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Progressive Delivery with ArgoCD Blue-Green Deployments apiVersion: argoproj.io/v1alpha1 kind: Application metadata: name: blue-green-app spec: source: plugin: name: argocd-rollouts repoURL: https://github.com/org/app.git targetRevision: HEAD path: rollouts/ destination: server: https://kubernetes.default.svc namespace: production --- apiVersion: argoproj.io/v1alpha1 kind: Rollout metadata: name: blue-green-rollout spec: replicas: 3 strategy: blueGreen: activeService: active-service previewService: preview-service autoPromotionEnabled: false template: spec: containers: - name: app image: app:1.0 Multi-Cluster Management Cluster Configuration apiVersion: argoproj.io/v1alpha1 kind: ApplicationSet metadata: name: multi-cluster-apps spec: generators: - clusters: {} template: metadata: name: '{{name}}-app' spec: project: default source: repoURL: https://github.com/org/app-configs.git targetRevision: HEAD path: environments/{{name}} destination: server: '{{server}}' namespace: production Sync Strategies Selective Sync apiVersion: argoproj.io/v1alpha1 kind: Application metadata: name: selective-sync-app annotations: argocd.argoproj.io/sync-wave: "5" spec: syncPolicy: automated: prune: true selfHeal: true syncOptions: - CreateNamespace=true - PruneLast=true - ApplyOutOfSyncOnly=true source: directory: recurse: true exclude: 'excluded-patterns/**' Production Example # Complete production deployment setup apiVersion: argoproj.io/v1alpha1 kind: Application metadata: name: production-deployment annotations: notifications.argoproj.io/subscribe.on-sync-succeeded.slack: production-deploys spec: project: production source: repoURL: https://github.com/org/production-config.git targetRevision: main path: overlays/production directory: recurse: true jsonnet: extVars: - name: environment value: production destination: server: https://kubernetes.default.svc namespace: production syncPolicy: automated: prune: true selfHeal: true syncOptions: - CreateNamespace=true - ServerSideApply=true retry: limit: 5 backoff: duration: 5s factor: 2 maxDuration: 3m ignoreDifferences: - group: apps kind: Deployment jsonPointers: - /spec/replicas

Core Ingress Patterns Basic HTTPS Configuration apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: secure-ingress annotations: nginx.ingress.kubernetes.io/ssl-redirect: "true" spec: tls: - hosts: - app.example.com secretName: tls-secret rules: - host: app.example.com http: paths: - path: / pathType: Prefix backend: service: name: app-service port: number: 80 Advanced Configurations 1. Path-Based Routing apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: path-based-ingress spec: rules: - host: api.example.com http: paths: - path: /v1 pathType: Prefix backend: service: name: api-v1-service port: number: 80 - path: /v2 pathType: Prefix backend: service: name: api-v2-service port: number: 80 2. Rate Limiting metadata: annotations: nginx.ingress.kubernetes.io/limit-rps: "10" nginx.ingress.kubernetes.io/limit-connections: "5" Best Practices SSL Configuration ...

Overview This guide walks through my automated macOS setup and backup workflow. The goals: Quickly set up a new Mac by running a single bootstrap script. Avoid manually remembering installed apps, preferences, and configs. Automatically back up my dotfiles and Homebrew installs to a GitHub repo. Include App Store apps, macOS preferences, and even my AirPrint printer. Core Components 1. Homebrew Bundle I use Homebrew’s brew bundle dump to capture all my brew formulas, casks, and MAS (Mac App Store) apps into a Brewfile. ...

The Challenge of Agent Updates Keeping monitoring agents up-to-date is very important for maintaining effective observability in your systems. However, manual updates can be time-consuming and often get overlooked. This post demonstrates a very simple way of how to automate NewRelic agent updates in a Windows environment. Infrastructure Agent Update Script Create a PowerShell script to update the NewRelic Infrastructure agent: Stop-Service -Name “newrelic-infra” (New-Object System.Net.WebClient).DownloadFile( “https://download.newrelic.com/infrastructure_agent/windows/newrelic-infra.msi", “$env:TEMP\newrelic-infra.msi” ) msiexec.exe /qn /i “$env:TEMP\newrelic-infra.msi” Start-Service -Name “newrelic-infra” ...

Content Delivery Networks (CDNs) are fundamental to modern web architecture. Let’s explore key design patterns and implementation strategies for optimal content delivery. CDN Architecture Fundamentals Edge Location Strategy Effective CDN implementation requires careful planning of edge locations: Geographic Distribution Place edge nodes near user concentrations Consider regional traffic patterns Account for network topology Cache Strategy Static content: Aggressive caching Dynamic content: TTL-based invalidation API responses: Selective caching Implementation Patterns 1. Origin Shield Configuration # Nginx origin shield configuration location / { proxy_cache_use_stale error timeout http_500 http_502 http_503 http_504; proxy_cache_valid 200 302 1h; proxy_cache_valid 404 1m; proxy_cache my_cache_zone; proxy_cache_key $scheme$proxy_host$request_uri; } 2. Cache Control Headers Implement proper cache control headers: ...