这次来安装mysql8了,以前安装不是docker安装,这个我也是第一次,人人都有第一次嚒
前言
前面的redis安装还是花了点时间的,主要是网上教程,各有各的好,大家千万别取其长处,个人觉得这个环境影响很大?反正我照着装很多也不能安装完成。
这次安装mysql希望快点,不过也没关系,陪娃做作业,我就安装这玩意
我们直接安装集群。看时间允许,我们也安装个单机版的
一、MGR简介
确保数据库稳定运行是DBA核心价值之一。通过搭建灾备库,利用复制技术同步主库的数据更新,在主库不可用时,启用备库可以快速恢复数据库服务,减少对业务的影响,同时,备库也可用于负载均衡、数据备份、统计报表等场景。带来诸多好处的同时,自然也有其弊端:增加了额外的硬件、维护成本,以及复制中主从数据延迟或不一致等多种问题。MySQL在3.23.15版本中新增了复制功能,接下来是一系列的增强和优化:row based,半同步复制,GTID,多线程,多源复制,组复制等,本文使用2016年底官方GA的Group Replicaion(下文简称MGR)
架构图:
- MGR(MySQL Group Replication)是MySQL 5.7.17提出的集群方案,它既可以很好地保证数据一致性,又具备故障检测和转移功能,MGR还支持多节点写入,这是一项被普遍看好的技术。
- MGR(MySQL Group Replication)是MySQL自带的一个插件,可以灵活部署。MySQL MGR集群是多个MySQL Server节点共同组成的分布式集群,每个Server都有完整的副本,它是基于行(ROW)格式的二进制日志文件。
- MGR是一个多主结构,通过组复制(Group Replication)机制实现各节点数据的一致性,这与Replication的异步复制、PXC的同步复制都不相同。
- 如图所示,DB1、DB2、DB3构成的MGR集群,集群中每个DB都有MGR层,MGR层功能也可简单理解为由Paxos模块和冲突检测Certify模块实现
- Paxos模块基于Paxos算法,确保所有节点收到相同广播消息,Transactionmessage(交易信息)就是广播消息的内容结构;冲突检测Certify(保证)模块进行冲突检测确保数据的最终一致性。
- 当DB1上有事务T1要执行时,T1对DB1来说是本地事务,对于DB2、DB3来说是远端事务;DB1在事务T1被执行后,会把执行事务T1的信息广播给集群中各个节点,包括DB1本身;通过Paxos模块广播给MGR集群中的各个节点,半数以上的节点同意并且达成共识,之后共识信息进入各个节点的冲突检测Certify模块,各个节点各自进行冲突检测验证,最终保证事务在集群中的最终一致性。
- 在冲突检测通过之后,本地事务T1在DB1直接提交即可,否则直接回滚。远端事务T1在DB2和DB3分别先更新到relaylog,然后应用到binlog,完成数据的同步,否则直接放弃该事务。
- 优点:避免脑裂:MGR中不会出现脑裂的现象;数据一致性保障:MGR的冗余能力很好,能够保证Binlog Event至少被复制到超过一半的成员上,只要同时宕机的成员不超过半数便不会导致数据丢失
二、集群安装
1、环境
victor_t400@victort400:/home$ uname -a
Linux victort400 6.8.0-31-generic #31-Ubuntu SMP PREEMPT_DYNAMIC Sat Apr 20 00:40:06 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
victor_t400@victort400:/home$ docker --version
Docker version 24.0.7, build 24.0.7-0ubuntu4
2、拉取镜像
victor_t400@victort400:/home$ docker pull mysql:8.0.20
8.0.20: Pulling from library/mysql
Digest: sha256:8b7b328a7ff6de46ef96bcf83af048cb00a1c86282bfca0cb119c84568b4caf6
Status: Downloaded newer image for mysql:8.0.20
docker.io/library/mysql:8.0.20
victor_t400@victort400:/home$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
mysql latest 8251f0669c6e 3 days ago 623MB
redis latest 9509c4dd19fb 4 weeks ago 116MB
mysql 8.0.20 be0dbf01a0f3 3 years ago 541MB
3、创建容器网络
victor_t400@victort400:/home$ docker network create --subnet=172.72.0.0/24 mysql-net
96ab815083147c7bdba564c92585ee6d0b64e923beea43844f1c8c9eb08a0b71
victor_t400@victort400:/home$docker network ls
NETWORK ID NAME DRIVER SCOPE
90725f91b3dc bridge bridge local
d009f7a9343b host host local
96ab81508314 mysql-net bridge localf9c89145d9ab none null local
a09e80dd0716 redis-net bridge local
4、创建mysql的数据目录
bashsudo mkdir -p /home/mysql-mgr/mysql-mgr-master/conf.d sudo mkdir -p /home/mysql-mgr/mysql-mgr-master/data sudo mkdir -p /home/mysql-mgr/mysql-mgr-slave01/conf.d sudo mkdir -p /home/mysql-mgr/mysql-mgr-slave01/data sudo mkdir -p /home/mysql-mgr/mysql-mgr-slave02/conf.d sudo mkdir -p /home/mysql-mgr/mysql-mgr-slave02/data
5、拉起容器
密码设置不要用123456,这个就可以 LzloveYou123!
bash
docker run -d --name mysql-mgr-master -h mysql-mgr-master \
-p 13066:3306 -p 33011:33011 \
--net=mysql-net --ip 172.72.0.101 \
-v /home/mysql-mgr/mysql-mgr-master/conf.d:/etc/mysql/conf.d \
-v /home/mysql-mgr/mysql-mgr-master/data:/var/lib/mysql/ \
-e MYSQL_ROOT_PASSWORD=123456 \
-e TZ=Asia/Shanghai \
--privileged=true mysql:8.0.20
bash
docker run -d --name mysql-mgr-slave01 -h mysql-mgr-slave01 \
-p 23066:3306 -p 33012:33012 \
--net=mysql-net --ip 172.72.0.102 \
-v /home/mysql-mgr/mysql-mgr-slave01/conf.d:/etc/mysql/conf.d \
-v /home/mysql-mgr/mysql-mgr-slave01/data:/var/lib/mysql/ \
-e MYSQL_ROOT_PASSWORD=123456 \
-e TZ=Asia/Shanghai \
--privileged=true mysql:8.0.20
bash
docker run -d --name mysql-mgr-slave02 -h mysql-mgr-slave02 \
-p 33066:3306 -p 33013:33013 \
--net=mysql-net --ip 172.72.0.103 \
-v /home/mysql-mgr/mysql-mgr-slave02/conf.d:/etc/mysql/conf.d \
-v /home/mysql-mgr/mysql-mgr-slave02/data:/var/lib/mysql/ \
-e MYSQL_ROOT_PASSWORD=123456 \
-e TZ=Asia/Shanghai \
--privileged=true mysql:8.0.20
victor_t400@victort400:/home/mysql-mgr$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
26b69bc2a374 mysql "docker-entrypoint.s..." 4 seconds ago Up 2 seconds 0.0.0.0:33011->33011/tcp, :::33011->33011/tcp, 33060/tcp, 0.0.0.0:13066->3306/tcp, :::13066->3306/tcp mysql-mgr-master
ee9ac39c7cf9 mysql "docker-entrypoint.s..." 2 minutes ago Up 2 minutes 0.0.0.0:33012->33012/tcp, :::33012->33012/tcp, 33060/tcp, 0.0.0.0:23066->3306/tcp, :::23066->3306/tcp mysql-mgr-slave01
20f7e28c414e mysql "docker-entrypoint.s..." 2 minutes ago Up 2 minutes 0.0.0.0:33013->33013/tcp, :::33013->33013/tcp, 33060/tcp, 0.0.0.0:33066->3306/tcp, :::33066->3306/tcp mysql-mgr-slave02
这样就建了3个docker容器节点,运行了起来
6、修改配置mysql参数配置文件
a、删除旧的配置文件
bash
sudo rm -rf /home/mysql-mgr/mysql-mgr-master/conf.d/my.cnf
sudo rm -rf /home/mysql-mgr/mysql-mgr-slave01/conf.d/my.cnf
sudo rm -rf /home/mysql-mgr/mysql-mgr-slave02/conf.d/my.cnf
b、mysql-mgr集群master配置文件
bash
sudo touch /home/mysql-mgr/mysql-mgr-master/conf.d/my.cnf
sudo chmod 777 /home/mysql-mgr/mysql-mgr-master/conf.d/my.cnf
sudo cat > /home/mysql-mgr/mysql-mgr-master/conf.d/my.cnf <<"EOF"
[mysqld]
user=mysql
port=3306
character_set_server=utf8mb4
secure_file_priv=''
server-id = 2024050401
default-time-zone = '+8:00'
log_timestamps = SYSTEM
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
master_info_repository=TABLE
relay_log_info_repository=TABLE
relay_log=mysql-mgr-master-relay-bin-ip101
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= "172.72.0.101:33011"
loose-group_replication_group_seeds= "172.72.0.101:33011,172.72.0.102:33012,172.72.0.103:33013"
loose-group_replication_bootstrap_group=OFF
loose-group_replication_ip_whitelist="172.72.0.101,172.72.0.102,172.72.0.103"
report_host=172.72.0.101
report_port=3306
EOF
c、 mysql-mgr集群slave01配置文件
bash
sudo touch /home/mysql-mgr/mysql-mgr-slave01/conf.d/my.cnf
sudo chmod 777 /home/mysql-mgr/mysql-mgr-slave01/conf.d/my.cnf
sudo cat > /home/mysql-mgr/mysql-mgr-slave01/conf.d/my.cnf <<"EOF"
[mysqld]
user=mysql
port=3306
character_set_server=utf8mb4
secure_file_priv=''
server-id = 2024050402
default-time-zone = '+8:00'
log_timestamps = SYSTEM
log-bin =
binlog_format=row
binlog_checksum=NONE
log-slave-updates=1
gtid-mode=ON
enforce-gtid-consistency=ON
skip_name_resolve
default_authentication_plugin=mysql_native_password
max_allowed_packet = 500M
master_info_repository=TABLE
relay_log_info_repository=TABLE
relay_log=mysql-mgr-slave-relay-bin-ip102
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= "172.72.0.102:33012"
loose-group_replication_group_seeds= "172.72.0.101:33011,172.72.0.102:33012,172.72.0.103:33013"
loose-group_replication_bootstrap_group=OFF
loose-group_replication_ip_whitelist="172.72.0.101,172.72.0.102,172.72.0.103"
report_host=172.72.0.102
report_port=3306
EOF
d、 mysql-mgr集群slave02配置文件
bash
sudo touch /home/mysql-mgr/mysql-mgr-slave02/conf.d/my.cnf
sudo chmod 777 /home/mysql-mgr/mysql-mgr-slave02/conf.d/my.cnf
sudo cat > /home/mysql-mgr/mysql-mgr-slave02/conf.d/my.cnf <<"EOF"
[mysqld]
user=mysql
port=3306
character_set_server=utf8mb4
secure_file_priv=''
server-id = 2024050403
default-time-zone = '+8:00'
log_timestamps = SYSTEM
log-bin =
binlog_format=row
binlog_checksum=NONE
log-slave-updates=1
gtid-mode=ON
enforce-gtid-consistency=ON
skip_name_resolve
default_authentication_plugin=mysql_native_password
max_allowed_packet = 500M
master_info_repository=TABLE
relay_log_info_repository=TABLE
relay_log=mysql-mgr-slave-relay-bin-ip103
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= "172.72.0.103:33013"
loose-group_replication_group_seeds= "172.72.0.101:33011,172.72.0.102:33012,172.72.0.103:33013"
loose-group_replication_bootstrap_group=OFF
loose-group_replication_ip_whitelist="172.72.0.101,172.72.0.102,172.72.0.103"
report_host=172.72.0.103
report_port=3306
EOF
bash
sudo chmod 644 /home/mysql-mgr/mysql-mgr-master/conf.d/my.cnf
sudo chmod 644 /home/mysql-mgr/mysql-mgr-slave01/conf.d/my.cnf
sudo chmod 644 /home/mysql-mgr/mysql-mgr-slave02/conf.d/my.cnf
7、重启容器
bash
docker restart `docker ps -a |grep mysql-mgr |awk -F " " '{print $1}'`
结果:
victor_t400@victort400:/home$ docker restart `docker ps -a |grep mysql-mgr |awk -F " " '{print $1}'`
3bba9175355e
329c7a28c17c
68df336dad9b
8、进入容器,配置集群
a、进入主节点
红色部分代表要操作的
进入主节点容器
victor_t400@victort400:/home$ docker exec -it mysql-mgr-master /bin/bash
登录mysql
root@mysql-mgr-master:/# mysql -uroot -p
输入密码
Enter password:Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.20 MySQL Community Server - GPL
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
查看hostname,server_id和server_uuid
mysql> select @@hostname,@@server_id,@@server_uuid;
+------------------+-------------+--------------------------------------+
| @@hostname | @@server_id | @@server_uuid |
+------------------+-------------+--------------------------------------+
| mysql-mgr-master | 2024050401 | 54c9ae3b-09f8-11ef-9b8d-0242ac480065 |
+------------------+-------------+--------------------------------------+
1 row in set (0.01 sec)
主节点安装MGR插件
mysql> INSTALL PLUGIN group_replication SONAME 'group_replication.so';
Query OK, 0 rows affected (0.06 sec)
显示安装的插件
mysql> show plugins;
+---------------------------------+----------+--------------------+----------------------+---------+
| Name | Status | Type | Library | License |
+---------------------------------+----------+--------------------+----------------------+---------+
太多了,删除一部分
| mysqlx_cache_cleaner | ACTIVE | AUDIT | NULL | GPL |
| mysqlx | ACTIVE | DAEMON | NULL | GPL |
| group_replication | ACTIVE | GROUP REPLICATION | group_replication.so | GPL |
+---------------------------------+----------+--------------------+----------------------+---------+
45 rows in set (0.01 sec)
这里开始设置复制账号(所有节点执行)
mysql> SET SQL_LOG_BIN=0;
Query OK, 0 rows affected (0.00 sec)
mysql> CREATE USER repl@'%' IDENTIFIED BY '123456';
Query OK, 0 rows affected (0.04 sec)
mysql> GRANT REPLICATION SLAVE ON *.* TO repl@'%';
Query OK, 0 rows affected (0.04 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)
mysql> SET SQL_LOG_BIN=1;
Query OK, 0 rows affected (0.00 sec)
mysql> CHANGE MASTER TO MASTER_USER='repl', MASTER_PASSWORD='123456' FOR CHANNEL 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (0.74 sec)
启动MGR主模式,启动MGR,在主库上执行
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 (4.43 sec)
mysql> SET GLOBAL group_replication_bootstrap_group=OFF;
Query OK, 0 rows affected (0.00 sec)
查看MGR组信息
mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 54c9ae3b-09f8-11ef-9b8d-0242ac480065 | 172.72.0.101 | 3306 | ONLINE | PRIMARY | 8.0.20 |
+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
1 row in set (0.00 sec)
mysql>
重启了一下,就全关了,为什么啊为什么啊,前面拉起时,没有--restart always 设置,所以不自启动,后面我们再来设置,现在用下面的来
victor_t400@victort400:~$ docker start 26b69bc2a374
26b69bc2a374
victor_t400@victort400:~$ docker start ee9ac39c7cf9
ee9ac39c7cf9
victor_t400@victort400:~$ docker start 20f7e28c414e
20f7e28c414e
docker update --restart=always 容器名称
b、进入slave01节点
进入从节点01容器
victor_t400@victort400:/home$ docker exec -it mysql-mgr-slave01 /bin/bash
进入数据库
root@mysql-mgr-slave01:/# mysql -uroot -p
Enter password:在这里搞半天,输入密码不行,结果是不需要密码,不是明明我前面设置密码的,而且和主节点一模一样,主节点需要密码,他不要,你说见鬼了,
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 17
Server version: 8.0.20 MySQL Community Server - GPL
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
slave01安装MGR插件
mysql> INSTALL PLUGIN group_replication SONAME 'group_replication.so';
Query OK, 0 rows affected (0.07 sec)
显示插件
mysql> show plugins;
+---------------------------------+----------+--------------------+----------------------+---------+
| Name | Status | Type | Library | License |
+---------------------------------+----------+--------------------+----------------------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
。。。。。。。
| mysqlx_cache_cleaner | ACTIVE | AUDIT | NULL | GPL |
| mysqlx | ACTIVE | DAEMON | NULL | GPL |
| group_replication | ACTIVE | GROUP REPLICATION | group_replication.so | GPL |+---------------------------------+----------+--------------------+----------------------+---------+
45 rows in set (0.00 sec)
设置复制账号
mysql> SET SQL_LOG_BIN=0;
Query OK, 0 rows affected (0.00 sec)
mysql> CREATE USER repl@'%' IDENTIFIED BY '123456';
Query OK, 0 rows affected (0.09 sec)
mysql> GRANT REPLICATION SLAVE ON *.* TO repl@'%';
Query OK, 0 rows affected (0.06 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
mysql> SET SQL_LOG_BIN=1;
Query OK, 0 rows affected (0.00 sec)
mysql> CHANGE MASTER TO MASTER_USER='repl', MASTER_PASSWORD='123456' FOR CHANNEL 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (0.64 sec)
加入MGR从节点01:
mysql> START GROUP_REPLICATION;
Query OK, 0 rows affected (5.02 sec)
查看MGR组信息,有两个了
mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 54c9ae3b-09f8-11ef-9b8d-0242ac480065 | 172.72.0.101 | 3306 | ONLINE | PRIMARY | 8.0.20 |
| group_replication_applier | 6607103a-09f8-11ef-bb93-0242ac480066 | 172.72.0.102 | 3306 | RECOVERING | SECONDARY | 8.0.20 |+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
2 rows in set (0.00 sec)
mysql>
c、进入进入slave02节点
和节点slave01一样,就不说明了,一步一步来好了,有些可以一起执行,但是一步步好像也不费什么事情
bash
docker exec -it mysql-mgr-slave02 bash
---------------------------
mysql -uroot -p
-------------------------------
-----后面都是在mysql执行,可以一把梭
INSTALL PLUGIN group_replication SONAME 'group_replication.so';
show plugins;
SET SQL_LOG_BIN=0;
CREATE USER repl@'%' IDENTIFIED BY '123456';
GRANT REPLICATION SLAVE ON *.* TO repl@'%';
FLUSH PRIVILEGES;
SET SQL_LOG_BIN=1;
CHANGE MASTER TO MASTER_USER='repl', MASTER_PASSWORD='123456' FOR CHANNEL 'group_replication_recovery';
START GROUP_REPLICATION;
SELECT * FROM performance_schema.replication_group_members;
mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | MEMBER_ROLE | MEMBER_VERSION |
+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
| group_replication_applier | 54c9ae3b-09f8-11ef-9b8d-0242ac480065 | 172.72.0.101 | 3306 | ONLINE | PRIMARY | 8.0.20 |
| group_replication_applier | 6607103a-09f8-11ef-bb93-0242ac480066 | 172.72.0.102 | 3306 | ONLINE | SECONDARY | 8.0.20 |
| group_replication_applier | 6dedeb9f-09f8-11ef-8447-0242ac480067 | 172.72.0.103 | 3306 | ONLINE | SECONDARY | 8.0.20 |
+---------------------------+--------------------------------------+--------------+-------------+--------------+-------------+----------------+
3 rows in set (0.00 sec)
这里可以看到3个都online 下面就测试了
只有主节点可以写入,其他节点只读,MGR单主模式搭建成功。
9、测试一下
内网测试(docker内网,我们进入到容器里面测试的)
目前我们还在slave02节点,下面创建一个数据库,结果--super-read-only应该是只读的意思,不让写
mysql> CREATE DATABASE test_mgr CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
ERROR 1290 (HY000): The MySQL server is running with the --super-read-only option so it cannot execute this statement
那我们退出 slave02节点,进入slave01节点
victor_t400@victort400:/home$ docker exec -it mysql-mgr-slave01 /bin/bash
root@mysql-mgr-slave01:/# mysql -uroot -p
Enter password:我是直接回车
mysql> CREATE DATABASE test_mgr CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
ERROR 1290 (HY000): The MySQL server is running with the --super-read-only option so it cannot execute this statement
mysql>
那我们重新打开一个ssh终端 ,进入主节点,可以看到,同样代码,主节点是可以创建数据库的
victor_t400@victort400:~$ docker exec -it mysql-mgr-master /bin/bash
root@mysql-mgr-master:/# mysql -uroot -p
Enter password:这里要输密码
mysql> CREATE DATABASE test_mgr CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Query OK, 1 row affected (0.34 sec)
mysql> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test_mgr |
+--------------------+
5 rows in set (0.02 sec)
创建一张表
mysql> use test_mgr;
Database changed
mysql> create table bookuser(
-> id INT PRIMARY KEY AUTO_INCREMENT, -- id
-> username varchar(32), --
-> userphone char(11), --
-> userpassword varchar(45) --
-> );
Query OK, 0 rows affected (1.60 sec)
mysql> show tables;
+--------------------+
| Tables_in_test_mgr |
+--------------------+
| bookuser |
| employees |
+--------------------+
2 rows in set (0.00 sec)
插入数据
bash
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (1,'Jack1','12345678911','good#111');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (2,'Jack2','12345678912','good#113');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (3,'Jack3','12345678913','good#112');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (4,'Jack4','12345678914','good#113');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (5,'Jack5','12345678915','good#144');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (6,'Jack6','12345678916','good#133');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (7,'Jack7','12345678917','good#144');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (8,'Jack8','12345678918','good#145');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (9,'Jack9','12345678919','good#112');
insert into test_mgr.bookuser(id,username,userphone,userpassword) values (10,'Jack10','12345678921','good#1178');
查询数据
mysql> select *from bookuser;
+----+----------+-------------+--------------+
| id | username | userphone | userpassword |
+----+----------+-------------+--------------+
| 2 | Jack2 | 12345678912 | good#113 |
| 3 | Jack3 | 12345678913 | good#112 |
| 4 | Jack4 | 12345678914 | good#113 |
| 5 | Jack5 | 12345678915 | good#144 |
| 6 | Jack6 | 12345678916 | good#133 |
| 7 | Jack7 | 12345678917 | good#144 |
| 8 | Jack8 | 12345678918 | good#145 |
| 9 | Jack9 | 12345678919 | good#112 |
| 10 | Jack10 | 12345678921 | good#1178 |
+----+----------+-------------+--------------+
9 rows in set (0.00 sec)
我们刚才那个终端还没有关掉,过去测试一下;
在 mysql-mgr-slave01数据库中
显示数据库,可以看到有喔,这可是在主节点那边建的,说明同步过来了
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test_mgr |
+--------------------+
5 rows in set (0.01 sec)
显示tables 有啊有
mysql> use test_mgr;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+--------------------+
| Tables_in_test_mgr |
+--------------------+
| bookuser |
| employees |
+--------------------+
2 rows in set (0.00 sec)
查询数据
mysql> select *from bookuser;
+----+----------+-------------+--------------+
| id | username | userphone | userpassword |
+----+----------+-------------+--------------+
| 2 | Jack2 | 12345678912 | good#113 |
| 3 | Jack3 | 12345678913 | good#112 |
| 4 | Jack4 | 12345678914 | good#113 |
| 5 | Jack5 | 12345678915 | good#144 |
| 6 | Jack6 | 12345678916 | good#133 |
| 7 | Jack7 | 12345678917 | good#144 |
| 8 | Jack8 | 12345678918 | good#145 |
| 9 | Jack9 | 12345678919 | good#112 |
| 10 | Jack10 | 12345678921 | good#1178 |
+----+----------+-------------+--------------+
9 rows in set (0.00 sec)
进入slave02中,也是可以的啊
mysql> select *from test_mgr.bookuser;
+----+----------+-------------+--------------+
| id | username | userphone | userpassword |
+----+----------+-------------+--------------+
| 2 | Jack2 | 12345678912 | good#113 |
| 3 | Jack3 | 12345678913 | good#112 |
| 4 | Jack4 | 12345678914 | good#113 |
| 5 | Jack5 | 12345678915 | good#144 |
| 6 | Jack6 | 12345678916 | good#133 |
| 7 | Jack7 | 12345678917 | good#144 |
| 8 | Jack8 | 12345678918 | good#145 |
| 9 | Jack9 | 12345678919 | good#112 |
| 10 | Jack10 | 12345678921 | good#1178 |
+----+----------+-------------+--------------+
9 rows in set (0.00 sec)
那我们集群安装就结束了,祝大家明天五一最后一天开开心心玩。
忘了,外网还没测试呢?用nvicat测试
先开放端口13066 23066 33066
sudo ufw allow 13066
sudo ufw allow 23066
sudo ufw allow 33066
sudo ufw reload
看看我们插入的数据还在。
10、还有个问题没解决
服务器重启后,mysql没启动,得设置下自启动
victor_t400@victort400:~$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
3bba9175355e mysql:8.0.20 "docker-entrypoint.s..." 2 hours ago Exited (0) About a minute ago mysql-mgr-slave02
329c7a28c17c mysql:8.0.20 "docker-entrypoint.s..." 2 hours ago Exited (0) About a minute ago mysql-mgr-slave01
68df336dad9b mysql:8.0.20 "docker-entrypoint.s..." 2 hours ago Exited (0) About a minute ago mysql-mgr-master
bash
#注意容器id用自己的
docker start 3bba9175355e
docker update --restart=always 3bba9175355e
docker start 329c7a28c17c
docker update --restart=always 329c7a28c17c
docker start 68df336dad9b
docker update --restart=always 68df336dad9b
重启后,好了,完工
victor_t400@victort400:~$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
3bba9175355e mysql:8.0.20 "docker-entrypoint.s..." 2 hours ago Up 5 minutes 0.0.0.0:33013->33013/tcp, :::33013->33013/tcp, 33060/tcp, 0.0.0.0:33066->3306/tcp, :::33066->3306/tcp mysql-mgr-slave02
329c7a28c17c mysql:8.0.20 "docker-entrypoint.s..." 2 hours ago Up 5 minutes 0.0.0.0:33012->33012/tcp, :::33012->33012/tcp, 33060/tcp, 0.0.0.0:23066->3306/tcp, :::23066->3306/tcp mysql-mgr-slave01
68df336dad9b mysql:8.0.20 "docker-entrypoint.s..." 2 hours ago Up 5 minutes 0.0.0.0:33011->33011/tcp, :::33011->33011/tcp, 33060/tcp, 0.0.0.0:13066->3306/tcp, :::13066->3306/tcp mysql-mgr-master
总结
redis和mysql安装,以前都是现成的,或者别人安装好的,自己装有时候用宝塔,还有些像php的环境,很少自己装,集群更加没装过,这样感谢csdn的朋友们提供的教程,不过也花了我很多时间,版本问题才是最大的问题,很多不一样