Aurora cluster primary instance reboot

[christian-graseman]

Hi,

In your Aurora cheat sheets it says “When you reboot the primary instance of an Aurora DB cluster, RDS also automatically restarts all of the Aurora Replicas in that DB cluster.” Is that really correct?

In the AWS docs it says ” If you reboot the writer instance for the primary cluster in an Aurora global database, the reader instances in the primary cluster remain available.”
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/USER_RebootCluster.html

[Carlo-TutorialsDojo]

Hello christian,

Thanks for the feedback.

That new update will reflect on 2.10 versions and up for Aurora Global Databases according to AWS docs. Global Database is an optional feature in Aurora and the document doesn’t say it applies to normal Aurora DB clusters. However, AWS might support it in the future given how big improvements are in their past updates.

Let me know if this answers your query.

Regards,

Carlo @ Tutorials Dojo

• This reply was modified 2 years, 8 months ago by  Carlo-TutorialsDojo.

[christian-graseman]

Thanks for the response, Carlo!

But actually, a bit further down on the same page it says: “These next examples show a cluster that runs Aurora MySQL version 2.10. In this Aurora MySQL version and higher, you can reboot the writer instance without causing reboots for all the reader instances.”

So, it’s not only global database. I agree that it’s not really clear if it applies to all Aurora versions 2.10 and up.

[Carlo-TutorialsDojo]

Hello christian,

Thanks for the reply.

I see. This is quite tricky as this feature was just announced last May 25, so it’s pretty new. Take note that any new services or features need to be available for 6 months before they are reflected in the actual AWS exam.

We will eventually update our questions/cheat sheets once we’ve confirmed that AWS has also updated their exam. This way, our cheat sheets/questions will stay more relevant and closer to the current AWS exam.

Let me know if you have other queries.

Regards,

Carlo @ Tutorials Dojo