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MySQL高可用架构之MySQL5.7组复制MGR

MySQL高可用架构之MySQL5.7组复制MGR
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规划MGR:
host1.us.oracle.com 10.10.20.95
host2.us.oracle.com 10.10.20.97
host3.us.oracle.com 10.10.20.132
MySQL版本：5.7.21
MySQL实例是33061端口

server-id=330611 330612 330613

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host1：

MySQL实例是33061端口
mysql> select @@port;
+--------+
| @@port |
+--------+
| 33061 |
+--------+
1 row in set (0.01 sec)
[root@host1 ]#cat /etc/hosts
#FOR TEST MGR
10.10.20.132 host3.us.oracle.com
10.10.20.95 host1.us.oracle.com
10.10.20.97 host2.us.oracle.com

vi /data/mysql_33061/my.cnf

 1 [client]
 2 port = 33061
 3 socket = /data/mysql_33061/run/mysql.sock
 4 [mysqld]
 5 port = 33061
 6 socket = /data/mysql_33061/run/mysql.sock
 7 pid_file = /data/mysql_33061/run/mysql.pid
 8 basedir = /usr/local/mysql
 9 datadir = /data/mysql_33061/data
10 default_storage_engine = InnoDB
11 max_allowed_packet = 128M
12 max_connections = 1024
13 open_files_limit = 65535
14 
15 server-id=330611
16 skip-name-resolve
17 lower_case_table_names=1
18 
19 character-set-server = utf8mb4
20 collation-server = utf8mb4_unicode_ci
21 init_connect='SET NAMES utf8mb4'
22 
23 innodb_buffer_pool_size = 4096M
24 innodb_buffer_pool_instances = 8
25 innodb_buffer_pool_load_at_startup = 1
26 innodb_buffer_pool_dump_at_shutdown = 1
27 innodb_file_per_table = 1
28 innodb_flush_log_at_trx_commit = 2
29 innodb_data_home_dir=/data/mysql_33061/data/
30 innodb_log_group_home_dir=/data/mysql_33061/logs/
31 innodb_log_files_in_group=3
32 innodb_log_file_size=512M
33 innodb_data_file_path=ibdata1:512M:autoextend
34 log_slave_updates=1
35 binlog_format=ROW
36 key_buffer_size = 16M
37 innodb_log_buffer_size = 32M
38 innodb_io_capacity = 4000
39 innodb_io_capacity_max = 8000
40 innodb_flush_method = O_DIRECT
41 innodb_print_all_deadlocks = 1
42 
43 log-error = /data/mysql_33061/logs/mysql_error.log
44 log-bin = /data/mysql_33061/logs/mysql_bin
45 slow_query_log = 1
46 slow_query_log_file = /data/mysql_33061/logs/mysql_slow_query.log
47 long_query_time = 2
48 sync_binlog = 600
49 relay_log_recovery = 1
50 
51 tmp_table_size = 64M
52 max_heap_table_size = 64M
53 
54 #FOR MGR 
55 transaction_write_set_extraction = XXHASH64 
56 loose-group_replication_group_name = 'ce9be252-2b71-11e6-b8f4-00212889f856' #不能用主机的GTID
57 loose-group_replication_start_on_boot = off 
58 loose-group_replication_bootstrap_group = off 
59 loose-group_replication_ip_whitelist = '10.10.20.95,10.10.20.132,10.10.20.97'
60 loose-group_replication_local_address = '10.10.20.95:33066' #写自己主机所在IP，端口自选
61 loose-group_replication_group_seeds ='10.10.20.95:33066,10.10.20.97:33066,10.10.20.132:33066'#写MGR组内主机所在IP，端口自选
62 loose-group_replication_single_primary_mode = off #关闭单主模式的参数
63 loose-group_replication_enforce_update_everywhere_checks = off #开启多主模式的参数
64 init_slave = 'set sql_mode=STRICT_ALL_TABLES'
65 #自动启动组复制
66 #loose-group_replication_start_on_boot = on
67 #group_replication_allow_local_disjoint_gtids_join = on
68 
69 #FOR GTID
70 gtid_mode=on
71 enforce_gtid_consistency=on
72 binlog_gtid_simple_recovery=1
73 log_slave_updates=1
74 binlog_checksum=NONE
75 master_info_repository=TABLE
76 relay_log_info_repository=TABLE

my.cnf

mysql>INSTALL PLUGIN group_replication SONAME 'group_replication.so';

mysql>GRANT REPLICATION SLAVE ON *.* TO 'dbsync'@'10.10.%.%' IDENTIFIED BY 'xxxxxxx';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> CHANGE MASTER TO MASTER_USER='dbsync',MASTER_PASSWORD='xxxxxxx' FOR CHANNEL 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (0.27 sec)
mysql> set global group_replication_ip_whitelist="10.10.20.95,10.10.20.132,10.10.20.97";
Query OK, 0 rows affected (0.00 sec)
mysql> SET GLOBAL group_replication_bootstrap_group=ON;
Query OK, 0 rows affected (0.00 sec)
mysql> set auto_increment_offset=5555;
Query OK, 0 rows affected (0.00 sec)
mysql> START GROUP_REPLICATION;
Query OK, 0 rows affected (2.04 sec)

mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-----------------------+-------------+--------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+-----------------------+-------------+--------------+
| group_replication_applier | 57bc1e44-a447-11e8-8e78-5254000f067d | host1.us.oracle.com | 33061 | ONLINE |
+---------------------------+--------------------------------------+-----------------------+-------------+--------------+
1 row in set (0.00 sec)
###########################################################################################

host2:

[root@host2 ]#cat /etc/hosts
#FOR TEST MGR
10.10.20.132 host3.us.oracle.com
10.10.20.95 host1.us.oracle.com
10.10.20.97 host2.us.oracle.com

vi /data/mysql_33061/my.cnf

 1 [client]
 2 port = 33061
 3 socket = /data/mysql_33061/run/mysql.sock
 4 
 5 [mysqld]
 6 port = 33061
 7 socket = /data/mysql_33061/run/mysql.sock
 8 pid_file = /data/mysql_33061/run/mysql.pid
 9 basedir = /usr/local/mysql
10 datadir = /data/mysql_33061/data
11 default_storage_engine = InnoDB
12 max_allowed_packet = 128M
13 max_connections = 1024
14 open_files_limit = 65535
15 
16 skip-name-resolve
17 lower_case_table_names=1
18 
19 character-set-server = utf8mb4
20 collation-server = utf8mb4_unicode_ci
21 init_connect='SET NAMES utf8mb4'
22 
23 innodb_buffer_pool_size = 4096M
24 innodb_buffer_pool_instances = 8
25 innodb_buffer_pool_load_at_startup = 1
26 innodb_buffer_pool_dump_at_shutdown = 1
27 innodb_file_per_table = 1
28 innodb_flush_log_at_trx_commit = 2
29 innodb_data_home_dir=/data/mysql_33061/data/
30 innodb_log_group_home_dir=/data/mysql_33061/logs/
31 innodb_log_files_in_group=3
32 innodb_log_file_size=512M
33 innodb_data_file_path=ibdata1:512M:autoextend
34 log_slave_updates=1
35 binlog_format=ROW
36 key_buffer_size = 16M
37 innodb_log_buffer_size = 32M
38 innodb_io_capacity = 4000
39 innodb_io_capacity_max = 8000
40 innodb_flush_method = O_DIRECT
41 innodb_print_all_deadlocks = 1
42 
43 log-error = /data/mysql_33061/logs/mysql_error.log
44 log-bin = /data/mysql_33061/logs/mysql_bin.log
45 slow_query_log = 1
46 slow_query_log_file = /data/mysql_33061/logs/mysql_slow_query.log
47 long_query_time = 2
48 sync_binlog = 600
49 relay_log_recovery = 1
50 
51 tmp_table_size = 64M
52 max_heap_table_size = 64M
53 
54 server-id=330612
55 
56 #FOR MGR 
57 transaction_write_set_extraction = XXHASH64 
58 loose-group_replication_group_name = 'ce9be252-2b71-11e6-b8f4-00212889f856' #不能用主机的GTID
59 loose-group_replication_start_on_boot = off 
60 loose-group_replication_bootstrap_group = off 
61 loose-group_replication_ip_whitelist = '10.10.20.95,10.10.20.132,10.10.20.97'
62 loose-group_replication_local_address = '10.10.20.97:33066' #写自己主机所在IP，端口自选
63 loose-group_replication_group_seeds ='10.10.20.95:33066,10.10.20.97:33066,10.10.20.132:33066'#写MGR组内主机所在IP，端口自选
64 loose-group_replication_single_primary_mode = off #关闭单主模式的参数
65 loose-group_replication_enforce_update_everywhere_checks = off #开启多主模式的参数
66 init_slave = 'set sql_mode=STRICT_ALL_TABLES'
67 
68 #FOR GTID
69 gtid_mode=on
70 enforce_gtid_consistency=on
71 binlog_gtid_simple_recovery=1
72 log_slave_updates=1
73 binlog_checksum=NONE
74 master_info_repository=TABLE
75 relay_log_info_repository=TABLE

my.cnf

mysql>INSTALL PLUGIN group_replication SONAME 'group_replication.so';

mysql> set auto_increment_offset=5555;
Query OK, 0 rows affected (0.00 sec)

mysql> set global group_replication_allow_local_disjoint_gtids_join=ON;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> START GROUP_REPLICATION;
Query OK, 0 rows affected, 1 warning (6.88 sec)

###########################################################################################
host3:
[root@host3 ]#cat /etc/hosts
#FOR TEST MGR
10.10.20.132 host3.us.oracle.com
10.10.20.95 host1.us.oracle.com
10.10.20.97 host2.us.oracle.com

vi /data/mysql_33061/my.cnf

 1 [client]
 2 port = 33061
 3 socket = /data/mysql_33061/run/mysql.sock
 4 
 5 [mysqld]
 6 port = 33061
 7 socket = /data/mysql_33061/run/mysql.sock
 8 pid_file = /data/mysql_33061/run/mysql.pid
 9 basedir = /usr/local/mysql
10 datadir = /data/mysql_33061/data
11 default_storage_engine = InnoDB
12 max_allowed_packet = 128M
13 max_connections = 1024
14 open_files_limit = 65535
15 
16 skip-name-resolve
17 lower_case_table_names=1
18 
19 character-set-server = utf8mb4
20 collation-server = utf8mb4_unicode_ci
21 init_connect='SET NAMES utf8mb4'
22 
23 
24 innodb_buffer_pool_size = 4096M
25 innodb_buffer_pool_instances = 8
26 innodb_buffer_pool_load_at_startup = 1
27 innodb_buffer_pool_dump_at_shutdown = 1
28 innodb_file_per_table = 1
29 innodb_flush_log_at_trx_commit = 2
30 innodb_data_home_dir=/data/mysql_33061/data/
31 innodb_log_group_home_dir=/data/mysql_33061/logs/
32 innodb_log_files_in_group=3
33 innodb_log_file_size=512M
34 innodb_data_file_path=ibdata1:512M:autoextend
35 log_slave_updates=1
36 binlog_format=ROW
37 key_buffer_size = 16M
38 innodb_log_buffer_size = 32M
39 innodb_io_capacity = 4000
40 innodb_io_capacity_max = 8000
41 innodb_flush_method = O_DIRECT
42 innodb_print_all_deadlocks = 1
43 
44 log-error = /data/mysql_33061/logs/mysql_error.log
45 log-bin = /data/mysql_33061/logs/mysql_bin.log
46 slow_query_log = 1
47 slow_query_log_file = /data/mysql_33061/logs/mysql_slow_query.log
48 long_query_time = 2
49 sync_binlog = 600
50 relay_log_recovery = 1
51 
52 tmp_table_size = 64M
53 max_heap_table_size = 64M
54 
55 server-id=330613
56 
57 #FOR MGR 
58 transaction_write_set_extraction = XXHASH64 
59 loose-group_replication_group_name = 'ce9be252-2b71-11e6-b8f4-00212889f856' #不能用主机的GTID
60 loose-group_replication_start_on_boot = off 
61 loose-group_replication_bootstrap_group = off 
62 loose-group_replication_ip_whitelist = '10.10.20.95,10.10.20.132,10.10.20.97'
63 loose-group_replication_local_address = '10.10.20.132:33066' #写自己主机所在IP，端口自选
64 loose-group_replication_group_seeds ='10.10.20.95:33066,10.10.20.97:33066,10.10.20.132:33066'#写MGR组内主机所在IP，端口自选
65 loose-group_replication_single_primary_mode = off #关闭单主模式的参数
66 loose-group_replication_enforce_update_everywhere_checks = off #开启多主模式的参数
67 init_slave = 'set sql_mode=STRICT_ALL_TABLES'
68 
69 #FOR GTID
70 gtid_mode=on
71 enforce_gtid_consistency=on
72 binlog_gtid_simple_recovery=1
73 log_slave_updates=1
74 binlog_checksum=NONE
75 master_info_repository=TABLE
76 relay_log_info_repository=TABLE

my.cnf

mysql>INSTALL PLUGIN group_replication SONAME 'group_replication.so';

mysql> CHANGE MASTER TO MASTER_USER='dbsync',MASTER_PASSWORD='xxxxxxx' FOR CHANNEL 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (0.56 sec)
mysql> set global group_replication_ip_whitelist="10.10.20.95,10.10.20.132,10.10.20.97";
Query OK, 0 rows affected (0.00 sec)
mysql> set auto_increment_offset=5555;
Query OK, 0 rows affected (0.00 sec)
mysql> set global group_replication_allow_local_disjoint_gtids_join=ON;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> START GROUP_REPLICATION;
Query OK, 0 rows affected, 1 warning (3.27 sec)

查询主节点：

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

查看当前实例是否有延迟等性能问题（通过队列深度判断）的方法：
select * from performance_schema.replication_group_member_statsG;
通过查看COUNT_TRANSACTIONS_IN_QUEUE的值，可以判断等待处理的事务数。

参考：

http://www.cnblogs.com/xinysu/p/6674832.html

https://www.cnblogs.com/manger/p/7211932.html

https://www.cnblogs.com/lemon-le/p/9241984.html

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原文地址：https://www.cnblogs.com/elontian/p/9499085.html