manbetx手机网页版搭建MySQL的着力、半壹只、主主复制框架结构

实例拓扑图:

复制其最终指标是让1台服务器的数额和别的的服务器的多太尉持同步,已到达多少冗余可能服务的负荷均衡。一台主服务器能够连接多台从服务器,并且从服务器也足以扭转作为主服务器。主从服务器能够放在不相同的网络拓扑中,由于mysql的无敌复制作用,其复制目的能够是装有的数据库,也足以是少数数据库,甚至是有个别数据库中的某个表实行复制。

manbetx手机网页版 1

MySQL帮衬的二种复制方案:依照语句复制,基于行复制
依照语句复制基于行复制,那二种复制格局都以经过记录主服务器的二进制日志中此外有相当的大希望引致数据库内数据发生转移的SQL语句到连片日志,并且在从服务器上进行以下中继日志内的SQL语句,而落成与主服务器的数码同步。不一样的是,当主服务器上实行了八个依照变量的多少并将其履新到数据库中,如now()函数,而那时依据语句复制时记下的就是该SQL语句的整整语法,而依照行复制正是将now()更新到数据库的数值记录下来。
譬如说:在主服务器上实行以下语句:
mysql>update user set createtime=now() where sid=16;
若是此时now()再次来到的值是:二零一三-04-1陆 20:四陆:3伍
基于语句的复制就会将其记录为:update user set createtime=now() where
sid=1六;
听他们讲行复制的就会将其记录为:update user set createtime=’二〇一二-0肆-16
20:四陆:35′ where sid=1陆;

D奥迪Q31和D帕杰罗2计划keepalived和lvs作主从框架结构或主主架构,LANDS一和卡宴S2安插nginx搭建web站点。

实行主从复制运维的七个线程
Binlog dump线程:将贰进制日志的始末发送给从服务器
I/O从线程:将收受的的多少写入到连片日志
SQL线程:二遍从中继日志中读出一句SQL语句在从服务器上施行

只顾:各节点的光阴需求共同(ntpdate
ntp一.aliyun.com);关闭firewalld(systemctl stop
firewalld.service,systemctl disable
firewalld.service),设置selinux为permissive(setenforce
0);同时保障各网卡支持MULTICAST(多播)通讯。

1、主从复制:
预备干活:
一.改变配置文件(server_id一定要修改)
2.创建复制用户
3.初步从服务器的从服务进度

经过命令ifconfig可以查看到是还是不是展开了MULTICAST:

规划:
Master:IP地址:172.16.4.11    版本:mysql-5.5.20
Slave:IP地址:172.16.4.12    版本:mysql-5.5.20
此间需注意,mysql复制大部分皆以后向包容,所以,从服务器的版本一定要压倒或等于主服务器的本子。
1、Master
修改配置文件,将其设为mysql主服务器
#vim /etc/my.cnf
server_id=11                #修改server_id=11
log_bin=mysql-bin            #拉开二进制日志
sync_binlog=1              
#任何3个作业提交之后就登时写入到磁盘中的2进制文件
innodb_flush_logs_at_trx_commit=1      
#其他二个东西提交之后就立刻写入到磁盘中的日志文件

     
 manbetx手机网页版 2

封存退出
#service mysql reload             #重复载入mysql的配置文件

keepalived的骨干框架结构

2、Master上开创用户,授予复制权限
mysql>grant replication client,replication slave on *.* to
repl@172.16.4.12 identified by ‘135246’;
mysql>flush privileges;

搭建RS1:

[root@RS1 ~]# yum -y install nginx   #安装nginx
[root@RS1 ~]# vim /usr/share/nginx/html/index.html   #修改主页
    <h1> 192.168.4.118 RS1 server </h1>
[root@RS1 ~]# systemctl start nginx.service   #启动nginx服务
[root@RS1 ~]# vim RS.sh   #配置lvs-dr的脚本文件
    #!/bin/bash
    #
    vip=192.168.4.120
    mask=255.255.255.255
    case $1 in
    start)
        echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
        echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
        echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
        echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
        ifconfig lo:0 $vip netmask $mask broadcast $vip up
        route add -host $vip dev lo:0
        ;;
    stop)
        ifconfig lo:0 down
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
        ;;
    *) 
        echo "Usage $(basename $0) start|stop"
        exit 1
        ;;
    esac
[root@RS1 ~]# bash RS.sh start

3、Slave
修改配置文件,将其安装为1个mysql从服务器
#vim /etc/my.cnf
server_id=12                #修改server_id=12
#log-bin               
#疏解掉log-bin,从服务器不须求二进制日志,因而将其倒闭
relay-log=mysql-relay               
#概念中继日志名,开启从服务器中继日志
relay-log-index=mysql-relay.index    
#概念中继日志索引名,开启从服务器中继索引
read_only=1                   
#设定从服务器只可以举办读操作,不能够拓展写操作

参考福睿斯S壹的安插搭建SportageS2。

保留退出
#service mysql reload             #重复载入mysql的配备文件

搭建DR1:

[root@DR1 ~]# yum -y install ipvsadm keepalived   #安装ipvsadm和keepalived
[root@DR1 ~]# vim /etc/keepalived/keepalived.conf   #修改keepalived.conf配置文件
    global_defs {
       notification_email {
         root@localhost
       }
       notification_email_from keepalived@localhost
       smtp_server 127.0.0.1
       smtp_connect_timeout 30
       router_id 192.168.4.116
       vrrp_skip_check_adv_addr
       vrrp_mcast_group4 224.0.0.10
    }

    vrrp_instance VIP_1 {
        state MASTER
        interface eno16777736
        virtual_router_id 1
        priority 100
        advert_int 1
        authentication {
            auth_type PASS
            auth_pass %&hhjj99
        }
        virtual_ipaddress {
          192.168.4.120/24 dev eno16777736 label eno16777736:0
        }
    }

    virtual_server 192.168.4.120 80 {
        delay_loop 6
        lb_algo rr
        lb_kind DR
        protocol TCP

        real_server 192.168.4.118 80 {
            weight 1
            HTTP_GET {
                url {
                  path /index.html
                  status_code 200
                }
                connect_timeout 3
                nb_get_retry 3
                delay_before_retry 3
            }
        }
        real_server 192.168.4.119 80 {
            weight 1
            HTTP_GET {
                url {
                  path /index.html
                  status_code 200
                }
                connect_timeout 3
                nb_get_retry 3
                delay_before_retry 3
            }
         }
    }
[root@DR1 ~]# systemctl start keepalived
[root@DR1 ~]# ifconfig
    eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.4.116  netmask 255.255.255.0  broadcast 192.168.4.255
            inet6 fe80::20c:29ff:fe93:270f  prefixlen 64  scopeid 0x20<link>
            ether 00:0c:29:93:27:0f  txqueuelen 1000  (Ethernet)
            RX packets 14604  bytes 1376647 (1.3 MiB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 6722  bytes 653961 (638.6 KiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    eno16777736:0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.4.120  netmask 255.255.255.0  broadcast 0.0.0.0
            ether 00:0c:29:93:27:0f  txqueuelen 1000  (Ethernet)
[root@DR1 ~]# ipvsadm -ln
    IP Virtual Server version 1.2.1 (size=4096)
    Prot LocalAddress:Port Scheduler Flags
      -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
    TCP  192.168.4.120:80 rr
      -> 192.168.4.118:80             Route   1      0          0         
      -> 192.168.4.119:80             Route   1      0          0

4、验证Slave上连接日志以及server_id是不是均生效
mysql>show variables like ‘relay%’;
+———————–+—————–+
| Variable_name         | Value           |
+———————–+—————–+
| relay_log             | relay-bin       |
| relay_log_index       | relay-bin.index |
| relay_log_info_file   | relay-log.info  |
| relay_log_purge       | ON              |
| relay_log_recovery    | OFF             |
| relay_log_space_limit | 0               |
+———————–+—————–+
mysql>show variables like ‘server_id’;
+—————+——-+
| Variable_name | Value |
+—————+——-+
| server_id     | 12    |
+—————+——-+

DKuga二的搭建基本同DMurano①,首要修改一下安顿文件中/etc/keepalived/keepalived.conf的state和priority:state BACKUP、priority 90. 同时大家发现作为backup的D奥德赛二未有启用eno16777736:0的网口:

manbetx手机网页版 3

伍、运行从服务器的从劳动进度
场景一、即便主服务器和从服务器都以新创建的,并不曾新添别的数据,则进行以下命令:
mysql>change master to \
master_host=’172.16.4.11′,
master_user=’repl’,
master_password=’135246′;
mysql>show slave status\G
*************************** 1. row
***************************
Slave_IO_State:
Master_Host: 172.16.4.11
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 107
Relay_Log_File: relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: No
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: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 25520
Relay_Log_Space: 2565465
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: NULL
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: 0
mysql>start slave;
mysql>show slave status\G
*************************** 1. row
***************************
Slave_IO_State: Queueing master event to the relay log
Master_Host: 172.16.4.11
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 107
Relay_Log_File: relay-bin.000001
Relay_Log_Pos: 4
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: 360
Relay_Log_Space: 300
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: 11

客户端举办测试:

[root@client ~]# for i in {1..20};do curl http://192.168.4.120;done   #客户端正常访问
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>

[root@DR1 ~]# systemctl stop keepalived.service   #关闭DR1的keepalived服务

[root@DR2 ~]# systemctl status keepalived.service   #观察DR2,可以看到DR2已经进入MASTER状态
● keepalived.service - LVS and VRRP High Availability Monitor
   Loaded: loaded (/usr/lib/systemd/system/keepalived.service; disabled; vendor preset: disabled)
   Active: active (running) since Tue 2018-09-04 11:33:04 CST; 7min ago
  Process: 12983 ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS (code=exited, status=0/SUCCESS)
 Main PID: 12985 (keepalived)
   CGroup: /system.slice/keepalived.service
           ├─12985 /usr/sbin/keepalived -D
           ├─12988 /usr/sbin/keepalived -D
           └─12989 /usr/sbin/keepalived -D

Sep 04 11:37:41 happiness Keepalived_healthcheckers[12988]: SMTP alert successfully sent.
Sep 04 11:40:22 happiness Keepalived_vrrp[12989]: VRRP_Instance(VIP_1) Transition to MASTER STATE
Sep 04 11:40:23 happiness Keepalived_vrrp[12989]: VRRP_Instance(VIP_1) Entering MASTER STATE
Sep 04 11:40:23 happiness Keepalived_vrrp[12989]: VRRP_Instance(VIP_1) setting protocol VIPs.
Sep 04 11:40:23 happiness Keepalived_vrrp[12989]: Sending gratuitous ARP on eno16777736 for 192.168.4.120
Sep 04 11:40:23 happiness Keepalived_vrrp[12989]: VRRP_Instance(VIP_1) Sending/queueing gratuitous ARPs on eno16777736 for 192.168.4.120
Sep 04 11:40:23 happiness Keepalived_vrrp[12989]: Sending gratuitous ARP on eno16777736 for 192.168.4.120
Sep 04 11:40:23 happiness Keepalived_vrrp[12989]: Sending gratuitous ARP on eno16777736 for 192.168.4.120
Sep 04 11:40:23 happiness Keepalived_vrrp[12989]: Sending gratuitous ARP on eno16777736 for 192.168.4.120
Sep 04 11:40:23 happiness Keepalived_vrrp[12989]: Sending gratuitous ARP on eno16777736 for 192.168.4.120

[root@client ~]# for i in {1..20};do curl http://192.168.4.120;done   #可以看到客户端正常访问
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>
<h1> 192.168.4.119 RS2 server</h1>
<h1> 192.168.4.118 RS1 server </h1>

场景二、假如主服务器已经运转过一段了,从服务器是新扩大长的,则须求将主服务器从前的多寡导入到从服务器中:
Master:
#mysqldump -uroot -hlocalhost -p123456 –all-databases
–lock-all-tables –flush-logs –master-data=2 >
/backup/alldatabase.sql
mysql>flush tables with read lock;
mysql>show master status;
+——————+———-+————–+——————+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+——————+———-+————–+——————+
| mysql-bin.000004 |      360 |              |                  |
+——————+———-+————–+——————+
mysql>unlock tables;
#scp /backup/alldatabase.sql 172.16.4.12:/tmp

keepalived的主主架构

Slave:
#mysql -uroot -p123456 < /tmp/alldatabase.sql
mysql>change master to \
master_host=’172.16.4.11′,
master_user=’repl’,
master_password=’135246′,
master_log_file=’mysql-bin.000004′,
master_log_pos=360;
mysql>show slave status\G
*************************** 1. row
***************************
Slave_IO_State:
Master_Host: 172.16.4.11
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000004
Read_Master_Log_Pos: 360
Relay_Log_File: relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000004
Slave_IO_Running: No
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: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 360
Relay_Log_Space: 107
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: NULL
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: 0
mysql>start slave;

 修改途锐S一和猎豹CS陆S二,增加新的VIP:

[root@RS1 ~]# cp RS.sh RS_bak.sh
[root@RS1 ~]# vim RS_bak.sh   #添加新的VIP
    #!/bin/bash
    #
    vip=192.168.4.121
    mask=255.255.255.255
    case $1 in
    start)
        echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
        echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
        echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
        echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
        ifconfig lo:1 $vip netmask $mask broadcast $vip up
        route add -host $vip dev lo:1
        ;;
    stop)
        ifconfig lo:1 down
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
        echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
        ;;
    *)
        echo "Usage $(basename $0) start|stop"
        exit 1
        ;;
    esac
[root@RS1 ~]# bash RS_bak.sh start
[root@RS1 ~]# ifconfig
    ...
    lo:0: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
            inet 192.168.4.120  netmask 255.255.255.255
            loop  txqueuelen 0  (Local Loopback)

    lo:1: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
            inet 192.168.4.121  netmask 255.255.255.255
            loop  txqueuelen 0  (Local Loopback) 
[root@RS1 ~]# scp RS_bak.sh root@192.168.4.119:~
root@192.168.4.119's password: 
RS_bak.sh                100%  693     0.7KB/s   00:00

[root@RS2 ~]# bash RS_bak.sh   #直接运行脚本添加新的VIP 
[root@RS2 ~]# ifconfig
    ...
    lo:0: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
            inet 192.168.4.120  netmask 255.255.255.255
            loop  txqueuelen 0  (Local Loopback)

    lo:1: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
            inet 192.168.4.121  netmask 255.255.255.255
            loop  txqueuelen 0  (Local Loopback)

mysql>show slave status\G
*************************** 1. row
***************************
Slave_IO_State: Queueing master event to the relay log
Master_Host: 172.16.4.11
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000004
Read_Master_Log_Pos: 360
Relay_Log_File: relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000004
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: 360
Relay_Log_Space: 300
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: 11

修改DR1和DR2:

[root@DR1 ~]# vim /etc/keepalived/keepalived.conf   #修改DR1的配置文件,添加新的实例,配置服务器组
    ...
    vrrp_instance VIP_2 {
        state BACKUP
        interface eno16777736
        virtual_router_id 2
        priority 90
        advert_int 1
        authentication {
            auth_type PASS
            auth_pass UU**99^^
        }
        virtual_ipaddress {
            192.168.4.121/24 dev eno16777736 label eno16777736:1
        }
    }

    virtual_server_group ngxsrvs {
        192.168.4.120 80
        192.168.4.121 80
    }
    virtual_server group ngxsrvs {
        ...
    }
[root@DR1 ~]# systemctl restart keepalived.service   #重启服务
[root@DR1 ~]# ifconfig   #此时可以看到eno16777736:1,因为DR2还未配置
    eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.4.116  netmask 255.255.255.0  broadcast 192.168.4.255
            inet6 fe80::20c:29ff:fe93:270f  prefixlen 64  scopeid 0x20<link>
            ether 00:0c:29:93:27:0f  txqueuelen 1000  (Ethernet)
            RX packets 54318  bytes 5480463 (5.2 MiB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 38301  bytes 3274990 (3.1 MiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    eno16777736:0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.4.120  netmask 255.255.255.0  broadcast 0.0.0.0
            ether 00:0c:29:93:27:0f  txqueuelen 1000  (Ethernet)

    eno16777736:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.4.121  netmask 255.255.255.0  broadcast 0.0.0.0
            ether 00:0c:29:93:27:0f  txqueuelen 1000  (Ethernet)
[root@DR1 ~]# ipvsadm -ln
    IP Virtual Server version 1.2.1 (size=4096)
    Prot LocalAddress:Port Scheduler Flags
      -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
    TCP  192.168.4.120:80 rr
      -> 192.168.4.118:80             Route   1      0          0         
      -> 192.168.4.119:80             Route   1      0          0         
    TCP  192.168.4.121:80 rr
      -> 192.168.4.118:80             Route   1      0          0         
      -> 192.168.4.119:80             Route   1      0          0

[root@DR2 ~]# vim /etc/keepalived/keepalived.conf   #修改DR2的配置文件,添加实例,配置服务器组
    ...
    vrrp_instance VIP_2 {
        state MASTER
        interface eno16777736
        virtual_router_id 2
        priority 100
        advert_int 1
        authentication {
            auth_type PASS
            auth_pass UU**99^^
        }
        virtual_ipaddress {
            192.168.4.121/24 dev eno16777736 label eno16777736:1
        }
    }

    virtual_server_group ngxsrvs {
        192.168.4.120 80
        192.168.4.121 80
    }
    virtual_server group ngxsrvs {
        ...
    }
[root@DR2 ~]# systemctl restart keepalived.service   #重启服务
[root@DR2 ~]# ifconfig
    eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.4.117  netmask 255.255.255.0  broadcast 192.168.4.255
            inet6 fe80::20c:29ff:fe3d:a31b  prefixlen 64  scopeid 0x20<link>
            ether 00:0c:29:3d:a3:1b  txqueuelen 1000  (Ethernet)
            RX packets 67943  bytes 6314537 (6.0 MiB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 23250  bytes 2153847 (2.0 MiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    eno16777736:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.4.121  netmask 255.255.255.0  broadcast 0.0.0.0
            ether 00:0c:29:3d:a3:1b  txqueuelen 1000  (Ethernet)
[root@DR2 ~]# ipvsadm -ln
    IP Virtual Server version 1.2.1 (size=4096)
    Prot LocalAddress:Port Scheduler Flags
      -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
    TCP  192.168.4.120:80 rr
      -> 192.168.4.118:80             Route   1      0          0         
      -> 192.168.4.119:80             Route   1      0          0         
    TCP  192.168.4.121:80 rr
      -> 192.168.4.118:80             Route   1      0          0         
      -> 192.168.4.119:80             Route   1      0          0 

证实MySQL的主从复制框架结构成功

客户端测试:

[root@client ~]# for i in {1..20};do curl http://192.168.4.120;done
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
[root@client ~]# for i in {1..20};do curl http://192.168.4.121;done
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>
    <h1> 192.168.4.119 RS2 server</h1>
    <h1> 192.168.4.118 RS1 server </h1>

 

注壹:MySQL的复制能够依据某些数据库或库中的默写表实行理并答复制,要想达成该功用,只需在其安顿文件中丰盛以下配置:
Master:
binlog-do-db=db_name        只复制db_name数据库
binlog-ignore-db=db_name    不复制db_name数据库

注2:在Master上定义过滤规则,意味着,任何不关乎到该数据库相关的写操作都不会被记录到贰进制日志中,因而不提议在Master上定义过滤规则,并且不建议binlog-do-db与binlog-ignore-db同时定义。

Slave:
replicate_do_db=db_name            只复制db_name数据库
replicate_ignore_db=db_name        不复制db_name数据库
replicate_do_table=tb_name        只复制tb_name表
replicate_ignore_table=tb_name        只复制tb_name表
replicate_wild_do_table=test%       
只复制以test为始发并且前边跟上任意字符的名字的表
replicate_wild_ignore_table=test_   
只复制以test为始发并且后边跟上任意单个字符的名字的表

注三:假使急需钦命几个db或table时,则只需将命令多次写入

**

2、半同台复制**

是因为Mysql的复制都以依照异步实行的,在异常规情状下不可能保障数据的打响复制,因此在mysql
五.伍随后选择了来自google补丁,能够将Mysql的复制达成半一并情势。所以要求为主服务器加载对应的插件。在Mysql的设置目录下的lib/plugin/目录中保有相应的插件semisync_master.so,semisync_slave.so

在Master和Slave的mysql命令行运转如下命令:

Master:
mysql> install plugin rpl_semi_sync_master soname
‘semisync_master.so’;
mysql> set global rpl_semi_sync_master_enabled = 1;
mysql> set global rpl_semi_sync_master_timeout = 1000;
mysql> show variables like ‘%semi%’;
+————————————+——-+
| Variable_name                      | Value |
+————————————+——-+
| rpl_semi_sync_master_enabled       | ON    |
| rpl_semi_sync_master_timeout       | 1000  |
| rpl_semi_sync_master_trace_level   | 32    |
| rpl_semi_sync_master_wait_no_slave | ON    |
+————————————+——-+

Slave:
mysql> install plugin rpl_semi_sync_slave soname
‘semisync_slave.so’;
mysql> set global rpl_semi_sync_slave_enabled = 1;
mysql> stop slave;
mysql> start slave;
mysql> show variables like ‘%semi%’;
+———————————+——-+
| Variable_name                   | Value |
+———————————+——-+
| rpl_semi_sync_slave_enabled     | ON    |
| rpl_semi_sync_slave_trace_level | 32    |
+———————————+——-+

反省半手拉手是还是不是见效:
Master:
mysql> show global status like ‘rpl_semi%’;
+——————————————–+——-+
| Variable_name                              | Value |
+——————————————–+——-+
| Rpl_semi_sync_master_clients               | 1     |
| Rpl_semi_sync_master_net_avg_wait_time     | 0     |
| Rpl_semi_sync_master_net_wait_time         | 0     |
| Rpl_semi_sync_master_net_waits             | 0     |
| Rpl_semi_sync_master_no_times              | 0     |
| Rpl_semi_sync_master_no_tx                 | 0     |
| Rpl_semi_sync_master_status                | ON    |
| Rpl_semi_sync_master_timefunc_failures     | 0     |
| Rpl_semi_sync_master_tx_avg_wait_time      | 0     |
| Rpl_semi_sync_master_tx_wait_time          | 0     |
| Rpl_semi_sync_master_tx_waits              | 0     |
| Rpl_semi_sync_master_wait_pos_backtraverse | 0     |
| Rpl_semi_sync_master_wait_sessions         | 0     |
| Rpl_semi_sync_master_yes_tx                | 0     |
+——————————————–+——-+
证实半联机成功。

让半协同作用在MySQL每一次运转都活动生效,在Master和Slave的my.cnf中编辑:
Master:
[mysqld]
rpl_semi_sync_master_enabled=1
rpl_semi_sync_master_timeout=1000     #1秒

Slave:
[mysqld]
rpl_semi_sync_slave_enabled=1

也可由此设置全局变量的法子来安装是或不是运维半联合实行插件:
Master:
mysql> set global rpl_semi_sync_master_enabled=1
注销加载插件
mysql> uninstall plugin rpl_semi_sync_master;

Slave:
mysql> set global rpl_semi_sync_slave_enabled = 1;
mysql> uninstall plugin rpl_semi_sync_slave;

**

三、主主复制架构 一、在两台服务器上独家建立三个持有复制权限的用户; Master:*
mysql>grant replication client,replication slave on \
.* to
repl@172.16.4.12 identified by ‘135246’;
mysql>flush privileges;

Slave:
mysql>grant replication client,replication slave on *.* to
repl@172.16.4.11 identified by ‘135246’;
mysql>flush privileges;

贰、修改配置文件:
Master:
[mysqld]
server-id = 11
log-bin = mysql-bin
auto-increment-increment = 2
auto-increment-offset = 1
relay-log=mysql-relay
relay-log-index=mysql-relay.index

Slave:
[mysqld]
server-id = 12
log-bin = mysql-bin
auto-increment-increment = 2
auto-increment-offset = 2
relay-log=mysql-relay
relay-log-index=mysql-relay.index

三、如若这时候两台服务器均为新创制,且无此外写入操作,各服务器只需记下当前和好二进制日志文件及事件地点,以之作为此外的服务器复制起首地方就可以
Master:
mysql> show master status;
+——————+———-+————–+——————+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+——————+———-+————–+——————+
| mysql-bin.000004 |      360 |              |                  |
+——————+———-+————–+——————+

Slave:
mysql> show master status;
+——————+———-+————–+——————+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+——————+———-+————–+——————+
| mysql-bin.000005 |      107 |              |                  |
+——————+———-+————–+——————+

四、各服务器接下去钦点对另一台服务器为和谐的主服务器就能够:
Master:
mysql>change master to \
master_host=’172.16.4.12′,
master_user=’repl’,
master_password=’135246′,
master_log_file=’mysql-bin.000005′,
master_log_pos=107;

Slave:
mysql>change master to \
master_host=’172.16.4.11′,
master_user=’repl’,
master_password=’135246′,
master_log_file=’mysql-bin.000004′,
master_log_pos=360;

五、运营从服务器线程:
Master:
mysql>start slave;

Slave:
mysql>start slave;

到此主主架构已经打响!

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