Mysql5.6.22双向复制+KeepAlived如何配置mysql的高可用
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[root@xxt01 ~]#groupadd mysql
[root@xxt01 ~]#useradd -g mysql -s /sbin/nologin -d /opt/mysql mysql
2.3 检查 mysql账号
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[root@xxt01 ~]#mkdir -p /usr/local/mysql
[root@xxt01 ~]#mkdir -p /usr/local/mysql/data
2.4.1 执行cmake：
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mysql> show master status;
+---------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+---------------------+----------+--------------+------------------+-------------------+
| mysql-binlog.000002 | 624556 | | | |
+---------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql>
master 同步操作，参数Slave_IO_Running和Slave_SQL_Running为YES时表示成功，同时无其他错误
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mysql> grant replication slave on *.* to 'slave'@'10.6.0.203' identified by '123456';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> change master to master_host='10.6.0.204',master_user='slave',master_password='123456',master_log_file='mysql-binlog.000002',master_log_pos=624556;
Query OK, 0 rows affected, 2 warnings (0.01 sec)
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.6.0.204
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-binlog.000002
Read_Master_Log_Pos: 624556
Relay_Log_File: xxt01-relay-bin.000002
Relay_Log_Pos: 286
Relay_Master_Log_File: mysql-binlog.000002
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: 624556
Relay_Log_Space: 459
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: 2
Master_UUID: aa208c56-216f-11e6-ace3-000c29065661
Master_Info_File: /usr/local/mysql/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
服务安装，同时保持master和slave服务配置相同。
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[root@xxt01 ~]# tar zxf keepalived-1.2.15.tar.gz
[root@xxt01 keepalived-1.2.15]# ./configure --prefix=/usr/local/keepalived
[root@xxt01 keepalived-1.2.15]# make && make install
[root@xxt01 etc]# cp -a /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
[root@xxt01 etc]# cp -a /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
[root@xxt01 etc]#mkdir /etc/keepalived/
[root@xxt01 etc]# cp -a /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
[root@xxt01 etc]# cp -a /usr/local/keepalived/sbin/keepalived /usr/sbin/
4.1 修改203的 /etc/keepalived/keepalived.conf 文件
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! Configuration File for keepalived
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
10.6.0.205
}
}
# set mysqld
virtual_server 10.6.0.205 3306 {
delay_loop 6
lb_algo wrr
lb_kind DR
persistence_timeout 50
protocol TCP
real_server 10.6.0.203 3306 {
weight 3
notify_down /etc/keepalived/killkeepalived.sh
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
4.2配置 killkeepalived.sh
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[root@xxt01 etc]# vi /etc/keepalived/killkeepalived.sh
#!/bin/sh
pkill keepalived
4.3 分别检查mater和slave的/var/log/message日志，分别做启停mysqld服务测试，信息如下表示服务正常。
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203 master 服务器
May 24 15:47:38 xxt01 Keepalived_vrrp[14242]: Configuration is using : 63545 Bytes
May 24 15:47:38 xxt01 Keepalived_vrrp[14242]: Using LinkWatch kernel netlink reflector...
May 24 15:47:38 xxt01 Keepalived_vrrp[14242]: VRRP sockpool: [ifindex(2), proto(112), unicast(0), fd(10,11)]
May 24 15:47:38 xxt01 Keepalived_healthcheckers[14241]: Using LinkWatch kernel netlink reflector...
May 24 15:47:38 xxt01 Keepalived_healthcheckers[14241]: Activating healthchecker for service [10.6.0.203]:3306
May 24 15:47:39 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Transition to MASTER STATE
May 24 15:47:40 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Entering MASTER STATE
May 24 15:47:40 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) setting protocol VIPs.
May 24 15:47:40 xxt01 Keepalived_healthcheckers[14241]: Netlink reflector reports IP 10.6.0.205 added
May 24 15:47:40 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 10.6.0.205
May 24 15:47:45 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 10.6.0.205
May 24 15:56:27 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Received higher prio advert
May 24 15:56:27 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Entering BACKUP STATE
May 24 15:56:27 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) removing protocol VIPs.
May 24 15:56:27 xxt01 Keepalived_healthcheckers[14241]: Netlink reflector reports IP 10.6.0.205 removed
May 24 16:01:28 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Transition to MASTER STATE
May 24 16:01:29 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Entering MASTER STATE
May 24 16:01:29 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) setting protocol VIPs.
May 24 16:01:29 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 10.6.0.205
May 24 16:01:29 xxt01 Keepalived_healthcheckers[14241]: Netlink reflector reports IP 10.6.0.205 added
May 24 16:01:34 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 10.6.0.205
May 24 16:08:36 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Received higher prio advert
May 24 16:08:36 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) Entering BACKUP STATE
May 24 16:08:36 xxt01 Keepalived_vrrp[14242]: VRRP_Instance(VI_1) removing protocol VIPs.
May 24 16:08:36 xxt01 Keepalived_healthcheckers[14241]: Netlink reflector reports IP 10.6.0.205 removed
204 slave 服务器
May 24 16:08:36 xxt02 Keepalived[15014]: Starting Keepalived v1.2.15 (05/24,2016)
May 24 16:08:36 xxt02 Keepalived[15015]: Starting Healthcheck child process, pid=15016
May 24 16:08:36 xxt02 Keepalived[15015]: Starting VRRP child process, pid=15017
May 24 16:08:36 xxt02 Keepalived_healthcheckers[15016]: Netlink reflector reports IP 10.6.0.204 added
May 24 16:08:36 xxt02 Keepalived_healthcheckers[15016]: Netlink reflector reports IP fe80::20c:29ff:fe06:5661 added
May 24 16:08:36 xxt02 Keepalived_healthcheckers[15016]: Registering Kernel netlink reflector
May 24 16:08:36 xxt02 Keepalived_healthcheckers[15016]: Registering Kernel netlink command channel
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: Netlink reflector reports IP 10.6.0.204 added
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: Netlink reflector reports IP fe80::20c:29ff:fe06:5661 added
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: Registering Kernel netlink reflector
May 24 16:08:36 xxt02 Keepalived_healthcheckers[15016]: Opening file '/etc/keepalived/keepalived.conf'.
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: Registering Kernel netlink command channel
May 24 16:08:36 xxt02 Keepalived_healthcheckers[15016]: Configuration is using : 11978 Bytes
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: Registering gratuitous ARP shared channel
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: Opening file '/etc/keepalived/keepalived.conf'.
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: Configuration is using : 63545 Bytes
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: Using LinkWatch kernel netlink reflector...
May 24 16:08:36 xxt02 Keepalived_healthcheckers[15016]: Using LinkWatch kernel netlink reflector...
May 24 16:08:36 xxt02 Keepalived_healthcheckers[15016]: Activating healthchecker for service [10.6.0.204]:3306
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: VRRP sockpool: [ifindex(2), proto(112), unicast(0), fd(10,11)]
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: VRRP_Instance(VI_1) Transition to MASTER STATE
May 24 16:08:36 xxt02 Keepalived_vrrp[15017]: VRRP_Instance(VI_1) Received lower prio advert, forcing new election
May 24 16:08:37 xxt02 Keepalived_vrrp[15017]: VRRP_Instance(VI_1) Entering MASTER STATE
May 24 16:08:37 xxt02 Keepalived_vrrp[15017]: VRRP_Instance(VI_1) setting protocol VIPs.
May 24 16:08:37 xxt02 Keepalived_healthcheckers[15016]: Netlink reflector reports IP 10.6.0.205 added
May 24 16:08:37 xxt02 Keepalived_vrrp[15017]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 10.6.0.205
May 24 16:08:42 xxt02 Keepalived_vrrp[15017]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 10.6.0.205
May 24 16:10:14 xxt02 yum[15023]: Installed: 2:nmap-5.51-3.el6.x86_64
4.4检查服务
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[root@xxt01 mysql]# nmap 10.6.0.205
Starting Nmap 5.51 ( http://nmap.org ) at 2016-05-24 16:14 CST
mass_dns: warning: Unable to determine any DNS servers. Reverse DNS is disabled. Try using --system-dns or specify valid servers with --dns-servers
Nmap scan report for 10.6.0.205
Host is up (0.00029s latency).
Not shown: 998 closed ports
PORT STATE SERVICE
111/tcp open rpcbind
3306/tcp open mysql
MAC Address: 00:0C:29:06:56:61 (VMware)
Nmap done: 1 IP address (1 host up) scanned in 1.21 seconds
[root@xxt01 mysql]# nmap 10.6.0.203
Starting Nmap 5.51 ( http://nmap.org ) at 2016-05-24 16:15 CST
mass_dns: warning: Unable to determine any DNS servers. Reverse DNS is disabled. Try using --system-dns or specify valid servers with --dns-servers
Nmap scan report for 10.6.0.203
Host is up (0.0000050s latency).
Not shown: 998 closed ports
PORT STATE SERVICE
111/tcp open rpcbind
3306/tcp open mysql
Nmap done: 1 IP address (1 host up) scanned in 0.08 seconds
[root@xxt01 mysql]#
[root@xxt01 mysql]# nmap 10.6.0.205
Starting Nmap 5.51 ( http://nmap.org ) at 2016-05-24 16:14 CST
mass_dns: warning: Unable to determine any DNS servers. Reverse DNS is disabled. Try using --system-dns or specify valid servers with --dns-servers
Nmap scan report for 10.6.0.205
Host is up (0.00029s latency).
Not shown: 998 closed ports
PORT STATE SERVICE
111/tcp open rpcbind
3306/tcp open mysql
MAC Address: 00:0C:29:06:56:61 (VMware)
Nmap done: 1 IP address (1 host up) scanned in 1.21 seconds
[root@xxt01 mysql]# nmap 10.6.0.203
Starting Nmap 5.51 ( http://nmap.org ) at 2016-05-24 16:15 CST
mass_dns: warning: Unable to determine any DNS servers. Reverse DNS is disabled. Try using --system-dns or specify valid servers with --dns-servers
Nmap scan report for 10.6.0.203
Host is up (0.0000050s latency).
Not shown: 998 closed ports
PORT STATE SERVICE
111/tcp open rpcbind
3306/tcp open mysql
Nmap done: 1 IP address (1 host up) scanned in 0.08 seconds
[root@xxt01 mysql]#