Source: Public Account Shuai Meng’s Miscellaneous Talk Shop
Environmental information
IP | port | role | info |
---|---|---|---|
192.168.188.81 | 3316 | node1 | master |
192.168.188.82 | 3316 | node2 | slave1 |
192.168.188.83 | 3316 | node3 | slave2 |
CentOS Linux release 7.6.1810 (Core)
MySQL Ver 8.0.19 for linux-glibc2.12 on x86_64 (MySQL Community Server - GPL)
MySQL Router Ver 8.0.20 for Linux on x86_64 (MySQL Community - GPL)
MySQL Shell Ver 8.0.20 for Linux on x86_64 - for MySQL 8.0.20 (MySQL Community Server (GPL))
Software location
Deploy MySQL, MySQL Router, and MySQL Shell on the three nodes.
Set up a replication environment and enable enhanced semi-synchronization
All node configuration
root@localhost [(none)]>set global super_read_only=0;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>create user 'rep'@'192.168.188.%' identified by 'rep';
Query OK, 0 rows affected (0.02 sec)
root@localhost [(none)]>grant replication slave on *.* to 'rep'@'192.168.188.%';
Query OK, 0 rows affected (0.02 sec)
root@localhost [(none)]>install plugin rpl_semi_sync_slave soname 'semisync_slave.so';
Query OK, 0 rows affected (0.01 sec)
root@localhost [(none)]>install plugin rpl_semi_sync_master soname 'semisync_master.so';
Query OK, 0 rows affected (0.02 sec)
master node configuration
root@localhost [(none)]>set global rpl_semi_sync_master_enabled=ON;
Query OK, 0 rows affected (0.01 sec)
root@localhost [(none)]>show global variables like '%semi%';
+-------------------------------------------+------------+
| Variable_name | Value |
+-------------------------------------------+------------+
| rpl_semi_sync_master_enabled | ON |
| rpl_semi_sync_master_timeout | 10000 |
| rpl_semi_sync_master_trace_level | 32 |
| rpl_semi_sync_master_wait_for_slave_count | 1 |
| rpl_semi_sync_master_wait_no_slave | ON |
| rpl_semi_sync_master_wait_point | AFTER_SYNC |
| rpl_semi_sync_slave_enabled | OFF |
| rpl_semi_sync_slave_trace_level | 32 |
+-------------------------------------------+------------+
8 rows in set (0.00 sec)
root@localhost [(none)]>reset master;
Query OK, 0 rows affected (0.04 sec)
Slave node configuration
root@localhost [(none)]>set global rpl_semi_sync_slave_enabled=ON;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>change master to master_host='192.168.188.81',master_port=3316,master_user='rep',master_password='rep',master_auto_position=1,get_master_public_key=1;
Query OK, 0 rows affected, 2 warnings (0.04 sec)
root@localhost [(none)]>reset master;
Query OK, 0 rows affected (0.04 sec)
slave starts replication
root@localhost [(none)]>start slave;
Query OK, 0 rows affected (0.03 sec)
root@localhost [(none)]>show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.188.81
Master_User: rep
Master_Port: 3316
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 155
Relay_Log_File: ms82-relay-bin.000002
Relay_Log_Pos: 369
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
...
...
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
...
...
1 row in set (0.00 sec)
master view semi-synchronized status
root@localhost [(none)]>show global status like '%semi%';
+--------------------------------------------+-------+
| Variable_name | Value |
+--------------------------------------------+-------+
| Rpl_semi_sync_master_clients | 2 |
| Rpl_semi_sync_master_net_avg_wait_time | 0 |
| Rpl_semi_sync_master_net_wait_time | 0 |
| Rpl_semi_sync_master_net_waits | 0 |
| Rpl_semi_sync_master_no_times | 0 |
| Rpl_semi_sync_master_no_tx | 0 |
| Rpl_semi_sync_master_status | ON |
| Rpl_semi_sync_master_timefunc_failures | 0 |
| Rpl_semi_sync_master_tx_avg_wait_time | 0 |
| Rpl_semi_sync_master_tx_wait_time | 0 |
| Rpl_semi_sync_master_tx_waits | 0 |
| Rpl_semi_sync_master_wait_pos_backtraverse | 0 |
| Rpl_semi_sync_master_wait_sessions | 0 |
| Rpl_semi_sync_master_yes_tx | 0 |
| Rpl_semi_sync_slave_status | OFF |
+--------------------------------------------+-------+
15 rows in set (0.00 sec)
Simulate business, use scripts to generate transactions
Build a table
root@localhost [(none)]>create database kk;
Query OK, 1 row affected (0.03 sec)
root@localhost [(none)]>use kk
Database changed
root@localhost [kk]>create table k1 ( id int auto_increment primary key , dtl varchar(20) default 'abc');
Query OK, 0 rows affected (0.05 sec)
Open a session, run the script to generate transactions
[root@ms81 ~]# while :; do echo "insert into kk.k1(dtl) values('duangduangduang');" | mysql -S /data/mysql/mysql3316/tmp/mysql.sock; sleep 1;done
Configure MGR manually
Configure Master, convert Master to MGR
Configuration parameter
root@localhost [kk]>install plugin group_replication soname 'group_replication.so';
Query OK, 0 rows affected (0.03 sec)
root@localhost [kk]>set persist binlog_checksum=NONE;
Query OK, 0 rows affected (0.02 sec)
root@localhost [kk]>set persist transaction_write_set_extraction=XXHASH64;
Query OK, 0 rows affected (0.00 sec)
root@localhost [kk]>select uuid();
+--------------------------------------+
| uuid() |
+--------------------------------------+
| 3260d70c-966e-11ea-ba8b-0242c0a8bc51 |
+--------------------------------------+
1 row in set (0.00 sec)
root@localhost [kk]>set persist group_replication_group_name='3260d70c-966e-11ea-ba8b-0242c0a8bc51';
Query OK, 0 rows affected (0.00 sec)
root@localhost [kk]>set persist group_replication_local_address="192.168.188.81:13306";
Query OK, 0 rows affected (0.00 sec)
root@localhost [kk]>set persist group_replication_group_seeds="192.168.188.81:13306,192.168.188.82:13306,192.168.188.83:13306";
Query OK, 0 rows affected (0.00 sec)
#也要加上这个,具体见文末
SET persist group_replication_recovery_get_public_key = 1;
root@localhost [kk]>set persist group_replication_bootstrap_group=off;
Query OK, 0 rows affected (0.00 sec)
root@localhost [kk]>set persist group_replication_start_on_boot=off;
Query OK, 0 rows affected (0.00 sec)
root@localhost [kk]>set global group_replication_bootstrap_group=on;
Query OK, 0 rows affected (0.00 sec)
root@localhost [kk]>start group_replication;
Query OK, 0 rows affected (3.36 sec)
root@localhost [kk]>set global group_replication_bootstrap_group=off;
Query OK, 0 rows affected (0.00 sec)
root@localhost [kk]>select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 29ea8b7f-966d-11ea-937c-0242c0a8bc51 | ms81 | 3316 | ONLINE | PRIMARY | 8.0.19 |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
1 row in set (0.01 sec)
At this time, a reminder appeared in the session where the transaction occurred
[root@ms81 ~]# while :; do echo "insert into kk.k1(dtl) values('duangduangduang');" | mysql -S /data/mysql/mysql3316/tmp/mysql.sock; sleep 1;done
ERROR 1290 (HY000) at line 1: The MySQL server is running with the --super-read-only option so it cannot execute this statement
ERROR 1290 (HY000) at line 1: The MySQL server is running with the --super-read-only option so it cannot execute this statement
ERROR 1290 (HY000) at line 1: The MySQL server is running with the --super-read-only option so it cannot execute this statement
Go to configure slave1 and convert to MGR
root@localhost [(none)]>install plugin group_replication soname 'group_replication.so';
Query OK, 0 rows affected (0.01 sec)
root@localhost [(none)]>set persist binlog_checksum=NONE;
Query OK, 0 rows affected (0.03 sec)
root@localhost [(none)]>set persist transaction_write_set_extraction=XXHASH64;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>set persist group_replication_group_name='3260d70c-966e-11ea-ba8b-0242c0a8bc51';
Query OK, 0 rows affected (0.01 sec)
root@localhost [(none)]>set persist group_replication_local_address="192.168.188.82:13306";
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>set persist group_replication_group_seeds="192.168.188.81:13306,192.168.188.82:13306,192.168.188.83:13306";
Query OK, 0 rows affected (0.00 sec)
#也要加上这个,具体见文末
SET persist group_replication_recovery_get_public_key = 1;
root@localhost [(none)]>set persist group_replication_bootstrap_group=off;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>set persist group_replication_start_on_boot=off;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>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.
root@localhost [(none)]>select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 2cbcfaa5-966d-11ea-8707-0242c0a8bc52 | ms82 | 3316 | OFFLINE |
| |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
1 row in set (0.01 sec)
root@localhost [(none)]>stop group_replication;
Query OK, 0 rows affected (4.78 sec)
root@localhost [(none)]>change master to master_user='rep',master_password='rep' for channel 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (0.03 sec)
root@localhost [(none)]>start group_replication;
Query OK, 0 rows affected (3.88 sec)
root@localhost [(none)]>select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 29ea8b7f-966d-11ea-937c-0242c0a8bc51 | ms81 | 3316 | ONLINE | PRIMARY | 8.0.19 |
| group_replication_applier | 2cbcfaa5-966d-11ea-8707-0242c0a8bc52 | ms82 | 3316 | ONLINE | SECONDARY | 8.0.19 |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
2 rows in set (0.00 sec)
Do the same, transform slave2
Before the transformation, I suddenly thought that the existing architecture has become: node1(master)\node2(slave1) is MGR, node3(slave2) is the slave library of node1(master), then check the current three nodes:
node1:
root@localhost [kk]>select count(*) from kk.k1;
+----------+
| count(*) |
+----------+
| 456 |
+----------+
1 row in set (0.00 sec)
root@localhost [kk]>show master status ;
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
| mysql-bin.000002 | 154142 | | | 3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-350,
f78a6902-9679-11ea-b136-0242c0a8bc51:1-111 |
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
node2:
root@localhost [(none)]>select count(*) from kk.k1;
+----------+
| count(*) |
+----------+
| 456 |
+----------+
1 row in set (0.00 sec)
root@localhost [(none)]>show master status ;
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
| mysql-bin.000002 | 109956 | | | 3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-350,
f78a6902-9679-11ea-b136-0242c0a8bc51:1-111 |
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
##注意,node2的 IO、SQL THREAD没有运行,但是 Executed_Gtid_Set 是跟进的噢
root@localhost [(none)]>show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.188.81
Master_User: rep
Master_Port: 3316
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 74606
Relay_Log_File: ms82-relay-bin.000004
Relay_Log_Pos: 74820
Relay_Master_Log_File: mysql-bin.000002
Slave_IO_Running: No
Slave_SQL_Running: No
...
...
Master_Server_Id: 813316
Master_UUID: f78a6902-9679-11ea-b136-0242c0a8bc51
Master_Info_File: mysql.slave_master_info
...
Retrieved_Gtid_Set: 3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-121,
f78a6902-9679-11ea-b136-0242c0a8bc51:1-111
Executed_Gtid_Set: 3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-350,
f78a6902-9679-11ea-b136-0242c0a8bc51:1-111
Auto_Position: 1
...
1 row in set (0.00 sec)
node3:
root@localhost [(none)]>select count(*) from kk.k1;
+----------+
| count(*) |
+----------+
| 456 |
+----------+
1 row in set (0.00 sec)
root@localhost [(none)]>show master status ;
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
| mysql-bin.000001 | 169340 | | | 3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-350,
f78a6902-9679-11ea-b136-0242c0a8bc51:1-111 |
+------------------+----------+--------------+------------------+----------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
root@localhost [(none)]>show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.188.81
Master_User: rep
Master_Port: 3316
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 154142
Relay_Log_File: ms83-relay-bin.000004
Relay_Log_Pos: 154356
Relay_Master_Log_File: mysql-bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
...
...
Master_UUID: f78a6902-9679-11ea-b136-0242c0a8bc51
Master_Info_File: mysql.slave_master_info
...
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
...
Retrieved_Gtid_Set: 3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-350,
f78a6902-9679-11ea-b136-0242c0a8bc51:1-111
Executed_Gtid_Set: 3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-350,
f78a6902-9679-11ea-b136-0242c0a8bc51:1-111
Auto_Position: 1
...
1 row in set (0.00 sec)
Convert slave2
root@localhost [(none)]>install plugin group_replication soname 'group_replication.so';
Query OK, 0 rows affected (0.02 sec)
root@localhost [(none)]>set persist binlog_checksum=NONE;
Query OK, 0 rows affected (0.03 sec)
root@localhost [(none)]>set persist transaction_write_set_extraction=XXHASH64;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>set persist group_replication_group_name='3260d70c-966e-11ea-ba8b-0242c0a8bc51';
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>set persist group_replication_local_address="192.168.188.83:13306";
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>set persist group_replication_group_seeds="192.168.188.81:13306,192.168.188.82:13306,192.168.188.83:13306";
group_rQuery OK, 0 rows affected (0.00 sec)
#也要加上这个,具体见文末
SET persist group_replication_recovery_get_public_key = 1;
root@localhost [(none)]>set persist group_replication_bootstrap_group=off;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>set persist group_replication_start_on_boot=off;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>stop slave;
Query OK, 0 rows affected (0.01 sec)
root@localhost [(none)]>change master to master_user='rep',master_password='rep' for channel 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (0.05 sec)
plicatioroot@localhost [(none)]>start group_replication;
Query OK, 0 rows affected (4.64 sec)
root@localhost [(none)]>select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 29ea8b7f-966d-11ea-937c-0242c0a8bc51 | ms81 | 3316 | ONLINE | PRIMARY | 8.0.19 |
| group_replication_applier | 2cbcfaa5-966d-11ea-8707-0242c0a8bc52 | ms82 | 3316 | ONLINE | SECONDARY | 8.0.19 |
| group_replication_applier | 2db7ddf1-966d-11ea-a7b3-0242c0a8bc53 | ms83 | 3316 | ONLINE | SECONDARY | 8.0.19 |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
3 rows in set (0.00 sec)
root@localhost [(none)]>
Some tips
Parameter file!
The biggest difference between manual conversion to MGR and conversion through MySQL Shell is that the latter will automatically write changes to the mysqld-auto.cnf file through set persist, and manual operations need to pay attention to this. The above experiment did not edit my.cnf at all. If set global is used, when the three MGR nodes are cold-started again, the configuration parameters of MGR are gone and MGR cannot be started. The solution is:
Use set persist instead of set global in the configuration process to save the configuration persistently
If you have already restarted all nodes and cleared the temporary configuration, you can use set persist to set it again. After the setting is set, it can take effect directly and start GR.
sha2_password spell
After I set the global configuration, I restarted the node, and after the set persist persistence configuration, after starting MGR, the master went online smoothly, but when node2 joined GR, it was always RECOVERING
After checking errlog:
2020-05-15T14:35:46.869802+08:00 21 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='ms81', master_port= 3316, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='ms81', master_port= 3316, master_log_file='', master_log_pos= 4, master_bind=''.
2020-05-15T14:35:46.906422+08:00 28 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information.
2020-05-15T14:35:46.907876+08:00 28 [ERROR] [MY-010584] [Repl] Slave I/O for channel 'group_replication_recovery': error connecting to master 'rep@ms81:3316' - retry-time: 60 retries: 1 message: Authentication plugin 'caching_sha2_password' reported error: Authentication requires secure connection. Error_code: MY-002061
2020-05-15T14:35:46.923832+08:00 21 [ERROR] [MY-011582] [Repl] Plugin group_replication reported: 'There was an error when connecting to the donor server. Please check that group_replication_recovery channel credentials and all MEMBER_HOST column values of performance_schema.replication_group_members table are correct and DNS resolvable.'
2020-05-15T14:35:46.923887+08:00 21 [ERROR] [MY-011583] [Repl] Plugin group_replication reported: 'For details please check performance_schema.replication_connection_status table and error log messages of Slave I/O for channel group_replication_recovery.'
检查 performance_schema.replication_connection_status
root@localhost [(none)]>select * from performance_schema.replication_connection_status\G
...
...
...
*************************** 3. row ***************************
CHANNEL_NAME: group_replication_recovery
GROUP_NAME:
SOURCE_UUID:
THREAD_ID: NULL
SERVICE_STATE: OFF
COUNT_RECEIVED_HEARTBEATS: 0
LAST_HEARTBEAT_TIMESTAMP: 0000-00-00 00:00:00.000000
RECEIVED_TRANSACTION_SET:
LAST_ERROR_NUMBER: 2061
LAST_ERROR_MESSAGE: error connecting to master 'rep@ms81:3316' - retry-time: 60 retries: 1 message: Authentication plugin 'caching_sha2_password' reported error: Authentication requires secure connection.
...
...
3 rows in set (0.01 sec)
Regress to the recovering state and encounter connection problems, try to increase the change master:
root@localhost [(none)]>change master to master_user='rep',master_password='rep',get_master_public_key=1 for channel 'group_replication_recovery';
ERROR 3139 (HY000): CHANGE MASTER with the given parameters cannot be performed on channel 'group_replication_recovery'.
This is embarrassing.
Temporary solution
[root@ms82 ~]# mysql -h 192.168.188.81 -P 3316 -urep -prep
[email protected] [(none)]>exit
[root@ms82 ~]# mysql -S /data/mysql/mysql3316/tmp/mysql.sock
root@localhost [(none)]>stop group_replication;
Query OK, 0 rows affected (4.75 sec)
root@localhost [(none)]>start group_replication;
Query OK, 0 rows affected (5.75 sec)
root@localhost [(none)]>select * from performance_schema.replication_connection_status\G
*************************** 1. row ***************************
CHANNEL_NAME:
GROUP_NAME:
SOURCE_UUID: 29ea8b7f-966d-11ea-937c-0242c0a8bc51
THREAD_ID: NULL
SERVICE_STATE: OFF
COUNT_RECEIVED_HEARTBEATS: 0
LAST_HEARTBEAT_TIMESTAMP: 0000-00-00 00:00:00.000000
RECEIVED_TRANSACTION_SET: 29ea8b7f-966d-11ea-937c-0242c0a8bc51:1-530,
3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-343
LAST_ERROR_NUMBER: 0
LAST_ERROR_MESSAGE:
LAST_ERROR_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION:
LAST_QUEUED_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION_START_QUEUE_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION_END_QUEUE_TIMESTAMP: 0000-00-00 00:00:00.000000
QUEUEING_TRANSACTION:
QUEUEING_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
QUEUEING_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
QUEUEING_TRANSACTION_START_QUEUE_TIMESTAMP: 0000-00-00 00:00:00.000000
*************************** 2. row ***************************
CHANNEL_NAME: group_replication_applier
GROUP_NAME: 3260d70c-966e-11ea-ba8b-0242c0a8bc51
SOURCE_UUID: 3260d70c-966e-11ea-ba8b-0242c0a8bc51
THREAD_ID: NULL
SERVICE_STATE: ON
COUNT_RECEIVED_HEARTBEATS: 0
LAST_HEARTBEAT_TIMESTAMP: 0000-00-00 00:00:00.000000
RECEIVED_TRANSACTION_SET: 29ea8b7f-966d-11ea-937c-0242c0a8bc51:1-530,
3260d70c-966e-11ea-ba8b-0242c0a8bc51:1-781:787
LAST_ERROR_NUMBER: 0
LAST_ERROR_MESSAGE:
LAST_ERROR_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION: 3260d70c-966e-11ea-ba8b-0242c0a8bc51:787
LAST_QUEUED_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION_START_QUEUE_TIMESTAMP: 2020-05-15 14:38:54.721851
LAST_QUEUED_TRANSACTION_END_QUEUE_TIMESTAMP: 2020-05-15 14:38:54.721874
QUEUEING_TRANSACTION:
QUEUEING_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
QUEUEING_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
QUEUEING_TRANSACTION_START_QUEUE_TIMESTAMP: 0000-00-00 00:00:00.000000
*************************** 3. row ***************************
CHANNEL_NAME: group_replication_recovery
GROUP_NAME:
SOURCE_UUID:
THREAD_ID: NULL
SERVICE_STATE: OFF
COUNT_RECEIVED_HEARTBEATS: 0
LAST_HEARTBEAT_TIMESTAMP: 0000-00-00 00:00:00.000000
RECEIVED_TRANSACTION_SET:
LAST_ERROR_NUMBER: 0
LAST_ERROR_MESSAGE:
LAST_ERROR_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION:
LAST_QUEUED_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION_START_QUEUE_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_QUEUED_TRANSACTION_END_QUEUE_TIMESTAMP: 0000-00-00 00:00:00.000000
QUEUEING_TRANSACTION:
QUEUEING_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
QUEUEING_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
QUEUEING_TRANSACTION_START_QUEUE_TIMESTAMP: 0000-00-00 00:00:00.000000
3 rows in set (0.00 sec)
Regular army solution
SET GLOBAL group_replication_recovery_use_ssl = ON;
SET GLOBAL group_replication_recovery_get_public_key = 1; #已合并到操作中
SET GLOBAL group_replication_recovery_public_key_path = 'path to RSA public key file';
MGR cold start
Turn off all three nodes
mysql > shutdown ;
Start node1
[root@ms81 ~]# mysqld --defaults-file=/data/mysql/mysql3316/my3316.cnf &
[root@ms81 ~]# mysql -S /data/mysql/mysql3316/tmp/mysql.sock
root@localhost [(none)]>set global group_replication_bootstrap_group=ON;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>start group_replication;
Query OK, 0 rows affected (3.16 sec)
root@localhost [(none)]>set global group_replication_bootstrap_group=OFF;
Query OK, 0 rows affected (0.00 sec)
root@localhost [(none)]>select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | f78a6902-9679-11ea-b136-0242c0a8bc51 | ms81 | 3316 | ONLINE | PRIMARY | 8.0.19 |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
1 rows in set (0.01 sec)
Start node2
[root@ms82 ~]# mysqld --defaults-file=/data/mysql/mysql3316/my3316.cnf &
[root@ms82 ~]# mysql -S /data/mysql/mysql3316/tmp/mysql.sock
root@localhost [(none)]>start group_replication;
Query OK, 0 rows affected (3.45 sec)
root@localhost [(none)]>select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | f78a6902-9679-11ea-b136-0242c0a8bc51 | ms81 | 3316 | ONLINE | PRIMARY | 8.0.19 |
| group_replication_applier | faaab4c3-9679-11ea-896f-0242c0a8bc52 | ms82 | 3316 | ONLINE | SECONDARY | 8.0.19 |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
2 rows in set (0.00 sec)
-Similarly, start node3
[root@ms83 ~]# mysqld --defaults-file=/data/mysql/mysql3316/my3316.cnf &
[root@ms83 ~]# mysql -S /data/mysql/mysql3316/tmp/mysql.sock
root@localhost [(none)]>start group_replication;
Query OK, 0 rows affected (3.45 sec)
root@localhost [(none)]>select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | f78a6902-9679-11ea-b136-0242c0a8bc51 | ms81 | 3316 | ONLINE | PRIMARY | 8.0.19 |
| group_replication_applier | faaab4c3-9679-11ea-896f-0242c0a8bc52 | ms82 | 3316 | ONLINE | SECONDARY | 8.0.19 |
| group_replication_applier | fb358b40-9679-11ea-94cb-0242c0a8bc53 | ms83 | 3316 | ONLINE | SECONDARY | 8.0.19 |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
3 rows in set (0.01 sec)
The full text is over.
Enjoy MySQL 8.0 :)
Teacher Ye's "MySQL Core Optimization" class has been upgraded to MySQL 8.0, scan the code to start the journey of MySQL 8.0 practice