Flink on PaaSTA：Yelp运行在Kubernetes上的新流处理平台

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"本文最初发布于yelp工程博客，由InfoQ中文站翻译并分享。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在Yelp，我们每天使用"},{"type":"link","attrs":{"href":"https:\/\/flink.apache.org\/","title":"","type":null},"content":[{"type":"text","text":"Apache Flink"}]},{"type":"text","text":"处理TB级的流数据，为各种各样的应用提供支持：ETL管道、推送通知、机器人过滤、Session化等等。我们运行成百上千的Flink作业，因此，如果没有适当程度的自动化，像部署、重启和"},{"type":"link","attrs":{"href":"https:\/\/ci.apache.org\/projects\/flink\/flink-docs-release-1.11\/ops\/state\/savepoints.html","title":"","type":null},"content":[{"type":"text","text":"保存点"}]},{"type":"text","text":"这样的常规操作会花费开发人员数千小时的时间。最近，我们的工具室中增加了一个新的流处理平台，它基于Yelp的PaaS服务"},{"type":"link","attrs":{"href":"https:\/\/engineeringblog.yelp.com\/2015\/11\/introducing-paasta-an-open-platform-as-a-service.html","title":"","type":null},"content":[{"type":"text","text":"PaaSTA"}]},{"type":"text","text":"。其核心是一个"},{"type":"link","attrs":{"href":"https:\/\/kubernetes.io\/","title":"","type":null},"content":[{"type":"text","text":"Kubernetes"}]},{"type":"link","attrs":{"href":"https:\/\/kubernetes.io\/docs\/concepts\/extend-kubernetes\/operator\/","title":"","type":null},"content":[{"type":"text","text":"Operator"}]},{"type":"text","text":"，它自动监视我们的Flink集群的fleet部署和生命周期。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/resource\/image\/94\/1e\/94e5ab8a26535ffba733bf8fe61b441e.png","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":"center","origin":null},"content":[{"type":"text","marks":[{"type":"italic"}],"text":"Flink on PaaSTA on Kubernetes"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"引入Kubernetes之前"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在Yelp引入Kubernetes之前，Yelp的Flink工作负载运行在专用的AWS"},{"type":"link","attrs":{"href":"https:\/\/aws.amazon.com\/emr\/","title":"","type":null},"content":[{"type":"text","text":"ElasticMapReduce"}]},{"type":"text","text":"集群上，这些集群预装了Flink和"},{"type":"link","attrs":{"href":"https:\/\/hadoop.apache.org\/docs\/current\/hadoop-yarn\/hadoop-yarn-site\/YARN.html","title":"","type":null},"content":[{"type":"text","text":"YARN"}]},{"type":"text","text":"。为了实现EMR实例与Yelp生态系统其余部分的良好协同，我们之前的流处理平台Cascade在一个"},{"type":"link","attrs":{"href":"https:\/\/www.docker.com\/","title":"","type":null},"content":[{"type":"text","text":"Docker"}]},{"type":"text","text":"容器中运行大量的"},{"type":"link","attrs":{"href":"https:\/\/puppet.com\/docs\/pe\/2019.8\/peuser<\/i>guide.html","title":"","type":null},"content":[{"type":"text","text":"Puppet"}]},{"type":"text","text":"单体，以应用配置并启动一组常见的守护进程（在Yelp几乎所有的主机上运行）。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.geekbang.org\/resource\/image\/ec\/44\/ec553349f86e55448f70c38bd7553544.png","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":"center","origin":null},"content":[{"type":"text","marks":[{"type":"italic"}],"text":"Cascade的架构"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}}]}