Automate patching across a VM fleet
WHAT IT TESTS: fleet configuration management. OUTLINE: use a patch or config tool to target by tag, roll out in canaried waves with health checks, and prefer immutable golden images long term. RED FLAG: SSHing into each of 100 boxes by hand.
WHAT IT TESTS: whether you manage a fleet declaratively rather than by hand. ANSWER OUTLINE: use a managed patch or config tool such as Systems Manager Patch Manager or Ansible to target instances by tag and apply the patch consistently; roll out in staged waves with a canary, health checks, and automatic rollback to limit blast radius; schedule a maintenance window. Long term, bake patched golden images and replace instances immutably via the autoscaling group. RED FLAG: manually SSHing into all 100 machines.
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- #automation
- #patching
- #systems-manager
- #ansible
- #operations
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