Hi
I am facing a "precondition failed: EOF" error on my elastic setup on kubernetes while configuring elastic java apm agent. I checked the service connectivity and it seems to be fine. Attaching the apm-server logs below -
[root@jenkins-mdev ~]$ kubectl logs -n elastic -l app=apm-server
{"log.level":"info","@timestamp":"2025-11-03T04:28:50.450Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":61},"message":"request ok","service.name":"apm-server","url.original":"/","http.request.method":"GET","user_agent.original":"kube-probe/1.31+","source.address":"10.27.18.23","http.request.body.bytes":0,"http.request.id":"40596c57-99ee-49bd-b52d-9160bde9b018","event.duration":110391,"http.response.status_code":200,"ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2025-11-03T04:28:50.450Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":61},"message":"request ok","service.name":"apm-server","url.original":"/","http.request.method":"GET","user_agent.original":"kube-probe/1.31+","source.address":"10.27.18.23","http.request.body.bytes":0,"http.request.id":"0938cb37-c360-4444-9650-4380b4a97746","event.duration":69193,"http.response.status_code":200,"ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2025-11-03T04:29:00.449Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":61},"message":"request ok","service.name":"apm-server","url.original":"/","http.request.method":"GET","user_agent.original":"kube-probe/1.31+","source.address":"10.27.18.23","http.request.body.bytes":0,"http.request.id":"f713d8b4-8494-4fa6-bb35-94cef3dfb938","event.duration":94294,"http.response.status_code":200,"ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2025-11-03T04:29:00.450Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":61},"message":"request ok","service.name":"apm-server","url.original":"/","http.request.method":"GET","user_agent.original":"kube-probe/1.31+","source.address":"10.27.18.23","http.request.body.bytes":0,"http.request.id":"8df28886-c6b4-42e0-9dac-7096f43fe363","event.duration":67215,"http.response.status_code":200,"ecs.version":"1.6.0"}
{"log.level":"error","@timestamp":"2025-11-03T04:29:02.099Z","log.logger":"beater","log.origin":{"file.name":"beater/waitready.go","file.line":64},"message":"precondition failed: EOF","service.name":"apm-server","ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2025-11-03T04:29:10.450Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":61},"message":"request ok","service.name":"apm-server","url.original":"/","http.request.method":"GET","user_agent.original":"kube-probe/1.31+","source.address":"10.27.18.23","http.request.body.bytes":0,"http.request.id":"55ef9299-114c-4771-80ab-f947986dee7a","event.duration":106407,"http.response.status_code":200,"ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2025-11-03T04:29:10.451Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":61},"message":"request ok","service.name":"apm-server","url.original":"/","http.request.method":"GET","user_agent.original":"kube-probe/1.31+","source.address":"10.27.18.23","http.request.body.bytes":0,"http.request.id":"db1a18ea-08d3-4810-a23a-cb4dad0bb99b","event.duration":76206,"http.response.status_code":200,"ecs.version":"1.6.0"}
{"log.level":"error","@timestamp":"2025-11-03T04:29:17.112Z","log.logger":"beater","log.origin":{"file.name":"beater/waitready.go","file.line":64},"message":"precondition failed: EOF","service.name":"apm-server","ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2025-11-03T04:29:20.450Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":61},"message":"request ok","service.name":"apm-server","url.original":"/","http.request.method":"GET","user_agent.original":"kube-probe/1.31+","source.address":"10.27.18.23","http.request.body.bytes":0,"http.request.id":"e53ec88b-c065-48bc-916b-76bef955e351","event.duration":105607,"http.response.status_code":200,"ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2025-11-03T04:29:20.451Z","log.logger":"request","log.origin":{"file.name":"middleware/log_middleware.go","file.line":61},"message":"request ok","service.name":"apm-server","url.original":"/","http.request.method":"GET","user_agent.original":"kube-probe/1.31+","source.address":"10.27.18.23","http.request.body.bytes":0,"http.request.id":"b3869a74-2093-4e8f-a4fb-438d327d47d3","event.duration":69179,"http.response.status_code":200,"ecs.version":"1.6.0"}