Graceful Shutdown #14022

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Apache Dubbo Component

Java SDK (apache/dubbo)

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2024-03-29 13:41:07.854 [DubboShutdownHook] INFO , o.a.dubbo.config.DubboShutdownHook - [DUBBO] Dubbo shutdown hooks execute now. Dubbo Application1.1, dubbo version: 3.2.9, current host: 10.10.1.33

2024-03-29 13:41:08.155 {"status":"UP","components":{"db":{"status":"UP","details":{"database":"PostgreSQL","validationQuery":"isValid()"}},"discoveryComposite":{"description":"Discovery Client not initialized","status":"UNKNOWN","components":{"discoveryClient":{"description":"Discovery Client not initialized","status":"UNKNOWN"}}},"diskSpace":{"status":"UP","details":{"total":250685575168,"free":15884992512,"threshold":10485760,"path":"","exists":true}},"dubbo":{"status":"UP","details":{"memory":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":"max:4096M,total:224M,used:188M,free:36M"}},"load":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":"load:2.67822265625,cpu:12"}},"registry":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":"10.0.2.251:8848(connected),10.0.2.251:8848(connected)"}},"spring":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":""}},"server":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":"/10.10.1.33:20880(clients:0)"}}}},"nacosConfig":{"status":"UP"},"ping":{"status":"UP"},"redis":{"status":"UP","details":{"version":"6.0.9"}},"refreshScope":{"status":"UP"}}}

2024-03-29 13:41:12.098 {"status":"UP","components":{"db":{"status":"UP","details":{"database":"PostgreSQL","validationQuery":"isValid()"}},"discoveryComposite":{"description":"Discovery Client not initialized","status":"UNKNOWN","components":{"discoveryClient":{"description":"Discovery Client not initialized","status":"UNKNOWN"}}},"diskSpace":{"status":"UP","details":{"total":250685575168,"free":15878217728,"threshold":10485760,"path":"","exists":true}},"dubbo":{"status":"UNKNOWN","details":{"memory":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":"max:4096M,total:238M,used:155M,free:83M"}},"load":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":"load:2.67822265625,cpu:12"}},"registry":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":"10.0.2.251:8848(connected),10.0.2.251:8848(connected)"}},"spring":{"source":"management.health.dubbo.status.defaults","status":{"level":"OK","message":""}},"server":{"source":"management.health.dubbo.status.defaults","status":{"level":"UNKNOWN"}}}},"nacosConfig":{"status":"UP"},"ping":{"status":"UP"},"redis":{"status":"UP","details":{"version":"6.0.9"}},"refreshScope":{"status":"UP"}}}

Dubbo has been taken offline, but the actuator health check information still shows Dubbo status as UP. It takes about 5 seconds for the server check item to change to UNKNOWN, yet the overall healthcheck remains UP. Using Nginx to request /actuator/health for determining whether to take the upstream offline is not feasible anymore. Since Dubbo has been taken offline, if the requested HTTP interface involves Dubbo-related logic, it throws an exception.

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