asmhatreandClaude Opus 5
a065696478
Companion code for "Deploying Spring Boot 4 on Kubernetes: Probes, Graceful Shutdown, Limits and JVM Ergonomics". A dependency outage under three probe-group setups, a rolling restart under load four ways (three runs each), the JVM's ergonomic choices for nine pod shapes, one GC-heavy load under five CPU limits with throttling counters, and an HPA driven by a Micrometer gauge through prometheus-adapter. Measured on k3s v1.36.4. Co-Authored-By: Claude Opus 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01C3TETMrqVUWeFkNtz3Jbo3
55 lines
1.6 KiB
YAML
55 lines
1.6 KiB
YAML
# The baseline Deployment every scenario starts from. Scenario scripts patch it with the specific
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# change under test (see scripts/*.sh), so each transcript differs from this file in one place.
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: orders
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namespace: demo
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spec:
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replicas: 2
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selector:
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matchLabels: {app: orders}
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template:
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metadata:
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labels: {app: orders}
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spec:
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terminationGracePeriodSeconds: 30
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containers:
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- name: app
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image: sbd/k8s-demo:1
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imagePullPolicy: Never
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ports: [{name: http, containerPort: 8080}]
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env:
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- name: DEMO_DOWNSTREAM_URL
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value: http://downstream:8080/
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- name: JAVA_TOOL_OPTIONS
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value: "-XX:MaxRAMPercentage=75"
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resources:
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requests: {cpu: 250m, memory: 512Mi}
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limits: {memory: 512Mi}
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startupProbe:
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httpGet: {path: /actuator/health/liveness, port: http}
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periodSeconds: 2
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failureThreshold: 60
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livenessProbe:
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httpGet: {path: /actuator/health/liveness, port: http}
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periodSeconds: 5
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failureThreshold: 3
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readinessProbe:
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httpGet: {path: /actuator/health/readiness, port: http}
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periodSeconds: 2
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failureThreshold: 1
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lifecycle:
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preStop:
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sleep: {seconds: 5}
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: orders
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namespace: demo
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labels: {app: orders}
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spec:
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selector: {app: orders}
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ports: [{name: http, port: 8080, targetPort: http}]
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