mysql8.0.31 mgr搭建

groupadd mysql
useradd -r -g mysql mysql
chown mysql:mysql -R /usr/local/mysql

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
ln -s /usr/local/mysql/bin/mysql /usr/bin

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456'
flush privileges;

[mysqld]
datadir=/usr/local/mysql/data
socket=/usr/local/mysql/data/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
#user=root

#开启GTID,必须开启
gtid_mode=ON
#强制GTID的一致性
enforce_gtid_consistency=ON
 
log_bin=binlog
#log_slave_updates=ON
#binlog格式,MGR要求必须是ROW,不过就算不是MGR,也最好用row
binlog_format=row
#server-id必须是唯一的
server-id = 2
#MGR使用乐观锁,所以官网建议隔离级别是RC,减少锁粒度
transaction_isolation = READ-COMMITTED
#因为集群会在故障恢复时互相检查binlog的数据,
#所以需要记录下集群内其他服务器发过来已经执行过的binlog,按GTID来区分是否执行过.
log-slave-updates=1
#binlog校验规则,5.6之后的高版本是CRC32,低版本都是NONE,但是MGR要求使用NONE
binlog_checksum=NONE
#基于安全的考虑,MGR集群要求复制模式要改成slave记录记录到表中,不然就报错
master_info_repository=TABLE
#同上配套
relay_log_info_repository=TABLE

report_host = '192.168.229.188'
 
#组复制设置
#记录事务的算法,官网建议设置该参数使用 XXHASH64 算法
transaction_write_set_extraction = XXHASH64
#plugin_load_add='group_replication.so'
#相当于此GROUP的名字,是UUID值,不能和集群内其他GTID值的UUID混用,可用uuidgen来生成一个新的,
#主要是用来区分整个内网里边的各个不同的GROUP,而且也是这个group内的GTID值的UUID
group_replication_group_name = 'aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa'
#IP地址白名单,默认只添加127.0.0.1,不会允许来自外部主机的连接,按需安全设置
group_replication_ip_whitelist = '127.0.0.1/8,192.168.0.0/16,192.168.229.189,192.168.229.190'
#是否随服务器启动而自动启动组复制,不建议直接启动,怕故障恢复时有扰乱数据准确性的特殊情况
group_replication_start_on_boot = OFF
#本地MGR的IP地址和端口，host:port,是MGR的端口,不是数据库的端口
group_replication_local_address = '192.168.229.188:33081'
#需要接受本MGR实例控制的服务器IP地址和端口,是MGR的端口,不是数据库的端口
group_replication_group_seeds = '192.168.229.188:33081,192.168.229.189:33081,192.168.229.190:33081'
#开启引导模式,添加组成员，用于第一次搭建MGR或重建MGR的时候使用,只需要在集群内的其中一台开启,
group_replication_bootstrap_group = OFF
#是否启动单主模式，如果启动，则本实例是主库，提供读写，其他实例仅提供读,如果为off就是多主模式了
#group_replication_single_primary_mode = ON
#多主模式下,强制检查每一个实例是否允许该操作,如果不是多主,可以关闭
#loose-group_replication_enforce_update_everywhere_checks = OFF



[mysqld_safe]
log-error=/usr/local/mysql/log/mariadb.log
pid-file=/usr/local/mysql/mariadb.pid

#
# include all files from the config directory
#
!includedir /etc/my.cnf.d

SET SQL_LOG_BIN=0;
CREATE USER rpl_user@'%' IDENTIFIED BY 'password';
GRANT REPLICATION SLAVE ON *.* TO rpl_user@'%';
GRANT CONNECTION_ADMIN ON *.* TO rpl_user@'%';
GRANT BACKUP_ADMIN ON *.* TO rpl_user@'%';
GRANT GROUP_REPLICATION_STREAM ON *.* TO rpl_user@'%';
FLUSH PRIVILEGES;
SET SQL_LOG_BIN=1;
CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='password' FOR CHANNEL 'group_replication_recovery';

INSTALL PLUGIN group_replication SONAME 'group_replication.so';

SET GLOBAL group_replication_bootstrap_group=ON;
START GROUP_REPLICATION;
SET GLOBAL group_replication_bootstrap_group=OFF;
SELECT * FROM performance_schema.replication_group_members;  ## 查询组成员

START GROUP_REPLICATION;