Ankur Mhatre
4b6cefa60a
Companion repository for the ankurm.com article. Every transcript in docs/output/ was produced by running this project; scripts/run-all.sh regenerates all of them. Verified against Spring Boot 4.1.1 / Framework 7.0.9 / Security 7.1.1 / Micrometer 1.17.1 / kafka-clients 4.2.1 on Temurin JDK 25.0.4.1+1.
66 lines
1.9 KiB
Plaintext
66 lines
1.9 KiB
Plaintext
### profile: groups
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--- baseline: upstream UP ---
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GET /actuator/health HTTP 503
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GET /actuator/health/liveness HTTP 200
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GET /actuator/health/readiness HTTP 200
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GET /actuator/health/startup HTTP 200
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--- upstream DOWN (a third party is having an outage) ---
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GET /actuator/health HTTP 503
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GET /actuator/health/liveness HTTP 200
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GET /actuator/health/readiness HTTP 503
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GET /actuator/health/startup HTTP 200
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liveness stayed 200. readiness went 503.
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Kubernetes takes this instance out of the Service and leaves the process alone.
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Wire readiness to /actuator/health and you get a restart loop instead.
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--- what each group contains ---
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$ curl -s http://localhost:8080/actuator/health/liveness
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{
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"components": {
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"diskSpace": {
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"details": {
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"total": 10213466112,
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"free": 3877605376,
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"threshold": 10485760,
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"path": "/tmp/work/spring-boot-demo/.",
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"exists": true
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},
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"status": "UP"
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},
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"livenessState": {
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"status": "UP"
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}
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},
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"status": "UP"
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}
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$ curl -s http://localhost:8080/actuator/health/readiness
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{
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"components": {
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"externalApi": {
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"details": {
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"error": "org.springframework.web.client.HttpServerErrorException$ServiceUnavailable: 503 : \"upstream unavailable\"",
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"url": "http://localhost:8080/stub/upstream/ping",
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"latencyMs": 66,
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"timeoutMs": 750
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},
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"status": "DOWN"
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},
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"ordersDatabase": {
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"details": {
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"orders": 3,
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"queryMs": 0,
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"slowThresholdMs": 250
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},
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"status": "UP"
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},
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"readinessState": {
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"status": "UP"
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}
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},
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"status": "DOWN"
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}
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