在config.groovy文件中的config下面添加。迁移将在WAR部署期间运行。

//===========================DATA MIGRATION============================
//Run changelog.groovy during application deployment on server?
grails.plugin.databasemigration.updateOnStart = true
//File used to run the db migration scripts
grails.plugin.databasemigration.updateOnStartFileNames = ['changelog.groovy']
//Absolute path of changelog.groovy in the app base dir
grails.plugin.databasemigration.changelogLocation = 'migrations'
//  the default schema to use when running auto-migrate on start
//grails.plugin.databasemigration. updateOnStartDefaultSchema ='schema' // You may not need this in MYSQL
//=====================================================================

基于以上配置，这是文件夹结构应为的方式：

your-grails-project
      --migrations/
          --changelog.groovy
          --migration1.groovy
          --migration2.groovy

changelog.groovy

databaseChangeLog = { 
  include file: 'migration1.groovy'
  include file: 'migration2.groovy'
}