{"id":207356,"date":"2025-07-08T12:24:35","date_gmt":"2025-07-08T04:24:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207356\/"},"modified":"2025-07-08T12:24:35","modified_gmt":"2025-07-08T04:24:35","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8golang%e5%9c%a8kubernetes%e4%b8%ad%e7%9a%84daemonset%e4%b8%ad%e8%bf%90%e8%a1%8c%e4%b8%bb%e6%9c%ba%e5%91%bd%e4%bb%a4%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207356\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528golang\u5728kubernetes\u4e2d\u7684DaemonSet\u4e2d\u8fd0\u884c\u4e3b\u673a\u547d\u4ee4\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>\u5982\u4f55\u4f7f\u7528golang\u5728kubernetes\u4e2d\u7684DaemonSet\u4e2d\u8fd0\u884c\u4e3b\u673a\u547d\u4ee4\uff1f<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-21 22:00:34<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728Golang\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300a\u5982\u4f55\u4f7f\u7528golang\u5728kubernetes\u4e2d\u7684DaemonSet\u4e2d\u8fd0\u884c\u4e3b\u673a\u547d\u4ee4\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u73b0\u5728\uff0c\u6211\u60f3\u76d1\u63a7\u96c6\u7fa4\u4e2d\u8282\u70b9\uff08\u5982docker\u3001kubelet\u3001cri&#8230;\uff09\u7684\u72b6\u6001\u3002\u6240\u4ee5\u6211\u5199\u4e86\u4e00\u4e2agolang\u7a0b\u5e8f\u5e76\u5c06\u5176\u90e8\u7f72\u4e3akubernetes\u4e2d\u7684daemonset\u3002 \u4f46\u6b63\u5982\u4f60\u6240\u77e5\uff0c\u5f53golang\u7a0b\u5e8f\u8fd0\u884cdaemonset\u4e2d\u7684\u547d\u4ee4\u6765\u83b7\u53d6host\u7684\u6b63\u786e\u7ed3\u679c\u65f6\uff0c\u5b83\u4e0d\u8d77\u4f5c\u7528\u3002 \u5982\u4f55\u5728daemonset\u4e2d\u8fd0\u884c\u201csystemctl status kubelet\/docker\u201d\uff0c\u4f46\u83b7\u53d6\u4e3b\u673a\u7684\u7ed3\u679c\uff1f<\/p>\n<p>\u6d4b\u8bd5\u4ee3\u7801\u559c\u6b22\uff1a<\/p>\n<pre>package main\n\nimport (\n    \"fmt\"\n    \"os\/exec\"\n    \"strings\"\n)\n\nfunc main() {\n    res,_:=execcommand(\"systemctl\",\"status\",\"kubelet\")\n    fmt.println(res)\n}\n\nfunc execcommand(command string, args ...string) (string, error) {\n\n    cmd := exec.command(command, args...)\n    out, err := cmd.output()\n    if err != nil {\n        return \"\", err\n    }\n\n    return strings.trimsuffix(string(out), \"\\n\"), nil\n}\n<\/pre>\n<p>\u6211\u53ea\u662f\u60f3\u5728daemonset\u4e2d\u8fd0\u884c\u547d\u4ee4\u6765\u83b7\u53d6\u4e3b\u673a\u7684\u201csystemctl status kubelet\/docker\u201d\u7684\u7ed3\u679c\uff0c\u800c\u4e0d\u662f\u5bb9\u5668\u3002\u4f46\u6211\u4e0d\u77e5\u9053\u5982\u4f55\u83b7\u53d6\u5b83\u3002<\/p>\n<p>\u6211\u8fd8\u5c1d\u8bd5\u5c06\u5176\u90e8\u7f72\u4e3a\u7279\u6743\u5bb9\u5668\uff1a<\/p>\n<pre>apiversion: apps\/v1\nkind: daemonset\nmetadata:\n  name: cluster-monitor\n  namespace: cluster-monitor\nspec:\n  selector:\n    matchlabels:\n      app: cluster-monitor\n  template:\n    metadata:\n      labels:\n        app: cluster-monitor\n    spec:\n      containers:\n        - name: cluster-monitor\n          image: monitor:v6\n          imagepullpolicy: ifnotpresent\n          securitycontext:\n            runasuser: 0\n            privileged: true\n      hostipc: true\n      hostnetwork: true\n      hostpid: true\n<\/pre>\n<p>\u6b64\u5916\uff0c\u6211\u8fd8\u5c1d\u8bd5\u5728 <code>entrypoint.sh<\/code> \u4e2d\u4f7f\u7528\u201cnsenter\u201d\u547d\u4ee4\u8bbe\u7f6e\u5bb9\u5668\u7684\u547d\u540d\u7a7a\u95f4\uff1a<\/p>\n<pre>#!\/bin\/sh\n\n## set host namespace\nnsenter -t 1 -m -u -i -n \/bin\/sh\n\n## run the program\n\/monitor -conf \/config.toml\n\n<\/pre>\n<p>\u4f46\u662f\u65e0\u8bba\u6211\u505a\u4ec0\u4e48\uff0c\u6211\u90fd\u65e0\u6cd5\u4f7f\u7528\u6211\u7684\u76d1\u89c6\u5668\u53c2\u6570\u4f5c\u4e3a kubernetes \u4e2d\u7684 daemonset \u6765\u83b7\u53d6\u5bb9\u5668\u4e2d\u4e3b\u673a\u7684\u72b6\u6001\u3002<\/p>\n<p>\u90a3\u4e48\u6211\u5e94\u8be5\u600e\u4e48\u505a\u624d\u80fd\u5c06 <code>golang<\/code> \u7a0b\u5e8f\u4e2d\u4e3b\u673a\u7684\u67d0\u4e9b\u547d\u4ee4\u7684\u7ed3\u679c\u4f5c\u4e3a daemonset \u83b7\u53d6\u3002 \u60a8\u7684\u56de\u7b54\u5bf9\u6211\u6765\u8bf4\u975e\u5e38\u91cd\u8981\uff0c\u975e\u5e38\u611f\u8c22\uff01<\/p>\n<p> <\/p>\n<h2>\u6b63\u786e\u7b54\u6848<\/h2>\n<p> <\/p>\n<p>\u60a8\u9700\u8981\u4f7f\u7528\u5377\u7684 <code>hostpath<\/code> \u5c5e\u6027\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p>\u8fd9\u5c06\u5141\u8bb8\u60a8\u5c06\u6587\u4ef6\/\u76ee\u5f55\u4ece\u4e3b\u673a\u6620\u5c04\u5230\u5bb9\u5668\u4e2d\uff0c\u60a8\u9700\u8981\u5c06 <code>\/var\/run\/docker.sock<\/code> \u4ece\u4e3b\u673a\u6620\u5c04\u5230\u5bb9\u5668\u4e2d\u3002<\/p>\n<pre>apiVersion: v1\nkind: Pod\nmetadata:\n  name: test-pd\nspec:\n  containers:\n  - image: k8s.gcr.io\/test-webserver\n    name: test-container\n    volumeMounts:\n    - mountPath:  \/var\/run\/docker.sock\n      name: docker-socket\n  volumes:\n  - name: docker-socket\n    hostPath:\n      path: \/var\/run\/docker.sock\n      type: File<\/pre>\n<p>\u60a8\u7684\u6620\u50cf\u8fd8\u9700\u8981\u5b89\u88c5 docker<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u4f7f\u7528golang\u5728kubernetes\u4e2d\u7684DaemonSet\u4e2d\u8fd0\u884c\u4e3b\u673a\u547d\u4ee4\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207356","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=207356"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207356\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}