{"id":33229,"date":"2023-11-20T02:28:01","date_gmt":"2023-03-26T05:13:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%a1%ae%e8%ae%a4kubernetes-priorityclass%e7%9a%84%e8%a1%8c%e4%b8%ba\/"},"modified":"2024-05-04T09:54:51","modified_gmt":"2024-05-04T01:54:51","slug":"%e7%a1%ae%e8%ae%a4kubernetes-priorityclass%e7%9a%84%e8%a1%8c%e4%b8%ba","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%a1%ae%e8%ae%a4kubernetes-priorityclass%e7%9a%84%e8%a1%8c%e4%b8%ba\/","title":{"rendered":"\u786e\u8ba4[Kubernetes] PriorityClass\u7684\u884c\u4e3a"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

PriorityClass\u662f\u7528\u4e8e\u8bbe\u7f6ePod\u4f18\u5148\u7ea7\u7684\u5b57\u6bb5\u3002PriorityClass\u7684\u7279\u70b9\u662f\u53ef\u4ee5\u6839\u636e\u4f18\u5148\u7ea7\uff0c\u5bf9\u5df2\u90e8\u7f72\u7684Pod\u8fdb\u884c\u64a4\u9000\u9694\u79bb\u3002<\/p>\n

\u521b\u5efaPriorityClass<\/h1>\n

\u9996\u5148\uff0c\u521b\u5efaPriorityClass\u3002\u8fd9\u6b21\u6211\u4eec\u5c06\u521b\u5efa\u4ee5\u4e0b\u4e24\u4e2aPriorityClass\u3002<\/p>\n

apiVersion<\/span>:<\/span> scheduling.k8s.io\/v1<\/span>\r\nkind<\/span>:<\/span> PriorityClass<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> high-priority<\/span>\r\nvalue<\/span>:<\/span> 100<\/span> #10\u5104\u4ee5\u4e0b\u306e\u6574\u6570\u5024\u3002\u5927\u304d\u3044\u307b\u3069\u512a\u5148\u5ea6\u304c\u9ad8\u3044<\/span>\r\nglobalDefault<\/span>:<\/span> false<\/span> #true\u306b\u3059\u308b\u3068\u3001PriorityClass\u3092\u6307\u5b9a\u3057\u306a\u3044Pod\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306b\u306a\u308b<\/span>\r\ndescription<\/span>:<\/span> \"<\/span>This<\/span> priority<\/span> class<\/span> should<\/span> be<\/span> used<\/span> for<\/span> XYZ<\/span> service<\/span> pods<\/span> only.\"<\/span> #\u4efb\u610f\u306e\u6587\u5b57\u5217<\/span>\r\n<\/code><\/pre>\n
apiVersion<\/span>:<\/span> scheduling.k8s.io\/v1<\/span>\r\nkind<\/span>:<\/span> PriorityClass<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> low-priority<\/span>\r\nvalue<\/span>:<\/span> 10<\/span>\r\nglobalDefault<\/span>:<\/span> false<\/span>\r\ndescription<\/span>:<\/span> \"<\/span>This<\/span> priority<\/span> class<\/span> should<\/span> be<\/span> used<\/span> for<\/span> ABC<\/span> service<\/span> pods<\/span> only.\"<\/span>\r\n<\/code><\/pre>\n
\u6211\u5c06\u5e94\u7528\u8fd9\u4efd\u5ba3\u8a00\u3002<\/p>\n
$ kubectl apply -f .\r\npriorityclass.scheduling.k8s.io\/high-priority created\r\npriorityclass.scheduling.k8s.io\/low-priority created\r\n$ kubectl get priorityclasses.scheduling.k8s.io\r\nNAME                      VALUE        GLOBAL-DEFAULT   AGE\r\nhigh-priority             100          false            56s\r\nlow-priority              10           false            56s\r\nsystem-cluster-critical   2000000000   false            109d\r\nsystem-node-critical      2000001000   false            109d\r\n<\/code><\/pre>\n
Pod\u7684\u90e8\u7f72\u548c\u8fd0\u884c\u9a8c\u8bc1<\/h1>\n
\u4f18\u5148\u7ea7\uff1a\u901a\u8fc7\u4e09\u4e2aPod\u6765\u786e\u8ba4\u64cd\u4f5c\uff0c\u53ef\u4ee5\u662f\u9ad8\u4f18\u5148\u7ea7\/\u4f4e\u4f18\u5148\u7ea7\/\u672a\u8bbe\u5b9a\u3002<\/p>\n
apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Pod<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> nginx-high<\/span>\r\nspec<\/span>:<\/span>\r\n  containers<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span> nginx-high<\/span>\r\n    image<\/span>:<\/span> nginx:latest<\/span>\r\n    resources<\/span>:<\/span>\r\n      requests<\/span>:<\/span>\r\n        cpu<\/span>:<\/span> 1500m<\/span>\r\n  priorityClassName<\/span>:<\/span> high-priority<\/span>\r\n<\/code><\/pre>\n
apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Pod<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> nginx-low<\/span>\r\nspec<\/span>:<\/span>\r\n  containers<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span> nginx-low<\/span>\r\n    image<\/span>:<\/span> nginx:latest<\/span>\r\n    resources<\/span>:<\/span>\r\n      requests<\/span>:<\/span>\r\n        cpu<\/span>:<\/span> 1500m<\/span>\r\n  priorityClassName<\/span>:<\/span> low-priority<\/span>\r\n<\/code><\/pre>\n
apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Pod<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> nginx<\/span>\r\nspec<\/span>:<\/span>\r\n  containers<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span> nginx<\/span>\r\n    image<\/span>:<\/span> nginx:latest<\/span>\r\n    resources<\/span>:<\/span>\r\n      requests<\/span>:<\/span>\r\n        cpu<\/span>:<\/span> 1500m<\/span>\r\n<\/code><\/pre>\n
\u6bcf\u4e2aPod\u65e0\u6cd5\u540c\u65f6\u5171\u5b58\uff0c\u56e0\u4e3aCPU\u7684\u8bf7\u6c42\uff08\u4e0b\u9650\uff09\u5df2\u88ab\u8bbe\u7f6e\u4e3a1.5\u4e2a\u5185\u6838\uff0c\u800cworker\u8282\u70b9\u7684CPU\u662f2\u4e2a\u5185\u6838\u3002<\/p>\n
\u6309\u7167\u4f18\u5148\u7ea7\u4ece\u4f4e\u5230\u9ad8\u7684\u987a\u5e8f<\/h2>\n
\u9996\u5148\uff0c\u6309\u7167\u4f18\u5148\u7ea7\u4ece\u4f4e\u5230\u9ad8\u7684\u987a\u5e8f\uff08\u6ca1\u6709\u8bbe\u7f6e -> \u4f4e\u4f18\u5148\u7ea7 -> \u9ad8\u4f18\u5148\u7ea7\uff09\u8fdb\u884capply\u3002\u540c\u65f6\uff0c\u5728\u53e6\u4e00\u4e2a\u7ec8\u7aef\u7a97\u53e3\u4e2d\u786e\u8ba4Pod\u7684\u72b6\u6001\u8f6c\u6362\u3002<\/p>\n
$ kubectl get pod -w\r\nNAME    READY   STATUS    RESTARTS   AGE\r\nnginx   1\/1     Running   0          22s\r\nnginx-low   0\/1     Pending   0          0s #kubectl apply -f nginx-low.yaml \u5b9f\u884c\r\nnginx-low   0\/1     Pending   0          0s\r\nnginx-low   0\/1     Pending   0          0s\r\nnginx       1\/1     Terminating   0          27s\r\nnginx       0\/1     Terminating   0          28s\r\nnginx       0\/1     Terminating   0          33s\r\nnginx       0\/1     Terminating   0          33s\r\nnginx-low   0\/1     Pending       0          6s\r\nnginx-low   0\/1     ContainerCreating   0          6s\r\nnginx-low   0\/1     ContainerCreating   0          7s\r\nnginx-low   1\/1     Running             0          11s\r\nnginx-high   0\/1     Pending             0          0s #kubectl apply -f nginx-high.yaml \u5b9f\u884c\r\nnginx-high   0\/1     Pending             0          0s\r\nnginx-high   0\/1     Pending             0          0s\r\nnginx-low    1\/1     Terminating         0          45s\r\nnginx-low    0\/1     Terminating         0          46s\r\nnginx-low    0\/1     Terminating         0          47s\r\nnginx-low    0\/1     Terminating         0          47s\r\nnginx-high   0\/1     Pending             0          2s\r\nnginx-high   0\/1     ContainerCreating   0          2s\r\nnginx-high   0\/1     ContainerCreating   0          3s\r\nnginx-high   1\/1     Running             0          7s\r\n<\/code><\/pre>\n
\u6bcf\u5f53\u4e00\u4e2a\u4f18\u5148\u7ea7\u9ad8\u7684Pod\u88abapply\uff0c\u4f4e\u4f18\u5148\u7ea7\u7684Pod\u4f1a\u88ab\u6682\u505c\uff0c\u7136\u540e\u9ad8\u4f18\u5148\u7ea7\u7684Pod\u88ab\u90e8\u7f72\u3002\u6700\u7ec8\uff0c\u53ea\u4f1a\u4fdd\u7559\u4f18\u5148\u7ea7\u6700\u9ad8\u7684nginx-high Pod\u3002<\/p>\n
\u6309\u4f18\u5148\u7ea7\u6392\u5e8f<\/h2>\n
\u8fd9\u6b21\u5c06\u6309\u9ad8\u5230\u4f4e\u7684\u987a\u5e8f\u8fdb\u884c\u7533\u8bf7\u3002\u540c\u65f6\uff0c\u5728\u53e6\u4e00\u4e2a\u7ec8\u7aef\u4e0a\u786e\u8ba4Pod\u7684\u72b6\u6001\u8f6c\u6362\u3002<\/p>\n
$ kubectl get pod -w\r\nNAME         READY   STATUS    RESTARTS   AGE\r\nnginx-high   0\/1     Pending   0          0s\r\nnginx-high   0\/1     Pending   0          0s\r\nnginx-high   0\/1     ContainerCreating   0          0s\r\nnginx-high   0\/1     ContainerCreating   0          1s\r\nnginx-high   1\/1     Running             0          6s\r\nnginx-low    0\/1     Pending             0          0s #kubectl apply -f nginx-low.yaml\u5b9f\u884c\r\nnginx-low    0\/1     Pending             0          0s\r\nnginx-high   1\/1     Terminating         0          53s #kubectl delete -f nginx-high.yaml\u5b9f\u884c\r\nnginx-high   0\/1     Terminating         0          54s\r\nnginx-high   0\/1     Terminating         0          64s\r\nnginx-high   0\/1     Terminating         0          64s\r\nnginx-low    0\/1     Pending             0          49s\r\nnginx-low    0\/1     ContainerCreating   0          49s\r\nnginx-low    0\/1     ContainerCreating   0          50s\r\nnginx-low    1\/1     Running             0          55s\r\n<\/code><\/pre>\n
\u5f53\u9ad8\u4f18\u5148\u7ea7\u7684Pod\u5904\u4e8e\u8fd0\u884c\u72b6\u6001\u65f6\uff0c\u5982\u679c\u5c1d\u8bd5\u90e8\u7f72\u4f4e\u4f18\u5148\u7ea7\u7684Pod\u800c\u8d44\u6e90\u4e0d\u8db3\uff0c\u5219\u65e0\u6cd5\u8fdb\u884c\u8c03\u5ea6\uff0c\u56e0\u6b64\u4f1a\u5904\u4e8e\u6302\u8d77\u72b6\u6001\u3002
\n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u505c\u6b62\u9ad8\u4f18\u5148\u7ea7\u7684Pod\uff0c\u5219\u4f1a\u8c03\u5ea6\u548c\u90e8\u7f72\u4f4e\u4f18\u5148\u7ea7\u7684Pod\u3002<\/p>\n
\u603b\u7ed3<\/h1>\n
\u6211\u5df2\u7ecf\u786e\u8ba4\u4e86\u51e0\u6b21\u5173\u4e8eKubernetes\u8c03\u5ea6\u63a7\u5236\u529f\u80fd\u7684\u5185\u5bb9\u3002<\/p>\n
cordon<\/p>\n
\u30ce\u30fc\u30c9\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u5bfe\u8c61\u304b\u3089\u5916\u3059<\/p>\n
nodeSelector\/Node Affinity\/Inter-Pod Affinity\u306a\u3069<\/p>\n
Pod\u30c7\u30d7\u30ed\u30a4\u6642\u306b\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3059\u308b\u30ce\u30fc\u30c9\u3092\u6c7a\u3081\u308b<\/p>\n
Taints\/Tolerations<\/p>\n
\u30ce\u30fc\u30c9\u306b\u8a2d\u5b9a\u3057\u305fTaints\u3092\u8a31\u5bb9\u3067\u304d\u308bPod\u306e\u307f\u3092\u30ce\u30fc\u30c9\u304c\u8a31\u53ef\u3059\u308b<\/p>\n
PriorityClass\uff08\u4eca\u56de\uff09<\/p>\n
\u512a\u5148\u5ea6\u306b\u5fdc\u3058\u3066\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3067\u304d\u308bPod\u3092\u6c7a\u5b9a\u3059\u308b<\/p>\n
\u6211\u89c9\u5f97\u5b83\u7684\u529f\u80fd\u5f88\u5f3a\u5927\uff0c\u505a\u5f97\u5f88\u597d\uff0c\u4f46\u6211\u53ea\u662f\u786e\u8ba4\u4e86\u5176\u64cd\u4f5c\uff0c\u8fd8\u6ca1\u6d89\u53ca\u5230\u5b9e\u9645\u7684\u4f7f\u7528\u60c5\u666f\u3002\u6211\u5e0c\u671b\u901a\u8fc7\u8bbe\u8ba1\u548c\u8fd0\u8425\uff0c\u6765\u8003\u8651\u5b9e\u9645\u7684\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u9996\u5148 PriorityClass\u662f\u7528\u4e8e\u8bbe\u7f6ePod\u4f18\u5148\u7ea7\u7684\u5b57\u6bb5\u3002PriorityClass\u7684\u7279\u70b9\u662f\u53ef\u4ee5\u6839\u636e\u4f18\u5148\u7ea7 […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-33229","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u786e\u8ba4[Kubernetes] PriorityClass\u7684\u884c\u4e3a - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u786e\u8ba4kubernetes-priorityclass\u7684\u884c\u4e3a\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u786e\u8ba4[Kubernetes] PriorityClass\u7684\u884c\u4e3a\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 PriorityClass\u662f\u7528\u4e8e\u8bbe\u7f6ePod\u4f18\u5148\u7ea7\u7684\u5b57\u6bb5\u3002PriorityClass\u7684\u7279\u70b9\u662f\u53ef\u4ee5\u6839\u636e\u4f18\u5148\u7ea7 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u786e\u8ba4kubernetes-priorityclass\u7684\u884c\u4e3a\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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