Google Professional Cloud Database Engineer Question 36
Select 3Google Cloud PlatformYou are managing a Cloud SQL for PostgreSQL instance in your production environment. Your team has been notified that a new minor version upgrade is available for PostgreSQL, which includes important security patches. You want to ensure the upgrade is performed with minimal disruption to your applications. Which steps should you take to plan and perform the upgrade?
- A
Schedule the upgrade during a maintenance window to minimize impact on production traffic.
- B
Enable high availability (HA) for the instance before upgrading to ensure failover in case of issues.
- C
Test the upgrade on a cloned instance before applying it to the production database.
- D
Upgrade the instance immediately without scheduling to apply critical security fixes faster.
- E
Review the compatibility of your application with the new PostgreSQL version before upgrading.
Show answer and explanation
Correct answers: A, C, E
Explanation
Planning a database upgrade for a Google Cloud-managed database like Cloud SQL involves minimizing risks and ensuring compatibility. Scheduling the upgrade during a maintenance window, testing on a cloned instance, and reviewing application compatibility are all critical steps to ensure a smooth upgrade process. Immediate upgrades without planning could lead to downtime, and while enabling HA improves reliability, it is not a direct step in the upgrade process.
- A. Correct.
Scheduling the upgrade during a maintenance window minimizes disruption to production traffic. This is a best practice for managed databases in Google Cloud.
- B. Incorrect.
While enabling high availability (HA) is a good practice for reliability, it is not directly required to perform an upgrade. It won't mitigate issues during the upgrade process.
- C. Correct.
Testing the upgrade on a cloned instance ensures that the new version is compatible with your data and application, reducing the risk of production issues.
- D. Incorrect.
Performing an immediate upgrade without scheduling could lead to unexpected downtime or application issues. Proper planning is essential for production environments.
- E. Correct.
Reviewing application compatibility with the new PostgreSQL version ensures that the upgrade will not break any application functionality or introduce unexpected behavior.