005MGR mysql group replication 5.7.19部署

四、主节点配置MySQL Group Replication --多主模式

          0、配置hosts文件、防火墙端口开放

                vi /etc/hostname

                          localhost.localdomain.6

vi /etc/hosts

192.168.123.6 localhost.localdomain.6

192.168.123.7 localhost.localdomain.7

192.168.123.9 localhost.localdomain.9

开放端口

firewall-cmd --zone=public --add-port=33061/tcp --permanent;

firewall-cmd --reload

1、/etc/my.cnf

# Group Replication

server_id = 1236

gtid_mode = ON

enforce_gtid_consistency = ON

master_info_repository = TABLE

relay_log_info_repository = TABLE

binlog_checksum = NONE

log_slave_updates = ON

log_bin = binlog

binlog_format= ROW

transaction_write_set_extraction = XXHASH64

loose-group_replication_group_name = 'ce9be252-2b71-11e6-b8f4-00212844f856'

loose-group_replication_start_on_boot = on

loose-group_replication_local_address = '192.168.123.6:33061'

loose-group_replication_group_seeds ='192.168.123.6:33061,192.168.123.7:33062,192.168.123.9:33063'

loose-group_replication_bootstrap_group = off

# 关闭单主模式

loose-group_replication_single_primary_mode = off

# 开启多主模式

loose-group_replication_enforce_update_everywhere_checks = on

2、service mysqld restart

          service mysqld restart

3、建立复制账号

mysql -u root -p

set SQL_LOG_BIN=0;

create user repl@'%' identified by 'data';

grant replication slave on *.* to repl@'%';

flush privileges;

set SQL_LOG_BIN=1;

--构建group replication集群

change master to master_user='repl',master_password='data' for channel 'group_replication_recovery';

4、安装group replication插件

mysql -u root -p

install PLUGIN group_replication SONAME 'group_replication.so';

--查看group replication组件

show plugins;

5、启动主节点的group replication

mysql -u root -p

--设置group_replication_bootstrap_group为ON是为了标示以后加入集群的服务器以这台服务器为基准，以后加入的就不需要设置。

#设置网段白名单

set global  group_replication_ip_whitelist="192.168.123.0/24,127.0.0.1/32,192.168.123.0/16,192.168.123.1/24";

--作为首个节点启动mgr集群

change master to master_user='repl',master_password='data' for channel 'group_replication_recovery';

#这句只有在第一次执行引导组的时候执行.

set global group_replication_bootstrap_group=ON;

start group_replication;

set global group_replication_bootstrap_group=OFF;

6、查看mgr的状态

mysql -u root -p

--查询表performance_schema.replication_group_members

select * from performance_schema.replication_group_members;

五、从节点配置MySQL Group Replication

    

    

0、配置hosts文件、防火墙端口开放

                 vi /etc/hostname

                          localhost.localdomain.7

vi /etc/hosts

192.168.123.6 localhost.localdomain.6

192.168.123.7 localhost.localdomain.7

192.168.123.9 localhost.localdomain.9

开放端口

firewall-cmd --zone=public --add-port=33062/tcp --permanent;
firewall-cmd --reload

1、/etc/my.cnf

# Group Replication

server_id = 1237

gtid_mode = ON

enforce_gtid_consistency = ON

enforce_gtid_consistency = ON

master_info_repository = TABLE

relay_log_info_repository = TABLE

binlog_checksum = NONE

log_slave_updates = ON

log_bin = binlog

binlog_format= ROW

transaction_write_set_extraction = XXHASH64

loose-group_replication_group_name = 'ce9be252-2b71-11e6-b8f4-00212844f856'

loose-group_replication_start_on_boot = off

loose-group_replication_local_address = '192.168.123.7:33062'

loose-group_replication_group_seeds ='192.168.123.6:33061,192.168.123.7:33062,192.168.123.9:33063'

loose-group_replication_bootstrap_group = off

# 关闭单主模式

loose-group_replication_single_primary_mode = off

# 开启多主模式

loose-group_replication_enforce_update_everywhere_checks = on

2、service mysqld restart

3、建立复制账号

mysql -u root -p

set SQL_LOG_BIN=0;

create user repl@'%' identified by 'data';

grant replication slave on *.* to repl@'%';

flush privileges;

set SQL_LOG_BIN=1;

--构建group replication集群

change master to master_user='repl',master_password='data' for channel 'group_replication_recovery';

4、安装group replication插件

mysql -u root -p

install PLUGIN group_replication SONAME 'group_replication.so';

--查看group replication组件

show plugins;

5、把实例添回到主节点的复制组

mysql -u root -p

set global  group_replication_ip_whitelist="192.168.123.0/24,127.0.0.1/32,192.168.123.0/16,192.168.123.1/24";

change master to master_user='repl',master_password='data' for channel 'group_replication_recovery';

set global group_replication_allow_local_disjoint_gtids_join=ON;#有时不需要加

start group_replication;

6、在主节点查看mgr状态

mysql -u root -p

分区工作笔记的第 5 页

--查询表performance_schema.replication_group_members

select * from performance_schema.replication_group_members;

select variable_value from performance_schema.global_status where variable_name='group_replication_primary_member';

先备份后清理binlog日志

show master status\G 

show slave status\G

purge master logs to 'mysql-bin.000022'; //删除指定日志文件的日志索引中binlog日志文件

set global transaction_write_set_extraction=OFF;

set   global   transaction_write_set_extraction=XXHASH64;

/home/mysql/bin/mysqldump --all-databases --set-gtid-purged=ON --single-transaction -uroot -p > /home/mysql1236.sql;

在source那边，执行：

flush logs;
show master status;

在target端，执行：

CHANGE MASTER TO MASTER_LOG_FILE='testdbbinlog.000008',MASTER_LOG_POS=107;
slave start;
show slave status \G

恢复： https://www.cnblogs.com/cenalulu/p/4309009.html

跳过已删除过程，恢复

主数据库执行： show global variables like '%gtid%' ;

从库执行，多个用逗号分隔，支持1-10：set global gtid_purged = '24024e52-bd95-11e4-9c6d-926853670d0b:1' ;

 ce9be252-2b71-11e6-b8f4-00212844f856:1-11 

7、故障 恢复

                 https://blog.csdn.net/d6619309/article/details/61917089

        从主库dump到从库，从库reset master，start group_replication

来自为知笔记(Wiz)