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
33 lines
3.5 KiB
Plaintext
33 lines
3.5 KiB
Plaintext
# downstream health indicator in NEITHER group (Spring Boot's default probe groups)
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# health groups: liveness= readiness=
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# t=0: kubectl scale deploy/downstream --replicas=0 t=60: back to 1
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t= 0s btcl4 ready=false restarts=0 terminated | 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 6s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 11s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 18s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 23s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 29s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 34s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 40s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 46s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 51s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 57s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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-------- downstream restored --------
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t= 62s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 69s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 75s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 80s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 86s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 91s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t= 97s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t=103s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t=109s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t=114s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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t=120s 7ltj7 ready=true restarts=0 running | cpnkk ready=true restarts=0 running | serving endpoints=2 GET /work via Service: ok
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# Events (probe failures and kills) for orders pods:
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2 Normal Killing Stopping container app
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1 Warning Unhealthy Startup probe failed: Get "http://10.42.0.207:8080/actuator/health/liveness": dial tcp 10.42.0.207:8080: connect: connection refused
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1 Warning Unhealthy Startup probe failed: Get "http://10.42.0.206:8080/actuator/health/liveness": dial tcp 10.42.0.206:8080: connect: connection refused
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