Вариант настройки групповой реплиации на основе дефолтных образов mysql 5.7

cicd/docker-compose.yml

@@ -1,22 +1,45 @@
 version: '3'
 services:
-  mysql:
-    image: mysql:5.6
-    hostname: "mysql"
-    container_name: mysql
-    command: --default-authentication-plugin=mysql_native_password
+
+  mysql_master:
+    image: mysql:5.7
+    hostname: "mysql_master"
+    container_name: mysql_master
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: root
-      MYSQL_DATABASE: app
       MYSQL_USER: app
       MYSQL_PASSWORD: app
-    volumes:
-      - /opt/mysql:/var/lib/mysql
-      - ./dbinit:/docker-entrypoint-initdb.d
+      MYSQL_DATABASE: app
+      MYSQL_PORT: 3306
+      MYSQL_LOWER_CASE_TABLE_NAMES: 0
     ports:
-      - "3306:3306"
+      - 13306:3306
+    volumes:
+      - ./mysql/mysql_master.conf:/etc/mysql/conf.d/mysql.conf.cnf
+      - /opt/mysql_master:/var/lib/mysql
+      - ./mysql/master_init:/docker-entrypoint-initdb.d
 
+  mysql_slave:
+    image: mysql:5.7
+    hostname: "mysql_slave"
+    container_name: mysql_slave
+    restart: always
+    environment:
+      MYSQL_ROOT_PASSWORD: root
+      MYSQL_USER: app
+      MYSQL_PASSWORD: app
+      MYSQL_DATABASE: app
+      MYSQL_PORT: 3306
+      MYSQL_LOWER_CASE_TABLE_NAMES: 0
+    ports:
+      - 23306:3306
+    depends_on:
+      - mysql_master
+    volumes:
+      - ./mysql/mysql_slave.conf:/etc/mysql/conf.d/mysql.conf.cnf
+      - /opt/mysql_slave:/var/lib/mysql
+      - ./mysql/slave_init:/docker-entrypoint-initdb.d
 
   app:
     build:
@@ -26,8 +49,8 @@ services:
     environment:
       APP_SERVER_ADDRESS: 0.0.0.0
       APP_SERVER_PORT: 8080
-      APP_DSN_HOST: mysql
-      APP_DSN_PORT: 3306
+      APP_DSN_HOST: mysql_master
+      APP_DSN_PORT: 13306
       APP_DSN_USER: app
       APP_DSN_PASS: app
       APP_DSN_BASE: app

cicd/init.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+  mysql:
+    image: mysql:5.6
+    hostname: "mysql"
+    container_name: mysql
+    command: --default-authentication-plugin=mysql_native_password
+    restart: always
+    environment:
+      MYSQL_ROOT_PASSWORD: root
+      MYSQL_DATABASE: app
+      MYSQL_USER: app
+      MYSQL_PASSWORD: app
+    volumes:
+      - /opt/mysql:/var/lib/mysql
+      - ./dbinit:/docker-entrypoint-initdb.d
+    ports:
+      - "3306:3306"
+
+
+
+
+
+docker-compose down
+rm -rf ./master/data/*
+rm -rf ./slave/data/*
+docker-compose build
+docker-compose up -d
+
+until docker exec mysql_master sh -c 'export MYSQL_PWD=111; mysql -u root -e ";"'
+do
+    echo "Waiting for mysql_master database connection..."
+    sleep 4
+done
+
+priv_stmt='GRANT REPLICATION SLAVE ON *.* TO "mydb_slave_user"@"%" IDENTIFIED BY "mydb_slave_pwd"; FLUSH PRIVILEGES;'
+docker exec mysql_master sh -c "export MYSQL_PWD=111; mysql -u root -e '$priv_stmt'"
+
+until docker-compose exec mysql_slave sh -c 'export MYSQL_PWD=111; mysql -u root -e ";"'
+do
+    echo "Waiting for mysql_slave database connection..."
+    sleep 4
+done
+
+docker-ip() {
+    docker inspect --format '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' "$@"
+}
+
+MS_STATUS=`docker exec mysql_master sh -c 'export MYSQL_PWD=111; mysql -u root -e "SHOW MASTER STATUS"'`
+CURRENT_LOG=`echo $MS_STATUS | awk '{print $6}'`
+CURRENT_POS=`echo $MS_STATUS | awk '{print $7}'`
+
+start_slave_stmt="CHANGE MASTER TO MASTER_HOST='$(docker-ip mysql_master)',MASTER_USER='mydb_slave_user',MASTER_PASSWORD='mydb_slave_pwd',MASTER_LOG_FILE='$CURRENT_LOG',MASTER_LOG_POS=$CURRENT_POS; START SLAVE;"
+start_slave_cmd='export MYSQL_PWD=111; mysql -u root -e "'
+start_slave_cmd+="$start_slave_stmt"
+start_slave_cmd+='"'
+docker exec mysql_slave sh -c "$start_slave_cmd"
+
+docker exec mysql_slave sh -c "export MYSQL_PWD=111; mysql -u root -e 'SHOW SLAVE STATUS \G'"

cicd/mysql/master_init/init.sql

@@ -0,0 +1,3 @@
+CREATE DATABASE IF NOT EXISTS `app` CHARACTER SET utf8 COLLATE utf8_general_ci;
+GRANT ALL ON `app`.* TO 'app'@'%' identified by 'app';
+GRANT REPLICATION SLAVE ON *.* TO 'app'@'%' identified by 'app';

cicd/mysql/mysql_master.conf

@@ -0,0 +1,9 @@
+[mysqld]
+
+skip-host-cache
+skip-name-resolve
+
+server-id = 1
+log_bin = /var/log/mysql/mysql-bin.log
+binlog_format = ROW
+binlog_do_db = mydb

cicd/mysql/mysql_slave.conf

@@ -0,0 +1,9 @@
+[mysqld]
+
+skip-host-cache
+skip-name-resolve
+
+server-id=2
+relay-log = /var/log/mysql/mysql-relay-bin.log
+log_bin = /var/log/mysql/mysql-bin.log
+binlog_do_db = mydb

cicd/mysql/slave_init/init.sql

@@ -0,0 +1,2 @@
+CREATE DATABASE IF NOT EXISTS `app` CHARACTER SET utf8 COLLATE utf8_general_ci;
+GRANT ALL ON `app`.* TO 'app'@'%' identified by 'app';