{"id":12118,"date":"2023-03-15T15:55:49","date_gmt":"2023-03-15T07:55:49","guid":{"rendered":"https:\/\/blog.ywdevops.cn\/?p=12118"},"modified":"2023-04-07T17:07:53","modified_gmt":"2023-04-07T09:07:53","slug":"kube-apiserver","status":"publish","type":"post","link":"https:\/\/blog.ywdevops.cn\/index.php\/2023\/03\/15\/kube-apiserver\/","title":{"rendered":"\u901a\u8fc7\u591c\u83ba\u76d1\u63a7kube-apiserver"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">apiserver\u63d0\u4f9b\u4e86metircs\u63a5\u53e3\u7528\u6765\u66b4\u9732\u6570\u636e\uff0c\u4f46\u662f\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f\u6ca1\u6709\u6743\u9650\u8bbf\u95ee\u7684\uff0c\u9700\u8981\u901a\u8fc7token\u7684\u65b9\u5f0f\u8bf7\u6c42\uff0c\u4e0d\u52a0token\u8bf7\u6c42\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"710\" height=\"215\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/14-3.png\" alt=\"\" class=\"wp-image-12133\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/14-3.png 710w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/14-3-300x91.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/14-3-600x182.png 600w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001\u521b\u5efa\u89d2\u8272\u548c\u6743\u9650\u8bbe\u7f6e\uff0c\u5148\u521b\u5efa\u547d\u540d\u7a7a\u95f4\uff0c\u7136\u540e\u6267\u884c\u521b\u5efa\u547d\u4ee4\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl create ns monitor<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>---\napiVersion: rbac.authorization.k8s.io\/v1\nkind: ClusterRole\nmetadata:\n  name: categraf-clusterrole\nrules:\n  - apiGroups: &#91;\"\"]\n    resources:\n      - nodes\n      - nodes\/metrics\n      - nodes\/stats\n      - nodes\/proxy\n      - services\n      - endpoints\n      - pods\n    verbs: &#91;\"get\", \"list\", \"watch\"]\n  - apiGroups:\n      - extensions\n      - networking.k8s.io\n    resources:\n      - ingresses\n    verbs: &#91;\"get\", \"list\", \"watch\"]\n  - nonResourceURLs: &#91;\"\/metrics\", \"\/metrics\/cadvisor\"]\n    verbs: &#91;\"get\"]\n---\napiVersion: v1\nkind: ServiceAccount\nmetadata:\n  name: categraf-serviceaccount\n  namespace: monitor\n---\napiVersion: rbac.authorization.k8s.io\/v1\nkind: ClusterRoleBinding\nmetadata:\n  name: categraf-clusterrolebinding\nroleRef:\n  apiGroup: rbac.authorization.k8s.io\n  kind: ClusterRole\n  name: categraf-clusterrole\nsubjects:\n- kind: ServiceAccount\n  name: categraf-serviceaccount\n  namespace: monitor\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u67e5\u770bcategraf-serviceaccount\u7684\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u5230\u9ed8\u8ba4\u751f\u6210\u7684token\u540d\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl describe  sa categraf-serviceaccount  -n monitor\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"709\" height=\"192\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/13-2.png\" alt=\"\" class=\"wp-image-12130\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/13-2.png 709w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/13-2-300x81.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/13-2-600x162.png 600w\" sizes=\"auto, (max-width: 709px) 100vw, 709px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u83b7\u53d6token\u7684\u503c\uff0c\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl describe secret categraf-serviceaccount-token-5vdkg -n monitor<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001\u518d\u6b21\u901a\u8fc7token\uff0c\u8fdb\u884c\u8bf7\u6c42\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>token=\"\u5185\u5bb9\"\ncurl -s -k -H \"Authorization: Bearer $token\" https:\/\/127.0.0.1:6443\/metrics &gt; result_metrics<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5df2\u7ecf\u53ef\u4ee5\u6b63\u5e38\u8bf7\u6c42\u5230\u6570\u636e\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"710\" height=\"358\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/15-3.png\" alt=\"\" class=\"wp-image-12136\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/15-3.png 710w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/15-3-300x151.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/15-3-600x303.png 600w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c APIServer \u662f\u4e8c\u8fdb\u5236\u65b9\u5f0f\u90e8\u7f72\u76f4\u63a5\u901a\u8fc7Categraf \u7684 Prometheus \u63d2\u4ef6\u6765\u6293\u53d6\u5c31\u53ef\u4ee5\u4e86\u3002\u5982\u679c APIServer \u662f\u90e8\u7f72\u5728 Kubernetes \u7684\u5bb9\u5668\u91cc\uff0c\u53ef\u4f7f\u7528\u670d\u52a1\u53d1\u73b0\u673a\u5236\u6765\u505a\u6293\u53d6\u6570\u636e<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u4f8b\u5b50\u4e2d\u4f7f\u7528prometheus\u7684agent mode\u6a21\u5f0f\u6765\u6293\u53d6\u6570\u636e\uff0cPrometheus \u65b0\u7248\u672c(v2.32.0)\u652f\u6301\u4e86 agent mode \u6a21\u5f0f\uff0c\u5373\u628a Prometheus \u8fdb\u7a0b\u5f53\u505a\u91c7\u96c6\u5668 agent\uff0c\u91c7\u96c6\u4e86\u6570\u636e\u4e4b\u540e\u901a\u8fc7 remote write \u65b9\u5f0f\u4f20\u7ed9\u591c\u83ba\u670d\u52a1\u7aef<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4\u3001\u90e8\u7f72prometheus agent mode<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(1)\u3001\u9996\u5148\u51c6\u5907prometheus\u6240\u9700\u8981\u7684\u914d\u7f6e\u6587\u4ef6prometheus.yml\uff0c\u505a\u6210ConfigMap\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>apiVersion: v1\nkind: ConfigMap\nmetadata:\n  name: prometheus-agent-conf\n  labels:\n    name: prometheus-agent-conf\n  namespace: monitor\ndata:\n  prometheus.yml: |-\n    global:\n      scrape_interval: 15s\n      evaluation_interval: 15s\n    scrape_configs:\n      - job_name: 'kube_apiserver'\n        kubernetes_sd_configs:\n        - role: endpoints\n        scheme: https\n        tls_config:\n          ca_file: \/var\/run\/secrets\/kubernetes.io\/serviceaccount\/ca.crt\n        bearer_token_file: \/var\/run\/secrets\/kubernetes.io\/serviceaccount\/token\n        relabel_configs:\n        - source_labels: &#91;__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]\n          action: keep\n          regex: default;kubernetes;https    #\u6b64\u4e09\u4e2a\u503c\u5bf9\u5e94\u4e0a\u9762\u7684source_labels\u4e2d\u7684\u4e09\u4e2a\u5b57\u6bb5\n    remote_write:\n    - url: 'http:\/\/10.9.2.247:19000\/prometheus\/v1\/write'   #\u591c\u83ba\u670d\u52a1\u7aef\u5730\u5740\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u9762\u914d\u7f6e\u4e2d\u670d\u52a1\u53d1\u73b0\u4f7f\u7528\u7684\u662fendpoints\uff0c\u5339\u914d\u89c4\u5219\u6709\u4e09\u70b9(\u901a\u8fc7 relabel_configs \u7684 keep \u5b9e\u73b0)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>__meta_kubernetes_namespace<\/code>&nbsp;endpoint \u7684 namespace \u662fdefault<\/li>\n\n\n\n<li><code>__meta_kubernetes_service_name<\/code>&nbsp;service name\u662fkubernetes<\/li>\n\n\n\n<li><code>__meta_kubernetes_endpoint_port_name<\/code>&nbsp;endpoint \u7684 port_name \u662fhttps<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">(2)\u3001\u90e8\u7f72 Prometheus agent\uff0c\u8981\u628a Prometheus \u8fdb\u7a0b\u5f53\u505a agent \u6765\u7528\uff0c\u9700\u8981\u542f\u7528\u8fd9\u4e2a feature\uff0c\u901a\u8fc7\u547d\u4ee4\u884c\u53c2\u6570&nbsp;<code>--enable-feature=agent<\/code>&nbsp;\u5373\u53ef\u542f\u7528\uff0c\u901a\u8fc7deployment\u6765\u90e8\u7f72\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: prometheus-agent\n  namespace: monitor\n  labels:\n    app: prometheus-agent\nspec:\n  replicas: 1\n  selector:\n    matchLabels:\n      app: prometheus-agent\n  template:\n    metadata:\n      labels:\n        app: prometheus-agent\n    spec:\n      serviceAccountName: categraf-serviceaccount   #\u6ce8\u610f\u8fd9\u4e2a\u503c\u9700\u8981\u4e0e\u4e0a\u9762\u521b\u5efa\u7684\u76f8\u540c\n      containers:\n        - name: prometheus\n          image: prom\/prometheus\n          args:\n            - \"--config.file=\/etc\/prometheus\/prometheus.yml\"\n            - \"--web.enable-lifecycle\"\n            - \"--enable-feature=agent\"              #\u542f\u7528\u63d2\u4ef6\n          ports:\n            - containerPort: 9090\n          resources:\n            requests:\n              cpu: 500m\n              memory: 500M\n            limits:\n              cpu: 1\n              memory: 1Gi\n          volumeMounts:\n            - name: prometheus-config-volume\n              mountPath: \/etc\/prometheus\/\n            - name: prometheus-storage-volume\n              mountPath: \/prometheus\/\n      volumes:\n        - name: prometheus-config-volume\n          configMap:\n            defaultMode: 420            #\u5341\u8fdb\u5236\u8868\u793a\u6cd5\uff0c\u516b\u8fdb\u5236\u4e3a644\n            name: prometheus-agent-conf\n        - name: prometheus-storage-volume\n          emptyDir: {}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u521b\u5efa\u5b8c\u6210\u540e\uff0c\u5728\u591c\u83ba\u670d\u52a1\u7aef\u7684\u5373\u65f6\u770b\u56fe\u91cc\u53ef\u4ee5\u770b\u5230apiserver\u7684\u6307\u6807\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"706\" height=\"299\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/1-6.png\" alt=\"\" class=\"wp-image-12141\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/1-6.png 706w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/1-6-300x127.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2023\/03\/1-6-600x254.png 600w\" sizes=\"auto, (max-width: 706px) 100vw, 706px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5173\u952e\u6307\u6807:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># HELP apiserver_request_duration_seconds &#91;STABLE] Response latency distribution in seconds for each verb, dry run value, group, version, resource, subresource, scope and component.\n# TYPE apiserver_request_duration_seconds histogram\napiserver\u54cd\u5e94\u7684\u65f6\u95f4\u5206\u5e03\uff0c\u6309\u7167url \u548c verb \u5206\u7c7b\n\u4e00\u822c\u6309\u7167instance\u548cverb+\u65f6\u95f4 \u6c47\u805a\n\n# HELP apiserver_request_total &#91;STABLE] Counter of apiserver requests broken out for each verb, dry run value, group, version, resource, scope, component, and HTTP response code.\n# TYPE apiserver_request_total counter\napiserver\u7684\u8bf7\u6c42\u603b\u6570\uff0c\u6309\u7167verb\u3001 version\u3001 group\u3001resource\u3001scope\u3001component\u3001 http\u8fd4\u56de\u7801\u5206\u7c7b\u7edf\u8ba1\n\n# HELP apiserver_current_inflight_requests &#91;STABLE] Maximal number of currently used inflight request limit of this apiserver per request kind in last second.\n# TYPE apiserver_current_inflight_requests gauge\n\u6700\u5927\u5e76\u53d1\u8bf7\u6c42\u6570, \u6309mutating(\u975eget list watch\u7684\u8bf7\u6c42)\u548creadOnly(get list watch)\u5206\u522b\u9650\u5236\n\u8d85\u8fc7max-requests-inflight(\u9ed8\u8ba4\u503c400)\u548cmax-mutating-requests-inflight(\u9ed8\u8ba4200)\u7684\u8bf7\u6c42\u4f1a\u88ab\u9650\u6d41\napiserver\u53d8\u66f4\u65f6\u8981\u6ce8\u610f\u89c2\u5bdf\uff0c\u4e5f\u662f\u53cd\u9988\u96c6\u7fa4\u5bb9\u91cf\u7684\u4e00\u4e2a\u91cd\u8981\u6307\u6807\n\n# HELP apiserver_response_sizes &#91;STABLE] Response size distribution in bytes for each group, version, verb, resource, subresource, scope and component.\n# TYPE apiserver_response_sizes histogram\napiserver \u54cd\u5e94\u5927\u5c0f\uff0c\u5355\u4f4dbyte, \u6309\u7167verb\u3001 version\u3001 group\u3001resource\u3001scope\u3001component\u5206\u7c7b\u7edf\u8ba1\n\n# HELP watch_cache_capacity &#91;ALPHA] Total capacity of watch cache broken by resource type.\n# TYPE watch_cache_capacity gauge\n\u6309\u7167\u8d44\u6e90\u7c7b\u578b\u7edf\u8ba1\u7684watch\u7f13\u5b58\u5927\u5c0f\n\n# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.\n# TYPE process_cpu_seconds_total counter\n\u6bcf\u79d2\u949f\u7528\u6237\u6001\u548c\u7cfb\u7edf\u6001cpu\u6d88\u8017\u65f6\u95f4, \u8ba1\u7b97apiserver\u8fdb\u7a0b\u7684cpu\u7684\u4f7f\u7528\u7387\n\n# HELP process_resident_memory_bytes Resident memory size in bytes.\n# TYPE process_resident_memory_bytes gauge\napiserver\u7684\u5185\u5b58\u4f7f\u7528\u91cf(\u5355\u4f4d:Byte)\n\n# HELP workqueue_adds_total &#91;ALPHA] Total number of adds handled by workqueue\n# TYPE workqueue_adds_total counter\napiserver\u4e2d\u5305\u542b\u7684controller\u7684\u5de5\u4f5c\u961f\u5217\uff0c\u5df2\u5904\u7406\u7684\u4efb\u52a1\u603b\u6570\n\n# HELP workqueue_depth &#91;ALPHA] Current depth of workqueue\n# TYPE workqueue_depth gauge\napiserver\u4e2d\u5305\u542b\u7684controller\u7684\u5de5\u4f5c\u961f\u5217\u6df1\u5ea6\uff0c\u8868\u793a\u5f53\u524d\u961f\u5217\u4e2d\u8981\u5904\u7406\u7684\u4efb\u52a1\u7684\u6570\u91cf\uff0c\u6570\u503c\u8d8a\u5c0f\u8d8a\u597d \n\u4f8b\u5982APIServiceRegistrationController admission_quota_controller<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>apiserver\u63d0\u4f9b\u4e86metircs\u63a5\u53e3\u7528\u6765\u66b4\u9732\u6570\u636e\uff0c\u4f46\u662f\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f\u6ca1\u6709\u6743\u9650\u8bbf\u95ee\u7684\uff0c\u9700\u8981\u901a\u8fc7token\u7684\u65b9 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":12143,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[93,109],"tags":[],"class_list":["post-12118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kubernetes","category-didi"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/12118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/comments?post=12118"}],"version-history":[{"count":21,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/12118\/revisions"}],"predecessor-version":[{"id":12896,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/12118\/revisions\/12896"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media\/12143"}],"wp:attachment":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media?parent=12118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/categories?post=12118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/tags?post=12118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}