Automation script for MySQL 8.0 data migration

examples/migration-8.0/.env

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+DB_ROOT_PASSWORD='secret'
+DB_USER='testuser'
+DB_PASSWORD='password'
+DB_DATABASE='testdb'
+MYSQL_name='mysql-container'
+MARIADB_DUMP_name='mariadb-container-dump'
+MARIADB_MIGRATED_name='mariadb-migrated-mysql8.0'

examples/migration-8.0/compose-mysql8.0.yml

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+version: "3"
+
+services:
+ mysql:
+ environment:
+ MYSQL_ROOT_PASSWORD: ${DB_ROOT_PASSWORD}
+ MYSQL_USER: ${DB_USER}
+ MYSQL_PASSWORD: ${DB_PASSWORD}
+ MYSQL_DATABASE: ${DB_DATABASE}
+ container_name: ${MYSQL_name}
+ image: mysql:8.3.0
+ healthcheck:
+ test: ["CMD", "mysqladmin", "ping", "-h", "127.0.0.1", "--silent"]
+ interval: 20s
+ timeout: 20s
+ retries: 2
+ start_period: 0s
+ volumes:
+ # Preload files for MySQL data
+ - ./mysql:/docker-entrypoint-initdb.d:z
+ # We have to save MySQL volume that will be used in upgrade
+ - dbdata:/var/lib/mysql
+ networks:
+ - backend
+
+# Sidecar for dumping files
+ mariadb-dump:
+ environment:
+ MARIADB_ROOT_PASSWORD: ${DB_ROOT_PASSWORD}
+ MARIADB_USER: ${DB_USER}
+ MARIADB_PASSWORD: ${DB_PASSWORD}
+ container_name: ${MARIADB_DUMP_name}
+ image: mariadb:lts
+ depends_on:
+ mysql:
+ condition: service_healthy
+ healthcheck:
+ test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
+ start_period: 10s
+ interval: 20s
+ timeout: 20s
+ retries: 3
+ # command: >
+ # bash -c "
+ # echo 'MariaDB service started. Dump MySQL data ...'
+ # mariadb-dump -h mysql-container -uroot -psecret testdb > /etc/dump/mysql-dump-data.sql"
+ # user: ${UID}:${EUID}
+ volumes:
+ - mysqldump:/etc/dump/
+ # This will not exit container, but command: will
+ - ./dump-mysql.sh:/docker-entrypoint-initdb.d/dump-mysql.sh
+ networks:
+ - backend
+ # entrypoint: ["/docker-entrypoint-initdb.d/dump-mysql.sh"]
+
+# We cannot share the same dump directory, we need to stop mariadb-dump
+ stopper:
+ image: docker:20.10
+ depends_on:
+ mariadb-dump:
+ condition: service_healthy
+ volumes:
+ - /var/run/docker.sock:/var/run/docker.sock
+ command: ["sh", "-c", "docker stop mariadb-container-dump"]
+
+# Sidecar for insert dump file
+ mariadb-migrated-from-mysql8:
+ environment:
+ MARIADB_ROOT_PASSWORD: ${DB_ROOT_PASSWORD}
+ MARIADB_USER: ${DB_USER}
+ MARIADB_PASSWORD: ${DB_PASSWORD}
+ container_name: ${MARIADB_MIGRATED_name}
+ image: mariadb:lts
+ depends_on:
+ mariadb-dump:
+ condition: service_completed_successfully
+ volumes:
+ - mysqldump:/etc/dump/
+ - ./migrate-mariadb.sh:/docker-entrypoint-initdb.d/migrate-mariadb.sh
+ networks:
+ - backend
+
+volumes:
+ dbdata: {}
+ # sudo chown -R 999:999 ${PWD}/dump-data # host
+ mysqldump:
+ driver: local
+ driver_opts:
+ type: none
+ device: "${PWD}/dump-data"
+ o: bind
+
+networks:
+ backend:

examples/migration-8.0/dump-data/mysql-dump-data-utf8mb4_unicode_ci.sql

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+-- MariaDB dump 10.19 Distrib 10.11.6-MariaDB, for debian-linux-gnu (x86_64)
+--
+-- Host: mysql-container Database: testdb
+-- ------------------------------------------------------
+-- Server version 8.3.0
+
+/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
+/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
+/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
+/*!40101 SET NAMES utf8mb4 */;
+/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
+/*!40103 SET TIME_ZONE='+00:00' */;
+/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
+/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
+/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
+/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
+
+--
+-- Table structure for table `countries`
+--
+
+DROP TABLE IF EXISTS `countries`;
+/*!40101 SET @saved_cs_client = @@character_set_client */;
+/*!40101 SET character_set_client = utf8 */;
+CREATE TABLE `countries` (
+ `name` char(20) DEFAULT NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+/*!40101 SET character_set_client = @saved_cs_client */;
+
+--
+-- Dumping data for table `countries`
+--
+
+LOCK TABLES `countries` WRITE;
+/*!40000 ALTER TABLE `countries` DISABLE KEYS */;
+INSERT INTO `countries` VALUES
+('Bosnia & Herzegovina');
+/*!40000 ALTER TABLE `countries` ENABLE KEYS */;
+UNLOCK TABLES;
+/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
+
+/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
+/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
+/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
+/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
+/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
+/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
+
+-- Dump completed on 2024-02-12 13:48:45

examples/migration-8.0/dump-data/mysql-dump-data.sql

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+-- MariaDB dump 10.19 Distrib 10.11.6-MariaDB, for debian-linux-gnu (x86_64)
+--
+-- Host: mysql-container Database: testdb
+-- ------------------------------------------------------
+-- Server version 8.3.0
+
+/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
+/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
+/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
+/*!40101 SET NAMES utf8mb4 */;
+/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
+/*!40103 SET TIME_ZONE='+00:00' */;
+/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
+/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
+/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
+/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
+
+--
+-- Table structure for table `countries`
+--
+
+DROP TABLE IF EXISTS `countries`;
+/*!40101 SET @saved_cs_client = @@character_set_client */;
+/*!40101 SET character_set_client = utf8 */;
+CREATE TABLE `countries` (
+ `name` char(20) DEFAULT NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
+/*!40101 SET character_set_client = @saved_cs_client */;
+
+--
+-- Dumping data for table `countries`
+--
+
+LOCK TABLES `countries` WRITE;
+/*!40000 ALTER TABLE `countries` DISABLE KEYS */;
+INSERT INTO `countries` VALUES
+('Bosnia & Herzegovina');
+/*!40000 ALTER TABLE `countries` ENABLE KEYS */;
+UNLOCK TABLES;
+/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
+
+/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
+/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
+/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
+/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
+/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
+/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
+
+-- Dump completed on 2024-02-12 13:48:45

examples/migration-8.0/dump-mysql.sh

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+#!/bin/bash
+
+echo 'MariaDB service started. Dump MySQL data ...'
+# Run your commands and exit container
+whoami # mysql"
+# sh -c "chown -R mysql:mysql /etc/dump" # Operation permitted
+# sh -c "ls -la /etc/dump"
+sh -c "mariadb-dump -h mysql-container -uroot -psecret testdb > /etc/dump/mysql-dump-data.sql"
+sh -c "ls -la /etc/dump/"
+echo "List before"
+sh -c "cp /etc/dump/mysql-dump-data.sql /etc/dump/mysql-dump-data-utf8mb4_unicode_ci.sql"
+sh -c "ls -la /etc/dump/"
+echo "List after"
+sh -c "sed -i 's/utf8mb4_0900_ai_ci/utf8mb4_unicode_ci/g' /etc/dump/mysql-dump-data-utf8mb4_unicode_ci.sql"

examples/migration-8.0/migrate-mariadb.sh

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+#!/bin/bash
+echo "Show data in MariaDB"
+mariadb -uroot -psecret -e "create database testdb;"
+mariadb -uroot -psecret testdb < /etc/dump/mysql-dump-data-utf8mb4_unicode_ci.sql
+mariadb -uroot -psecret -e "show databases; select * from countries;"

examples/migration-8.0/mysql/mysql-data.sql

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+DROP TABLE IF EXISTS countries;
+CREATE TABLE countries(name char(20));
+INSERT INTO countries values ("Bosnia & Herzegovina");