MySQL Group Replication 部署

1、环境介绍：

          redhat 6.5、mysql 5.7及以上

2、安装Mysql

3、安装完成mysql 后，修改MySQL配置文件

     第一台mysql服务器配置文件：

     [mysqld]
########basic settings########

server_id=12001
port = 3306
character_set_server=utf8mb4
skip_name_resolve = 1
max_connections = 800
max_connect_errors = 1000
basedir=/usr
datadir=/data
transaction_isolation = READ-COMMITTED
explicit_defaults_for_timestamp = 1
join_buffer_size = 134217728
tmp_table_size = 67108864
max_allowed_packet = 16777216
sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"
interactive_timeout = 1800
wait_timeout = 1800
read_buffer_size = 16777216
read_rnd_buffer_size = 33554432
sort_buffer_size = 33554432
########log settings########
log_error = error.log
slow_query_log = 1
slow_query_log_file = slow.log
log_queries_not_using_indexes = 1
log_slow_admin_statements = 1
log_slow_slave_statements = 1
log_throttle_queries_not_using_indexes = 10
expire_logs_days = 90
long_query_time = 2
min_examined_row_limit = 100

########innodb settings########
innodb_page_size = 8192
innodb_buffer_pool_size = 6G
innodb_buffer_pool_instances = 8
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_lru_scan_depth = 2000
innodb_lock_wait_timeout = 5
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_flush_method = O_DIRECT
innodb_file_format = Barracuda
innodb_file_format_max = Barracuda
innodb_undo_logs = 128
innodb_undo_tablespaces = 3
innodb_flush_neighbors = 1
innodb_log_file_size = 4G
innodb_log_buffer_size = 16777216
innodb_purge_threads = 4
innodb_large_prefix = 1
innodb_thread_concurrency = 64
innodb_print_all_deadlocks = 1
innodb_strict_mode = 1
innodb_sort_buffer_size = 67108864
[mysqld-5.7]
innodb_buffer_pool_dump_pct = 40
innodb_page_cleaners = 4
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 2G
innodb_purge_rseg_truncate_frequency = 128
binlog_gtid_simple_recovery=1
log_timestamps=system
transaction_write_set_extraction=MURMUR32
show_compatibility_56=on

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
 
# group replication config
transaction_write_set_extraction=XXHASH64
loose-group_replication_group_name="e4668cea-d7ca-11e6-86b5-18a99b76310d"                        
loose-group_replication_start_on_boot=off
loose-group_replication_local_address= "10.1.1.4.139:24901"
loose-group_replication_group_seeds= "10.1.1.4.139:24901,10.1.1.4.140:24901"
loose-group_replication_bootstrap_group= off
loose-group_replication_single_primary_mode=FALSE
loose-group_replication_enforce_update_everywhere_checks= TRUE

第二台服务器：配置文件注意修改

loose-group_replication_local_address= "10.1.1.4.139:24901"

server_id=12001

配置好后，重启mysql 服务 service mysqld restart

4、登录mysql 创建复制账户，安装group_replication 组件

所有服务器都需要执行

SET SQL_LOG_BIN=0;
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.%' IDENTIFIED BY '111111';  
SET SQL_LOG_BIN=1;
INSTALL PLUGIN group_replication SONAME 'group_replication.so';
CHANGE MASTER TO MASTER_USER='repl', MASTER_PASSWORD='111111' FOR CHANNEL 'group_replication_recovery';

5、group_replication 第一台服务器启动

SET GLOBAL group_replication_bootstrap_group = ON;
START GROUP_REPLICATION;
SET GLOBAL group_replication_bootstrap_group=OFF;
SELECT * FROM performance_schema.replication_group_members;

6、后续服务器启动

set global group_replication_allow_local_disjoint_gtids_join=ON;
START GROUP_REPLICATION;