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
Logging
Recording and aggregating application and system events
Rolling Deployment
Incrementally updating instances replacing old with new
Observability
Understanding system state from external outputs
Ansible
Agentless automation tool using YAML playbooks
ArgoCD
GitOps continuous delivery tool for Kubernetes
Prometheus
Open-source monitoring and alerting toolkit for metrics