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How can you automate the upgrade process to reduce human error in a multi-node Kubernetes cluster?

hard📝 Application Q9 of 15
Kubernetes - Production Best Practices
How can you automate the upgrade process to reduce human error in a multi-node Kubernetes cluster?
AManually run kubectl commands on each node in random order
BUse a CI/CD pipeline with scripts to drain, upgrade, and uncordon nodes sequentially
CUpgrade all nodes simultaneously using a single script without checks
DIgnore draining and upgrade nodes directly to save time
Step-by-Step Solution
Solution:

  1. Step 1: Identify automation best practice

    Automation with CI/CD pipelines reduces errors and enforces order.

  2. Step 2: Analyze options

    Only Use a CI/CD pipeline with scripts to drain, upgrade, and uncordon nodes sequentially describes a safe, sequential automated upgrade process.

  3. Final Answer:

    Use a CI/CD pipeline with scripts to drain, upgrade, and uncordon nodes sequentially -> Option B

  4. Quick Check:

    Automate upgrades with CI/CD pipelines [OK]
Quick Trick: Automate node upgrades with CI/CD pipelines [OK]
Common Mistakes:
  • Manual random upgrades
  • Upgrading all nodes at once unsafely
  • Skipping draining steps

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