{"id":3845,"date":"2019-02-24T14:12:58","date_gmt":"2019-02-24T06:12:58","guid":{"rendered":"http:\/\/switch.linesno.com\/?p=3845"},"modified":"2019-02-24T14:12:58","modified_gmt":"2019-02-24T06:12:58","slug":"springcloud%e5%be%ae%e6%9c%8d%e5%8a%a1%e8%bf%81%e7%a7%bb%e8%87%b3kubernetes%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"http:\/\/switch.linesno.com\/?p=3845","title":{"rendered":"SpringCloud\u5fae\u670d\u52a1\u8fc1\u79fb\u81f3Kubernetes\u5b9e\u8df5"},"content":{"rendered":"

\u524d\u8a00
\n\u539fSpringCloud\u57fa\u7840\u4e0a\u7684\u5fae\u670d\u52a1\u5df2\u7a33\u5b9a\u8fd0\u884c\u8fd11\u5e74\uff0c\u9057\u7559\u4e86\u4e00\u4e9b\u95ee\u9898\u4e0d\u592a\u597d\u5904\u7406\u3002\u539fSpringCloud\u7684\u6574\u7406\u6587\u7ae0\u89c1\u57fa\u4e8eSpringCloud\u5fae\u670d\u52a1\u7684\u670d\u52a1\u5e73\u53f0\u642d\u5efa\u7684\u4e00\u4e9b\u603b\u7ed3
\n\u95ee\u9898\u5982\u4e0b\uff1a<\/p>\n

\u5ba2\u6237\u7aef\u4fa7\u8d1f\u8f7d\u5747\u8861\u5728\u670d\u52a1\u5b9e\u4f8b\u6545\u969c\u4e0b\u7ebf\u65f6\u5019\uff0c\u4e0d\u80fd\u53ca\u65f6\u53d1\u73b0\uff0c\u5bfc\u81f4\u8bf7\u6c42\u5230\u6545\u969c\u5b9e\u4f8b\u5730\u5740\u9020\u6210\u8bf7\u6c42\u9519\u8bef\uff0c\u82e5\u589e\u52a0\u8bf7\u6c42\u91cd\u8bd5\u914d\u7f6e\uff0c\u5bf9\u4e8e\u975e\u5e42\u7b49\u63a5\u53e3\u5904\u7406\u56f0\u96be\u3002
\n\u57fa\u4e8eSpringCloud Config\u7684\u914d\u7f6e\u4e2d\u5fc3\u6709\u65f6\u5019\u4f1a\u6709\u4e0d\u53ca\u65f6\u5237\u65b0svn\u4e0a\u7684\u914d\u7f6e\u4fe1\u606f\u7684\u60c5\u51b5\uff08\u9700\u8981\u91cd\u65b0config\uff09\uff0c\u6ca1\u627e\u5230\u8fd9\u4e2a\u95ee\u9898\u7684\u539f\u56e0\u3002\u53e6\u5916\u591a\u73af\u5883\uff08\u751f\u4ea7\u3001\u6d4b\u8bd5\u73af\u5883\u72ec\u7acb\u7684\u914d\u7f6e\uff09\u3001\u591a\u7ea7\u914d\u7f6e\uff08\u672c\u5730\u3001\u914d\u7f6e\u4e2d\u5fc3\uff09\u7684\u7ec4\u5408\u8bbe\u7f6e\u5bf9\u4e8e\u7ec4\u5185\u5176\u4ed6\u5f00\u53d1\u8005\u800c\u8a00\uff0c\u5b66\u4e60\u6210\u672c\u8f83\u5927\uff0c\u7ecf\u5e38\u51fa\u73b0\u7528\u9519\u914d\u7f6e\u7684\u60c5\u51b5\u3002
\n\u82e5\u8981\u4f7f\u7528\u5fae\u670d\u52a1\uff0c\u5219\u5fc5\u987b\u4f7f\u7528SpringCloud\u6280\u672f\u6808\u5f00\u53d1\uff0c\u5bf9\u5f00\u53d1\u4eba\u5458\u7684\u6280\u672f\u9009\u578b\u662f\u4e00\u79cd\u4e0d\u5fc5\u8981\u7684\u7ea6\u675f\uff0c\u53e6\u5916\u5927\u91cf\u7684SpringCloud\u5e94\u7528\u5bf9\u4e0e\u673a\u5668\u5185\u5b58\u8d44\u6e90\u7684\u5360\u7528\u6bd4\u8f83\u4e25\u91cd\uff08\u4e00\u4e2a\u5e94\u7528\u52a8\u8f84\u4e0a\u767e\u5146\u5185\u5b58\uff09\uff0c\u62c6\u5206\u6210\u5927\u91cf\u5fae\u670d\u52a1\u540e\u5bf9\u4e8e\u673a\u5668\u5185\u5b58\u7684\u6d6a\u8d39\u5c24\u4e3a\u4e25\u91cd\u3002
\n\u867d\u7136SpringCloud\u6709Eureka\uff0c\u4f46\u662f\u7531\u4e8e\u5404\u4e2a\u670d\u52a1\u4e0d\u662f\u5728\u6240\u6709\u7269\u7406\u673a\u5668\u4e0a\u90fd\u8d77\u7740\u526f\u672c\uff0c\u5f53\u670d\u52a1\u5668\u6545\u969c\u9700\u8981\u6062\u590d\u65f6\uff0c\u4ecd\u7136\u9700\u8981\u7559\u610f\u5f53\u65f6\u673a\u5668\u4e0a\u8fd0\u884c\u7a0b\u5e8f\u7684\u60c5\u51b5\uff0c\u5e38\u5e38\u51fa\u73b0\u673a\u5668\u4e0a\u6b8b\u7559\u7684\u65e7\u7248\u672c\u5e94\u7528\u88ab\u5176\u4ed6\u4eba\u542f\u52a8\u8d77\u6765\u7684\u60c5\u51b5\u3002\u65e0\u6cd5\u505a\u5230\u4e0d\u5173\u5fc3\u5b9e\u4f8b\u7684\u5177\u4f53\u90e8\u7f72\u3002
\n\u670d\u52a1\u7684\u5347\u7ea7\u8f83\u4e3a\u9ebb\u70e6\uff0c\u5728\u7f3a\u4e4f\u6709\u6548\u7684\u81ea\u52a8\u5316\u90e8\u7f72\u7a0b\u5e8f\uff0c\u7f3a\u4e4f\u6709\u6548\u6eda\u52a8\u5347\u7ea7\u65b9\u6848\uff0c\u4ee5\u8fbe\u5230\u4e0d\u4e2d\u65ad\u670d\u52a1\u7684\u540c\u65f6\u9010\u4e2a\u66ff\u6362\u73b0\u6709\u670d\u52a1\u5b9e\u4f8b\u3002
\n\u6539\u9020\u65b9\u5f0f
\n\u90e8\u7f72Kubernetes\u96c6\u7fa4
\n\u7f51\u4e0a\u6559\u7a0b\u633a\u591a\u7684\uff0c\u8fd9\u91cc\u5c31\u4e0d\u8be6\u7ec6\u5199\u4e86\uff0c\u7528\u76841.11\u3002\u4f46\u662f\u9047\u5230\u8fc7\u95ee\u9898\u3002\u6211\u4eec\u96c6\u7fa4\u7528\u76843.10\u7684kernel\uff0c\u57281.11\u7684kubernetes\u4e2d\u7f51\u7edc\u9ed8\u8ba4\u7528\u7684ipvs\uff0c\u7ecf\u5e38\u5bfc\u81f4kernel panic\uff0c\u540e\u6765\u91cd\u65b0\u90e8\u7f72\u65f6\u5019\u628aipvs\u53bb\u6389\uff0c\u6362\u56de\u539f\u6765\u7684iptables\u5c31\u597d\u4e86\u3002<\/p>\n

SpringCloud\u5e94\u7528\u6539\u9020
\n\u9996\u5148\u8981\u53bb\u9664\u5bf9\u4e8eeureka\u7684maven\u4f9d\u8d56\u548cconfig\u7684\u4f9d\u8d56\uff0c\u5e76\u53bb\u9664@EnableEurekaClient\u7684\u6ce8\u89e3\u5373\u53ef\u3002<\/p>\n

\u5176\u6b21\u670d\u52a1\u8c03\u7528\u65b9\u9762\u7531\u4e8e\u6ca1\u6709Eureka\u4e86\uff0cFeignClient\u4e5f\u9700\u8981\u8fdb\u884c\u4e00\u4e9b\u53d8\u52a8\uff0c\u4f46\u662f\u53c8\u8981\u5c3d\u91cf\u7b80\u5316\u5f00\u53d1\u548c\u4fee\u6539\u6b65\u9aa4\uff0c\u5982\u679c\u8fd8\u5f97\u7531\u5f00\u53d1\u4eba\u5458\u8bb0\u4f4f\u6bcf\u4e2a\u670d\u52a1\u7684IP\u548c\u7aef\u53e3\u90a3\u5c31\u6709\u70b9\u9000\u5316\u7684\u5389\u5bb3\u4e86\u3002\u6211\u4eec\u505a\u5982\u4e0b\u8bbe\u7f6e\u3002<\/p>\n

1\uff09 \u5e94\u7528\u5728Kubernetes\u5185\u7684\u5c01\u88c5
\n\u2013 \u5173\u4e8e\u7aef\u53e3\uff1a\u6bcf\u4e00\u4e2a\u5fae\u670d\u52a1\u5728kubernetes\u5185\u90fd\u6709\u4e00\u4e2aDeployment\u8d1f\u8d23Pod\u7684\u90e8\u7f72\u3001\u7aef\u53e3\u66b4\u9732\uff08Expose\u51faSpring\u5e94\u7528\u7684server.port\u5373\u53ef\uff09
\n\u2013 \u5bf9\u670d\u52a1\u7684\u5c01\u88c5\uff1a\u6bcf\u4e2a\u5e94\u7528\u8fd8\u9700\u8981\u4e00\u4e2aService\u6765\u505a\u670d\u52a1\u5b9e\u4f8b\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u8fd9\u6837\u670d\u52a1\u4e4b\u95f4\u8c03\u7528\u5c31\u53ea\u8981\u627e\u670d\u52a1\u5bf9\u5e94\u7684Service\u5c31\u597d\u3002Service\u7684ip\u5730\u5740\u7531Kubernetes\u5185\u90e8DNS\u8d1f\u8d23\u89e3\u6790\u3002\u670d\u52a1\u5bf9\u5916\u7edf\u4e00\u752880\u7aef\u53e3\uff0c\u8fd9\u6837\u96c6\u7fa4\u5185\u90e8\u8bbf\u95ee\u65f6\u5019\u5c31\u53ea\u8981\u5199\u670d\u52a1\u540d\u79f0\u5373\u53ef\u3002\u540c\u65f6Service\u7684\u540d\u79f0\u548c\u5fae\u670d\u52a1\u7684\u5e94\u7528\u540d\u79f0\u4e00\u81f4\u3002<\/p>\n

2\uff09FeignClient\u7684\u6539\u9020
\n\u539fSpringCloud\u5185\u53ea\u8981\u6307\u5b9aserviceName\u5c31\u80fd\u901a\u8fc7Ribbon\u81ea\u884c\u8d1f\u8f7d\u5230\u5bf9\u5e94\u7684\u5b9e\u4f8b\u4e0a\uff0c\u73b0\u5728\u5219\u9700\u8981\u901a\u8fc7Kubernetes\u7684service\u5b9e\u73b0\u8c03\u7528\uff0c\u7531\u4e8e1\uff09\u5df2\u7ecf\u7ea6\u5b9a\u4e86Service\u540d\u79f0\u4e0e\u539f\u670d\u52a1\u540d\u79f0\u4e00\u81f4\uff0c\u540c\u65f6\u7aef\u53e3\u662f80\u3002\u56e0\u6b64\u53ea\u8981\u52a0\u4e0aurl\u5c31\u884c\u3002
\n\u5982\uff1a<\/p>\n

\/\/ \u8fd9\u91cc\u7684url\u662f\u65b0\u589e\u53c2\u6570
\n@FeignClient(name=”remote-service”, url=”remote-service”)
\npublic interface RemoteServiceApi {}
\n\u73af\u5883\u6539\u9020
\n1\uff09\u5c06\u6570\u636e\u5e93\u8fde\u63a5\u6539\u4e3aService\u548cEndpoint
\n\u8fd9\u6837\u5e94\u7528\u91cc\u7684\u6570\u636e\u5e93\u8fde\u63a5jdbc\u5c31\u4ece:<\/p>\n

jdbc:10.2.3.2:5433\/dbname
\n\u6539\u4e3a<\/p>\n

jdbc:pg-master\/dbname
\nService\u548cEndpoint\u7684\u914d\u7f6e\u65b9\u5f0f:<\/p>\n

apiVersion: v1
\nkind: Endpoints
\nmetadata:
\nname: pg-endpoint-loadbalancer
\nsubsets:
\n– addresses:
\n– ip: 10.2.xxx.xxx
\nports:
\n– port: 4432
\nprotocol: TCP
\n—
\napiVersion: v1
\nkind: Service
\nmetadata:
\nname: pg-endpoint-loadbalancer
\nspec:
\nports:
\n– port: 5432
\ntargetPort: 4432
\nprotocol: TCP<\/p>\n

\u7531\u6b64\u6539\u53d8\u7684\u597d\u5904\u5728\u4e8e\uff0c\u6570\u636e\u5e93\u5207\u6362\u65e0\u9700\u9010\u4e2a\u66f4\u6362\u5e94\u7528\u914d\u7f6e\u518d\u91cd\u542f\uff0c\u800c\u662f\u4ec5\u9700\u4fee\u6539\u96c6\u7fa4\u5185Endpoint\u8bbe\u7f6e\u5373\u53ef\u3002<\/p>\n

2\uff09\u90e8\u5206\u901a\u7528\u914d\u7f6e\u6539\u4e3aConfigMap
\n\u5c06\u901a\u7528\u914d\u7f6e\uff0c\u5982zipkin\u914d\u7f6e\u3001redis\u914d\u7f6e\u7b49\u5168\u5c40\u8303\u56f4\u5185\u5e94\u7528\u90fd\u4f1a\u7528\u5230\u7684\u53c2\u6570\u63d0\u53d6\u5230ConfigMap\u4e2d\uff0c\u5728\u901a\u8fc7EnvFrom\u7684\u65b9\u5f0f\u6302\u5728\u5728\u5e94\u7528\u7684\u955c\u50cf\u4e2d\u3002\u6b64\u65f6\u8dd1\u5728\u5bb9\u5668\u5185\u7684\u955c\u50cf\u5c31\u53ef\u4ee5\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u83b7\u53d6\u5230\u8fd9\u4e9b\u5168\u5c40\u7684\u8bbe\u7f6e\u3002
\n\u6bd4\u5982 bootstrap.properties:<\/p>\n

spring.rabbitmq.username=${rabbitmq_username}
\n\u73af\u5883\u53d8\u91cf\u6302\u8f7d\u65b9\u5f0f\uff1a<\/p>\n

env:
\n– name: rabbit_mq_host
\nvalueFrom:
\nconfigMapKeyRef:
\nname: cloud-env
\nkey: rabbit_mq_host
\n– name: rabbit_mq_address
\nvalueFrom:
\nconfigMapKeyRef:
\nname: cloud-env
\nkey: rabbit_mq_address
\n– name: redis_cluster
\nvalueFrom:
\nconfigMapKeyRef:
\nname: cloud-env
\nkey: redis_cluster<\/p>\n

\u65e5\u5fd7\u6539\u9020
\n\u539f\u5e94\u7528\u65e5\u5fd7\u7edf\u4e00\u5199\u5165${HOME}\/logs\/${application-name.log}\u91cc\u8fb9\uff0c\u518d\u6709logstash\u91c7\u96c6\u540e\u53d1\u9001\u5230elastic search\u3002\u73b0\u5728\u91c7\u7528\u5bb9\u5668\u65b9\u5f0f\u8fd0\u884c\u540e\u5219\u4e0d\u518d\u5c06\u65e5\u5fd7\u6587\u4ef6\u4e0e\u7269\u7406\u673a\u5668\u6302\u94a9\uff0c\u800c\u662f\u5728\u4e00\u4e2aPod\u5185\u518d\u542f\u52a8\u4e00\u4e2afilebeat\u65e5\u5fd7\u91c7\u96c6\u5bb9\u5668\uff0c\u4e24\u4e2a\u5bb9\u5668\u5171\u540c\u6302\u8f7d\u4e00\u4e2a\/log\/\u76ee\u5f55\u3002<\/p>\n

# \u90e8\u5206yaml
\ntemplate:
\nspec:
\nvolumes:
\n– name: app-logs
\nemptyDir: {}
\ncontainers:
\n– name: xxxx(application-image)
\n# ……
\nvolumeMounts:
\n– name: app-logs
\nmountPath: \/log
\n– name: filebeat-image
\n# ……
\nvolumeMounts:
\n– name: app-logs
\nmountPath: \/log
\n\u7ed3\u6784\u5982\u56fe\u6240\u793a\uff1a<\/p>\n

\u65e5\u5fd7\u91c7\u96c6\u7ed3\u6784\u6539\u53d8\u4e3a\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n

\u5e94\u7528\u90e8\u7f72\u65b9\u5f0f
\n\u8003\u8651\u5230\u51cf\u5c11\u5176\u4f59\u5f00\u53d1\u4eba\u5458\u7684\u65b0\u589e\u5b66\u4e60\u6210\u672c\u6211\u4eec\u5c06\u5e94\u7528\u7684\u6253\u5305\u53d1\u5e03\u6d41\u7a0b\u5c01\u88c5\u6210\u90e8\u7f72\u811a\u672c\uff0c\u63d0\u4f9b\u7ed9\u5f00\u53d1\u4eba\u5458\uff0c\u5f00\u53d1\u4eba\u5458\u4ec5\u9700\u51c6\u5907jar\u5305\u3001lib\u4f9d\u8d56\uff08\u53ef\u9009\uff09\u4ee5\u53ca\u914d\u7f6e\u6587\u4ef6\u5373\u53ef\u3002
\n\u901a\u8fc7\u7edf\u4e00\u7684\u6a21\u677f\u548c\u914d\u7f6e\u811a\u672c\u5c06\uff1a\u6253\u5305Docker image\u3001\u4e0a\u4f20\u79c1\u670d\u3001\u751f\u6210yaml\u6587\u4ef6\u7b49\u81ea\u52a8\u5b8c\u6210\u3002
\n\u4e3a\u81ea\u52a8\u5316\u90e8\u7f72\u548c\u5347\u7ea7\u9700\u8981\uff0cyaml\u4e2d\u9ed8\u8ba4\u91c7\u7528Alwayl\u7684Image\u62c9\u53bbimagePullPolicy: Always\uff0c\u540c\u65f6\u589e\u52a0rollout \u5347\u7ea7\u7684\u914d\u7f6e\u3002\u8fd9\u6837\u7814\u53d1\u4eba\u5458\u5728\u90e8\u7f72\u5e94\u7528\u65f6\u5c31\u80fd\u81ea\u52a8\u8fdb\u884c\u6eda\u52a8\u5347\u7ea7\uff0c\u5e76\u652f\u6301\u56de\u6eda\u5230\u65e7\u7248\u672c\u3002<\/p>\n

spec:
\nreplicas: REPLICAS
\nstrategy:
\nrollingUpdate:
\nmaxSurge: 1
\nmaxUnavailable: 1<\/p>\n

\u53d1\u5e03\u4e8e\u90e8\u7f72\u7684\u5173\u7cfb\u5982\u4e0b\u6240\u793a\uff1a
\n\u4e00\u952e\u53d1\u5e03\u811a\u672c\u4f1a\u81ea\u52a8\u5b8c\u6210\u6253\u5305docker image\u3001\u63a8\u9001\u79c1\u670d\u3001\u751f\u6210yaml\u6587\u4ef6\u4e09\u4ef6\u4e8b\u3002\u7814\u53d1\u4eba\u5458\u4ec5\u9700\u5e94\u7528\u751f\u6210\u7684yaml\u6587\u4ef6\u5373\u53ef\u5b8c\u6210\u90e8\u7f72\u4efb\u52a1\u3002<\/p>\n

\u96c6\u7fa4\u670d\u52a1\u5165\u53e3
\n\u539f\u670d\u52a1\uff1a \u4e92\u8054\u7f51 -> CDN -> \u9632\u706b\u5899 -> Nginx -> zuul\u7f51\u5173 -> \u5fae\u670d\u52a1
\n\u6539\u4e3a\uff1a \u4e92\u8054\u7f51 -> CDN -> \u9632\u706b\u5899 -> Nginx -> traefik Ingress -> zuul\u7f51\u5173 -> \u5fae\u670d\u52a1\u3002
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