Two servers, same setup. Why are they different now?
You'll learn to
explain why patched servers drift apart and why replacing beats patching
Recap
- 1Mutable = change servers in place: they drift apart ("snowflakes")
- 2Immutable = replace from the blueprint: every server matches its code
- 3In a plan, -/+ means replace ("# forces replacement")
Check yourself
Your team upgrades software on running servers, one by one. Which model is that?
1.2
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