[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-09-05。"],[[["\u003cp\u003eFor Amazon RDS MySQL sources with hostnames exceeding 60 characters, configure a DNS redirect using a CNAME record to associate your domain name with the RDS instance's domain name.\u003c/p\u003e\n"],["\u003cp\u003eBinary logs for the migration process must be stored on standard block storage, not Amazon S3.\u003c/p\u003e\n"],["\u003cp\u003eContinuous migration jobs using manual dumps necessitate that \u003ccode\u003eGTID\u003c/code\u003e is enabled, with the \u003ccode\u003eGTID_MODE\u003c/code\u003e set to either \u003ccode\u003eON\u003c/code\u003e, \u003ccode\u003eOFF\u003c/code\u003e, or \u003ccode\u003eOFF_PERMISSIVE\u003c/code\u003e, as \u003ccode\u003eON_PERMISSIVE\u003c/code\u003e is not supported.\u003c/p\u003e\n"],["\u003cp\u003eTo ensure a successful initial full dump, writes to the source database should be halted for approximately 20 seconds, either by using a read replica or directly on the source.\u003c/p\u003e\n"],["\u003cp\u003eThe migration job status, trackable via the API, Console, or Cloud Monitoring, indicates when to stop writes (\u003cstrong\u003eStarting | Waiting for source writes to stop\u003c/strong\u003e) and resume writes (\u003cstrong\u003eRunning | Full dump in progress\u003c/strong\u003e).\u003c/p\u003e\n"]]],[],null,["# Migrating from Amazon RDS MySQL without SUPERUSER privileges\n\n\u003cbr /\u003e\n\nSuccessfully creating and running a migration job with an Amazon RDS MySQL source or\nsources that don't allow SUPERUSER privileges can require a few additional steps.\n\nCreate the Amazon RDS MySQL migration job\n-----------------------------------------\n\n1. MySQL limits the source hostname definition to 60 characters. Amazon RDS\n databases hostnames will typically be longer than 60 characters. If this\n is the case for the database you are migrating, configure\n a DNS redirect to create a\n [CNAME record](https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-choosing-alias-non-alias.html)\n that associates your domain name with the domain name of your Amazon RDS DB\n instance. You can read more about setting up DNS CNAME in the\n [Cloud DNS documentation](/dns/docs/set-up-dns-records-domain-name) or in the\n [AWS Route53 documentation](https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-to-rds-db.html).\n\n2. Binary logs must be stored on standard block storage and cannot be stored\n on Amazon S3.\n\n3. Creating a continuous migration job with a manual dump provided requires\n `GTID` to be enabled. `GTID_MODE` must be either\n \u003cvar translate=\"no\"\u003eON\u003c/var\u003e, \u003cvar translate=\"no\"\u003eOFF\u003c/var\u003e, or \u003cvar translate=\"no\"\u003eOFF_PERMISSIVE\u003c/var\u003e. The `GTID_MODE` value of\n \u003cvar translate=\"no\"\u003eON_PERMISSIVE\u003c/var\u003e isn't supported.\n\nRun the migration job\n---------------------\n\nTo take the initial full dump, both for MySQL Amazon RDS and for sources with no `SUPERUSER` privilege, writes should be stopped at the source for approximately 20 seconds.\n\nYou can stop writes either by migrating from a read replica or by stopping writes directly on the source database.\n\nTo migrate from a read replica:\n\n1. Create a read replica in Amazon Web Services (AWS).\n\n2. Configure the Database Migration Service source connection profile with the connectivity information of the AWS read replica.\n\n3. After the status of the migration job changes to **Starting \\| Waiting for source writes to stop**, disable replication between the AWS primary and its read replica for approximately 20 seconds.\n\n4. After the status of the migration job changes to **Running \\| Full dump in progress**, re-enable replication to the read replica in AWS.\n\nInstead of stopping writes by migrating from a read replica in AWS, you can stop writes directly on the source database. You can use [a script](/database-migration/docs/mysql/debugging-tools#write-activities) to verify that all writing to the source database is stopped.\n\nIndication of when to stop and resume writes is in the status and substatus of\nthe migration job. The status changes can be tracked in the API, Console or\ndirectly in Cloud Monitoring:\n\n1. After the status changes to **Starting \\| Waiting for source writes to stop** ,\n writing should be stopped to the source database. Database Migration Service identifies that the writing stopped, and the status changes to **Running \\| Preparing the dump**.\n\n2. After the status changes to **Running \\| Full dump in progress**, it's safe\n to resume writing to the source database.\n\nDatabase Migration Service keeps trying to take the initial dump for approximately 20 minutes. If writes haven't been stopped, or if writes are resumed before the status update, then the process fails and returns an error describing the cause of the failure."]]
