############################################################

##############mysql主从架构#################

Server11.

yum install mysql-server -y

vim /etc/my.cnf

log-bin=mysql-bin #启动二进制日志系统

binlog-do-db=test #二进制需要同步的数据库名,如果需要同步多个库,例如要再同步 westos

库,再添加一行“binlog-do-db=westos”,以此类推

server-id=3

#必须为 1 到 232–1 之间的一个正整数值

binlog-ignore-db=mysql #禁止同步 mysql 数据库

/etc/init.d/mysqld start

Mysql

 

查看和授权

mysql主从架构_第1张图片 

 

Server12

 yum install mysql-server -y

 

vim /etc/my.cnf添加两行

 

vsymbolic-links=0

 

server-id=4

 

验证授权之后是否可以登陆

mysql主从架构_第2张图片 

 

/etc/init.d/mysqld start

Mysql

mysql主从架构_第3张图片 

 

出现说明成功了

wKiom1jjONyRbowmAAA0XXUrNBE050.png-wh_50 

 

测试

Server11

mysql

mysql主从架构_第4张图片 

 

 

mysql主从架构_第5张图片 

 

 

mysql主从架构_第6张图片 

登陆server12上的mysql

 

mysql主从架构_第7张图片 

 ##############################################################

###############mysql的gtid机制#############

 

Server11.和server12相同

 /etc/init.d/mysqld stop

 yum remove mysql-server -y

 rm -fr /var/lib/mysql/*

tar xf mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar

yum install -y mysql-community-client-5.7.17-1.el6.x86_64.rpm   mysql-community-common-5.7.17-1.el6.x86_64.rpm mysql-community-libs-5.7.17-1.el6.x86_64.rpm mysql-community-libs-compat-5.7.17-1.el6.x86_64.rpm mysql-community-server-5.7.17-1.el6.x86_64.rpm

/etc/init.d/mysqld start

cat /var/log/mysqld.log | grep password 初始化密码在这

mysql -p

退出并且关掉mysql

 

Server11

vim /etc/my.cnf

 

mysql主从架构_第8张图片 

 

 

Server12

vim /etc/my.cnf

mysql主从架构_第9张图片 

 

 

两个服务器都打开mysql

 

Server11

授权

mysql主从架构_第10张图片 

 

Server12

查看是否授权成功

 

mysql主从架构_第11张图片 

 

 

添加主服务器的相关信息

mysql主从架构_第12张图片 

 

 

 

 

mysql> show slave status\G;

*************************** 1. row ***************************

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 172.25.45.11

                  Master_User: student           ####主服务起的IP、用户名和端口信息

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 450

               Relay_Log_File: server12-relay-bin.000002

                Relay_Log_Pos: 663

        Relay_Master_Log_File: mysql-bin.000001

             Slave_IO_Running: Yes

            Slave_SQL_Running: Yes    IO和SQL线程开启

              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: 450

              Relay_Log_Space: 873

              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: 3

                  Master_UUID: ae5b62c7-1548-11e7-a52c-525400cc54de

             Master_Info_File: /var/lib/mysql/master.info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates

           Master_Retry_Count: 86400

                  Master_Bind:

      Last_IO_Error_Timestamp:

     Last_SQL_Error_Timestamp:

               Master_SSL_Crl:

           Master_SSL_Crlpath:

           Retrieved_Gtid_Set: ae5b62c7-1548-11e7-a52c-525400cc54de:1

            Executed_Gtid_Set: ae5b62c7-1548-11e7-a52c-525400cc54de:1

                Auto_Position: 1

         Replicate_Rewrite_DB:

                 Channel_Name:

           Master_TLS_Version:

1 row in set (0.00 sec)

 

 

查看    /var/lib/mysql/mysqlbinlog mysql-bin.000003

#170330  8:41:02 server id 4  end_log_pos 194 CRC32 0xeb5aadd3 Previous-GTIDs

# ae5b62c7-1548-11e7-a52c-525400cc54de:1-5

两个gtid应该一样

Sever11

 

创建库并且存入相关信息

mysql主从架构_第13张图片 

 

mysql主从架构_第14张图片 

 

Server12查看

mysql主从架构_第15张图片 

 

主从复制成功

 

##########mysql主从的半同步和异步传输日志文件数据##########

 

Mysql版本必须时5.5以上

 

接下来分别在主库和从库执行install  plugin 命令加载插件，并且开启半同步插件，查看插件的安装情况

 

 

 

主库

wKioL1jjOcPxaCAeAACKzqoA8VA347.png-wh_50 

 

从库

mysql主从架构_第16张图片 

 

安装情况

 

wKioL1jjOfbCK38mAAA28PNx2Nw257.png-wh_50 

 

Rpl_semi_sync_master_timeout表示主库等待从库的超时时间，如果在时间内没有收到从库回应，复制切换到异步模式

 

在从库上停止io线程，在此时主库内同步数据，在10秒内自动切换到异步同步数据

wKiom1jjOgDwMGfcAAAjNLPsa2M700.png-wh_50 

 

然而下次继续同步数据时，便不用在等待，直接为异步同步，若打开从库的io线程，主库又恢复半同步复制数据

 

在mysql启动前将全局变量写入到配置文件中，以免忘记设置使半同步不生效

 

主库配置文件

[mysqld]

rpl_semi_sync_master_enabled=1

rpl__semi_sync_master_timeout=10000  ###10秒

从库配置文件

[mysqld]

rpl_semi_sync_slave_enabled=1

 

 

 

 

主库:

mysql> show global variables like '%rpl_semi%';

+-------------------------------------------+------------+

| Variable_name                             | Value      |

+-------------------------------------------+------------+

| rpl_semi_sync_master_enabled              | ON         |

| rpl_semi_sync_master_timeout              | 10000      |

| rpl_semi_sync_master_trace_level          | 32         |

| rpl_semi_sync_master_wait_for_slave_count | 1          |

| rpl_semi_sync_master_wait_no_slave        | ON         |

| rpl_semi_sync_master_wait_point           | AFTER_SYNC |

+-------------------------------------------+------------+

6 rows in set (0.01 sec)

##IO线程关闭后，半同步状态检测的延时（10000ms）

 

mysql> show global status like '%rpl_semi%';

+--------------------------------------------+-------+

| Variable_name                              | Value |

+--------------------------------------------+-------+

| Rpl_semi_sync_master_clients               | 0     |

| 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     |

+--------------------------------------------+-------+

 

 

 

主库

mysql> show global variables like '%rpl_semi%';

+-------------------------------------------+------------+

| Variable_name                             | Value      |

+-------------------------------------------+------------+

| rpl_semi_sync_master_enabled              | OFF        |

| rpl_semi_sync_master_timeout              | 10000      |

| rpl_semi_sync_master_trace_level          | 32         |

| rpl_semi_sync_master_wait_for_slave_count | 1          |

| rpl_semi_sync_master_wait_no_slave        | ON         |

| rpl_semi_sync_master_wait_point           | AFTER_SYNC |

| rpl_semi_sync_slave_enabled               | ON         |

| rpl_semi_sync_slave_trace_level           | 32         |

+-------------------------------------------+------------+

8 rows in set (0.01 sec)

mysql> show global status like '%rpl_semi%';

+--------------------------------------------+-------+

| Variable_name                              | Value |

+--------------------------------------------+-------+

| Rpl_semi_sync_master_clients               | 0     |

| 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              | 1     |

| Rpl_semi_sync_master_no_tx                 | 0     |

| Rpl_semi_sync_master_status                | OFF   |

| 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     |

| Rpl_semi_sync_slave_status                 | OFF   |

+--------------------------------------------+-------+

 

 

############sql线程的并行（多）线程##############

IO线程用于同步日志二进制文件数据

sql线程（原本为单线程）用于回放日志，将二进制文件的在slave上进行再次操作。sql线程在slave上

 

 vim /etc/my.cnf##添加

 15 slave-parallel-type=LOGICAL_CLOCK

 16 slave-parallel-workers=16

 17 master_info_repository=TABLE

 18 relay_log_info_repository=TABLE

 19 relay_log_recovery=ON

 

 

 /etc/init.d/mysqld restart

 mysql -p

mysql主从架构_第17张图片 

 

 

 

 

Msyql-proxy读写分离

 

1.mysql proxy

 

 tar -zxf mysql-proxy-0.8.5-linux-el6-x86-64bit.tar.gz

 mv mysql-proxy-0.8.5-linux-el6-x86-64bit /usr/local/mysql-proxy

cd /usr/local/mysql-proxy

mkdir lua

Mkdir logs

cp /share/doc/mysql-proxy/rw-splitting.lua ./lua

 cp /share/doc/mysql-proxy/admin-sql.lua ./lua

vim /usr/local/mysql-proxy/bin/mysql-proxy.conf

 

[mysql-proxy]

user=root

admin-username=proxy

admin-password=Westos+007

proxy-address=172.25.45.13:4040

proxy-read-only-backend-addresses=172.25.45.12

proxy-backend-addresses=172.25.45.11

proxy-lua-script=/usr/local/mysql-proxy/lua/rw-splitting.lua

#admin-lua-script=/usr/local/mysql-proxy/lua/admin-sql.lua

log-file=/usr/local/mysql-proxy/logs/mysql-proxy.log

log-level=info

daemon=true

keepalive=true

 

 chmod 660 /usr/local/mysql-proxy/bin/mysql-proxy.conf

vim /usr/local/mysql-proxy/lua/rw-splitting.lua

if not proxy.global.config.rwsplit then

        proxy.global.config.rwsplit = {

                min_idle_connections = 1,

                max_idle_connections = 1,

 

                is_debug = false

 

改为1，方便测试

启动MYSQL-PROXY

/usr/lo/usr/local/mysql-proxy/bin/mysql-proxy --defaults-file=/usr/local/mysql-proxy/bin/mysql-proxy.conf

 

netstat -tupln | grep 4040

 

测试读写分离

主服务器

 

grant all on *.* to proxy@'172.25.45.13' identified by 'Westos+007';

 

使用客户端连接mysql-proxy

mysql -u proxy -h 172.25.45.13 -P 4041 -pWestos+007

 

wKioL1jjOinAirnuAAEAoqwY_Xg877.png-wh_50 

 

 

 

################MHA###############3

 

在做好mysql的gtid机制和半同步的基础上

Server1：172.25.45.11  master

Server2：172.25.45.12slave（主从）

Server4：172.25.45.13  slave 从

Server5：172.25.45.14  manager

 

 

1.配置三台机子ssh无密码连接：

ssh-keygen   ##每台机子都要生成自己的公秘钥对

ssh-copy-id -i /root/.ssh/id_rsa.pub [email protected]

ssh-copy-id -i /root/.ssh/id_rsa.pub [email protected]

ssh-copy-id -i /root/.ssh/id_rsa.pub [email protected]

每台机子都要做上述操作

 

 

2.安装mha

所有节点都要安装

 yum install -y perl-DBD-MySQL  

 rpm -ivh mha4mysql-node-0.54-0.el6.noarch.rpm  

管理节点

yum install -y perl-DBD-MySQL perl-Config-Tiny perl-Log-Dispatch perl-Parallel-ForkManager 

rpm -ivh mha4mysql-manager-0.55-0.el6.noarch.rpm 

配置mysql的主从replication：

主从服务器都需要有  vim /etc/my.cnf

binlog-do-db=test

replication-do-db=test

其中在从服务器的配置还需要多添加一行：

Relay_log_purge=0

 

一般情况下，主服务器需要包含binlog-do-db=test，从服务器需要包含replicate-do-db=test，这样主从就可以同步了。但是只是这样配置的话，会报以下错误

All log-bin enabled servers must have same binlog filtering rules (same binlog-do-db and binlog-ignore-db). Check SHOW MASTER STATUS output and set my.cnf correctly

 

 

3.配置mha manage

1，添加管理账号，每台机器都执行以下操作

grant all privileges on *.*  to lzt@'172.25.45.%'  identified by 'Westos+007';  

flush privileges;  

2，配置/etc/mha/app1.cnf，只在管理端做，manage这台机器

mkdir /etc/mha

mkdir -p /var/log/mha/app1

vim /etc/mha/app1.cnf  ##配置如下:

[server default]

manager_log=/var/log/mha/app1/manager.log

manager_workdir=/var/log/mha/app1.log

master_binlog_dir=/var/lib/mysql

user=proxy

Password=Westos+007

ping_interval=2

repl_password=Westos+007

repl_user=lzt

ssh_user=root

 

[server1]

hostname=172.25.45.11

port=3306

 

[server2]

candidate_master=1

check_repl_delay=0

hostname=172.25.45.12

port=3306

 

[server3]

check_repl_delay=0

hostname=172.25.30.45.12

port=3306

 

 

4.检测mha是否配置成功：

 

A.检查ssh登陆：

masterha_check_ssh --conf=/etc/mha/app1.cnf

 

mysql主从架构_第18张图片 

 

B.检测mha manage的监控状况：

mysql主从架构_第19张图片 

 

 

3,管理端常用命令

masterha_check_ssh       检查MHA的SSH配置状况  

masterha_check_repl      检查MySQL复制状况  

masterha_manger          启动MHA  

masterha_check_status    检测当前MHA运行状态  

masterha_master_monitor  检测master是否宕机  

masterha_master_switch   控制故障转移（自动或者手动）  

masterha_conf_host       添加或删除配置的server信息  

mysql主从架构_第20张图片 

 

4.切换：

关闭master ，切换至主备

mysql主从架构_第21张图片