原【DB宝35】使用MySQL 8.0 克隆(clone)插件快速添加MGR节点

发布日期 2021年6月21日 · 已更新 2021年8月6日

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👉 本文共约1806个字，系统预计阅读时间或需7分钟。

3.1 初始化新节点
3.2 新节点安装clone插件和组复制插件
3.3 新节点执行克隆任务
3.4 在原3节点执行修改参数
3.5 新节点启动MGR

一、MySQL 8.0.17的克隆clone简介

MySQL 8.0.17的克隆插件允许在本地或从远程 MySQL 实例在线克隆数据，从此搭建从库可以不再需要备份工具（PXB或mysqldump）来实现了。克隆数据是存储在 InnoDB 其中的数据的物理快照，其中包括库、表、表空间和数据字典元数据。克隆的数据包含一个功能齐全的数据目录，允许使用克隆插件进行 MySQL 服务器配置。

克隆插件支持两种克隆方式：

本地克隆：本地克隆操作将启动克隆操作的 MySQL 服务器实例中的数据克隆到同服务器或同节点上的一个目录里。

远程克隆：默认情况下，远程克隆操作会删除接受者(recipient)数据目录中的数据，并将其替换为捐赠者(donor)的克隆数据。（可选）您也可以将数据克隆到接受者的其他目录，以避免删除现有数据。

远程克隆操作和本地克隆操作克隆的数据没有区别，数据是相同的。克隆插件支持复制。除克隆数据外，克隆操作还从捐赠者中提取并传输复制位置信息，并将其应用于接受者，从而可以使用克隆插件来配置组复制或主从复制。使用克隆插件进行配置比复制大量事务要快得多，效率更高。

MySQL 8.0 clone插件提供从一个实例克隆数据的功能，克隆功能提供了更有效的方式来快速创建MySQL实例，搭建主从复制和组复制。本文介绍使用 MySQL 8.0 clone 插件快速添加组复制（MGR）节点的方法。

官网地址：https://dev.mysql.com/doc/refman/8.0/en/clone-plugin.html

二、MGR现有环境

已有MGR集群，多主模式：

MySQL [(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 | 611717fe-d785-11ea-9342-0242ac48000f | 172.72.0.15 |        3306 | ONLINE       | PRIMARY     | 8.0.20         |
| group_replication_applier | 67090f47-d785-11ea-b76c-0242ac480010 | 172.72.0.16 |        3306 | ONLINE       | PRIMARY     | 8.0.20         |
| group_replication_applier | 678cf064-d785-11ea-b8ce-0242ac480011 | 172.72.0.17 |        3306 | ONLINE       | PRIMARY     | 8.0.20         |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
3 rows in set (0.00 sec)

MySQL [(none)]> SELECT * FROM performance_schema.replication_group_members;

+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+

+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+

| group_replication_applier | 611717fe-d785-11ea-9342-0242ac48000f | 172.72.0.15 | 3306 | ONLINE | PRIMARY | 8.0.20 |

| group_replication_applier | 67090f47-d785-11ea-b76c-0242ac480010 | 172.72.0.16 | 3306 | ONLINE | PRIMARY | 8.0.20 |

| group_replication_applier | 678cf064-d785-11ea-b8ce-0242ac480011 | 172.72.0.17 | 3306 | ONLINE | PRIMARY | 8.0.20 |

+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+

3 rows in set (0.00 sec)

docker环境：

[root@docker35 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                NAMES
9dd3d6b221b0        mysql:8.0.20        "docker-entrypoint.s…"   3 months ago        Up 10 minutes       33060/tcp, 0.0.0.0:33067->3306/tcp   mysql8020mgr33067
189b5a889665        mysql:8.0.20        "docker-entrypoint.s…"   3 months ago        Up 10 minutes       33060/tcp, 0.0.0.0:33066->3306/tcp   mysql8020mgr33066
6ce08dd5dc84        mysql:8.0.20        "docker-entrypoint.s…"   3 months ago        Up 10 minutes       33060/tcp, 0.0.0.0:33065->3306/tcp   mysql8020mgr33065

[root@docker35 ~]# docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

9dd3d6b221b0 mysql:8.0.20 "docker-entrypoint.s…" 3 months ago Up 10 minutes 33060/tcp, 0.0.0.0:33067->3306/tcp mysql8020mgr33067

189b5a889665 mysql:8.0.20 "docker-entrypoint.s…" 3 months ago Up 10 minutes 33060/tcp, 0.0.0.0:33066->3306/tcp mysql8020mgr33066

6ce08dd5dc84 mysql:8.0.20 "docker-entrypoint.s…" 3 months ago Up 10 minutes 33060/tcp, 0.0.0.0:33065->3306/tcp mysql8020mgr33065

通过clone插件新加节点： 172.72.0.18。

三、使用clone技术添加MGR节点

3.1 初始化新节点

mkdir -p /usr/local/mysql/lhrmgr18/conf.d
mkdir -p /usr/local/mysql/lhrmgr18/data

docker run -d --name mysql8020mgr33068 \
  -h lhrmgr18 -p 33068:3306 --net=mysql-network --ip 172.72.0.18 \
  -v /usr/local/mysql/lhrmgr18/conf.d:/etc/mysql/conf.d -v /usr/local/mysql/lhrmgr18/data:/var/lib/mysql/ \
  -e MYSQL_ROOT_PASSWORD=lhr \
  -e TZ=Asia/Shanghai \
  mysql:8.0.20

cat > /usr/local/mysql/lhrmgr18/conf.d/my.cnf <<"EOF"
[mysqld]
user=mysql
port=3306
character_set_server=utf8mb4
secure_file_priv=''
server-id = 802033068
log-bin = 
binlog_format=row
binlog_checksum=NONE
log-slave-updates=1
skip-name-resolve
auto-increment-increment=2
auto-increment-offset=1
gtid-mode=ON
enforce-gtid-consistency=on
default_authentication_plugin=mysql_native_password
max_allowed_packet = 500M
log_slave_updates=on

master_info_repository=TABLE
relay_log_info_repository=TABLE
relay_log=lhrmgr18-relay-bin-ip18

transaction_write_set_extraction=XXHASH64
loose-group_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
loose-group_replication_start_on_boot=OFF
loose-group_replication_local_address= "172.72.0.18:33064"
loose-group_replication_group_seeds= "172.72.0.15:33061,172.72.0.16:33062,172.72.0.17:33063,172.72.0.18:33064"
loose-group_replication_bootstrap_group=OFF
loose-group_replication_ip_whitelist="172.72.0.15,172.72.0.16,172.72.0.17,172.72.0.18"
report_host=172.72.0.18
report_port=3306

EOF

docker restart mysql8020mgr33068

docker ps
mysql -uroot -plhr -h192.168.1.35 -P33065 -e "select @@hostname,@@server_id,@@server_uuid"
mysql -uroot -plhr -h192.168.1.35 -P33066 -e "select @@hostname,@@server_id,@@server_uuid"
mysql -uroot -plhr -h192.168.1.35 -P33067 -e "select @@hostname,@@server_id,@@server_uuid"
mysql -uroot -plhr -h192.168.1.35 -P33068 -e "select @@hostname,@@server_id,@@server_uuid"
mysql -uroot -plhr -h192.168.1.35 -P33065 
mysql -uroot -plhr -h192.168.1.35 -P33066 
mysql -uroot -plhr -h192.168.1.35 -P33067 
mysql -uroot -plhr -h192.168.1.35 -P33068 
docker logs -f --tail 10 mysql8020mgr33065
docker logs -f --tail 10 mysql8020mgr33066
docker logs -f --tail 10 mysql8020mgr33067
docker logs -f --tail 10 mysql8020mgr33068

mkdir -p /usr/local/mysql/lhrmgr18/conf.d

mkdir -p /usr/local/mysql/lhrmgr18/data

docker run -d --name mysql8020mgr33068 \

-h lhrmgr18 -p 33068:3306 --net=mysql-network --ip 172.72.0.18 \

-v /usr/local/mysql/lhrmgr18/conf.d:/etc/mysql/conf.d -v /usr/local/mysql/lhrmgr18/data:/var/lib/mysql/ \

-e MYSQL_ROOT_PASSWORD=lhr \

-e TZ=Asia/Shanghai \

mysql:8.0.20

cat > /usr/local/mysql/lhrmgr18/conf.d/my.cnf <<"EOF"

[mysqld]

user=mysql

port=3306

character_set_server=utf8mb4

secure_file_priv=''

server-id = 802033068

log-bin =

binlog_format=row

binlog_checksum=NONE

log-slave-updates=1

skip-name-resolve

auto-increment-increment=2

auto-increment-offset=1

gtid-mode=ON

enforce-gtid-consistency=on

default_authentication_plugin=mysql_native_password

max_allowed_packet = 500M

log_slave_updates=on

master_info_repository=TABLE

relay_log_info_repository=TABLE

relay_log=lhrmgr18-relay-bin-ip18

transaction_write_set_extraction=XXHASH64

loose-group_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"

loose-group_replication_start_on_boot=OFF

loose-group_replication_local_address= "172.72.0.18:33064"

loose-group_replication_group_seeds= "172.72.0.15:33061,172.72.0.16:33062,172.72.0.17:33063,172.72.0.18:33064"

loose-group_replication_bootstrap_group=OFF

loose-group_replication_ip_whitelist="172.72.0.15,172.72.0.16,172.72.0.17,172.72.0.18"

report_host=172.72.0.18

report_port=3306

EOF

docker restart mysql8020mgr33068

docker ps

mysql -uroot -plhr -h192.168.1.35 -P33065 -e "select @@hostname,@@server_id,@@server_uuid"

mysql -uroot -plhr -h192.168.1.35 -P33066 -e "select @@hostname,@@server_id,@@server_uuid"

mysql -uroot -plhr -h192.168.1.35 -P33067 -e "select @@hostname,@@server_id,@@server_uuid"

mysql -uroot -plhr -h192.168.1.35 -P33068 -e "select @@hostname,@@server_id,@@server_uuid"

mysql -uroot -plhr -h192.168.1.35 -P33065

mysql -uroot -plhr -h192.168.1.35 -P33066

mysql -uroot -plhr -h192.168.1.35 -P33067

mysql -uroot -plhr -h192.168.1.35 -P33068

docker logs -f --tail 10 mysql8020mgr33065

docker logs -f --tail 10 mysql8020mgr33066

docker logs -f --tail 10 mysql8020mgr33067

docker logs -f --tail 10 mysql8020mgr33068

3.2 新节点安装clone插件和组复制插件

mysql -uroot -plhr -h192.168.1.35 -P33068

-- 安装MGR插件
INSTALL PLUGIN group_replication SONAME 'group_replication.so';

-- 安装clone插件(注意，需要在源MGR3个节点都安装)
INSTALL PLUGIN clone SONAME 'mysql_clone.so';

mysql -uroot -plhr -h192.168.1.35 -P33068

-- 安装MGR插件

INSTALL PLUGIN group_replication SONAME 'group_replication.so';

-- 安装clone插件(注意，需要在源MGR3个节点都安装)

INSTALL PLUGIN clone SONAME 'mysql_clone.so';

3.3 新节点执行克隆任务

-- 设置克隆源，将clone_valid_donor_list设置为MGR节点
SET GLOBAL clone_valid_donor_list = '172.72.0.15:3306';

-- 开始克隆
CLONE INSTANCE FROM 'root'@'172.72.0.15':3306 IDENTIFIED BY 'lhr';

-- 由于是docker环境，所以需要重启容器
-- ERROR 3707 (HY000): Restart server failed (mysqld is not managed by supervisor process).
docker restart mysql8020mgr33068

-- 查看克隆进度和状态
MySQL [(none)]> SELECT * FROM performance_schema.clone_status \G
*************************** 1. row ***************************
             ID: 1
            PID: 0
          STATE: Completed
     BEGIN_TIME: 2020-11-13 15:03:07.076
       END_TIME: 2020-11-13 15:04:31.224
         SOURCE: 172.72.0.15:3306
    DESTINATION: LOCAL INSTANCE
       ERROR_NO: 0
  ERROR_MESSAGE:
    BINLOG_FILE: lhrmgr15-bin.000005
BINLOG_POSITION: 1235
  GTID_EXECUTED: aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-25
1 row in set (0.01 sec)

MySQL [(none)]> select
    ->   stage,
    ->   state,
    ->   cast(begin_time as DATETIME) as "START TIME",
    ->   cast(end_time as DATETIME) as "FINISH TIME",
    ->   lpad(sys.format_time(power(10,12) * (unix_timestamp(end_time) - unix_timestamp(begin_time))), 10, ' ') as DURATION,
    ->   lpad(concat(format(round(estimate/1024/1024,0), 0), "MB"), 16, ' ') as "Estimate",
    ->   case when begin_time is NULL then LPAD('%0', 7, ' ')
    ->   when estimate > 0 then
    ->   lpad(concat(round(data*100/estimate, 0), "%"), 7, ' ')
    ->   when end_time is NULL then lpad('0%', 7, ' ')
    ->   else lpad('100%', 7, ' ')
    ->   end as "Done(%)"
    ->   from performance_schema.clone_progress;
+-----------+-----------+---------------------+---------------------+------------+------------------+---------+
| stage     | state     | START TIME          | FINISH TIME         | DURATION   | Estimate         | Done(%) |
+-----------+-----------+---------------------+---------------------+------------+------------------+---------+
| DROP DATA | Completed | 2020-11-13 15:03:07 | 2020-11-13 15:03:08 |  320.98 ms |              0MB |    100% |
| FILE COPY | Completed | 2020-11-13 15:03:08 | 2020-11-13 15:03:10 |     2.12 s |             64MB |    100% |
| PAGE COPY | Completed | 2020-11-13 15:03:10 | 2020-11-13 15:03:10 |  160.27 ms |              0MB |    100% |
| REDO COPY | Completed | 2020-11-13 15:03:10 | 2020-11-13 15:03:10 |  100.76 ms |              0MB |    100% |
| FILE SYNC | Completed | 2020-11-13 15:03:10 | 2020-11-13 15:03:13 |     2.83 s |              0MB |    100% |
| RESTART   | Completed | 2020-11-13 15:03:13 | 2020-11-13 15:04:30 |     1.29 m |              0MB |    100% |
| RECOVERY  | Completed | 2020-11-13 15:04:30 | 2020-11-13 15:04:31 |     1.19 s |              0MB |    100% |
+-----------+-----------+---------------------+---------------------+------------+------------------+---------+
7 rows in set (0.01 sec)

-- 设置克隆源，将clone_valid_donor_list设置为MGR节点

SET GLOBAL clone_valid_donor_list = '172.72.0.15:3306';

-- 开始克隆

CLONE INSTANCE FROM 'root'@'172.72.0.15':3306 IDENTIFIED BY 'lhr';

-- 由于是docker环境，所以需要重启容器

-- ERROR 3707 (HY000): Restart server failed (mysqld is not managed by supervisor process).

docker restart mysql8020mgr33068

-- 查看克隆进度和状态

MySQL [(none)]> SELECT * FROM performance_schema.clone_status \G

*************************** 1. row ***************************

ID: 1

PID: 0

STATE: Completed

BEGIN_TIME: 2020-11-13 15:03:07.076

END_TIME: 2020-11-13 15:04:31.224

SOURCE: 172.72.0.15:3306

DESTINATION: LOCAL INSTANCE

ERROR_NO: 0

ERROR_MESSAGE:

BINLOG_FILE: lhrmgr15-bin.000005

BINLOG_POSITION: 1235

GTID_EXECUTED: aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-25

1 row in set (0.01 sec)

MySQL [(none)]> select

-> stage,

-> state,

-> cast(begin_time as DATETIME) as "START TIME",

-> cast(end_time as DATETIME) as "FINISH TIME",

-> lpad(sys.format_time(power(10,12) * (unix_timestamp(end_time) - unix_timestamp(begin_time))), 10, ' ') as DURATION,

-> lpad(concat(format(round(estimate/1024/1024,0), 0), "MB"), 16, ' ') as "Estimate",

-> case when begin_time is NULL then LPAD('%0', 7, ' ')

-> when estimate > 0 then

-> lpad(concat(round(data*100/estimate, 0), "%"), 7, ' ')

-> when end_time is NULL then lpad('0%', 7, ' ')

-> else lpad('100%', 7, ' ')

-> end as "Done(%)"

-> from performance_schema.clone_progress;

+-----------+-----------+---------------------+---------------------+------------+------------------+---------+

+-----------+-----------+---------------------+---------------------+------------+------------------+---------+

| DROP DATA | Completed | 2020-11-13 15:03:07 | 2020-11-13 15:03:08 | 320.98 ms | 0MB | 100% |

| FILE COPY | Completed | 2020-11-13 15:03:08 | 2020-11-13 15:03:10 | 2.12 s | 64MB | 100% |

| PAGE COPY | Completed | 2020-11-13 15:03:10 | 2020-11-13 15:03:10 | 160.27 ms | 0MB | 100% |

| REDO COPY | Completed | 2020-11-13 15:03:10 | 2020-11-13 15:03:10 | 100.76 ms | 0MB | 100% |

| FILE SYNC | Completed | 2020-11-13 15:03:10 | 2020-11-13 15:03:13 | 2.83 s | 0MB | 100% |

| RESTART | Completed | 2020-11-13 15:03:13 | 2020-11-13 15:04:30 | 1.29 m | 0MB | 100% |

| RECOVERY | Completed | 2020-11-13 15:04:30 | 2020-11-13 15:04:31 | 1.19 s | 0MB | 100% |

+-----------+-----------+---------------------+---------------------+------------+------------------+---------+

7 rows in set (0.01 sec)

3.4 在原3节点执行修改参数

set global group_replication_group_seeds='172.72.0.15:33061,172.72.0.16:33062,172.72.0.17:33063,172.72.0.18:33064';
stop group_replication;
set global group_replication_ip_whitelist="172.72.0.15,172.72.0.16,172.72.0.17,172.72.0.18";
start group_replication;

set global group_replication_group_seeds='172.72.0.15:33061,172.72.0.16:33062,172.72.0.17:33063,172.72.0.18:33064';

stop group_replication;

set global group_replication_ip_whitelist="172.72.0.15,172.72.0.16,172.72.0.17,172.72.0.18";

start group_replication;

3.5 新节点启动MGR

-- 由于已有MGR集群是多主模式，需要先设置成多主模式
set global group_replication_single_primary_mode=OFF;
set global group_replication_enforce_update_everywhere_checks=ON;

-- 加入组复制
START GROUP_REPLICATION;

-- 查看组复制成员及状态
SELECT * FROM performance_schema.replication_group_members;
 +---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME              | MEMBER_ID                            | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 276804ba-257c-11eb-b8ea-0242ac480012 | 172.72.0.18 |        3306 | ONLINE       | PRIMARY     | 8.0.20         |
| group_replication_applier | 611717fe-d785-11ea-9342-0242ac48000f | 172.72.0.15 |        3306 | ONLINE       | PRIMARY     | 8.0.20         |
| group_replication_applier | 67090f47-d785-11ea-b76c-0242ac480010 | 172.72.0.16 |        3306 | ONLINE       | PRIMARY     | 8.0.20         |
| group_replication_applier | 678cf064-d785-11ea-b8ce-0242ac480011 | 172.72.0.17 |        3306 | ONLINE       | PRIMARY     | 8.0.20         |
+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+
4 rows in set (0.00 sec)

-- 新节点查询数据库
MySQL [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| lhrdb              |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.01 sec

-- 由于已有MGR集群是多主模式，需要先设置成多主模式

set global group_replication_single_primary_mode=OFF;

set global group_replication_enforce_update_everywhere_checks=ON;

-- 加入组复制

START GROUP_REPLICATION;

-- 查看组复制成员及状态

SELECT * FROM performance_schema.replication_group_members;

+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+

+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+

| group_replication_applier | 276804ba-257c-11eb-b8ea-0242ac480012 | 172.72.0.18 | 3306 | ONLINE | PRIMARY | 8.0.20 |

| group_replication_applier | 611717fe-d785-11ea-9342-0242ac48000f | 172.72.0.15 | 3306 | ONLINE | PRIMARY | 8.0.20 |

| group_replication_applier | 67090f47-d785-11ea-b76c-0242ac480010 | 172.72.0.16 | 3306 | ONLINE | PRIMARY | 8.0.20 |

| group_replication_applier | 678cf064-d785-11ea-b8ce-0242ac480011 | 172.72.0.17 | 3306 | ONLINE | PRIMARY | 8.0.20 |

+---------------------------+--------------------------------------+-------------+-------------+--------------+-------------+----------------+

4 rows in set (0.00 sec)

-- 新节点查询数据库

MySQL [(none)]> show databases;

+--------------------+

| Database |

+--------------------+

| information_schema |

| lhrdb |

| mysql |

| performance_schema |

| sys |

+--------------------+

5 rows in set (0.01 sec

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原【DB宝35】使用MySQL 8.0 克隆(clone)插件快速添加MGR节点

一、MySQL 8.0.17的克隆clone简介

二、MGR现有环境

三、使用clone技术添加MGR节点

3.1 初始化新节点

3.2 新节点安装clone插件和组复制插件

3.3 新节点执行克隆任务

3.4 在原3节点执行修改参数

3.5 新节点启动MGR

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				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30

原 【DB宝35】使用MySQL 8.0 克隆(clone)插件快速添加MGR节点

一、MySQL 8.0.17的克隆clone简介

二、MGR现有环境

三、使用clone技术添加MGR节点

3.1 初始化新节点

3.2 新节点安装clone插件和组复制插件

3.3 新节点执行克隆任务

3.4 在原3节点执行修改参数

3.5 新节点启动MGR

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原【DB宝35】使用MySQL 8.0 克隆(clone)插件快速添加MGR节点

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