keeplived + mysql雙主復制部署 --原創
環境：
| master 1: | 192.168.100.10 | oracle linux 7.4 | mysql 5.7.1 |
| master 2: | 192.168.100.11 | oracle linux 7.4 | mysql 5.7.1 |
| keepalived VIP | 192.168.100.12 |
配置本地yum倉庫
vim /etc/yum.repo.d/public-yum-ol7.repo
[yum_repo]
name=yum_repo
baseurl=file:///share/repo
gpgcheck=0
enabled=1
安裝mysql
檢查是否已經安裝
rpm -qa | grep mysql
1.mysql安裝包安裝順序 安裝包有依賴關系必須按照順序安裝
1. mysql-community-common-5.7.21-1.el7.x86_64.rpm
2. mysql-community-libs-5.7.21-1.el7.x86_64.rpm
3. mysql-community-client-5.7.21-1.el7.x86_64.rpm
4. mysql-community-server-5.7.21-1.el7.x86_64.rpm
2.初始化mysql 在初始化完成後會生成一個過期的root密碼，登錄mysql後需要立刻更改，否則無法使用任何命令
rpm -qa | grep mysql
3.啟動mysql
systemctl start mysqld
4.查看mysql root密碼
cat /var/log/mysqld.log | grep password
5.mysql安全設置 (可選項，可以重置root密碼)
mysql_secure_installation
6.登錄mysql
mysql -u root -p
7.修改root密碼
alter user ‘root‘@‘%‘ identified by ‘Len#qwer‘;
8.設置root賬戶永不過期 (可選項)
alter user ‘root‘@‘%‘ password expire never;
配置雙主
修改mysql配置文件c
master1節點
vim /etc/my.cnf [mysqld] log-bin=mysql-bin #開啟二進制日誌 server-id=1 #設置server-id 主備庫必須不同 log_slave_updates=1
master2節點
vim /etc/my.cnf [mysqld] log-bin=mysql-bin #開啟二進制日誌 server-id=2 #設置server-id 主備庫必須不同 log_slave_updates=1
2.重啟mysql，
master1節點
systemctl restart mysqld
master2節點
systemctl restart mysqld
創建同步用戶
master1節點
CREATE USER ‘repl‘@‘192.168.100.11‘ IDENTIFIED BY ‘Phjj#qwer‘; GRANT REPLICATION SLAVE ON *.* TO ‘repl‘@‘192.168.100.11‘;
master2節點
CREATE USER ‘repl‘@‘192.168.100.10‘ IDENTIFIED BY ‘Phjj#qwer‘; GRANT REPLICATION SLAVE ON *.* TO ‘repl‘@‘192.168.100.10‘;
查看兩個節點的binlog文件名稱和post位置，用於配置復制
master1節點
mysql> show master status; +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000004 | 619 | | | | +------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec)
master2節點
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000002 | 1175 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
master1節點
start slave;
master2節點
start slave;
配置復制
master1節點
CHANGE MASTER TO MASTER_HOST=‘192.168.100.11‘, MASTER_USER=‘repl‘, MASTER_PASSWORD=‘Phjj#qwer‘, MASTER_LOG_FILE=‘mysql-bin.000002‘, MASTER_LOG_POS=1175;
master2節點
CHANGE MASTER TO MASTER_HOST=‘192.168.100.10‘, MASTER_USER=‘repl‘, MASTER_PASSWORD=‘Phjj#qwer‘, MASTER_LOG_FILE=‘mysql-bin.000004‘, MASTER_LOG_POS=619;
master1啟動復制
start slave;
master2啟動復制
start slave;
查看復制狀態 Slave_IO_Running,Slave_SQL_Running 狀態必須為running才為正常
mysql> show slave status\G;
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
安裝Keepalived
yum install -y keepalived
配置keepalived
master1節點
vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived global_defs { notification_email { [email protected] [email protected] [email protected] } notification_email_from [email protected] smtp_server 192.168.200.1 smtp_connect_timeout 30 router_id LVS_DEVEL vrrp_skip_check_adv_addr # vrrp_strict vrrp_garp_interval 0 vrrp_gna_interval 0 } vrrp_instance VI_1 { state BACKUP interface ens160 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.100.12/24 } }
virtual_server 192.168.100.12 3306 {
delay_loop 6
lb_algo rr
lb_kind NAT
persistence_timeout 50
protocol TCP
real_server 192.168.100.10 3306 {
weight 3
notify_down /etc/keepalived/kill_keepalived.sh
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
master2節點
vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
[email protected]
[email protected]
[email protected]
}
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
vrrp_skip_check_adv_addr
# vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}
vrrp_instance VI_1 {
state BACKUP
interface ens160
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.100.12/24
}
}
virtual_server 192.168.100.12 3306 {
delay_loop 6
lb_algo rr
lb_kind NAT
persistence_timeout 50
protocol TCP
real_server 192.168.100.11 3306 {
weight 3
notify_down /etc/keepalived/kill_keepalived.sh
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
配置關閉keepalived腳本
vim /etc/keepalived/kill_keepalived.sh
#!/bin/bash
pkill keepalived
添加執行權限給 關閉keepalived腳本
chmod +x /etc/keepalived/kill_keepalived.sh
查看keepalived VIP地址
ip addr
UUID相同導致mysql無法進行復制
故障現象
vim /var/log/mysqld.log
2018-02-12T02:13:14.499315Z 7 [Note] Slave SQL thread for channel ‘‘ initialized, starting replication in log ‘mysql-bin.000001‘ at position 619, relay log ‘./ajiamysql1-relay-bin.000001‘ position: 4 2018-02-12T02:13:14.499839Z 6 [Note] Slave I/O thread for channel ‘‘: connected to master ‘[email protected]:3306‘,replication started in log ‘mysql-bin.000001‘ at position 619 2018-02-12T02:13:14.501900Z 6 [ERROR] Slave I/O for channel ‘‘: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server UUIDs; these UUIDs must be different for replication to work. Error_code: 1593
故障原因：直接復制已經安裝好mysql的虛擬機導致mysql UUID相同無法進行復制連接 註意：UUID和server_id一樣不能相同
故障解決： 修改mysql UUID
[root@ajiamysql1 mysql]# vim /var/lib/mysql/auto.cnf
[auto]
server-uuid=6fe77f0a-eae1-11e7-805e-005056b309100
keeplived + mysql雙主復制部署 --原創