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详细介绍MySQLGroupReplication[Multi-PrimaryMode]的搭建部署过程(图文)

时间:2021-07-01 10:21:17 帮助过:42人阅读

1,关于MySQL Group Replication

基于组的复制(Group-basedReplication)是一种被使用在容错系统中的技术。Replication-group(复制组)是由能够相互通信的多个服务器(节点)组成的。

在通信层,Groupreplication实现了一系列的机制:比如原子消息(atomicmessage delivery)和全序化消息(totalorderingof messages)。这些原子化,抽象化的机制,为实现更先进的数据库复制方案提供了强有力的支持。

MySQL Group Replication正是基于这些技术和概念,实现了一种多主全更新的复制协议。

简而言之,一个Replication-group就是一组节点,每个节点都可以独立执行事务,而读写事务则会在于group内的其他节点进行协调之后再commit。

因此,当一个事务准备提交时,会自动在group内进行原子性的广播,告知其他节点变更了什么内容/执行了什么事务。

这种原子广播的方式,使得这个事务在每一个节点上都保持着同样顺序。

这意味着每一个节点都以同样的顺序,接收到了同样的事务日志,所以每一个节点以同样的顺序重演了这些事务日志,最终整个group保持了完全一致的状态。

然而,不同的节点上执行的事务之间有可能存在资源争用。这种现象容易出现在两个不同的并发事务上。

假设在不同的节点上有两个并发事务,更新了同一行数据,那么就会发生资源争用。

面对这种情况,GroupReplication判定先提交的事务为有效事务,会在整个group里面重演,后提交的事务会直接中断,或者回滚,最后丢弃掉。

因此,这也是一个无共享的复制方案,每一个节点都保存了完整的数据副本。看如下图片01.png,描述了具体的工作流程,能够简洁的和其他方案进行对比。这个复制方案,在某种程度上,和数据库状态机(DBSM)的Replication方法比较类似。

2,安装mysql 5.7.17

官方下载,不过官方只保留最新的version,5.7.17这个url地址不一定长期有效,所以,需要的不一定有,我这里在百度云盘保留了下来,版本是5.7.17,可以随时去下载使用,

在三台db服务器上面设置/etc/hosts映射,如下:

192.168.121.71    db1                                                                                                            
192.168.121.111    db2
192.168.121.24    db3

安装的数据库服务器:

数据库服务器地址

端口

数据目录

Server-id

192.168.121.71(db1)

3317

/data/mysql/data

12001

192.168.121.111(db2)

3317

/data/mysql/data

12002

192.168.121.24(db3)

3317

/data/mysql/data

12003


3
,创建复制环境

设置hostname和ip映射

在db1、db2、db3上都设置

vim /etc/hosts
192.168.121.71 db1 hch_test_dbm2_121_71                                           
192.168.121.111 db2 bpe_service
192.168.121.24 db3 hch_test_web_1_24


在db1/db2/db3上建立复制账号:

mysql> SET SQL_LOG_BIN=0;
Query OK, 0 rows affected (0.00 sec)
 
mysql>
mysql> GRANT REPLICATION SLAVE ON *.*  TO 'repl'@'192.168.%' IDENTIFIED BY 'rlpbright_1927@ys';
Query OK, 0 rows affected, 1 warning  (0.00 sec)
 
mysql>  
mysql> SET SQL_LOG_BIN=1;
Query OK, 0 rows affected (0.00 sec)
 
mysql>

4,安装group replication插件

在db1、db2、db3上依次安装group replication插件

mysql> INSTALL PLUGIN group_replication  SONAME 'group_replication.so';                         
Query OK, 0 rows affected (0.01 sec)
 
mysql>

plugin-load=group_replication或者直接在配置文件my.cnf中配置:

查看group replication组件

mysql> show plugins;                                                                                                        
+----------------------------+----------+--------------------+----------------------+---------+
| Name                       | Status   | Type               | Library              | License |
+----------------------------+----------+--------------------+----------------------+---------+
| binlog                     | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| mysql_native_password      | ACTIVE   | AUTHENTICATION     | NULL                 | GPL     |
| sha256_password            | ACTIVE   | AUTHENTICATION     | NULL                 | GPL     |
| MyISAM                     | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| PERFORMANCE_SCHEMA         | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| InnoDB                     | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| INNODB_TRX                 | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_LOCKS               | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_LOCK_WAITS          | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_CMP                 | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_CMP_RESET           | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_CMPMEM              | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_CMPMEM_RESET        | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_CMP_PER_INDEX       | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_CMP_PER_INDEX_RESET | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_BUFFER_PAGE         | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_BUFFER_PAGE_LRU     | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_BUFFER_POOL_STATS   | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_TEMP_TABLE_INFO     | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_METRICS             | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_FT_DEFAULT_STOPWORD | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_FT_DELETED          | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_FT_BEING_DELETED    | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_FT_CONFIG           | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_FT_INDEX_CACHE      | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_FT_INDEX_TABLE      | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_TABLES          | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_TABLESTATS      | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_INDEXES         | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_COLUMNS         | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_FIELDS          | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_FOREIGN         | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_FOREIGN_COLS    | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_TABLESPACES     | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_DATAFILES       | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| INNODB_SYS_VIRTUAL         | ACTIVE   | INFORMATION SCHEMA | NULL                 | GPL     |
| MRG_MYISAM                 | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| MEMORY                     | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| CSV                        | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| BLACKHOLE                  | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| partition                  | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| FEDERATED                  | DISABLED | STORAGE ENGINE     | NULL                 | GPL     |
| ARCHIVE                    | ACTIVE   | STORAGE ENGINE     | NULL                 | GPL     |
| ngram                      | ACTIVE   | FTPARSER           | NULL                 | GPL     |
| group_replication          | ACTIVE   | GROUP REPLICATION  | group_replication.so | GPL     |
+----------------------------+----------+--------------------+----------------------+---------+
45 rows in set (0.00 sec)
 
mysql>


看到有group_replication ACTIVE,表示插group_replication插件安装成功。

5,配置group replication参数

确保binlog_formatrow格式。

mysql> show variables like 'binlog_format';                                             
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| binlog_format | ROW   |
+---------------+-------+
1 row in set (0.00 sec)
 
mysql>

两种配置方式,在线添加 OR 配置文件

(1) db1上的my.cnf配置:
# replication config
server_id=12001
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= "db1:24901"
loose-group_replication_group_seeds=  "db1:24901,db2:24902,db3:24903"
loose-group_replication_bootstrap_group=  off
loose-group_replication_single_primary_mode=FALSE
loose-group_replication_enforce_update_everywhere_checks=  TRUE
 
(2)db2上的my.cnf配置:
# replication config
server_id=12002
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= "db2:24902"
loose-group_replication_group_seeds=  "db1:24901,db2:24902,db3:24903"
loose-group_replication_bootstrap_group=  off
loose-group_replication_single_primary_mode=FALSE
loose-group_replication_enforce_update_everywhere_checks=  TRUE
 
 
(3)db3上的my.cnf配置:
# replication config
server_id=12003
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= "db3:24903"
loose-group_replication_group_seeds=  "db1:24901,db2:24902,db3:24903"
loose-group_replication_bootstrap_group=  off
loose-group_replication_single_primary_mode=FALSE
loose-group_replication_enforce_update_everywhere_checks=  TRUE

配置完后,重启3个db上的mysql服务

Db1启动:

[root@hch_test_dbm2_121_71 ~]# service  mysqld start                                     
Starting MySQL..                                           [确定]
[root@hch_test_dbm2_121_71 ~]#

Db2启动:

[root@bpe_service ~]# service mysqld  start
Starting MySQL..                                           [确定]                                                     
[root@bpe_service ~]#


Db3启动:

[root@hch_test_web_1_24 ~]# service  mysqld start                                            
Starting MySQL..                                           [确定]
[root@hch_test_web_1_24 ~]#

6,启动mgr集群

构建之前,保证db1、db2、db3的read_only是关闭的

开始构建group replication集群,通常操作命令

mysql>   CHANGE MASTER TO MASTER_USER='repl',  MASTER_PASSWORD='rlpbright_1927@ys' FOR CHANNEL 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings  (0.02 sec)
 
mysql>

db1上建立基本主库master库:

# 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。

mysql> SET GLOBAL group_replication_bootstrap_group = ON;
Query OK, 0 rows affected (0.00 sec)
 
mysql>  START GROUP_REPLICATION;
Query OK, 0 rows affected (1.03 sec)
 
mysql> SET GLOBAL group_replication_bootstrap_group=OFF;
Query OK, 0 rows affected (0.00 sec)
 
mysql>
mysql>  SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| CHANNEL_NAME              | MEMBER_ID    | MEMBER_HOST          | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| group_replication_applier | 3381d155-d7d1-11e6-94f7-b8ca3af6e36c | hch_test_dbm2_121_71 |        3317 | ONLINE      |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
1 row in set (0.00 sec)
 
mysql>

Db2上启动group_replication:

Db2上mysql命令行上执行启动:

mysql>   START GROUP_REPLICATION;
Query OK, 0 rows affected (1.02 sec)
 
mysql>

db1后台error log日志显示,看到db2加入进来了,进了group:

2017-01-11T07:51:40.623093Z 0 [Note]  Plugin group_replication reported: 'Marking group replication view change  with view_id 14841207424144277:8'
2017-01-11T07:51:40.650962Z 21 [Note]  Start binlog_dump to master_thread_id(21) slave_server(12002), pos(, 4)
2017-01-11T07:51:40.687441Z 0 [Note]  Plugin group_replication reported: 'The member with address bpe_service:3317  was 
declared online within the replication group'
2017-01-11T07:52:40.651481Z 21 [Note]  Aborted connection 21 to db: 'unconnected' user: 'repl' host:  '192.168.121.111' (failed on flush_net())

再去master库db1上,查看group_replication成员,会有db2的显示,看到MEMBER_STATE都是ONLINE,表示都是MASTER:

mysql>  SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| CHANNEL_NAME              | MEMBER_ID       | MEMBER_HOST          | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| group_replication_applier | 3381d155-d7d1-11e6-94f7-b8ca3af6e36c | hch_test_dbm2_121_71 |        3317 | ONLINE       |
| group_replication_applier | 84dba8ff-d7d2-11e6-aa9a-18a99b76310d | bpe_service          |        3317 | ONLINE       |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
2 rows in set (0.00 sec)
 
mysql>


db3上启动group_replication:

Db3命令行上执行:

mysql> set global  group_replication_allow_local_disjoint_gtids_join=ON;
Query OK, 0 rows affected (0.00 sec)
 
mysql> start group_replication;
Query OK, 0 rows affected (1.99 sec)
 
mysql>

再去master库db1上,查看group_replication成员,会有db3的显示,而且已经是ONLINE了

mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| CHANNEL_NAME              | MEMBER_ID                            | MEMBER_HOST          | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| group_replication_applier | 21750571-d7d3-11e6-91e2-18a99b763071 | hch_test_web_1_24    |        3317 | ONLINE       |
| group_replication_applier | 3381d155-d7d1-11e6-94f7-b8ca3af6e36c | hch_test_dbm2_121_71 |        3317 | ONLINE       |
| group_replication_applier | 84dba8ff-d7d2-11e6-aa9a-18a99b76310d | bpe_service          |        3317 | ONLINE       |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
3 rows in set (0.00 sec)
 
mysql>

db1上后台error log显示:

2017-01-11T08:13:05.972276Z 0 [Note]  Plugin group_replication reported: 'getstart group_id 8da193f6'
2017-01-11T08:13:08.146144Z 0 [Note]  Plugin group_replication reported: 'Marking group replication view change  with view_id 14841207424144277:11'
2017-01-11T08:13:08.174808Z 25 [Note]  Start binlog_dump to master_thread_id(25) slave_server(12003), pos(, 4)
2017-01-11T08:13:08.218338Z 0 [Note]  Plugin group_replication reported: 'The member with address  
hch_test_web_1_24:3317 was declared online within the replication group'
2017-01-11T08:14:08.175308Z 25 [Note]  Aborted connection 25 to db: 'unconnected' user: 'repl' host:  '192.168.121.24' (failed on flush_net())

最后查看集群状态:

mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| CHANNEL_NAME              | MEMBER_ID                            | MEMBER_HOST          | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| group_replication_applier | 3d872c2e-d670-11e6-ac1f-b8ca3af6e36c | hch_test_dbm2_121_71 |        3317 | ONLINE       |
| group_replication_applier | ef8ac2de-d671-11e6-9ba4-18a99b763071 | hch_test_web_1_24    |        3317 | ONLINE       |
| group_replication_applier | fdf2b02e-d66f-11e6-98a8-18a99b76310d | bpe_service          |        3317 | ONLINE       |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
3 rows in set (0.00 sec)
 
mysql>

7,验证集群复制功能

测试,在master库db1上建立测试库db1,测试表t1,录入一条数据

mysql> create database db1;
Query OK, 1 row affected (0.00 sec)
 
mysql> create table db1.t1(id int,cn  varchar(32));
Query OK, 0 rows affected (0.02 sec)
 
mysql>
mysql> insert into t1(id,cn)values(  1,'a');
ERROR 3098 (HY000): The table does not  comply with the requirements by an external plugin.
mysql>
mysql>
# 这里原因是group_replaction环境下面,表必须有主键不然不允许往里insert值。所以修改表t1,将id字段设置程主键即可。
mysql> alter table t1 modify id int  primary key;
Query OK, 0 rows affected (0.02 sec)
Records: 0  Duplicates: 0  Warnings: 0

然后在db2上执行insert操作,则成功

然后再db3上执行insert操作,则成功

在db1、db2、db3分部录入的数据,再分表去db1、db2、db3上查看t1表的数据,数据都已经复制同步过来了,已经实现了group里面多成员member多处写操作。

8 添加新的成员

简要步骤:

(1) 安装mysql实例

(2) 准备my.cnf

#replication
server_id=12001 # 这个是随着新服务器的添加会变化
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
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=  "db1:24901" # 这个是随着新服务器的添加会变化
loose-group_replication_group_seeds=  "db1:24901,db2:24902,db3:24903"# 这个是随着新服务器的添加会变化
loose-group_replication_bootstrap_group=  off
loose-group_replication_single_primary_mode=FALSE
loose-group_replication_enforce_update_everywhere_checks=  TRUE

(3) 启动mysql实例,service mysqld start;

(4) 开启group replication

SET SQL_LOG_BIN=0;  # 在建立复制账号的时候,不需要进入binlog日志
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.%' IDENTIFIED BY  'rlpbright_1927@ys';
SET SQL_LOG_BIN=1;
CHANGE MASTER TO MASTER_USER='repl',  MASTER_PASSWORD='rlpbright_1927@ys' FOR CHANNEL 'group_replication_recovery';
START group_replication;
SELECT * FROM performance_schema.replication_group_members;


(5)验证组成员,SELECT * FROM performance_schema.replication_group_members;

9,管理操作命令

查看group状态信息:SELECT * FROM performance_schema.replication_group_members;

查询replication协议的其它数据:select * from performance_schema.replication_group_member_stats\G

查看后台进程2个:

[root@hch_test_dbm2_121_71 soft]# netstat  -ntpl|grep mysql
tcp         0      0 0.0.0.0:24901    0.0.0.0:*  LISTEN      3665/mysqld        
tcp         0      0 :::3317       :::*  LISTEN      3665/mysqld        
[root@hch_test_dbm2_121_71 soft]#


组复制成员状态表:select * from performance_schema.replication_group_member_stats;查看的是当前的状态:

performance_schema.replication_applier_status


10,问题记录

10.1问题记录一

Db2的mysql窗口报错:
mysql> START GROUP_REPLICATION;
ERROR 3092 (HY000): The server is not  configured properly to be an active member of the group. Please see more  details on error log.
mysql>
 
db2的error log信息如下:
2017-01-11T07:57:41.161360Z 0 [ERROR]  Plugin group_replication reported: 'This member has more executed  
transactions than those present in the group. Local transactions:  84dba8ff-d7d2-11e6-aa9a-18a99b76310d:1 > 
Group transactions:  3381d155-d7d1-11e6-94f7-b8ca3af6e36c:1,
e4668cea-d7ca-11e6-86b5-18a99b76310d:1-3'
2017-01-11T07:57:41.161430Z 0 [ERROR]  Plugin group_replication reported: 'The member contains transactions not  
present in the group. The member will now exit the group.'
2017-01-11T07:57:41.161445Z 0 [Note]  Plugin group_replication reported: 'To force this member into the group you  
can use the group_replication_allow_local_disjoint_gtids_join option'
2017-01-11T07:57:41.161589Z 3 [Note]  Plugin group_replication reported: 'Going to wait for view modification'
2017-01-11T07:57:41.162126Z 0 [Note]  Plugin group_replication reported: 'getstart group_id 8da193f6'
2017-01-11T07:57:44.508236Z 0 [Note]  Plugin group_replication reported: 'state 4330 action xa_terminate'
2017-01-11T07:57:44.508429Z 0 [Note]  Plugin group_replication reported: 'new state x_start'
2017-01-11T07:57:44.508561Z 0 [Note]  Plugin group_replication reported: 'state 4257 action xa_exit'
2017-01-11T07:57:44.508720Z 0 [Note]  Plugin group_replication reported: 'Exiting xcom thread'
2017-01-11T07:57:44.508746Z 0 [Note]  Plugin group_replication reported: 'new state x_start'
2017-01-11T07:57:49.549137Z 3 [Note]  Plugin group_replication reported: 'auto_increment_increment is reset to 1'
2017-01-11T07:57:49.549192Z 3 [Note]  Plugin group_replication reported: 'auto_increment_offset is reset to 1'
2017-01-11T07:57:49.549472Z 23 [Note]  Error reading relay log event for channel 'group_replication_applier': 
slave  SQL thread was killed
2017-01-11T07:57:49.550037Z 20 [Note] Plugin  group_replication reported: 'The group replication applier thread was killed'
 
【解决办法】设置group_replication_allow_local_disjoint_gtids_join为ON
mysql> set global  group_replication_allow_local_disjoint_gtids_join=ON;
Query OK, 0 rows affected (0.00 sec)
 
mysql> START GROUP_REPLICATION;
Query OK, 0 rows affected (5.52 sec)
 
mysql>

10.2问题记录二

Sql界面显示状态为ERROR:

Errorlog显示:

2017-01-11T08:07:34.587378Z 12 [Note]  'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'.  
Previous state master_host='bpe_service', master_port= 3317,  master_log_file='', master_log_pos= 4, master_bind=''. New state  
master_host='<NULL>', master_port= 0, master_log_file='',  master_log_pos= 4, master_bind=''.
2017-01-11T08:07:34.591679Z 12 [ERROR]  Plugin group_replication reported: 'Fatal error during the Recovery process  of Group Replication. 
The server will leave the group.'
2017-01-11T08:07:34.592447Z 0 [Note]  Plugin group_replication reported: 'getstart group_id 8da193f6'
2017-01-11T08:07:37.943536Z 0 [Note]  Plugin group_replication reported: 'state 4330 action xa_terminate'
2017-01-11T08:07:37.943852Z 0 [Note]  Plugin group_replication reported: 'new state x_start'
2017-01-11T08:07:37.943879Z 0 [Note]  Plugin group_replication reported: 'state 4257 action xa_exit'
2017-01-11T08:07:37.943981Z 0 [Note]  Plugin group_replication reported: 'Exiting xcom thread'
2017-01-11T08:07:37.943999Z 0 [Note]  Plugin group_replication reported: 'new state x_start'

【解决办法】:

mysql> CHANGE MASTER TO MASTER_USER='repl', MASTER_PASSWORD='rlpbright_1927@ys' FOR CHANNEL 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (0.01 sec)
 
mysql> stop group_replication;
Query OK, 0 rows affected (0.01 sec)
 
mysql> start group_replication;
Query OK, 0 rows affected (2.20 sec)
 
mysql>
mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| CHANNEL_NAME              | MEMBER_ID      | MEMBER_HOST          | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
| group_replication_applier | 21750571-d7d3-11e6-91e2-18a99b763071 | hch_test_web_1_24    |    3317 | ONLINE       |
| group_replication_applier | 3381d155-d7d1-11e6-94f7-b8ca3af6e36c | hch_test_dbm2_121_71 |        3317 | ONLINE       |
| group_replication_applier | 84dba8ff-d7d2-11e6-aa9a-18a99b76310d | bpe_service     |     3317 | ONLINE       |
+---------------------------+--------------------------------------+----------------------+-------------+--------------+
3 rows in set (0.00 sec)
 
mysql>

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