node3:/root
[root@node1 ~]# scp mha4mysql-node-0.56-0.el6.noarch.rpm node4:/root
[root@node2 ~]# yum -y install mha4mysql-node-0.56-0.el6.noarch.rpm
[root@node3 ~]# yum -y install mha4mysql-node-0.56-0.el6.noarch.rpm
[root@node4 ~]# yum -y install mha4mysql-node-0.56-0.el6.noarch.rpm
[root@node1 ~]# mkdir /etc/masterha
[root@node1 ~]# vim /etc/masterha/app1.cnf
添加
[server default]
user=mhauser
password=mhapass
manager_workdir=/data/masterha/app1
manager_log=/data/masterha/app1/manager.log
remote_workdir=/data/masterha/app1
ssh_user=root
repl_user=repluser
repl_password=replpass
ping_interval=1
[server1]
hostname=192.168.1.131
[server2]
hostname=192.168.1.132
candidate_master=1
[server3]
hostname=192.168.1.133
#检查ssh环境
[root@node1 ~]# masterha_check_ssh --conf=/etc/masterha/app1.cnf
#检查主从复制环境
[root@node1 ~]# masterha_check_repl --conf=/etc/masterha/app1.cnf
#启动MHA
[root@node1 ~]# masterha_manager --conf=/etc/masterha/app1.cnf
#测试：关掉master mysql
[root@node2 ~]# killall mysqld mysqld_safe
测试结果：
#master已变为node3（192.168.1.132）
[root@node4 ~]# mysql
MariaDB [(none)]> SHOW SLAVE STATUS \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.132
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000003
Read_Master_Log_Pos: 245
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 530
Relay_Master_Log_File: master-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
MariaDB [(none)]> SHOW GLOBAL VARIABLES LIKE ‘read_only‘;
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| read_only | ON |
+---------------+-------+
#node3自动变为master，read_only状态被关闭
[root@node3 ~]# mysql
MariaDB [(none)]> SHOW MASTER STATUS;
+-------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------+----------+--------------+------------------+
| master-bin.000003 | 245 | | |
+-------------------+----------+--------------+------------------+
MariaDB [(none)]> SHOW GLOBAL VARIABLES LIKE ‘read_only‘;
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| read_only | OFF |
+---------------+-------+
[root@node2 ~]# vim /etc/my.cnf
添加
read_only = 1
relay_log_purge = 0
[root@node2 ~]# rm -rf /var/lib/mysql/*
[root@node2 ~]# systemctl start mariadb.service
[root@node2 ~]# mysql
MariaDB [(none)]> CHANGE MASTER TO MASTER_HOST=‘192.168.1.132‘,MASTER_USER=‘repluser‘,MASTER_PASSWORD=‘replpass‘;
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: 192.168.1.132
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000003
Read_Master_Log_Pos: 245
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 25940
Relay_Master_Log_File: master-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 1062
Last_Error: Error ‘Duplicate entry ‘%-test-‘ for key ‘PRIMARY‘‘ on query. Default database: ‘mysql‘. Query: ‘INSERT INTO db SELECT * FROM tmp_db WHERE @had_db_table=0‘
MariaDB [(none)]> \q
[root@node2 ~]# systemctl stop mariadb.service
[root@node2 ~]# rm -rf /var/lib/mysql/*
[root@node2 ~]# systemctl start mariadb.service
[root@node2 ~]# mysql
MariaDB [(none)]> GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO ‘repluser‘@‘192.168.1.%‘ IDENTIFIED BY ‘replpass‘;
MariaDB [(none)]> CHANGE MASTER TO MASTER_HOST=‘192.168.1.132‘,MASTER_USER=‘repluser‘,MASTER_PASSWORD=‘replpass‘;
MariaDB [(none)]> GRANT ALL ON *.* TO ‘mhauser‘@‘192.168.1.%‘ IDENTIFIED BY ‘mhapass‘;
MariaDB [(none)]> CHANGE MASTER TO MASTER_HOST=‘192.168.1.132‘,MASTER_USER=‘repluser‘,MASTER_PASSWORD=‘replpass‘,MASTER_LOG_FILE=‘master-bin.000003‘,MASTER_LOG_POS=245;
MariaDB [(none)]> START SLAVE;
MariaDB [(none)]> SHOW SLAVE STATUS \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.132
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000003
Read_Master_Log_Pos: 245
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 530
Relay_Master_Log_File: master-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
[root@node1 ~]# masterha_check_status --conf=/etc/masterha/app1.cnf
app1 (pid:37651) is running(0:PING_OK), master:192.168.1.132
02 MySQL复制及Galera Cluster
实战：配置Galera Cluster
配置环境：
node1: MHA 192.168.1.130 CentOS7.2
node2：Master 192.168.1.131 CentOS7.2
node3：Slave 192.168.1.132 CentOS7.2
node4：Slave 192.168.1.133 CentOS7.2
环境准备
[root@node1 ~]# vim /etc/hosts
添加
192.168.1.131 node1
192.168.1.132 node2
192.168.1.133 node3
[root@node1 ~]# scp /etc/hosts node2:/etc
[root@node1 ~]# scp /etc/hosts node3:/etc
#在node1节点上配置3台主机能互相通信
[root@node1 ~]# ssh-keygen -t rsa -P ‘‘
[root@node1 ~]# cat .ssh/id_rsa.pub > .ssh/authorized_keys
[root@node1 ~]#scp -p .ssh/id_rsa .ssh/authorized_keys node2:/root/.ssh
[root@node1 ~]#scp -p .ssh/id_rsa .ssh/authorized_keys node3:/root/.ssh
[root@node1 ~]# cd /etc/yum.repos.d/
[root@node1 yum.repos.d]# vim galera.repo
添加
[galera]
name=Galera Cluster from MariaDB
baseurl=ftp://192.168.1.131/pub/galera_cluster/
gpgcheck=0
[root@node1 ~]# rpm -ivh /mnt/Packages/vsftpd-3.0.2-10.el7.x86_64.rpm
[root@node1 ~]# systemctl start vsftpd.service
[root@node1 ~]# cp -r galer_cluster /var/ftp/pub/
[root@node1 yum.repos.d]# yum repolist
[root@node1 ~]# yum -y install MariaDB-Cluster
[root@node1 ~]# yum list all | grep -i "mariadb"
[root@node1 ~]# yum -y install MariaDB-Galera-server
[root@node1 ~]# scp /etc/yum.repos.d/galera.repo node2:/etc/yum.repos.d/galera.repo
[root@node1 ~]# scp /etc/yum.repos.d/galera.repo node3:/etc/yum.repos.d/galera.repo
[root@node2 ~]# yum -y install MariaDB-Galera-server
[root@node3 ~]# yum -y install MariaDB-Galera-server
[root@node1 ~]# vim /etc/my.cnf.d/server.cnf
修改[galera]的内容为：
[galera]
# Mandatory settings
wsrep_provider=/usr/lib64/galera/libgalera_smm.so
wsrep_cluster_address="gcomm://192.168.1.131,192.168.1.132,192.168.1.133"
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
bind-address=0.0.0.0
wsrep_cluster_name=‘mycluster‘
[root@node1 ~]# scp /etc/my.cnf.d/server.cnf node2:/etc/my.cnf.d/
[root@node1 ~]# scp /etc/my.cnf.d/server.cnf node3:/etc/my.cnf.d/
#启动
[root@node1 ~]# /etc/rc.d/init.d/mysql start --wsrep-new-cluster
[root@node2 ~]# service mysql start
[root@node3 ~]# service mysql start
[root@node1 ~]# mysql
MariaDB [(none)]> CREATE DATABASE mydb;
MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mydb |
| mysql |
| performance_schema |
| test |
+--------------------+
[root@node2 ~]# mysql
MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mydb |
| mysql |
| performance_schema |
| test |
+--------------------+
MariaDB [(none)]> use mydb;
Database changed
MariaDB [mydb]> CREATE TABLE tb1(id int,name char(10));
[root@node3 ~]# mysql
MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mydb |
| mysql |
| performance_schema |
| test |
+--------------------+
MariaDB [(none)]> use mydb;
MariaDB [mydb]> SHOW TABLES;
+----------------+
| Tables_in_mydb |
+----------------+
| tb1 |
+----------------+
MariaDB [mydb]> DESC tb1;
+-------+----------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+----------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | char(10) | YES | | NULL | |
+-------+----------+------+-----+---------+-------+
MariaDB [mydb]> CREATE TABLE tb2(id int UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,name CHAR(30));
MariaDB [mydb]> INSERT INTO tb2 (name) VALUES (‘hi‘),(‘hello‘);
node2节点：
MariaDB [mydb]> SELECT * FROM tb2;
+----+-------+
| id | name |
+----+-------+
| 2 | hi |
| 5 | hello |
+----+-------+
MariaDB [mydb]> INSERT INTO tb2 (name) VALUES (‘to‘),(‘from‘);
MariaDB [mydb]> SELECT * FROM tb2;
+----+-------+
| id | name |
+----+-------+
| 2 | hi |
| 5 | hello |
| 7 | to |
| 10 | from |
+----+-------+
本文出自 “追梦” 博客，请务必保留此出处http://sihua.blog.51cto.com/377227/1876321
原文地址：http://sihua.blog.51cto.com/377227/1876321
