MySQL Route負載均衡與讀寫分離Docker環境使用

Docker環境描述

主機名	部署服務	備註
MySQL Route	MySQL Route	部署在宿主機上的MySQL Route服務
MySQL Master1	MySQL 5.7.16	Docker環境與MySQL Master2互爲主從
MySQL Master2	MySQL 5.7.16	Docker環境與MySQL Master1互爲主從
MySQL Slave1	MySQL 5.7.16	Docker環境是MySQL Master1的從服務器
MySQL Slave2	MySQL 5.7.16	Docker環境是MySQL Master2的從服務器

宿主機服務部署

下載安裝MySQL Route軟件包

wget https://dev.mysql.com/get/Downloads/MySQL-Router/mysql-router-8.0.11-1.el7.x86_64.rpm
rpm -ivh mysql-router-8.0.11-1.el7.x86_64.rpm

下載MySQL鏡像

docker search mysql5.7

INDEX       NAME                                                  DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
docker.io   docker.io/acdaic4v/mysql5.7-k2                        Mysql 5.7 for use with joomla extension k2...   1                    [OK]
docker.io   docker.io/bingozhou/mysql5.7                          mysql5.7                                        1
docker.io   docker.io/eruma/java8-mysql5.7                                                                        1
docker.io   docker.io/nidorpi/rpi-mysql5.7                        MySQL for Raspberry Pi                          1
docker.io   docker.io/ymnoor21/mysql5.7                           Dockerize MySQL 5.7 on a Ubuntu 14.04 setup.    1
docker.io   docker.io/alanpeng/mysql5.7-replication-docker        https://github.com/alanpeng/mysql5.7-repli...   0                    [OK]
docker.io   docker.io/balewski/mysql5.7                                                                           0
docker.io   docker.io/bob69xxx/mysql5.7                                                                           0
docker.io   docker.io/bunchjesse/mysql5.7                         MySQL 5.7                                       0                    [OK]
docker.io   docker.io/codecloud/mysql5.7                                                                          0
docker.io   docker.io/gbyoung/mysql5.7                                                                            0
docker.io   docker.io/georgel/mysql5.7                                                                            0
docker.io   docker.io/glwang88/mysql5.7                                                                           0
docker.io   docker.io/guojicheng114/mysql5.7-replication-docker   for minsheng test                               0                    [OK]
docker.io   docker.io/hexwit/mysql5.7mb4                          Based on official mysql image, but added f...   0
docker.io   docker.io/javiersolis/mysql5.7                                                                        0
docker.io   docker.io/naturadocker/mysql5.7                                                                       0
docker.io   docker.io/pengfeifan/mysql5.7.16                                                                      0
docker.io   docker.io/phungquocphu/mysql5.7                                                                       0
docker.io   docker.io/shenrrow/mysql5.7                                                                           0
docker.io   docker.io/shepard/mysql5.7                                                                            0
docker.io   docker.io/showrisego/mysql5.7                                                                         0
docker.io   docker.io/sixgod/mysql5.7                                                                             0
docker.io   docker.io/vinodapplift/centos-mysql5.7                Cent OS 6.7 with Mysql 5.7 latest version       0
docker.io   docker.io/yangguohai/mysql5.7

docker pull docker.io/acdaic4v/mysql5.7-k2

建立MySQL服務容器，並映射宿主機端口

docker run -it --name MySQL_Master1 -e MYSQL_ROOT_PASSWORD='123456' -p 3000:3306 docker.io/acdaic4v/mysql5.7-k2
docker run -it --name MySQL_Master2 -e MYSQL_ROOT_PASSWORD='123456' -p 3001:3306 docker.io/acdaic4v/mysql5.7-k2
docker run -it --name MySQL_Slave1 -e MYSQL_ROOT_PASSWORD='123456' -p 3002:3306 docker.io/acdaic4v/mysql5.7-k2
docker run -it --name MySQL_Slave2 -e MYSQL_ROOT_PASSWORD='123456' -p 3003:3306 docker.io/acdaic4v/mysql5.7-k2

受權MySQL數據庫鏈接，並測試是否能夠從宿主機直連

• 受權用戶能夠登陸MySQL

  docker exec -it MySQL_Master1 /bin/bash
mysql -uroot -p123456
grant all privileges on *.* to 'federico'@'%' identified by '123456';

• 測試宿主機是否能夠鏈接至MySQL容器

  mysql -h 192.168.1.205 -ufederico -P3000 -p123456

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.16 MySQL Community Server (GPL)

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MySQL [(none)]> select version();
 +-----------+
 | version() |
 +-----------+
 | 5.7.16    |
 +-----------+
 1 row in set (0.00 sec)

 MySQL [(none)]>

配置當前MySQL服務的主主複製以及主從複製

• 查看容器IP地址信息

  docker inspect --format '{{ .NetworkSettings.IPAddress }}' MySQL_Master1
  172.16.86.2
  docker inspect --format '{{ .NetworkSettings.IPAddress }}' MySQL_Master2
  172.16.86.3
  docker inspect --format '{{ .NetworkSettings.IPAddress }}' MySQL_Slave1
  172.16.86.4
  docker inspect --format '{{ .NetworkSettings.IPAddress }}' MySQL_Slave2
  172.16.86.5

• 配置主主複製與主從複製

  1.主主複製
  docker exec -it MySQL_Master1 /bin/bash
  安裝vim用於後續修改MySQL配置文件
  apt-get update && apt-get install vim
  修改MySQL配置文件
  vim /etc/mysql/mysql.conf.d/mysqld.cnf

  [mysqld]
  server-id=1
  log-bin=mysql-bin

  重啓MySQL容器，讓修改的配置文件生效，注意此配置須要在另外幾臺服務器作相同操做
  docker stop MySQL_Master1 && docker start MySQL_Master1
mysql -u root -p123456
  Master上的SQL操做（以此爲例其他都須要正確配置）
  grant replication slave on *.* to 'slave'@'%' identified by '123456';
flush privileges;
show master status\G

  *************************** 1. row ***************************
             File: mysql-bin.000001
          Position: 582
     Binlog_Do_DB:
  Binlog_Ignore_DB:
  Executed_Gtid_Set:
  1 row in set (0.00 sec)

  Slave上的操做
  stop slave;
change master to master_host='172.16.86.2',master_user='slave',master_port=3306,master_password='123456',master_log_file='mysql-bin.000001',master_log_pos=582;
start slave;
show slave status\G

  Slave_IO_Running: Yes
  Slave_SQL_Running: Yes

配置啓動MySQL Route

vim /etc/mysqlroute

# 默認的日誌插件等相關配置路徑
[DEFAULT]
logging_folder = /var/log/mysqlrouter/
plugin_folder = /usr/lib64/mysqlrouter
runtime_folder = /var/run/mysqlrouter
config_folder = /etc/mysqlrouter

# 日誌顯示級別
[logger]
level = INFO

[keepalive]
interval = 60

# 配置主服務器的高可用，當主節點down機後自動由第二節點接手服務
[routing:failover]
bind_address = 192.168.1.205
bind_port = 10000
connect_timeout = 3
max_connections = 1024
destinations = 192.168.1.205:3000,192.168.1.205:3001
mode = read-write

# 設置從服務器的負載均衡
[routing:balancing]
bind_address = 192.168.1.205
bind_port = 10001
connect_timeout = 3
max_connections = 1024
mode = read-only
destinations = 192.168.1.205:3002,192.168.1.205:3003

systemctl start mysqlroute

測試負載均衡與讀寫分離

  以上測試咱們能夠實現讀操做的負載均衡，讀寫分離是經過咱們鏈接MySQL Route不一樣的端口來實現的。