DevOps
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Immutable Infrastructure
Quick Definition
Replacing servers instead of modifying them for updates
Full Definition
An approach where servers are never modified after deployment and replaced with new instances for updates.
Examples
container deployments, VM images, zero-downtime updates
Related Terms
infrastructure-as-code
containers
devops
More DevOps Terms
Blue-Green Deployment
Strategy with two identical environments for zero-downtime switching
SRE
Applying software engineering principles to operations
Alerting
Notifying teams when metrics exceed thresholds
Rolling Deployment
Incrementally updating instances replacing old with new
SLO
Target value for a service level indicator over time
Istio
Open platform for managing microservices with service mesh