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I’ve seen a few AWS instance hardware failures, they happen with some regularity. You can handle single instance failure without being multi AZ. Testing an ac
by WatchDog 4y ago
I’ve seen a few AWS instance hardware failures, they happen with some regularity.
You can handle single instance failure without being multi AZ.
Testing an actual AZ failure, as in the whole AZ going offline or getting partitioned from the other AZs, is pretty much impossible.
- fulafel 4y agoAZs are connected via normal user visible networks, you can just break those. They even provide examples, https://github.com/awslabs/aws-well-architected-labs/tree/master/static/Reliability/300_Testing_for_Resiliency_of_EC2_RDS_and_S3/Code/FailureSimulations https://github.com/awslabs/aws-well-architected-labs/tree/ma... Those are basic (don't cover flapping or glacial-speed slowdown degradation modes, some services only, etc) but a starting point at least that can be extended.
- ceejayoz 4y agoHuh, didn't know about aws rds reboot-db-instance --force-failover