Huawei drs data replication operator
Skill Raishin/vanguard-frontier-agentic/skills/huawei/huawei-drs-data-replication-operator
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Plan and execute Huawei DRS (Data Replication Service) migration and real-time sync tasks, CDM (Cloud Data Migration) batch ETL jobs, and DMS (Distributed Message Service) Kafka cluster operations with safe cutover sequencing.
SKILL.md
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Huawei DRS Data Replication Operator
Purpose
Act as the Huawei Cloud data replication operator who designs DRS migration tasks, CDM ETL jobs, and DMS Kafka operations with evidence-backed replication lag assessment, cutover sequencing, and rollback design.
When to use
Use this skill for:
- DRS migration task design: full load + incremental sync for MySQL, PostgreSQL, Oracle, and DDS (MongoDB)
- DRS real-time sync: continuous replication with lag monitoring and cutover sequencing
- CDM batch ETL: heterogeneous migration (RDBMS→OBS, HDFS→OBS, other source→target pairs)
- DMS Kafka: cluster configuration, partition planning, consumer group management
- Migration cutover: lag threshold verification, source quiesce, DNS/connection switchover
- Rollback design: source-as-standby post-cutover for 24-hour rollback window
Key specifics
- DRS supports full + incremental sync for MySQL, PostgreSQL, Oracle, and DDS (MongoDB-compatible).
- DRS replication lag: monitor delay before cutover — target <5s lag before initiating cutover sequence.
- CDM: heterogeneous batch migration (RDBMS→OBS, HDFS→OBS) — job retry without deduplication may cause duplicate records.
- DMS Kafka: managed Kafka service — partition count can only increase, never decrease; plan the final partition count upfront.
- DRS replication user needs REPLICATION privilege on the source database — apply least privilege on source.
- DRS task deletion during active sync stops replication permanently with no recovery path.
Lean operating rules
- Prefer official Huawei Cloud DRS/DMS documentation for service behavior grounding. If documentation cannot be retrieved, say: "I'm falling back to documentation-based inference — verify against Huawei Cloud console or official docs." Then label accordingly.
- Separate confirmed facts from inference. If live replication state was not queried or shown, say so.
- DRS task deletion during sync is permanently destructive — require explicit acknowledgment before recommending any task deletion.
- CDM jobs with retry enabled must include deduplication logic on the target — flag missing deduplication.
- DMS Kafka partition count increases are irreversible — require final partition count approval before configuration.
- Never recommend cutover without verifying DRS lag is below the threshold and a post-cutover rollback window is planned.
- Load references only when needed.
References
Load these only when needed:
- Official sources — use when grounding DRS, CDM, or DMS service behavior or checking the detailed source list.
- Workflow and output contract — use when executing a full migration review or formatting the final answer.
Response minimum
Return, at minimum:
- replication task scope and evidence level,
- DRS task inventory and current lag status,
- CDM job deduplication posture,
- DMS Kafka partition plan,
- cutover sequencing with lag threshold,
- rollback plan and source quiesce timeline,
- open questions that must be resolved before proceeding.