Eureka设置服务上下线&Spring Cloud应用优雅上下线
< 返回列表时间: 2020-06-08来源:OSCHINA
Eureka设置服务上下线
被动下线(默认)
等待若干秒后,eureka server自动剔除失效的服务地址。(见Eureka配置优化)
直接执行http请求 shell命令执行(成功:200;失败:404,500) # 如果服务还存活着,那么在一定的时间内,服务会重新注册(非强制) curl -X DELETE "http://[ip]:[port]/eureka/apps/[your_app_name]/[your_instance_id]" -I # 强制上线/下线/移除服务(强制) curl -X PUT "http://192.168.1.248:8761/eureka/apps/CONFIG-SERVER/192.168.1.248:8088/status?value=UP" -I curl -X PUT "http://192.168.1.248:8761/eureka/apps/CONFIG-SERVER/192.168.1.248:8088/status?value=DOWN" -I curl -X PUT "http://192.168.1.248:8761/eureka/apps/CONFIG-SERVER/192.168.1.248:8088/status?value=OUT_OF_SERVICE" -I # 恢复以上强制操作为原始状态(解除强制覆盖:如果不加参数status的话,先初始化为UNKOWN状态,随即更新其真实状态) curl -X DELETE "http://192.168.1.248:8761/eureka/apps/CONFIG-SERVER/192.168.1.248:8088/status?value=[status(,or you can ignore this param)]" -I POSTMAN执行(具体功能同上)

Java程序执行(强制) @RestController public class OfflineController { @GetMapping("/offline") public String offline() { DiscoveryManager.getInstance().shutdownComponent(); return "offline OK"; } }
OR @RestController public class OfflineController { @Autowired private EurekaClient discoveryClient; @GetMapping("/offline2") public String offline2() { discoveryClient.shutdown(); discoveryClient = null; return "offline OK2"; } }
Python程序执行(非强制) pip install py_eureka_client #!/usr/bin/env python3 import eureka_client eureka_client.cancel('http://192.168.1.248:8761/eureka/', app_name, id)
参考: https://pypi.org/project/py-eureka-client/ https://github.com/Netflix/eureka/wiki/Eureka-REST-operations
通过Spring Boot Actuator控制服务上下线
参考: ENDPOINT: shutdown、pause、service-registry
Spring Cloud应用优雅上下线(集成发布系统) 从注册中心强制移除服务, curl -X PUT "http://192.168.1.248:8761/eureka/apps/CONFIG-SERVER/192.168.1.248:8088/status?value=OUT_OF_SERVICE" -I ; 等待若干时间之后(等待各个端和组件对服务列表的缓存过期),发布重启应用(先用kill -15 [pid],若干时间后再按需kill -9 [pid]); 从注册中心恢复服务,覆盖之前的强制状态(修改method即可), curl -X DELETE "http://192.168.1.248:8761/eureka/apps/CONFIG-SERVER/192.168.1.248:8088/status?value=OUT_OF_SERVICE" -I ,等待若干时间即可生效; 按照以上步骤1-3发布其他应用节点(灰度发布)
Eureka配置优化
https://docs.qq.com/doc/DTUJSUW9jUFFpZXp0?appid=101520907&od_appid=101520907&from=weiyun
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