{"id":36132,"date":"2023-10-07T15:54:28","date_gmt":"2023-02-16T05:05:39","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8kubernetes%e4%b8%ad%e4%bd%bf%e7%94%a8apache-flink%e7%9a%84%e6%96%b9%e6%b3%95%e3%80%82\/"},"modified":"2024-05-04T03:14:46","modified_gmt":"2024-05-03T19:14:46","slug":"%e5%9c%a8kubernetes%e4%b8%ad%e4%bd%bf%e7%94%a8apache-flink%e7%9a%84%e6%96%b9%e6%b3%95%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8kubernetes%e4%b8%ad%e4%bd%bf%e7%94%a8apache-flink%e7%9a%84%e6%96%b9%e6%b3%95%e3%80%82\/","title":{"rendered":"\u5728Kubernetes\u4e2d\u4f7f\u7528Apache Flink\u7684\u65b9\u6cd5"},"content":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecd\u4e86\u5bb9\u5668\u7ba1\u7406\u7cfb\u7edf\u7684\u53d1\u5c55\uff0c\u5e76\u89e3\u91ca\u4e86\u5728Kubernetes\u4e0a\u4f7f\u7528Apache Flink\u7684\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<p>\u963f\u91cc\u5df4\u5df4\u9ad8\u7ea7\u5f00\u53d1\u5de5\u7a0b\u5e08\u5510\u4e91\uff08\u67e5\u7518\uff09\u8457\uff0cFlink\u793e\u533a\u5fd7\u613f\u8005\u5f20\u58ee\u58ee\u7f16\u8457<\/p>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u662f\u7531\u963f\u91cc\u5df4\u5df4\u9ad8\u7ea7\u5f00\u53d1\u5de5\u7a0b\u5e08\u5510\u4e91\uff08Chagan\uff09\u57fa\u4e8eApache Flink\u7cfb\u5217\u7684\u5b9e\u65f6\u5e7f\u64ad\u8fdb\u884c\u7f16\u8f91\u7684\u3002\u8fd9\u7bc7\u6587\u7ae0\u7684\u4e3b\u8981\u8bdd\u9898\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b3\u30f3\u30c6\u30ca\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u306e\u9032\u5316<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Flink on Kubernetes\u306e\u7d39\u4ecb<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Flink on Kubernetes\u306e\u5b9f\u8df5<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">hostPath\u306e\u4f7f\u7528\u65b9\u6cd5\u306e\u30c7\u30e2<\/ul>\n<p>\u5728\u672c\u6587\u524d\u534a\u90e8\u5206\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u5bb9\u5668\u7ba1\u7406\u7cfb\u7edf\u7684\u6f14\u8fdb\u60c5\u51b5\u3002\u7b2c\u4e8c\u90e8\u5206\u5c06\u4ecb\u7ecdFlink\u5728Kubernetes\u4e0a\u7684\u90e8\u7f72\u6a21\u5f0f\u548c\u96c6\u7fa4\u8c03\u5ea6\u539f\u7406\u7b49\u5185\u5bb9\u3002\u7b2c\u4e09\u90e8\u5206\u5c06\u5206\u4eab\u6211\u4eec\u5728\u8fc7\u53bb\u4e00\u5e74\u4e2d\u4f7f\u7528Kubernetes\u4e0a\u7684Flink\u65f6\u9047\u5230\u7684\u95ee\u9898\u548c\u5b66\u5230\u7684\u7ecf\u9a8c\u7b49\u5b9e\u8df5\u7ecf\u9a8c\u3002\u6700\u540e\u4e00\u90e8\u5206\u5c06\u8fdb\u884c\u96c6\u7fa4\u90e8\u7f72\u548c\u4efb\u52a1\u53d1\u9001\u7684\u6f14\u793a\u3002<\/p>\n<h1>\u5bb9\u5668\u7ba1\u7406\u7cfb\u7edf\u7684\u8fdb\u5316<\/h1>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/6-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.05.22.png\" \/><\/div>\n<p>\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u4ece\u975e\u6838\u5fc3\u5f00\u53d1\u8005\u7684\u89d2\u5ea6\u6765\u63a2\u8ba8Kubernetes\u548cYARN\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u6b63\u5982\u5927\u5bb6\u6240\u77e5\uff0cApache Hadoop YARN\u53ef\u80fd\u662f\u4e2d\u56fd\u4f7f\u7528\u6700\u5e7f\u6cdb\u7684\u8c03\u5ea6\u7cfb\u7edf\u3002\u8fd9\u4e3b\u8981\u662f\u56e0\u4e3a\u5728\u4e2d\u56fd\u6216\u6574\u4e2a\u5927\u6570\u636e\u884c\u4e1a\u4e2d\uff0cHadoop HDFS\u662f\u6700\u5e38\u7528\u7684\u5b58\u50a8\u7cfb\u7edf\u3002\u56e0\u6b64\uff0cApache Hadoop YARN\u6210\u4e3a\u4e86\u81ea\u7136\u800c\u7136\u5e7f\u6cdb\u4f7f\u7528\u7684\u8c03\u5ea6\u7cfb\u7edf\uff0c\u5305\u62ec\u65e9\u671f\u7684Hadoop MapReduce\u3002\u968f\u7740YARN 2.0\u4e4b\u540e\u6846\u67b6\u7684\u5f00\u653e\uff0cSpark on YARN\u548cFlink on YARN\u4e5f\u53ef\u4ee5\u5728YARN\u4e0a\u8fdb\u884c\u8c03\u5ea6\u3002<\/p>\n<p>\u5f53\u7136\uff0cYARN\u672c\u8eab\u4e5f\u6709\u4e00\u4e9b\u9650\u5236\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u4f8b\u3048\u3070\u3001YARN\u306fJava\u3092\u30d9\u30fc\u30b9\u306b\u958b\u767a\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u307b\u3068\u3093\u3069\u306e\u30ea\u30bd\u30fc\u30b9\u306e\u5206\u96e2\u306b\u306f\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">YARN 3.0\u3067\u306f\u3001GPU\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3068\u7ba1\u7406\u3092\u3042\u308b\u7a0b\u5ea6\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u4ee5\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306eYARN\u306f\u3001GPU\u3092\u3042\u307e\u308a\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/ul>\n<p>\u9664\u4e86Apache\u8f6f\u4ef6\u57fa\u91d1\u4f1a\u5916\uff0c\u4e91\u539f\u751f\u8ba1\u7b97\u57fa\u91d1\u4f1a\uff08CNCF\uff09\u4e5f\u5728\u5f00\u53d1\u4ee5\u672c\u5730\u4e91\u8ba1\u7b97\u8c03\u5ea6\u4e3a\u57fa\u7840\u7684Kubernetes\u3002<\/p>\n<p>\u4f5c\u4e3a\u5f00\u53d1\u8005\uff0c\u6211\u8ba4\u4e3aKubernetes\u66f4\u63a5\u8fd1\u4e8e\u62e5\u6709\u8bb8\u591a\u529f\u80fd\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\u5f53\u7136\uff0c\u8fd9\u4e5f\u610f\u5473\u7740Kubernetes\u66f4\u590d\u6742\uff0c\u5b66\u4e60\u8d77\u6765\u66f4\u56f0\u96be\u3002\u9700\u8981\u7406\u89e3\u8bb8\u591a\u5b9a\u4e49\u548c\u6982\u5ff5\uff0c\u800cYARN\u4e3b\u8981\u7528\u4e8e\u8d44\u6e90\u8c03\u5ea6\uff0c\u5728\u6574\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u89c4\u6a21\u76f8\u5bf9\u8f83\u5c0f\u3002\u5f53\u7136\uff0c\u5b83\u4e5f\u662f\u5927\u6570\u636e\u751f\u6001\u7cfb\u7edf\u7684\u5148\u9a71\u8005\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u91cd\u70b9\u5173\u6ce8Kubernetes\uff0c\u5e76\u89e3\u91ca\u4eceYARN\u5bb9\u5668\u5230Kubernetes\u5bb9\u5668\uff08\u6216Pod\uff09\u7684\u6f14\u53d8\u8fc7\u7a0b\u4e2d\u83b7\u5f97\u7684\u7ecf\u9a8c\u548c\u6559\u8bad\u3002<\/p>\n<h1>\u5728Kubernetes\u4e0a\u4ecb\u7ecdFlink\u3002<\/h1>\n<h3>\u90e8\u7f72\u96c6\u7fa4<\/h3>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/14-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.05.49.png\" \/><\/div>\n<p>\u8fd9\u4e2a\u56fe\u5c55\u793a\u4e86\u5728Kubernetes\u4e0aFlink\u7684\u72ec\u7acb\u4f1a\u8bdd\u96c6\u7fa4\u7684\u8c03\u5ea6\u6d41\u7a0b\u3002\u84dd\u8272\u865a\u7ebf\u6846\u8868\u793a\u5728Kubernetes\u96c6\u7fa4\u5185\u8fd0\u884c\u7684\u7ec4\u4ef6\uff0c\u7070\u8272\u6846\u8868\u793a\u7531kubectl\u6216Kubernetes Master\u7b49Kubernetes\u539f\u751f\u63d0\u4f9b\u7684\u547d\u4ee4\u548c\u7ec4\u4ef6\u3002\u5728\u5de6\u4fa7\uff0c\u5217\u51fa\u4e86Flink\u5b98\u65b9\u6587\u6863\u63d0\u4f9b\u7684\u4e94\u4e2ayaml\u6587\u4ef6\u3002\u4f7f\u7528\u8fd9\u4e9b\u6587\u4ef6\uff0c\u53ef\u4ee5\u5728Kubernetes\u4e0a\u90e8\u7f72\u6700\u7b80\u5355\u7684Flink\u72ec\u7acb\u4f1a\u8bdd\u96c6\u7fa4\u3002<\/p>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u7684kubectl\u547d\u4ee4\u6765\u542f\u52a8\u96c6\u7fa4\u3002<\/p>\n<pre class=\"post-pre\"><code>kubectl create -f flink-configuration-configmap.yaml\r\nkubectl create -f jobmanager-service.yaml\r\nkubectl create -f jobmanager-deployment.yaml\r\nkubectl create -f taskmanager-deployment.yaml\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u6700\u521d\u306e\u30b3\u30de\u30f3\u30c9\u306f\u3001Flink ConfigMap\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306eKubernetes Master\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002ConfigMap\u306fflink-conf.yaml\u3084log4j.properties\u306a\u3069\u3001Flink\u30af\u30e9\u30b9\u30bf\u30fc\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u8a2d\u5b9a\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">2\u756a\u76ee\u306e\u30b3\u30de\u30f3\u30c9\u3067\u306f\u3001TaskManager\u3092JobManager\u306b\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306eFlink JobManager\u30b5\u30fc\u30d3\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">3\u3064\u76ee\u306e\u30b3\u30de\u30f3\u30c9\u306f\u3001JobMaster\u3092\u8d77\u52d5\u3059\u308b\u305f\u3081\u306eFlink JobManager Deployment\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u3053\u306e\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306b\u306f\u3001Dispatcher\u3068Resource manager\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u6700\u5f8c\u306e\u30b3\u30de\u30f3\u30c9\u3067\u306f\u3001TaskManager\u3092\u8d77\u52d5\u3059\u308b\u305f\u3081\u306bFlink TaskManager Deployment\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u516c\u5f0f\u306eFlink taskmanager-deployment.yaml\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u306f2\u3064\u306e\u30ec\u30d7\u30ea\u30ab\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u56f3\u306b\u306f2\u3064\u306eTaskManager\u30ce\u30fc\u30c9\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/ul>\n<p>\u8fd8\u53ef\u4ee5\u521b\u5efaJobManager REST\u670d\u52a1\uff0c\u901a\u8fc7REST\u670d\u52a1\u63d0\u4ea4\u4f5c\u4e1a\u3002<\/p>\n<p>\u4e0a\u8ff0\u7684\u56fe\u8868\u5c55\u793a\u4e86Flink\u72ec\u7acb\u4f1a\u8bdd\u96c6\u7fa4\u7684\u6982\u5ff5\u3002<\/p>\n<h3>\u63d0\u4ea4\u5de5\u4f5c<\/h3>\n<p>\u4e0b\u56fe\u5c55\u793a\u4e86\u4f7f\u7528Flink\u5ba2\u6237\u7aef\u5411\u72ec\u7acb\u4f1a\u8bdd\u96c6\u7fa4\u53d1\u9001\u4f5c\u4e1a\u7684\u8fc7\u7a0b\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/23-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.07.33.png\" \/><\/div>\n<p>\u5728Flink\u5ba2\u6237\u7aef\u4e0a\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff0c\u53d1\u9001\u4f5c\u4e1a\u3002<\/p>\n<pre class=\"post-pre\"><code>.\/bin\/flink run -m : .\/examples\/streaming\/WordCount.jar\r\n<\/code><\/pre>\n<p>m\u3067\u5fc5\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bfpublic-node-IP\u3068node-port\u306f\u3001jobmanager-service.yaml\u3092\u901a\u3058\u3066\u516c\u958b\u3055\u308c\u308bREST\u30b5\u30fc\u30d3\u30b9\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068\u30dd\u30fc\u30c8\u3067\u3059\u3002\u3053\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001Streaming WordCount\u30b8\u30e7\u30d6\u3092\u30af\u30e9\u30b9\u30bf\u30fc\u306b\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001Flink Standalone Session\u30af\u30e9\u30b9\u30bf\u30fc\u304c\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u74b0\u5883\u306b\u4f9d\u5b58\u3057\u307e\u305b\u3093\u3002\u30af\u30e9\u30b9\u30bf\u304cKubernetes\u4e0a\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b\u304b\u3001\u7269\u7406\u30de\u30b7\u30f3\u4e0a\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b\u304b\u306b\u95a2\u308f\u3089\u305a\u3001\u30b8\u30e7\u30d6\u306e\u9001\u4fe1\u30d7\u30ed\u30bb\u30b9\u306f\u540c\u3058\u3067\u3059\u3002<\/p>\n<p>\u901a\u8fc7jobmanager-service.yaml\u516c\u5f00\u7684REST\u670d\u52a1\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u662fm\u4e2d\u6240\u9700\u8981\u7684\u53c2\u6570public-node-IP\u548cnode-port\u3002\u6267\u884c\u6b64\u547d\u4ee4\u53ef\u4ee5\u5c06Streaming WordCount\u4f5c\u4e1a\u53d1\u9001\u5230\u96c6\u7fa4\u4e2d\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4e0d\u4f9d\u8d56\u4e8eFlink Standalone Session\u96c6\u7fa4\u6b63\u5728\u8fd0\u884c\u7684\u73af\u5883\u3002\u65e0\u8bba\u96c6\u7fa4\u662f\u5728Kubernetes\u4e0a\u8fd0\u884c\u8fd8\u662f\u5728\u7269\u7406\u673a\u4e0a\u8fd0\u884c\uff0c\u4f5c\u4e1a\u53d1\u9001\u7684\u8fc7\u7a0b\u90fd\u662f\u76f8\u540c\u7684\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u5728Kubernetes\u4e0a\u4f7f\u7528Standalone Session\u7684\u4f18\u7f3a\u70b9\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30e1\u30ea\u30c3\u30c8\uff1a \u30af\u30e9\u30b9\u30bf\u30fc\u3092\u8d77\u52d5\u3059\u308b\u524d\u306b\u3044\u304f\u3064\u304b\u306eyaml\u30d5\u30a1\u30a4\u30eb\u3092\u5b9a\u7fa9\u3059\u308b\u3060\u3051\u3067\u3088\u304f\u3001Flink\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u30af\u30e9\u30b9\u30bf\u9593\u306e\u901a\u4fe1\u306fKubernetes Master\u306b\u4f9d\u5b58\u3057\u307e\u305b\u3093\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30c7\u30e1\u30ea\u30c3\u30c8\uff1a \u30ea\u30bd\u30fc\u30b9\u3092\u4e8b\u524d\u306b\u8981\u6c42\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u52d5\u7684\u306b\u8abf\u6574\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001Flink on YARN\u3067\u306f\u3001\u30b8\u30e7\u30d6\u306e\u9001\u4fe1\u6642\u306b\u3001\u30af\u30e9\u30b9\u30bf\u30fc\u304c\u5fc5\u8981\u3068\u3059\u308bJM\u3084TM\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u5ba3\u8a00\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/ul>\n<p>\u5728Flink 1.10\u7684\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u963f\u91cc\u5df4\u5df4\u7684\u5de5\u7a0b\u5e08\u8d1f\u8d23\u8c03\u5ea6\uff0c\u5728Kubernetes\u4e0a\u4e3aFlink\u7684\u539f\u751f\u8ba1\u7b97\u6a21\u5f0f\u505a\u51fa\u4e86\u8d21\u732e\u3002\u8fd9\u4e5f\u662f\u57fa\u4e8e\u8fc7\u53bb\u4e00\u5e74\u7684\u5b9e\u8df5\u603b\u7ed3\u800c\u6210\u7684\u539f\u751fKubernetes\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/30-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.10.47.png\" \/><\/div>\n<p>\u6700\u663e\u8457\u7684\u533a\u522b\u662f\uff0c\u901a\u8fc7Flink\u5ba2\u6237\u7aef\u53d1\u9001\u4f5c\u4e1a\u65f6\uff0c\u6574\u4e2a\u96c6\u7fa4\u7684JobMaster\u4f1a\u901a\u8fc7Kubernetes ResourceManager\u52a8\u6001\u7533\u8bf7\u8d44\u6e90\u5230Kubernetes Master\uff0c\u5e76\u521b\u5efa\u6267\u884cTaskManager\u7684pod\u3002\u7136\u540e\uff0cTaskManager\u548cJobMaster\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u3002\u6709\u5173\u539f\u751fKubernetes\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u8003\u738b\u9633\u5148\u751f\u5206\u4eab\u7684&#8221;\u5728Kubernetes\u539f\u751f\u73af\u5883\u4e2d\u8fd0\u884cFlink&#8221;\u3002<\/p>\n<p>\u603b\u7684\u6765\u8bf4\uff0c\u8fd9\u662f\u6307\u5c06Kubernetes\u4e0eYARN\u4e00\u6837\u4f7f\u7528\uff0c\u5e76\u5c3d\u53ef\u80fd\u5730\u4f7f\u76f8\u5173\u914d\u7f6e\u9879\u76ee\u4e0eYARN\u76f8\u540c\u3002\u4e3a\u4e86\u7b80\u5316\u8bf4\u660e\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Standalone Session\u96c6\u7fa4\u8fdb\u884c\u8bf4\u660e\u3002\u5728\u4e0b\u9762\u7684\u90e8\u5206\u4e2d\uff0c\u6211\u4eec\u5c06\u8bf4\u660e\u4e00\u4e9b\u529f\u80fd\uff0c\u5176\u4e2d\u4e00\u4e9b\u529f\u80fd\u5728Flink 1.10\u4e2d\u5c1a\u672a\u5b9e\u73b0\uff0c\u800c\u9884\u8ba1\u5c06\u5728Flink 1.11\u4e2d\u5b9e\u73b0\u3002<\/p>\n<h1>Kubernetes\u4e0a\u7684Flink\u5b9e\u8df5<\/h1>\n<h3>\u65e5\u5fd7\u6536\u96c6<\/h3>\n<p>\u5728\u4f7f\u7528Kubernetes\u4e0a\u6267\u884cFlink\u4f5c\u4e1a\u65f6\uff0c\u65e0\u6cd5\u907f\u514d\u529f\u80fd\u6027\u95ee\u9898\u6240\u5e26\u6765\u7684\u65e5\u5fd7\u8bb0\u5f55\u3002\u5728YARN\u4e0a\u6267\u884c\u8be5\u4f5c\u4e1a\u65f6\uff0cYARN\u4f1a\u81ea\u52a8\u5904\u7406\u8fd9\u4e9b\u65e5\u5fd7\u3002\u4f8b\u5982\uff0c\u5f53\u5bb9\u5668\u6267\u884c\u5b8c\u6210\u540e\uff0cYARN\u4f1a\u6536\u96c6\u65e5\u5fd7\u5e76\u4e0a\u4f20\u5230HDFS\uff0c\u4ee5\u4fbf\u7a0d\u540e\u67e5\u770b\u3002\u7136\u800c\uff0c\u5728Kubernetes\u4e2d\uff0c\u65e5\u5fd7\u7684\u6536\u96c6\u548c\u4fdd\u5b58\u90fd\u9700\u8981\u624b\u52a8\u8fdb\u884c\u3002\u6709\u8bb8\u591a\u65b9\u6cd5\u53ef\u4ee5\u6536\u96c6\u548c\u663e\u793a\u65e5\u5fd7\u3002\u7531\u4e8e\u65e5\u5fd7\u4f1a\u56e0\u4f5c\u4e1a\u5f02\u5e38\u800c\u5bfc\u81f4Pod\u7ec8\u6b62\u800c\u4e22\u5931\uff0c\u6240\u4ee5\u6545\u969c\u6392\u9664\u53d8\u5f97\u975e\u5e38\u56f0\u96be\u3002<\/p>\n<p>\u5982\u679c\u5728YARN\u4e0a\u6267\u884c\u6b64\u4f5c\u4e1a\uff0c\u5219\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u547d\u4ee4\u201cyarn logs -applicationId\u201d\u6765\u663e\u793a\u76f8\u5173\u65e5\u5fd7\u3002\u7136\u800c\uff0c\u5982\u679c\u5728Kubernetes\u4e0a\u6267\u884c\u6b64\u4f5c\u4e1a\u5462\uff1f<\/p>\n<p>\u76ee\u524d\uff0c\u4f7f\u7528fluentd\u6765\u6536\u96c6\u65e5\u5fd7\u662f\u5e38\u89c1\u7684\u505a\u6cd5\uff0c\u4e5f\u88ab\u4e00\u4e9b\u7528\u6237\u5728\u4ed6\u4eec\u7684\u751f\u4ea7\u73af\u5883\u4e2d\u4f7f\u7528\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/38-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.11.29.png\" \/><\/div>\n<p>Fluentd\u4e5f\u662fCNCF\u9879\u76ee\u4e4b\u4e00\u3002\u901a\u8fc7\u8bbe\u7f6e\u4e00\u4e9b\u89c4\u5219\uff0c\u5982\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\uff0c\u53ef\u4ee5\u5b9a\u671f\u5c06.log\u3001.out\u3001*.gc\u7b49\u65e5\u5fd7\u4e0a\u4f20\u5230\u5206\u5e03\u5f0f\u5b58\u50a8\u6587\u4ef6\u7cfb\u7edf\uff08\u5982HDFS\uff09\uff0c\u5b9e\u73b0\u65e5\u5fd7\u6536\u96c6\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u9664\u4e86TM\u548cJM\u5916\uff0c\u8fd8\u9700\u8981\u5728Pod\u4e2d\u542f\u52a8\u8fd0\u884cFluentd\u8fdb\u7a0b\u7684\u53e6\u4e00\u4e2a\u5bb9\u5668\uff08\u5373\u8fb9\u8f66\u5bb9\u5668\uff09\u3002<\/p>\n<p>\u8fd8\u6709\u5176\u4ed6\u7684\u65b9\u6cd5\u53ef\u4f9b\u9009\u62e9\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528logback-elasticsearch-appender\uff0c\u5728\u4e0d\u6dfb\u52a0\u5bb9\u5668\u7684\u60c5\u51b5\u4e0b\u5c06\u65e5\u5fd7\u53d1\u9001\u5230Elasticsearch\u3002\u5b9e\u73b0\u7684\u539f\u5219\u662f\u4f7f\u7528Elasticsearch REST API\u652f\u6301\u7684socket\u6d41\u6765\u76f4\u63a5\u5c06\u65e5\u5fd7\u5199\u5165Elasticsearch\u3002<\/p>\n<p>\u4e0eFluentd\u76f8\u6bd4\uff0c\u4e0d\u9700\u8981\u6dfb\u52a0\u5176\u4ed6\u5bb9\u5668\u6765\u6536\u96c6\u65e5\u5fd7\u3002\u4f46\u662f\uff0c\u9664\u4e86log4j\u4e4b\u5916\u7684\u65e5\u5fd7\uff08\u4f8b\u5982System.out\u548cSystem.err\u7684\u65e5\u5fd7\uff09\u65e0\u6cd5\u6536\u96c6\u3002\u7279\u522b\u662f\u5728\u4f5c\u4e1a\u5185\u53d1\u751f\u6838\u5fc3\u8f6c\u50a8\u6216\u5d29\u6e83\u8f6c\u50a8\u7684\u60c5\u51b5\u4e0b\uff0c\u76f8\u5173\u65e5\u5fd7\u5c06\u76f4\u63a5\u5199\u5165System.out\u6216System.err\u3002\u4ece\u8fd9\u4e2a\u89d2\u5ea6\u6765\u770b\uff0c\u4f7f\u7528logback-elasticsearch-appender\u5c06\u65e5\u5fd7\u5199\u5165Elasticsearch\u5e76\u4e0d\u662f\u5b8c\u7f8e\u7684\u89e3\u51b3\u65b9\u6848\u3002\u4e0e\u6b64\u76f8\u53cd\uff0c\u901a\u8fc7\u8bbe\u7f6e\u5404\u79cd\u7b56\u7565\uff0c\u53ef\u4ee5\u4f7f\u7528Fluentd\u6765\u6536\u96c6\u6240\u9700\u7684\u65e5\u5fd7\u3002<\/p>\n<h3>\u5ea6\u91cf\u8861<\/h3>\n<p>\u65e5\u5fd7\u7279\u522b\u5728\u51fa\u73b0\u95ee\u9898\u65f6\uff0c\u6709\u52a9\u4e8e\u89c2\u5bdf\u4f5c\u4e1a\u7684\u6267\u884c\u72b6\u6001\u3002\u5b83\u53ef\u7528\u4e8e\u8ffd\u6eaf\u53d1\u751f\u7684\u573a\u666f\uff0c\u8fdb\u884c\u6545\u969c\u6392\u9664\u548c\u5206\u6790\u3002\u6307\u6807\u548c\u76d1\u63a7\u662f\u5e38\u89c1\u4e14\u91cd\u8981\u7684\u95ee\u9898\u3002\u5728\u8be5\u884c\u4e1a\u4e2d\uff0c\u6709\u8bb8\u591a\u76d1\u63a7\u7cfb\u7edf\u89e3\u51b3\u65b9\u6848\uff0c\u4f8b\u5982\u5728\u963f\u91cc\u5df4\u5df4\u5e7f\u6cdb\u4f7f\u7528\u7684Druid\u3001\u5f00\u6e90\u7684InfluxDB\u3001\u5546\u4e1a\u96c6\u7fa4\u7248\u7684InfluxDB\u3001CNCF\u7684Prometheus\u548cUber\u7684\u5f00\u6e90M3\u3002<\/p>\n<p>\u7136\u540e\uff0c\u8ba9\u6211\u4eec\u4ee5Prometheus\u4e3a\u4f8b\u3002Prometheus\u548cKubernetes\u90fd\u662fCNCF\u9879\u76ee\uff0c\u5b83\u4eec\u5728\u6307\u6807\u6536\u96c6\u9886\u57df\u90fd\u6709\u72ec\u7279\u7684\u4f18\u52bf\u3002\u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\uff0cPrometheus\u662fKubernetes\u4e2d\u7684\u6807\u51c6\u76d1\u63a7\u548c\u6536\u96c6\u7cfb\u7edf\u3002Prometheus\u4e0d\u4ec5\u53ef\u4ee5\u76d1\u89c6\u8b66\u62a5\uff0c\u8fd8\u53ef\u4ee5\u5b9a\u671f\u6267\u884c\u57fa\u4e8e\u8bbe\u5b9a\u89c4\u5219\u7684\u591a\u7cbe\u5ea6\u7ba1\u7406\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/45-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.12.09.png\" \/><\/div>\n<p>\u7136\u800c\uff0c\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u53d1\u73b0 Prometheus \u5e76\u6ca1\u6709\u88ab\u8bbe\u8ba1\u6210\u80fd\u591f\u5f88\u597d\u5730\u5728\u6c34\u5e73\u65b9\u5411\u4e0a\u6269\u5c55\u3002\u6b63\u5982\u524d\u9762\u6240\u793a\u7684\u56fe\u8868\u53f3\u4fa7\u6240\u793a\uff0cPrometheus \u7684\u8054\u90a6\u5206\u5e03\u5f0f\u67b6\u6784\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u591a\u5c42\u7ed3\u6784\u3002\u4e0a\u5c42\u8282\u70b9\u8d1f\u8d23\u8def\u7531\u548c\u8f6c\u53d1\uff0c\u5e76\u67e5\u8be2\u4e0b\u5c42\u7684\u7ed3\u679c\u3002\u5f53\u7136\uff0c\u65e0\u8bba\u6211\u4eec\u653e\u7f6e\u591a\u5c11\u5c42\uff0c\u4e0a\u5c42\u8282\u70b9\u90fd\u5bb9\u6613\u6210\u4e3a\u6027\u80fd\u74f6\u9888\uff0c\u5e76\u4e14\u5f88\u96be\u914d\u7f6e\u6574\u4e2a\u96c6\u7fa4\u3002\u5982\u679c\u7528\u6237\u89c4\u6a21\u4e0d\u5927\uff0c\u90a3\u4e48\u4e00\u4e2a Prometheus \u53ef\u4ee5\u6ee1\u8db3\u76d1\u63a7\u8981\u6c42\u3002\u7136\u800c\uff0c\u5982\u679c\u7528\u6237\u89c4\u6a21\u589e\u5927\uff0c\u4f8b\u5982\u5728\u7531\u6570\u767e\u4e2a\u8282\u70b9\u6784\u6210\u7684 Flink \u96c6\u7fa4\u4e2d\uff0c\u4e00\u4e2a Prometheus \u5c06\u6210\u4e3a\u6027\u80fd\u7684\u4e3b\u8981\u74f6\u9888\uff0c\u65e0\u6cd5\u6ee1\u8db3\u76d1\u63a7\u8981\u6c42\u3002<\/p>\n<p>\u8981\u5982\u4f55\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5462\uff1f<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/48-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.12.37.png\" \/><\/div>\n<p>\u6211\u4eec\u6b63\u5728\u5b9e\u65bd\u5bf9\u4e0d\u540cFlink\u4f5c\u4e1a\u7684\u6307\u6807\u8fdb\u884c\u4e00\u81f4\u54c8\u5e0c\u3002\u5f53\u7136\uff0c\u5e76\u4e0d\u662f\u5c06\u4e00\u4e2a\u4f5c\u4e1a\u7684\u6307\u6807\u53d1\u9001\u5230\u4e00\u4e2aPrometheus\u5b9e\u4f8b\u3002\u76f8\u53cd\uff0c\u6211\u4eec\u5c06\u4f5c\u4e1a\u4e0d\u540c\u8303\u56f4\u7684\u6307\u6807\u53d1\u9001\u5230\u591a\u4e2aPrometheus\u5b9e\u4f8b\u3002Flink\u7684\u6307\u6807\u5f3a\u5ea6\u6709\u5927\u5c0f\u4e4b\u5206\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">JobManager\/TaskManager \u30e1\u30c8\u30ea\u30af\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b8\u30e7\u30d6\u30fb\u30e1\u30c8\u30ea\u30af\u30b9\uff08\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u6570\u3001\u30b5\u30a4\u30ba\u3001\u5931\u6557\u56de\u6570\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30bf\u30b9\u30af\u30fb\u30e1\u30c8\u30ea\u30af\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30aa\u30da\u30ec\u30fc\u30bf\u30fc\u30fb\u30e1\u30c8\u30ea\u30af\u30b9\uff081\u79d2\u9593\u306b\u51e6\u7406\u3055\u308c\u308b\u30ec\u30b3\u30fc\u30c9\u6570\u3001\u53d7\u4fe1\u30d0\u30a4\u30c8\u6570\uff09\u3002<\/ul>\n<p>\u73b0\u5728\uff0c\u6839\u636e\u4f5c\u7528\u57df\u5b9e\u65bd\u5177\u6709\u4e00\u81f4\u54c8\u5e0c\u7684\u6307\u6807\uff0c\u5c06\u54c8\u5e0c\u7ed3\u679c\u53d1\u9001\u5230\u4e0d\u540c\u7684Prometheus\u5b9e\u4f8b\uff0c\u5e76\u6700\u540e\u4e0eThanos\u8fdb\u884c\u534f\u4f5c\u3002Thanos\u662f\u300a\u590d\u4ec7\u8005\u8054\u76df3\u300b\u4e2d\u7684\u53cd\u6d3e\u89d2\u8272\u7684\u540d\u5b57\u3002\u5728\u6211\u770b\u6765\uff0cThanos\u662f\u4e00\u4e2a\u6269\u5c55\u7ec4\u4ef6\uff0c\u652f\u6301Prometheus\u6307\u6807\u7684\u5206\u5e03\u5f0f\u67e5\u8be2\u3002\u56e0\u6b64\uff0c\u5728Prometheus\u67b6\u6784\u4e2d\uff0c\u53ef\u4ee5\u5c06Thanos\u7684\u8fb9\u8f66\u88c5\u914d\u5728\u5bb9\u5668\u4e2d\uff0c\u8fd9\u4e9b\u5bb9\u5668\u914d\u5907\u4e86\u5355\u4e2aPrometheus\u5b9e\u4f8b\u3002<\/p>\n<p>\u6574\u4e2a\u67b6\u6784\u6709\u4e00\u4e9b\u9650\u5236\uff0c\u5e76\u4e14\u9700\u8981\u521b\u5efa\u4e00\u81f4\u7684\u54c8\u5e0c\u3002\u5f53\u5c06Thanos\u4e0ePrometheus\u4e00\u8d77\u90e8\u7f72\u65f6\uff0c\u67d0\u4e9b\u6307\u6807\u6570\u636e\u56e0\u67d0\u79cd\u539f\u56e0\u5b58\u5728\u4e8ePrometheus A\u548cPrometheus B\u4e2d\u3002\u56e0\u6b64\uff0cThanos\u67e5\u8be2\u6709\u4e00\u5b9a\u7684\u89c4\u5219\u6765\u4e22\u5f03\u6570\u636e\uff0c\u5373\u5220\u9664\u4e00\u65b9\u5219\u53e6\u4e00\u65b9\u7684\u6570\u636e\u5c06\u4f18\u5148\u3002\u7ed3\u679c\uff0cUI\u4e0a\u7684\u6307\u6807\u56fe\u8868\u7ebf\u6761\u4f1a\u51fa\u73b0\u95f4\u65ad\uff0c\u5f15\u53d1\u4e0d\u53cb\u597d\u7684\u4f53\u9a8c\u3002\u56e0\u6b64\uff0c\u9700\u8981\u5b9e\u65bdThanos\u7684\u4e00\u81f4\u54c8\u5e0c\u548c\u5206\u5e03\u5f0f\u67e5\u8be2\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5728\u6574\u4e2a\u89e3\u51b3\u65b9\u6848\u7684\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u4e00\u4e9b\u6027\u80fd\u95ee\u9898\u3002\u5c3d\u7ba1Prometheus\u5728\u8bb8\u591a\u670d\u52a1\u7ea7\u522b\u6307\u6807\u4e0a\u663e\u793a\u51fa\u826f\u597d\u7684\u6027\u80fd\uff0c\u4f46\u4e3a\u4ec0\u4e48\u5728Flink\u548c\u4f5c\u4e1a\u7ea7\u522b\u4e0a\u6027\u80fd\u8868\u73b0\u4e0d\u4f73\u5462\uff1f\u8fd9\u662f\u56e0\u4e3a\u4f5c\u4e1a\u6307\u6807\u7684\u5267\u70c8\u53d8\u5316\u3002\u4e0eHDFS\u548cHbase\u7684\u76d1\u63a7\u76f8\u6bd4\uff0c\u8fd9\u4e9b\u7ec4\u4ef6\u7684\u6307\u6807\u53d7\u9650\u4e14\u7ef4\u5ea6\u8f83\u4f4e\u3002\u4e3a\u4e86\u89e3\u91ca\u7ef4\u5ea6\u7684\u6982\u5ff5\uff0c\u8ba9\u6211\u4eec\u8bd5\u7740\u4f7f\u7528\u67e5\u8be2\u573a\u666f\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u9700\u8981\u67e5\u8be2\u5173\u4e8e\u4e3b\u673a\u5185\u4f5c\u4e1a\u7684\u6240\u6709taskmanager_job_task_buffers_outPoolUsage\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u6211\u4eec\u9700\u8981\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528\u6807\u7b7e\u6765\u8fdb\u884c\u8fc7\u6ee4\u3002\u7136\u540e\uff0c\u6211\u4eec\u53d1\u73b0Flink\u7684taskAttempId\u662f\u4e00\u4e2a\u4e0d\u53cb\u597d\u7684\u6807\u7b7e\u3002\u5b83\u662f\u4e00\u4e2aUUID\uff0c\u6bcf\u5f53\u4f5c\u4e1a\u5931\u8d25\u65f6\u90fd\u4f1a\u66f4\u6539\u3002<\/p>\n<p>\u5982\u679c\u4f5c\u4e1a\u6301\u7eed\u5931\u8d25\u5e76\u5c06\u65b0\u6807\u7b7e\u6301\u4e45\u5316\u5230Prometheus\uff0c\u5e76\u4e14\u8fde\u63a5\u5230Prometheus\u7684\u6570\u636e\u5e93\u9700\u8981\u521b\u5efa\u6807\u7b7e\u7d22\u5f15\uff0c\u90a3\u4e48\u5c31\u9700\u8981\u521b\u5efa\u5927\u91cf\u7684\u7d22\u5f15\u3002\u4f8b\u5982\uff0c\u5728InfluxDB\u4e0a\u4ea7\u751f\u9ad8\u8d1f\u8f7d\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u548cCPU\u65e0\u6cd5\u4f7f\u7528\u3002\u8fd9\u662f\u610f\u5916\u7684\u60c5\u51b5\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u5411\u793e\u533a\u6c42\u52a9\uff0c\u8bf7\u6c42\u8fc7\u6ee4\u62a5\u544a\u4e2d\u7684\u9ad8\u7ef4\u5ea6\u6807\u7b7e\u3002\u5982\u679c\u60a8\u611f\u5174\u8da3\uff0c\u8bf7\u5173\u6ce8FLINK-15110\u3002<\/p>\n<h1>\u8868\u6f14<\/h1>\n<h3>\u7f51\u7edc\u6027\u80fd<\/h3>\n<p>\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u4ecb\u7ecd\u4e00\u4e0b\u7f51\u7edc\u6027\u80fd\u3002\u5373\u4f7f\u4f7f\u7528\u5bb9\u5668\u7f51\u7edc\u63a5\u53e3\uff08CNI\uff09\u6216Kubernetes\u7684\u7f51\u7edc\u63d2\u4ef6\uff0c\u4e5f\u65e0\u6cd5\u907f\u514d\u7f51\u7edc\u6027\u80fd\u4e0b\u964d\u3002\u4e00\u822c\u7684Flannel\u7f51\u7edc\u5728\u4e00\u4e9b\u6d4b\u8bd5\u9879\u76ee\u4e2d\u51fa\u73b0\u4e86\u5927\u7ea630%\u7684\u6027\u80fd\u635f\u5931\u3002\u5b83\u4e0d\u592a\u7a33\u5b9a\u3002\u5728\u4f5c\u4e1a\u4e2d\u7ecf\u5e38\u4f1a\u51fa\u73b0&#8221;PartitionNotFoundException Partition xx@host not found&#8221;\u9519\u8bef\uff0c\u8fd9\u610f\u5473\u7740\u4e0b\u6e38\u65e0\u6cd5\u83b7\u53d6\u5230\u4e0a\u6e38\u7684Partition\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/58-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.13.46.png\" \/><\/div>\n<p>\u5728Flink\u5c42\u53ef\u4ee5\u6539\u5584\u7f51\u7edc\u7684\u5bb9\u9519\u80fd\u529b\u3002\u4f8b\u5982\uff0c\u5c06taskmanager.network.request-backoff.max\u4ece\u9ed8\u8ba4\u768410\u79d2\u8c03\u6574\u4e3a300\u79d2\uff0c\u5e76\u5c06Akka\u7684\u8d85\u65f6\u503c\u8bbe\u5b9a\u4e3a\u66f4\u5927\u7684\u503c\u3002<\/p>\n<p>\u8fd8\u6709\u4e00\u4e2a\u975e\u5e38\u654f\u611f\u7684\u95ee\u9898\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/61-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.14.14.png\" \/><\/div>\n<p>\u5728\u4f5c\u4e1a\u8fd0\u884c\u65f6\uff0c\u7ecf\u5e38\u4f1a\u51fa\u73b0\u4e0e\u5bf9\u7b49\u65b9\u7684\u8fde\u63a5\u91cd\u7f6e\u7684\u62a5\u544a\u3002\u8fd9\u662f\u56e0\u4e3aFlink\u88ab\u8bbe\u8ba1\u4e3a\u5bf9\u7f51\u7edc\u7684\u7a33\u5b9a\u6027\u6709\u8f83\u9ad8\u7684\u8981\u6c42\u3002\u4e3a\u4e86\u786e\u4fdd\u51c6\u786e\u6027\uff0c\u5982\u679c\u6570\u636e\u53d1\u9001\u5931\u8d25\uff0c\u6574\u4e2a\u4efb\u52a1\u5c06\u5931\u8d25\u5e76\u91cd\u65b0\u542f\u52a8\u3002\u8fd9\u6837\u5c31\u4f1a\u7ecf\u5e38\u6536\u5230\u5bf9\u7b49\u65b9\u7684\u8fde\u63a5\u91cd\u7f6e\u62a5\u544a\u3002<\/p>\n<p>\u6211\u4eec\u6709\u591a\u79cd\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u7570\u7a2e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u3092\u907f\u3051\u308b\uff08\u30af\u30ed\u30b9IDC\u30a2\u30af\u30bb\u30b9\u3092\u3057\u306a\u3044\uff09\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u4e8b\u696d\u8005\u306e\u30de\u30b7\u30f3\u306b\u30de\u30eb\u30c1\u30ad\u30e5\u30fcNIC\u3092\u8a2d\u5b9a\u3059\u308b\uff08\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5185\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u906e\u65ad\u3092\u7570\u306a\u308bCPU\u306b\u5206\u6563\u3057\u3066\u51e6\u7406\u3059\u308b\u3053\u3068\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\uff09\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Alibaba Cloud Terway\u306a\u3069\u306e\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u9ad8\u6027\u80fd\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u9078\u629e\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Kubernetes\u306e\u4eee\u60f3\u5316\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u907f\u3051\u3066\u30db\u30b9\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u9078\u629e\u3059\u308b\uff08\u4e00\u5b9a\u306e\u958b\u767a\u304c\u5fc5\u8981\uff09\u3002<\/ul>\n<p>\u9996\u5148\uff0c\u9700\u8981\u786e\u4fdd\u96c6\u7fa4\u5728\u5f02\u6784\u7f51\u7edc\u73af\u5883\u4e2d\u80fd\u6b63\u5e38\u8fd0\u884c\u3002\u5982\u679cKubernetes\u4e3b\u673a\u4f4d\u4e8e\u4e0d\u540c\u7684\u6570\u636e\u4e2d\u5fc3\uff0c\u8bbf\u95ee\u65f6\u53ef\u80fd\u4f1a\u51fa\u73b0\u7f51\u7edc\u6296\u52a8\u3002\u63a5\u4e0b\u6765\uff0c\u9700\u8981\u5728\u6765\u81ea\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u7684\u673a\u5668\u4e0a\u914d\u7f6e\u591a\u961f\u5217\u7f51\u7edc\u63a5\u53e3\u5361\uff08NIC\uff09\u3002ECS\u7684\u865a\u62df\u673a\u4f1a\u4f7f\u7528\u4e00\u5b9a\u7684CPU\u8d44\u6e90\u8fdb\u884c\u7f51\u7edc\u865a\u62df\u5316\u3002\u5982\u679c\u6ca1\u6709\u914d\u7f6e\u591a\u961f\u5217NIC\uff0c\u5219\u5728\u865a\u62df\u5316\u4e2d\u53ef\u80fd\u53ea\u4f1a\u4f7f\u7528\u4e00\u4e2a\u6216\u4e24\u4e2a\u6838\u5fc3\uff0c\u800c\u4e0d\u662f\u4e24\u4e2a\u6838\u5fc3\u90fd\u4f7f\u7528\uff0c\u5bfc\u81f4\u4e22\u5305\u5e76\u62a5\u544a&#8221;Connection Reset by peer&#8221;\u9519\u8bef\u3002<\/p>\n<p>\u53e6\u4e00\u4e2a\u89e3\u51b3\u65b9\u6848\u662f\u9009\u62e9\u7531\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u63d0\u4f9b\u7684\u9ad8\u6027\u80fd\u7f51\u7edc\u63d2\u4ef6\u3002\u4f8b\u5982\uff0c\u963f\u91cc\u4e91\u63d0\u4f9b\u7684Terway\u53ef\u4ee5\u652f\u6301\u4e0e\u4e3b\u673a\u7f51\u7edc\u76f8\u540c\u7684\u6027\u80fd\u3002\u4e0d\u4f1a\u51fa\u73b0\u50cfFlannel\u90a3\u6837\u7684\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<p>\u6700\u540e\uff0c\u5982\u679c\u65e0\u6cd5\u4f7f\u7528Terway\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u4e3b\u673a\u7f51\u7edc\u6765\u907f\u5f00Kubernetes\u7684\u865a\u62df\u5316\u7f51\u7edc\u3002\u7136\u800c\uff0c\u8fd9\u4e2a\u89e3\u51b3\u65b9\u6848\u9700\u8981\u8fdb\u884c\u6bd4Flink\u66f4\u591a\u7684\u5f00\u53d1\u5de5\u4f5c\u3002\u5982\u679c\u4f7f\u7528Kubernetes\uff0c\u4f7f\u7528\u4e3b\u673a\u7f51\u7edc\u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\u611f\u89c9\u4e0d\u9002\u5408\u3002\u8fd9\u4e0d\u7b26\u5408Kubernetes\u7684\u98ce\u683c\u3002\u53e6\u5916\uff0c\u4e5f\u6709\u4e00\u4e9b\u673a\u5668\u65e0\u6cd5\u4f7f\u7528Terway\uff0c\u4f1a\u9047\u5230\u76f8\u540c\u7684\u95ee\u9898\u3002\u6211\u4eec\u4e5f\u51c6\u5907\u4e86\u76f8\u5e94\u7684\u9879\u76ee\uff0c\u4f7f\u7528\u4e3b\u673a\u7f51\u7edc\u4ee3\u66ff\u8986\u76d6\u7f51\u7edc\u3002<\/p>\n<h3>\u78c1\u76d8\u6027\u80fd<\/h3>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u5bf9\u78c1\u76d8\u6027\u80fd\u8fdb\u884c\u8bf4\u660e\u3002\u6b63\u5982\u524d\u9762\u6240\u8ff0\uff0c\u865a\u62df\u5316\u4f1a\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u5982\u679cRocksDB\u9700\u8981\u5bf9\u672c\u5730\u78c1\u76d8\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u90a3\u4e48\u4f7f\u7528\u8986\u76d6\u6587\u4ef6\u7cfb\u7edf\u5c06\u5bfc\u81f4\u7ea630%\u7684\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/70-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.14.51.png\" \/><\/div>\n<p>\u6211\u4eec\u51b3\u5b9a\u4f7f\u7528hostPath\u3002\u7b80\u800c\u8a00\u4e4b\uff0cPod\u53ef\u4ee5\u8bbf\u95ee\u4e3b\u673a\u7684\u7269\u7406\u78c1\u76d8\u3002\u8bf7\u53c2\u8003\u524d\u9762\u56fe\u4e2d\u53f3\u4fa7\u7684hostPath\u5b9a\u4e49\u3002\u5f53\u7136\uff0cFlink\u955c\u50cf\u7684\u7528\u6237\u9700\u8981\u4e8b\u5148\u786e\u8ba4\u4ed6\u4eec\u5177\u6709\u8bbf\u95ee\u4e3b\u673a\u76ee\u5f55\u7684\u6743\u9650\u3002\u56e0\u6b64\uff0c\u6700\u597d\u5c06\u76ee\u5f55\u6743\u9650\u66f4\u6539\u4e3a777\u6216775\u3002<\/p>\n<p>\u5982\u679c\u8981\u4f7f\u7528\u6b64\u529f\u80fd\uff0c\u8bf7\u67e5\u770b\u63d0\u4f9bPod\u6a21\u677f\u7684Flink-15656\u3002\u53ef\u4ee5\u81ea\u5df1\u8fdb\u884c\u8c03\u6574\u3002Kubernetes\u63d0\u4f9b\u4e86\u5404\u79cd\u590d\u6742\u7684\u529f\u80fd\uff0c\u6211\u4eec\u77e5\u9053\u65e0\u6cd5\u5bf9\u6240\u6709\u529f\u80fd\u8fdb\u884cFlink\u8c03\u6574\u3002\u5982\u679c\u5728\u6a21\u677f\u4e2d\u5b9a\u4e49\u4e86hostPath\uff0c\u7f16\u5199\u7684Pod\u5c06\u80fd\u591f\u6839\u636e\u6a21\u677f\u4e2d\u7684hostPath\u8bbf\u95ee\u76ee\u5f55\u3002<\/p>\n<h3>OOM\u6740\u6b7b\u4e86\u3002<\/h3>\n<p>OOM killed\u4e5f\u662f\u4e00\u4e2a\u4ee4\u4eba\u70e6\u607c\u7684\u95ee\u9898\u3002\u5728\u5bb9\u5668\u73af\u5883\u4e2d\u90e8\u7f72\u670d\u52a1\u65f6\uff0c\u9700\u8981\u9884\u5148\u8bbe\u7f6ePod\u6240\u9700\u7684\u5185\u5b58\u548cCPU\u8d44\u6e90\u3002\u7136\u540e\uff0cKubernetes\u4f1a\u6307\u5b9a\u9002\u7528\u4e8e\u76f8\u5173\u8282\u70b9\uff08\u4e3b\u673a\uff09\u7684\u8d44\u6e90\u8c03\u5ea6\u914d\u7f6e\u3002\u9664\u4e86\u6307\u5b9a\u8bf7\u6c42\u53c2\u6570\u5916\uff0c\u8fd8\u9700\u8981\u8bbe\u7f6e\u9650\u5236\u53c2\u6570\u6765\u9650\u5236\u6240\u9700\u7684\u5185\u5b58\u548cCPU\u8d44\u6e90\u3002<\/p>\n<p>\u5047\u8bbe\u4e00\u4e2a\u8282\u70b9\u7684\u7269\u7406\u5185\u5b58\u4e3a64GB\uff0c\u5e76\u4e14\u9700\u89818\u4e2aPod\uff0c\u6bcf\u4e2aPod\u90fd\u67098GB\u7684\u5185\u5b58\u3002\u8868\u9762\u4e0a\u770b\u4f3c\u4e4e\u6ca1\u6709\u95ee\u9898\uff0c\u4f46\u5982\u679c\u6ca1\u6709\u5bf98\u4e2aPod\u8fdb\u884c\u9650\u5236\u4f1a\u600e\u4e48\u6837\u5462\uff1f\u6bcf\u4e2aPod\u53ef\u80fd\u4f7f\u752810GB\u7684\u5185\u5b58\uff0c\u56e0\u6b64\u5b83\u4eec\u4f1a\u7ade\u4e89\u8d44\u6e90\u3002\u7ed3\u679c\u662f\uff0c\u4e00\u4e2aPod\u53ef\u4ee5\u6b63\u5e38\u8fd0\u884c\uff0c\u4f46\u53e6\u4e00\u4e2aPod\u53ef\u80fd\u4f1a\u7a81\u7136\u88ab\u6740\u6389\u3002\u56e0\u6b64\uff0c\u9700\u8981\u8bbe\u7f6e\u5185\u5b58\u4e0a\u9650\uff0c\u4ee5\u907f\u514dPod\u56e0\u5185\u5b58\u9650\u5236\u800c\u610f\u5916\u7ec8\u6b62\u3002\u901a\u8fc7\u68c0\u67e5Kubernetes\u7684\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u770b\u5230Pod\u88ab\u6740\u6389\u662f\u56e0\u4e3aOOM\u3002\u5982\u679c\u4f60\u66fe\u7ecf\u4f7f\u7528\u8fc7Kubernetes\uff0c\u4f60\u5e94\u8be5\u9047\u5230\u8fc7\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u6211\u5e94\u8be5\u5982\u4f55\u8fdb\u884c\u6545\u969c\u6392\u9664\u5462\uff1f<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/77-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.15.25.png\" \/><\/div>\n<p>\u7b2c\u4e00\u89e3\u51b3\u65b9\u6848\u662f\u542f\u7528JVM\u7684\u672c\u5730\u5185\u5b58\u8ddf\u8e2a\uff0c\u5b9a\u671f\u68c0\u67e5\u5185\u5b58\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u6cd5\uff0c\u53ea\u80fd\u68c0\u67e5JVM\u8bf7\u6c42\u7684\u672c\u5730\u5185\u5b58\uff08\u5305\u62ecMetaspace\uff09\uff0c\u800c\u4e0d\u80fd\u68c0\u67e5JVM\u672a\u8bf7\u6c42\u7684\u5185\u5b58\u3002\u53e6\u4e00\u4e2a\u89e3\u51b3\u65b9\u6848\u662f\u4f7f\u7528Jemalloc\u548cjeprof\u5b9a\u671f\u8f6c\u50a8\u5206\u6790\u5185\u5b58\u3002<\/p>\n<p>\u8001\u5b9e\u8bf4\uff0c\u51e0\u4e4e\u6ca1\u6709\u4f7f\u7528\u7b2c\u4e8c\u79cd\u89e3\u51b3\u65b9\u6848\u7684\u5fc5\u8981\u3002\u6b64\u524d\u6211\u4eec\u5c06\u8fd9\u4e2a\u89e3\u51b3\u65b9\u6848\u5e94\u7528\u4e8eYARN\uff0c\u4f46\u53d1\u73b0\u6709\u4e00\u4e9b\u4f5c\u4e1a\u5360\u7528\u4e86\u5927\u91cf\u5185\u5b58\u3002\u7531\u4e8eJVM\u9650\u5236\u4e86\u5185\u5b58\u7684\u6700\u5927\u4f7f\u7528\u91cf\uff0c\u6240\u4ee5\u5e94\u8be5\u5b58\u5728\u4e00\u4e9b\u4e0e\u672c\u673a\u5185\u5b58\u76f8\u5173\u7684\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u4f7f\u7528Jemalloc\u548cjeprof\u6765\u5206\u6790\u5185\u5b58\uff0c\u5e76\u627e\u5230\u51c6\u786e\u7684\u672c\u673a\u5185\u5b58\u3002\u4f8b\u5982\uff0c\u67d0\u4e9b\u7528\u6237\u5728\u89e3\u6790\u914d\u7f6e\u6587\u4ef6\u4e4b\u524d\u4f1a\u81ea\u884c\u89e3\u538b\u6587\u4ef6\uff0c\u5e76\u6700\u7ec8\u8017\u5c3d\u5185\u5b58\u3002<\/p>\n<p>\u8fd9\u662f\u4e00\u79cd\u53ef\u80fd\u5bfc\u81f4OOM\u7684\u60c5\u666f\u3002\u5982\u679c\u5728\u4f7f\u7528RocksDB\u4f5c\u4e3a\u8282\u7701\u672c\u673a\u5185\u5b58\u7684\u540e\u7aef\u65f6\uff0c\u5f88\u6709\u53ef\u80fd\u4f1a\u5bfc\u81f4OOM\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u4e3aFlink 1.10\u7248\u672c\u5411\u793e\u533a\u63d0\u4f9b\u4e86\u4e00\u4e2a\u529f\u80fd\u3002\u8fd9\u4e2a\u529f\u80fd\u53ef\u4ee5\u7ba1\u7406RocksDB\u7684\u5185\u5b58\uff0c\u5e76\u7531state.backend.rockdb.memory.managed\u53c2\u6570\u8fdb\u884c\u63a7\u5236\u3002\u8be5\u529f\u80fd\u9ed8\u8ba4\u662f\u542f\u7528\u7684\u3002<\/p>\n<p>\u8fd9\u5f20\u56fe\u8868\u793a\u7684\u5185\u5bb9\u662f\u5173\u4e8e\u4ec0\u4e48\uff1f<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/82-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.15.52.png\" \/><\/div>\n<p>RocksDB\u4e0d\u63d0\u4f9b\u5185\u5b58\u63a7\u5236\u529f\u80fd\u3002\u5b83\u5177\u6709\u503c\uff08value\uff09\u3001\u5217\u8868\uff08list\uff09\u3001\u6620\u5c04\uff08map\uff09\u548c\u7a97\u53e3\uff08window\uff09\u56db\u79cd\u72b6\u6001\u3002\u5728\u9876\u90e8\u884c\u4e2d\uff0c\u8bb0\u5f55\u4e86\u5f53\u524dRocksDB\u4f7f\u7528\u7684\u603b\u5185\u5b58\u5927\u5c0f\uff0c\u5305\u62ec\u5757\u7f13\u5b58\u548c\u5199\u7f13\u51b2\u533a\u7684\u4f7f\u7528\u91cf\uff0c\u603b\u7684\u56db\u79cd\u72b6\u6001\u7684\u5185\u5b58\u4f7f\u7528\u91cf\u5e94\u5927\u4e8e\u6216\u7b49\u4e8e400MB\u3002<\/p>\n<p>\u8fd9\u662f\u56e0\u4e3aFlink RocksDB\u76ee\u524d\u6ca1\u6709\u5bf9\u72b6\u6001\u6570\u91cf\u8fdb\u884c\u9650\u5236\u3002\u72b6\u6001\u6307\u7684\u662f\u5360\u7528\u5199\u7f13\u51b2\u533a\u548c\u5757\u7f13\u5b58\u7684Column Family\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u5217\u65cf\u6700\u591a\u53ef\u4ee5\u5360\u7528\u4e24\u4e2a64MB\u7684\u5199\u7f13\u51b2\u533a\u548c\u4e00\u4e2a8MB\u7684\u5757\u7f13\u5b58\u3002\u4e00\u4e2a\u72b6\u6001\u4f7f\u7528136MB\uff0c\u56db\u4e2a\u72b6\u6001\u4f7f\u7528544MB\u3002<\/p>\n<p>\u542f\u7528 state.backend.rockdb.memory.managed \u540e\uff0c\u56db\u4e2a\u72b6\u6001\u57fa\u672c\u4e0a\u4ee5\u76f8\u540c\u7684\u8d8b\u52bf\u4f7f\u7528\u5757\u7f13\u5b58\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/86-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.16.19.png\" \/><\/div>\n<p>\u4e3a\u4ec0\u4e48\u4f1a\u8fd9\u6837\u5462\uff1f\u8fd9\u662f\u56e0\u4e3a\u4f7f\u7528\u4e86\u7f13\u5b58\u5171\u4eab\u529f\u80fd\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u901a\u8fc7\u521b\u5efaLRU\u7f13\u5b58\u6765\u5c06\u5185\u5b58\u5206\u6563\u548c\u8c03\u5ea6\uff0c\u65e0\u8bba\u662f\u4ec0\u4e48\u60c5\u51b5\u4e0b\uff0c\u6700\u8fd1\u4f7f\u7528\u7684\u5185\u5b58\u4f1a\u88ab\u91ca\u653e\u3002\u56e0\u6b64\uff0c\u5728Flink 1.10\u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\uff0c\u901a\u8fc7\u542f\u7528state.backend.rockdb.memory.managed\uff0c\u53ef\u4ee5\u89e3\u51b3\u5927\u90e8\u5206\u95ee\u9898\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d274737434c4406c3b961\/88-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-07-15 17.17.25.png\" \/><\/div>\n<p>\u7136\u800c\uff0c\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u53d1\u73b0RocksDB\u7684\u7f13\u5b58\u5171\u4eab\u8bbe\u8ba1\u4e0d\u591f\u5b8c\u5584\u3002\u8fd9\u5bfc\u81f4\u4e86\u4e00\u4e9b\u5b9e\u73b0\u4e0a\u7684\u95ee\u9898\uff0c\u4f8b\u5982\u65e0\u6cd5\u5b9e\u73b0\u4e25\u683c\u7684\u7f13\u5b58\u7b49\u3002\u542f\u7528RocksDB\u7684\u7f13\u5b58\u5171\u4eab\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5947\u602a\u7684NPE\u95ee\u9898\u3002\u6362\u53e5\u8bdd\u8bf4\uff0cRocksDB\u7684\u7f13\u5b58\u5171\u4eab\u5728\u7279\u5b9a\u573a\u666f\u4e0b\u53ef\u80fd\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u589e\u52a0taskmanager.memory.task.off-heap.size\u4ee5\u786e\u4fdd\u7f13\u51b2\u7a7a\u95f4\u3002<\/p>\n<p>\u5f53\u7136\uff0c\u9996\u5148\u9700\u8981\u77e5\u9053\u4f7f\u7528\u7684\u5185\u5b58\u60c5\u51b5\u3002\u5728\u524d\u9762\u7684\u5185\u5b58\u76d1\u63a7\u56fe\u4e2d\uff0c\u9700\u8981\u5c06\u53c2\u6570state.backend.rocksdb.metrics.block-cache-usage\u8bbe\u7f6e\u4e3atrue\u3002\u8fd9\u6837\uff0c\u53ef\u4ee5\u83b7\u53d6\u76f8\u5173\u6307\u6807\u5e76\u89c2\u5bdf\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u3002\u6bd4\u5982\uff0c\u9ed8\u8ba4\u72b6\u6001\u4e0b\uff0c1GB\u7684\u72b6\u6001TM\u7684\u7ba1\u7406\u5668\u4f7f\u7528\u4e86294MB\u7684\u5185\u5b58\u3002<\/p>\n<p>\u7ecf\u7406\u6709\u65f6\u4f1a\u5360\u7528300MB\u6216310MB\u7684\u5185\u5b58\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u8c03\u6574\u540d\u4e3ataskmanager.memory.task.off-heap.size\uff08\u9ed8\u8ba4\u503c\u4e3a0\uff09\u7684\u53c2\u6570\u6765\u589e\u52a0\u4e00\u4e9b\u5185\u5b58\uff0c\u4f8b\u598264MB\u7684\u5185\u5b58\u7b49\u3002\u8fd9\u610f\u5473\u7740\u4e3aFlink\u6240\u9700\u8981\u7684\u5806\u5916\u7a7a\u95f4\u589e\u52a0\u4e86\u989d\u5916\u7684\u7a7a\u95f4\uff0c\u5e76\u6dfb\u52a0\u4e86\u7528\u4e8eRocksDB\u7684\u7f13\u51b2\u533a\uff0c\u8fd9\u6837\u5c31\u4e0d\u4f1a\u56e0\u4e3aOOM\u800c\u88ab\u7ec8\u6b62\u3002\u8fd9\u662f\u76ee\u524d\u53ef\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002\u4f46\u662f\uff0c\u4e3a\u4e86\u6839\u672c\u89e3\u51b3\u95ee\u9898\uff0c\u9700\u8981\u4e0eRocksDB\u793e\u533a\u5408\u4f5c\u3002<\/p>\n<p>\u5982\u679c\u4f60\u4eec\u9047\u5230\u7c7b\u4f3c\u7684\u95ee\u9898\uff0c\u8bf7\u4e0e\u6211\u4eec\u8054\u7cfb\u3002<\/p>\n<h1>\u793a\u5a01\u6d3b\u52a8<\/h1>\n<p>\u6700\u540e\uff0c\u6211\u4eec\u5c06\u6f14\u793ahostPath\u7684\u4f7f\u7528\u65b9\u6cd5\u3002\u5927\u591a\u6570\u7684yaml\u6587\u4ef6\u4e0e\u793e\u533a\u4e2d\u7684\u5b9e\u4f8b\u76f8\u540c\u3002\u60a8\u9700\u8981\u5c06\u4efb\u52a1\u7ba1\u7406\u5668\u7684yaml\u6587\u4ef6\u66f4\u6539\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code>apiVersion: apps\/v1\r\nkind: Deployment\r\nmetadata:\r\n  name: flink-taskmanager\r\nspec:\r\n  replicas: 2\r\n  selector:\r\n    matchLabels:\r\n      app: flink\r\n      component: taskmanager\r\n  template:\r\n    metadata:\r\n      labels:\r\n        app: flink\r\n        component: taskmanager\r\n    spec:\r\n      containers:\r\n      - name: taskmanager\r\n        image: reg.docker.alibaba-inc.com\/chagan\/flink:latest\r\n        workingDir: \/opt\/flink\r\n        command: [\"\/bin\/bash\", \"-c\", \"$FLINK_HOME\/bin\/taskmanager.sh start; \\\r\n          while :;\r\n          do\r\n            if [[ -f $(find log -name '*taskmanager*.log' -print -quit) ]];\r\n              then tail -f -n +1 log\/*taskmanager*.log;\r\n            fi;\r\n          done\"]\r\n        ports:\r\n        - containerPort: 6122\r\n          name: rpc\r\n        livenessProbe:\r\n          tcpSocket:\r\n            port: 6122\r\n          initialDelaySeconds: 30\r\n          periodSeconds: 60\r\n        volumeMounts:\r\n        - name: flink-config-volume\r\n          mountPath: \/opt\/flink\/conf\/\r\n        - name: state-volume\r\n          mountPath: \/dump\/1\/state\r\n        securityContext:\r\n          runAsUser: 9999  # refers to user _flink_ from official flink image, change if necessary\r\n      volumes:\r\n      - name: flink-config-volume\r\n        configMap:\r\n          name: flink-config\r\n          items:\r\n          - key: flink-conf.yaml\r\n            path: flink-conf.yaml\r\n          - key: log4j.properties\r\n            path: log4j.properties\r\n      - name: state-volume\r\n        hostPath:\r\n          path: \/dump\/1\/state\r\n          type: DirectoryOrCreate\r\n<\/code><\/pre>\n<h1>\u5e38\u89c1\u95ee\u9898\u3002<\/h1>\n<p>Flink\u5982\u4f55\u901a\u8fc7Kubernetes\u7684Pod\u4e0eHDFS\u8fdb\u884c\u4ea4\u4e92\uff1f<\/p>\n<p>Flink\u548cHDFS\u7684\u4e92\u52a8\u5f88\u7b80\u5355\u3002\u53ea\u9700\u5c06\u76f8\u5173\u4f9d\u8d56\u590d\u5236\u5230\u56fe\u50cf\u4e2d\u3002\u5c06flink-shaded-hadoop-2-uber-{hadoopVersion}-{flinkVersion}.jar\u653e\u7f6e\u5728flink-home\/lib\u76ee\u5f55\u4e0b\uff0c\u5c06hdfs-site.xml\u548ccore-site.xml\u7b49\u4e00\u4e9bHadoop\u914d\u7f6e\u653e\u7f6e\u5728\u53ef\u8bbf\u95ee\u7684\u76ee\u5f55\u4e0b\u5373\u53ef\u3002\u6b64\u540e\uff0cFlink\u5c06\u80fd\u591f\u8bbf\u95eeHDFS\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4e0e\u4ece\u4e0d\u5177\u5907HDFS\u7684\u96c6\u7fa4\u8282\u70b9\u8bbf\u95eeHDFS\u662f\u76f8\u540c\u7684\u3002<\/p>\n<p>\u5728Kubernetes\u4e0a\uff0cFlink\u662f\u5982\u4f55\u5b9e\u73b0\u9ad8\u53ef\u7528\u6027\u4fdd\u969c\u7684\uff1f<\/p>\n<p>Flink\u96c6\u7fa4\u7684\u9ad8\u53ef\u7528\u6027\u4e0eFlink\u5728Kubernetes\u4e0a\u8fd0\u884c\u4e0e\u5426\u65e0\u5173\u3002\u5bf9\u4e8eFlink\u96c6\u7fa4\u7684\u9ad8\u53ef\u7528\u6027\uff0c\u9700\u8981\u4f9d\u8d56ZooKeeper\u7684\u652f\u6301\u3002\u9ad8\u53ef\u7528\u6027\u9700\u8981ZooKeeper\u5b9e\u73b0\u68c0\u67e5\u70b9ID\u8ba1\u6570\u5668\u3001\u68c0\u67e5\u70b9\u505c\u6b62\u548c\u6d41\u56fe\u505c\u6b62\u3002\u56e0\u6b64\uff0c\u5728Kubernetes\u96c6\u7fa4\u4e0a\u4e3aFlink\u63d0\u4f9bZooKeeper\u670d\u52a1\u662f\u5b9e\u73b0\u9ad8\u53ef\u7528\u6027\u7684\u6838\u5fc3\u3002ZooKeeper\u96c6\u7fa4\u53ef\u4ee5\u90e8\u7f72\u5728Kubernetes\u4e0a\u6216\u8005\u7269\u7406\u4e3b\u673a\u4e0a\u3002\u540c\u65f6\uff0c\u793e\u533a\u4e5f\u5728\u5c1d\u8bd5\u4f7f\u7528etcd\u5728Kubernetes\u4e0a\u63d0\u4f9b\u9ad8\u53ef\u7528\u6027\u89e3\u51b3\u65b9\u6848\u3002\u76ee\u524d\uff0c\u552f\u4e00\u80fd\u591f\u63d0\u4f9b\u5de5\u4e1a\u7ea7\u9ad8\u53ef\u7528\u6027\u7684\u662fZooKeeper\u3002<\/p>\n<p>3\u3001Flink on Kubernetes\u548cFlink on YARN\u54ea\u4e00\u4e2a\u66f4\u597d\u5462\uff1f\u5982\u4f55\u8fdb\u884c\u9009\u62e9\uff1f<\/p>\n<p>\u76ee\u524d\uff0cFlink on YARN\u662f\u4e00\u4e2a\u76f8\u5bf9\u6210\u719f\u7684\u7cfb\u7edf\uff0c\u4f46\u5e76\u4e0d\u9002\u7528\u4e8e\u4e91\u539f\u751f\u73af\u5883\u3002\u968f\u7740\u670d\u52a1\u8fc1\u79fb\u5230\u4e91\u4e0a\u7684\u8d8b\u52bf\uff0c\u6211\u8ba4\u4e3aFlink on Kubernetes\u6709\u7740\u5149\u660e\u7684\u672a\u6765\u3002\u5c3d\u7ba1Flink on YARN\u662f\u4e00\u4e2a\u6210\u719f\u7684\u7cfb\u7edf\uff0c\u4f46\u5b83\u53ef\u80fd\u65e0\u6cd5\u6ee1\u8db3\u65b0\u7684\u9700\u6c42\u548c\u6311\u6218\u3002\u4f8b\u5982\uff0c\u76f8\u6bd4\u4e8eYARN\uff0cKubernetes\u5728GPU\u8c03\u5ea6\u548c\u6d41\u6c34\u7ebf\u521b\u5efa\u65b9\u9762\u5177\u6709\u66f4\u9ad8\u7684\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u53ea\u662f\u8fd0\u884c\u4f5c\u4e1a, Flink on YARN\u662f\u76f8\u5bf9\u6210\u719f\u7684\u9009\u62e9\uff0c\u53ef\u4ee5\u7a33\u5b9a\u8fd0\u884c\u3002\u800cFlink on Kubernetes\u662f\u6bd4\u8f83\u65b0\u4e14\u53d7\u6b22\u8fce\u7684\u9009\u62e9\uff0c\u4e5f\u66f4\u5bb9\u6613\u8fdb\u884c\u8fed\u4ee3\u3002\u7136\u800c\uff0cFlink on Kubernetes\u7684\u5b66\u4e60\u66f2\u7ebf\u8f83\u9661\u5ced\uff0c\u9700\u8981\u5065\u5168\u7684Kubernetes O&amp;M\u56e2\u961f\u7684\u652f\u6301\u3002\u6b64\u5916\uff0c\u5728Kubernetes\u7684\u865a\u62df\u5316\u73af\u5883\u4e2d\uff0c\u4e0d\u53ef\u907f\u514d\u5730\u4f1a\u51fa\u73b0\u4e00\u5b9a\u7684\u78c1\u76d8\u548c\u7f51\u7edc\u6027\u80fd\u635f\u5931\uff0c\u8fd9\u53ef\u4ee5\u8bf4\u662f\u4e00\u4e9b\u7f3a\u70b9\u3002\u5f53\u7136\uff0c\u865a\u62df\u5316\uff08\u5bb9\u5668\u5316\uff09\u4e5f\u5e26\u6765\u4e86\u66f4\u660e\u663e\u7684\u4f18\u70b9\u3002<\/p>\n<p>\u8981\u5982\u4f55\u914d\u7f6e\/etc\/hosts\u6587\u4ef6\uff1f\u4e3a\u4e86\u4e0eHDFS\u8fdb\u884c\u4ea4\u4e92\uff0c\u60a8\u9700\u8981\u5c06HDFS\u8282\u70b9\u7684IP\u5730\u5740\u548c\u4e3b\u673a\u6620\u5c04\u5230\/etc\/hosts\u6587\u4ef6\u4e2d\u3002<\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7 Volume \u5c06 ConfigMap \u7684\u5185\u5bb9\u6302\u8f7d\u5230 \/etc\/hosts\uff0c\u4e5f\u53ef\u4ee5\u4f9d\u8d56 CoDNS \u800c\u65e0\u9700\u4fee\u6539 \/etc\/hosts\u3002<\/p>\n<p>5\u3001\u5982\u4f55\u5728Kubernetes\u4e0a\u6709\u6548\u89e3\u51b3Flink\u95ee\u9898\uff1f<\/p>\n<p>\u9996\u5148\uff0c\u4ece\u6545\u969c\u6392\u9664\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3Flink on Kubernetes\u548cFlink on YARN\u4e4b\u95f4\u7684\u533a\u522b\u3002Kubernetes\u662f\u4e00\u4e2a\u62e5\u6709\u8bb8\u591a\u590d\u6742\u7ec4\u4ef6\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u800cYARN\u662f\u57fa\u4e8eJava\u7684\u8d44\u6e90\u8c03\u5ea6\u7a0b\u5e8f\u3002\u96c6\u7fa4\u4e2d\u7684\u8bb8\u591a\u5f02\u5e38\u60c5\u51b5\u90fd\u662f\u7531\u4e3b\u673a\u6545\u969c\u5f15\u8d77\u7684\u3002\u6211\u8ba4\u4e3a\uff0c\u76f8\u6bd4\u4e8eYARN\uff0cKubernetes\u7684\u6545\u969c\u6392\u9664\u66f4\u52a0\u56f0\u96be\u3002Kubernetes\u62e5\u6709\u8bb8\u591a\u7ec4\u4ef6\u3002\u5982\u679cDNS\u89e3\u6790\u5931\u8d25\uff0c\u6211\u4eec\u9700\u8981\u68c0\u67e5CoDNS\u7684\u65e5\u5fd7\u3002\u5bf9\u4e8e\u7f51\u7edc\u6216\u78c1\u76d8\u9519\u8bef\uff0c\u6211\u4eec\u9700\u8981\u68c0\u67e5Kubernetes\u7684\u4e8b\u4ef6\u3002\u5982\u679cPod\u5f02\u5e38\u7ec8\u6b62\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3\u4e3a\u4ec0\u4e48\u4e8b\u4ef6Pod\u4f1a\u7ec8\u6b62\u3002\u8001\u5b9e\u8bf4\uff0c\u6211\u4eec\u9700\u8981\u8fd0\u7ef4\u652f\u6301\u3002<\/p>\n<p>\u6709\u5173Flink\u7684\u6545\u969c\u6392\u9664\uff0c\u65e0\u8bba\u662f\u5728Kubernetes\u8fd8\u662fYARN\u4e0a\uff0c\u6392\u67e5\u6545\u969c\u7684\u65b9\u6cd5\u90fd\u662f\u4e00\u6837\u7684\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u4f8b\u5916\u304c\u767a\u751f\u3057\u3066\u3044\u306a\u3044\u304b\u30ed\u30b0\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c\u306b\u3064\u3044\u3066\u306f\u3001jstack\u3092\u4f7f\u3063\u3066CPU\u3068\u30b3\u30fc\u30eb\u30b9\u30bf\u30c3\u30af\u306b\u4f8b\u5916\u304c\u306a\u3044\u304b\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">OOM\u30ea\u30b9\u30af\u304c\u5e38\u306b\u5b58\u5728\u3057\u305f\u308a\u3001\u30d5\u30ebGC\u304c\u767a\u751f\u3057\u3084\u3059\u304b\u3063\u305f\u308a\u3059\u308b\u5834\u5408\u306f\u3001jmap\u3092\u4f7f\u3063\u3066\u30e1\u30e2\u30ea\u3092\u5360\u6709\u3059\u308b\u30d6\u30ed\u30c3\u30af\u3092\u78ba\u8a8d\u3057\u305f\u308a\u3001\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u304c\u306a\u3044\u304b\u5206\u6790\u3057\u305f\u308a\u3057\u307e\u3059\u3002<\/ul>\n<p>\u8fd9\u4e9b\u6545\u969c\u6392\u9664\u65b9\u6cd5\u4e0d\u4f9d\u8d56\u4e8e\u5e73\u53f0\uff0c\u9002\u7528\u4e8e\u6240\u6709\u573a\u666f\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u67d0\u4e9b\u5bb9\u5668\u955c\u50cf\u53ef\u80fd\u6ca1\u6709\u4e00\u4e9b\u8c03\u8bd5\u5de5\u5177\u3002\u5efa\u8bae\u5728\u6784\u5efaFlink on Kubernetes\u96c6\u7fa4\u65f6\uff0c\u521b\u5efa\u79c1\u6709\u955c\u50cf\uff0c\u5e76\u5b89\u88c5\u76f8\u5e94\u7684\u8c03\u8bd5\u5de5\u5177\u3002<\/p>\n<p>\u672c\u535a\u5ba2\u662f\u4ece\u82f1\u6587\u7248\u7ffb\u8bd1\u7684\uff0c\u539f\u6587\u8bf7\u70b9\u51fb\u8fd9\u91cc\u67e5\u770b\u3002\u90e8\u5206\u5185\u5bb9\u91c7\u7528\u673a\u5668\u7ffb\u8bd1\uff0c\u8bf7\u60a8\u5982\u53d1\u73b0\u7ffb\u8bd1\u9519\u8bef\uff0c\u6b22\u8fce\u6307\u6b63\u3002<\/p>\n<p>\u963f\u91cc\u5df4\u5df4\u4e91\u62e5\u6709\u65e5\u672c\u7684\u4e24\u4e2a\u6570\u636e\u4e2d\u5fc3\uff0c\u5e76\u4e14\u662f\u4e9a\u592a\u5730\u533a\u7b2c\u4e00\u5927\u4e91\u57fa\u7840\u8bbe\u65bd\u670d\u52a1\u63d0\u4f9b\u5546\uff082019\u5e74Gartner\u62a5\u544a\uff09\uff0c\u62e5\u6709\u8d85\u8fc760\u4e2a\u53ef\u7528\u533a\u57df\u3002<br \/>\n\u6b32\u4e86\u89e3\u66f4\u591a\u963f\u91cc\u5df4\u5df4\u4e91\u7684\u8be6\u60c5\uff0c\u8bf7\u70b9\u51fb\u6b64\u5904\u3002<br \/>\n\u963f\u91cc\u5df4\u5df4\u4e91\u65e5\u672c\u5b98\u65b9\u7f51\u9875\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecd\u4e86\u5bb9\u5668\u7ba1\u7406\u7cfb\u7edf\u7684\u53d1\u5c55\uff0c\u5e76\u89e3\u91ca\u4e86\u5728Kubernetes\u4e0a\u4f7f\u7528Apache Flink\u7684\u6700\u4f73\u5b9e\u8df5\u3002 \u963f\u91cc\u5df4 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-36132","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5728Kubernetes\u4e2d\u4f7f\u7528Apache Flink\u7684\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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