{"id":10007066,"date":"2023-01-10T16:38:14","date_gmt":"2023-01-10T08:38:14","guid":{"rendered":"https:\/\/ityet.com\/?p=10007066"},"modified":"2023-01-10T16:38:14","modified_gmt":"2023-01-10T08:38:14","slug":"%e4%b8%80%e6%96%87%e8%af%bb%e6%87%82-kubernetes-%e5%ad%98%e5%82%a8%e8%ae%be%e8%ae%a1","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10007066","title":{"rendered":"\u4e00\u6587\u8bfb\u61c2 Kubernetes \u5b58\u50a8\u8bbe\u8ba1"},"content":{"rendered":"<p>\u5728 Docker \u7684\u8bbe\u8ba1\u4e2d\uff0c\u5bb9\u5668\u5185\u7684\u6587\u4ef6\u662f\u4e34\u65f6\u5b58\u653e\u7684\uff0c\u5e76\u4e14\u968f\u7740\u5bb9\u5668\u7684\u5220\u9664\uff0c\u5bb9\u5668\u5185\u90e8\u7684\u6570\u636e\u4e5f\u4f1a\u4e00\u540c\u88ab\u6e05\u7a7a\u3002\u4e0d\u8fc7\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5728 docker run \u542f\u52a8\u5bb9\u5668\u65f6\uff0c\u4f7f\u7528 &#8211;volume\/-v \u53c2\u6570\u6765\u6307\u5b9a\u6302\u8f7d\u5377\uff0c\u8fd9\u6837\u5c31\u80fd\u591f\u5c06\u5bb9\u5668\u5185\u90e8\u7684\u8def\u5f84\u6302\u8f7d\u5230\u4e3b\u673a\uff0c\u540e\u7eed\u5728\u5bb9\u5668\u5185\u90e8\u5b58\u653e\u6570\u636e\u65f6\u4f1a\u5c31\u88ab\u540c\u6b65\u5230\u88ab\u6302\u8f7d\u7684\u4e3b\u673a\u8def\u5f84\u4e2d\u3002\u8fd9\u6837\u505a\u53ef\u4ee5\u4fdd\u8bc1\u4fdd\u8bc1\u5373\u4fbf\u5bb9\u5668\u88ab\u5220\u9664\uff0c\u4fdd\u5b58\u5230\u4e3b\u673a\u8def\u5f84\u4e2d\u7684\u6570\u636e\u4e5f\u4ecd\u7136\u5b58\u5728\u3002<\/p>\n<p>\u4e0e Docker \u901a\u8fc7\u6302\u8f7d\u5377\u7684\u65b9\u5f0f\u5c31\u53ef\u4ee5\u89e3\u51b3\u6301\u4e45\u5316\u5b58\u50a8\u95ee\u9898\u4e0d\u540c\uff0cK8s \u5b58\u50a8\u8981\u9762\u4e34\u7684\u95ee\u9898\u8981\u590d\u6742\u7684\u591a\u3002\u56e0\u4e3a K8s \u901a\u5e38\u4f1a\u5728\u591a\u4e2a\u4e3b\u673a\u90e8\u7f72\u8282\u70b9\uff0c\u5982\u679c K8s \u7f16\u6392\u7684  Docker \u5bb9\u5668\u5d29\u6e83\uff0cK8s \u53ef\u80fd\u4f1a\u5728\u5176\u4ed6\u8282\u70b9\u4e0a\u91cd\u65b0\u62c9\u8d77\u5bb9\u5668\uff0c\u8fd9\u5c31\u5bfc\u81f4\u539f\u6765\u8282\u70b9\u4e3b\u673a\u4e0a\u6302\u8f7d\u7684\u5bb9\u5668\u76ee\u5f55\u65e0\u6cd5\u4f7f\u7528\u3002<\/p>\n<p>\u5f53\u7136\u4e5f\u662f\u6709\u529e\u6cd5\u89e3\u51b3 K8s \u5bb9\u5668\u5b58\u50a8\u7684\u8bf8\u591a\u9650\u5236\uff0c\u6bd4\u5982\u53ef\u4ee5\u5bf9\u5b58\u50a8\u8d44\u6e90\u505a\u4e00\u5c42\u62bd\u8c61\uff0c\u901a\u5e38\u5927\u5bb6\u5c06\u8fd9\u5c42\u62bd\u8c61\u79f0\u4e3a\u5377\uff08Volume\uff09\u3002<\/p>\n<p>K8s \u652f\u6301\u7684\u5377\u57fa\u672c\u4e0a\u53ef\u4ee5\u5206\u4e3a\u4e09\u7c7b\uff1a\u914d\u7f6e\u4fe1\u606f\u3001\u4e34\u65f6\u5b58\u50a8\u3001\u6301\u4e45\u5b58\u50a8\u3002<\/p>\n<h2>\u914d\u7f6e\u4fe1\u606f<\/h2>\n<p>\u65e0\u8bba\u4f55\u79cd\u7c7b\u578b\u7684\u5e94\u7528\uff0c\u90fd\u4f1a\u7528\u5230\u914d\u7f6e\u6587\u4ef6\u6216\u542f\u52a8\u53c2\u6570\u3002\u800c K8s \u5c06\u914d\u7f6e\u4fe1\u606f\u8fdb\u884c\u4e86\u62bd\u8c61\uff0c\u5b9a\u4e49\u6210\u4e86\u51e0\u79cd\u8d44\u6e90\uff0c\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e09\u79cd\uff1a<\/p>\n<ul>\n<li>ConfigMap<\/li>\n<li>Secret<\/li>\n<li>DownwardAPI<\/li>\n<\/ul>\n<h3>ConfigMap<\/h3>\n<p>ConfigMap \u5377\u901a\u5e38\u4ee5\u4e00\u4e2a\u6216\u591a\u4e2a key: value \u5f62\u5f0f\u5b58\u5728\uff0c\u4e3b\u8981\u7528\u6765\u4fdd\u5b58\u5e94\u7528\u7684\u914d\u7f6e\u6570\u636e\u3002\u5176\u4e2d value \u53ef\u4ee5\u662f\u5b57\u9762\u91cf\u6216\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<p>\u4e0d\u8fc7\uff0c\u56e0\u4e3aConfigMap \u5728\u8bbe\u8ba1\u4e0a\u4e0d\u662f\u7528\u6765\u4fdd\u5b58\u5927\u91cf\u6570\u636e\u7684\uff0c\u6240\u4ee5\u5728 ConfigMap \u4e2d\u4fdd\u5b58\u7684\u6570\u636e\u4e0d\u53ef\u8d85\u8fc7 1 MiB\uff08\u5146\u5b57\u8282\uff09\u3002<\/p>\n<p>ConfigMap \u6709\u4e24\u79cd\u521b\u5efa\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\u901a\u8fc7\u547d\u4ee4\u884c\u521b\u5efa<\/li>\n<li>\u901a\u8fc7 yaml \u6587\u4ef6\u521b\u5efa<\/li>\n<\/ul>\n<p><strong>\u901a\u8fc7\u547d\u4ee4\u884c\u521b\u5efa<\/strong><\/p>\n<p>\u5728\u521b\u5efa Configmap \u7684\u65f6\u5019\u53ef\u4ee5\u901a\u8fc7 &#8211;from-literal \u53c2\u6570\u6765\u6307\u5b9a key: value\uff0c\u4ee5\u4e0b\u793a\u4f8b\u4e2d foo=bar \u5373\u4e3a\u5b57\u9762\u91cf\u5f62\u5f0f\uff0cbar=bar.txt \u4e3a\u914d\u7f6e\u6587\u4ef6\u5f62\u5f0f\u3002<\/p>\n<pre><code>$ kubectl create configmap c1 --from-literal=foo=bar --from-literal=bar=bar.txt<\/code><\/pre>\n<p>bar.txt \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>baz<\/code><\/pre>\n<p>\u901a\u8fc7 kubectl describe \u547d\u4ee4\u67e5\u770b\u65b0\u521b\u5efa\u7684\u540d\u79f0\u4e3a c1 \u7684\u8fd9\u4e2a Configmap \u8d44\u6e90\u5185\u5bb9\u3002<\/p>\n<pre><code>$ kubectl describe configmap c1\nName:         c1\nNamespace:    default\nLabels:       &lt;none&gt;\nAnnotations:  &lt;none&gt;\n\nData\n====\nbar:\n----\nbaz\nfoo:\n----\nbar\nEvents:  &lt;none&gt;<\/code><\/pre>\n<p><strong>\u901a\u8fc7 yaml \u6587\u4ef6\u521b\u5efa<\/strong><\/p>\n<p>\u521b\u5efa configmap-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>kind: ConfigMap\napiVersion: v1\nmetadata:\n  name: c2\n  namespace: default\ndata:\n  foo: bar\n  bar: baz<\/code><\/pre>\n<p>\u901a\u8fc7 kubectl apply \u547d\u4ee4\u5e94\u7528\u8fd9\u4e2a\u6587\u4ef6\u3002<\/p>\n<pre><code>$ kubectl apply -f configmap-demo.yaml\n\n$ kubectl get configmap c2\nNAME   DATA   AGE\nc2     2      11s\n\n$ kubectl describe configmap c2\nName:         c2\nNamespace:    default\nLabels:       &lt;none&gt;\nAnnotations:  &lt;none&gt;\n\nData\n====\nfoo:\n----\nbar\nbar:\n----\nbaz\nEvents:  &lt;none&gt;<\/code><\/pre>\n<p>\u5f97\u5230\u7684\u7ed3\u679c\u8ddf\u901a\u8fc7\u547d\u4ee4\u884c\u65b9\u5f0f\u521b\u5efa\u7684 Configmap \u6ca1\u4ec0\u4e48\u4e24\u6837\u3002<\/p>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n<p>\u5b8c\u6210 Configmap \u521b\u5efa\u540e\uff0c\u6765\u770b\u4e0b\u5982\u4f55\u4f7f\u7528\u3002<\/p>\n<p>\u521b\u5efa\u597d\u7684Configmap \u6709\u4e24\u79cd\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u5c06 Configmap \u6ce8\u5165\u5230\u5bb9\u5668\u5185\u90e8<\/li>\n<li>\u901a\u8fc7\u5377\u6302\u8f7d\u7684\u65b9\u5f0f\u76f4\u63a5\u5c06 Configmap \u4ee5\u6587\u4ef6\u5f62\u5f0f\u6302\u8f7d\u5230\u5bb9\u5668\u3002<\/li>\n<\/ul>\n<p><strong>\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u65b9\u5f0f\u5f15\u7528<\/strong><\/p>\n<p>\u521b\u5efa use-configmap-env-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: &quot;use-configmap-env&quot;\n  namespace: default\nspec:\n  containers:\n    - name: use-configmap-env\n      image: &quot;alpine&quot;\n      # \u4e00\u6b21\u5f15\u7528\u5355\u4e2a\u503c\n      env:\n        - name: FOO\n          valueFrom:\n            configMapKeyRef:\n              name: c2\n              key: foo\n      # \u4e00\u6b21\u5f15\u7528\u6240\u6709\u503c\n      envFrom:\n        - prefix: CONFIG_  # \u914d\u7f6e\u5f15\u7528\u524d\u7f00\n          configMapRef:\n            name: c2\n      command: [&quot;echo&quot;, &quot;$(FOO)&quot;, &quot;$(CONFIG_bar)&quot;]<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a use-configmap-env \u7684 Pod\uff0cPod \u7684\u5bb9\u5668\u5c06\u4f7f\u7528\u4e24\u79cd\u65b9\u5f0f\u5f15\u7528 Configmap \u7684\u5185\u5bb9\u3002<\/p>\n<p>\u7b2c\u4e00\u79cd\u662f\u6307\u5b9a spec.containers.env\uff0c\u5b83\u53ef\u4ee5\u4e3a\u5bb9\u5668\u5f15\u7528\u4e00\u4e2a Configmap \u7684 key: value \u5bf9\u3002\u5176\u4e2dvalueFrom. configMapKeyRef \u8868\u660e\u6211\u4eec\u8981\u5f15\u7528 Configmap \uff0cConfigmap \u7684\u540d\u79f0\u4e3a c2 \uff0c\u5f15\u7528\u7684 key \u4e3a foo \u3002<\/p>\n<p>\u7b2c\u4e8c\u79cd\u662f\u6307\u5b9a spec.containers.envFrom \uff0c\u53ea\u9700\u8981\u901a\u8fc7 configMapRef.name \u6307\u5b9a Configmap \u7684\u540d\u79f0\uff0c\u5b83\u5c31\u53ef\u4ee5\u4e00\u6b21\u5c06 Configmap \u4e2d\u7684\u6240\u6709 key: value \u4f20\u9012\u7ed9\u5bb9\u5668\u3002\u5176\u4e2d prefix \u53ef\u4ee5\u7ed9\u5f15\u7528\u7684 key \u524d\u9762\u589e\u52a0\u7edf\u4e00\u524d\u7f00\u3002<\/p>\n<p>Pod \u7684\u5bb9\u5668\u542f\u52a8\u547d\u4ee4\u4e3a echo $(FOO) $(CONFIG_bar) \uff0c\u53ef\u4ee5\u5206\u522b\u6253\u5370\u901a\u8fc7 env \u548c envFrom \u4e24\u79cd\u65b9\u5f0f\u5f15\u7528\u7684 Configmap \u7684\u5185\u5bb9\u3002<\/p>\n<pre><code># \u521b\u5efa Pod\n$ kubectl apply -f use-configmap-env-demo.yaml\n# \u901a\u8fc7\u67e5\u770b Pod \u65e5\u5fd7\u6765\u89c2\u5bdf\u5bb9\u5668\u5185\u90e8\u5f15\u7528 Configmap \u7ed3\u679c\n$ kubectl logs use-configmap-env\nbar baz<\/code><\/pre>\n<p>\u7ed3\u679c\u8868\u660e\uff0c\u5bb9\u5668\u5185\u90e8\u53ef\u4ee5\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u7684\u65b9\u5f0f\u5f15\u7528\u5230 Configmap \u7684\u5185\u5bb9\u3002<\/p>\n<p>\u901a\u8fc7\u5377\u6302\u8f7d\u65b9\u5f0f\u5f15\u7528<\/p>\n<p>\u521b\u5efa use-configmap-volume-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: &quot;use-configmap-volume&quot;\n  namespace: default\nspec:\n  containers:\n    - name: use-configmap-volume\n      image: &quot;alpine&quot;\n      command: [&quot;sleep&quot;, &quot;3600&quot;]\n      volumeMounts:\n        - name: configmap-volume\n          mountPath: \/usr\/share\/tmp  # \u5bb9\u5668\u6302\u8f7d\u76ee\u5f55\n  volumes:\n    - name: configmap-volume\n      configMap:\n        name: c2<\/code><\/pre>\n<p>\u8fd9\u91cc\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a use-configmap-volume \u7684 Pod\u3002\u901a\u8fc7 spec.containers.volumeMounts \u6307\u5b9a\u5bb9\u5668\u6302\u8f7d\uff0cname \u6307\u5b9a\u6302\u8f7d\u7684\u5377\u540d\uff0cmountPath \u6307\u5b9a\u5bb9\u5668\u5185\u90e8\u6302\u8f7d\u8def\u5f84\uff08\u4e5f\u5c31\u662f\u5c06 Configmap \u6302\u8f7d\u5230\u5bb9\u5668\u5185\u90e8\u7684\u6307\u5b9a\u76ee\u5f55\u4e0b\uff09\u3002spec.volumes \u58f0\u660e\u4e00\u4e2a\u5377\uff0c\u800cconfigMap.name \u8868\u660e\u4e86\u8fd9\u4e2a\u5377\u8981\u5f15\u7528\u7684 Configmap \u540d\u79f0\u3002<\/p>\n<p>\u7136\u540e\u53ef\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u521b\u5efa Pod \u5e76\u9a8c\u8bc1\u5bb9\u5668\u5185\u90e8\u80fd\u5426\u5f15\u7528\u5230 Configmap\u3002<\/p>\n<pre><code># \u521b\u5efa Pod\n$ kubectl apply -f use-configmap-volume-demo.yaml\n# \u8fdb\u5165 Pod \u5bb9\u5668\u5185\u90e8\n$ kubectl exec -it use-configmap-volume -- sh\n# \u8fdb\u5165\u5bb9\u5668\u6302\u8f7d\u76ee\u5f55\n\/ # cd \/usr\/share\/tmp\/\n# \u67e5\u770b\u6302\u8f7d\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\n\/usr\/share\/tmp # ls\nbar  foo\n# \u67e5\u770b\u6587\u4ef6\u5185\u5bb9\n\/usr\/share\/tmp # cat foo\nbar\n\/usr\/share\/tmp # cat bar\nbaz<\/code><\/pre>\n<p>\u521b\u5efa\u5b8c\u6210\u540e\uff0c\u901a\u8fc7 kubectl exec \u547d\u4ee4\u53ef\u4ee5\u8fdb\u5165\u5bb9\u5668\u5185\u90e8\u3002\u67e5\u770b\u5bb9\u5668 \/usr\/share\/tmp\/ \u76ee\u5f55\uff0c\u53ef\u4ee5\u770b\u5230\u4e24\u4e2a\u4ee5 Configmap \u4e2d key \u4e3a\u540d\u79f0\u7684\u6587\u672c\u6587\u4ef6\uff08foo \u3001bar\uff09\uff0c key \u6240\u5bf9\u5e94\u7684 value \u5185\u5bb9\u5373\u4e3a\u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u4e24\u79cd\u5c06 Configmap \u7684\u5185\u5bb9\u6ce8\u5165\u5230\u5bb9\u5668\u5185\u90e8\u7684\u65b9\u5f0f\u3002\u5bb9\u5668\u5185\u90e8\u7684\u5e94\u7528\u5219\u53ef\u4ee5\u5206\u522b\u901a\u8fc7\u8bfb\u53d6\u73af\u5883\u53d8\u91cf\u3001\u6587\u4ef6\u5185\u5bb9\u7684\u65b9\u5f0f\u4f7f\u7528\u914d\u7f6e\u4fe1\u606f\u3002<\/p>\n<h3>Secret<\/h3>\n<p>\u719f\u6089\u4e86 Configmap \u7684\u7528\u6cd5\uff0c\u63a5\u4e0b\u6765\u770b\u4e0b Secret \u7684\u4f7f\u7528\u3002Secret \u5377\u7528\u6765\u7ed9 Pod \u4f20\u9012\u654f\u611f\u4fe1\u606f\uff0c\u4f8b\u5982\u5bc6\u7801\u3001SSH \u5bc6\u94a5\u7b49\u3002\u56e0\u4e3a\u867d\u7136Secret \u4e0e ConfigMap \u975e\u5e38\u7c7b\u4f3c\uff0c\u4f46\u662f\u5b83\u4f1a\u5bf9\u5b58\u50a8\u7684\u6570\u636e\u8fdb\u884c base64 \u7f16\u7801\u3002<\/p>\n<p>Secret \u540c\u6837\u6709\u4e24\u79cd\u521b\u5efa\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\u901a\u8fc7\u547d\u4ee4\u884c\u521b\u5efa<\/li>\n<li>\u901a\u8fc7 yaml \u6587\u4ef6\u521b\u5efa<\/li>\n<\/ul>\n<p><strong>\u901a\u8fc7\u547d\u4ee4\u884c\u521b\u5efa<\/strong><\/p>\n<p>Secret \u9664\u4e86\u901a\u8fc7 &#8211;from-literal \u53c2\u6570\u6765\u6307\u5b9a key: value\uff0c\u8fd8\u6709\u53e6\u4e00\u79cd\u65b9\u5f0f\u3002\u5373\u901a\u8fc7 &#8211;form-file \u53c2\u6570\u76f4\u63a5\u4ece\u6587\u4ef6\u52a0\u8f7d\u914d\u7f6e\uff0c\u6587\u4ef6\u540d\u5373\u4e3a key\uff0c\u6587\u4ef6\u5185\u5bb9\u4f5c\u4e3a value\u3002<\/p>\n<pre><code># generic \u53c2\u6570\u5bf9\u5e94 Opaque \u7c7b\u578b\uff0c\u65e2\u7528\u6237\u5b9a\u4e49\u7684\u4efb\u610f\u6570\u636e\n$ kubectl create secret generic s1 --from-file=foo.txt<\/code><\/pre>\n<p>foo.txt \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>foo=bar\nbar=baz<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\u4e0e Configmap \u4e0d\u540c\uff0c\u521b\u5efa Secret \u9700\u8981\u6307\u660e\u7c7b\u578b\u3002\u4e0a\u9762\u7684\u793a\u4f8b\u4e3a\u547d\u4ee4\u901a\u8fc7\u6307\u5b9a generic \u53c2\u6570\u6765\u521b\u5efa\u7c7b\u578b\u4e3a Opaque \u7684 Secret \uff0c\u8fd9\u4e5f\u662f Secret \u9ed8\u8ba4\u7c7b\u578b\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u9664\u53bb\u9ed8\u8ba4\u7c7b\u578b\uff0cSecret \u8fd8\u652f\u6301\u5176\u4ed6\u7c7b\u578b\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b98\u65b9\u6587\u6863\u67e5\u770b\u3002\u4e0d\u8fc7\u521d\u671f\u5b66\u4e60\u9636\u6bb5\u53ea\u4f7f\u7528\u9ed8\u8ba4\u7c7b\u578b\u5373\u53ef\uff0c\u901a\u8fc7\u9ed8\u8ba4\u7c7b\u578b\u5c31\u80fd\u591f\u5b9e\u73b0\u5176\u4ed6\u51e0\u79cd\u7c7b\u578b\u7684\u529f\u80fd<\/p>\n<pre><code>$ kubectl describe secret s1\nName:         s1\nNamespace:    default\nLabels:       &lt;none&gt;\nAnnotations:  &lt;none&gt;\n\nType:  Opaque\n\nData\n====\nfoo.txt:  16 bytes<\/code><\/pre>\n<p>\u53e6\u5916\u4e00\u70b9\u4e0e Configmap \u4e0d\u540c\u7684\u662f\uff0cSecret \u4ec5\u5c55\u793a value \u7684\u5b57\u8282\u5927\u5c0f\uff0c\u800c\u4e0d\u76f4\u63a5\u5c55\u793a\u6570\u636e\uff0c\u8fd9\u662f\u4e3a\u4e86\u4fdd\u5b58\u5bc6\u6587\uff0c\u4e5f\u662fSecret \u540d\u79f0\u7684\u542b\u4e49\u3002<\/p>\n<p><strong>\u901a\u8fc7 yaml \u6587\u4ef6\u521b\u5efa<\/strong><\/p>\n<p>\u521b\u5efa secret-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: Secret\nmetadata:\n  name: s2\n  namespace: default\ntype: Opaque  # \u9ed8\u8ba4\u7c7b\u578b\ndata:\n  user: cm9vdAo=\n  password: MTIzNDU2Cg==<\/code><\/pre>\n<p>\u901a\u8fc7 kubectl apply \u547d\u4ee4\u5e94\u7528\u8fd9\u4e2a\u6587\u4ef6\u3002<\/p>\n<pre><code>\n$ kubectl apply -f secret-demo.yaml\n\n$ kubectl get secret s2\nNAME   TYPE     DATA   AGE\ns2     Opaque   2      59s\n\n$ kubectl describe secret s2\nName:         s2\nNamespace:    default\nLabels:       &lt;none&gt;\nAnnotations:  &lt;none&gt;\n\nType:  Opaque\n\nData\n====\npassword:  7 bytes\nuser:      5 bytes<\/code><\/pre>\n<p>\u540c\u6837\u80fd\u591f\u6b63\u786e\u521b\u5efa\u51fa Secret \u8d44\u6e90\u3002\u4f46\u662f\u53ef\u4ee5\u770b\u5230\u901a\u8fc7 yaml \u6587\u4ef6\u521b\u5efa Secret \u65f6\uff0c\u6307\u5b9a\u7684 data \u5185\u5bb9\u5fc5\u987b\u7ecf\u8fc7 base64 \u7f16\u7801\uff0c\u6bd4\u5982\u6211\u4eec\u6307\u5b9a\u7684 user \u548c password \u90fd\u662f\u7f16\u7801\u540e\u7684\u7ed3\u679c\u3002<\/p>\n<pre><code>data:\n  user: cm9vdAo=\n  password: MTIzNDU2Cg==<\/code><\/pre>\n<p>\u9664\u6b64\u5916\u4e5f\u53ef\u4ee5\u4f7f\u7528\u539f\u59cb\u5b57\u7b26\u4e32\u65b9\u5f0f\uff0c\u8fd9\u4e24\u79cd\u65b9\u5f0f\u662f\u7b49\u4ef7\uff0c\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>data:\n  stringData:\n   user: root\n   password: &quot;123456&quot;<\/code><\/pre>\n<p>\u76f8\u5bf9\u800c\u8a00\uff0c\u6211\u66f4\u63a8\u8350\u4f7f\u7528 base64 \u7f16\u7801\u7684\u65b9\u5f0f\u3002<\/p>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n<p>\u540c Configmap \u4f7f\u7528\u65b9\u5f0f\u4e00\u6837\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u6216\u5377\u6302\u8f7d\u7684\u65b9\u5f0f\u6765\u4f7f\u7528 Secret \u3002\u4ee5\u5377\u6302\u8f7d\u65b9\u5f0f\u4e3a\u4f8b\u3002\u9996\u5148\u521b\u5efa use-secret-volume-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: &quot;use-secret-volume-demo&quot;\n  namespace: default\nspec:\n  containers:\n    - name: use-secret-volume-demo\n      image: &quot;alpine&quot;\n      command: [&quot;sleep&quot;, &quot;3600&quot;]\n      volumeMounts:\n        - name: secret-volume\n          mountPath: \/usr\/share\/tmp # \u5bb9\u5668\u6302\u8f7d\u76ee\u5f55\n  volumes:\n    - name: secret-volume\n      secret:\n        secretName: s2<\/code><\/pre>\n<p>\u5373\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a use-secret-volume-demo \u7684 Pod\uff0c\u800c Pod \u7684\u5bb9\u5668\u901a\u8fc7\u5377\u6302\u8f7d\u65b9\u5f0f\u5f15\u7528 Secret \u7684\u5185\u5bb9\u3002<\/p>\n<pre><code># \u521b\u5efa Pod\n$ kubectl apply -f use-secret-volume-demo.yaml\n\n# \u8fdb\u5165 Pod \u5bb9\u5668\u5185\u90e8\n$ kubectl exec -it use-secret-volume-demo -- sh\n# \u8fdb\u5165\u5bb9\u5668\u6302\u8f7d\u76ee\u5f55\n\/ # cd \/usr\/share\/tmp\/\n# \u67e5\u770b\u6302\u8f7d\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\n\/usr\/share\/tmp # ls\npassword  user\n# \u67e5\u770b\u6587\u4ef6\u5185\u5bb9\n\/usr\/share\/tmp # cat password \n123456\n\/usr\/share\/tmp # cat user \nroot<\/code><\/pre>\n<p>\u53ef\u4ee5\u53d1\u73b0\u88ab\u6302\u8f7d\u5230\u5bb9\u5668\u5185\u90e8\u4ee5\u540e\uff0cSecret \u7684\u5185\u5bb9\u5c06\u53d8\u6210\u660e\u6587\u5b58\u50a8\u3002\u5bb9\u5668\u5185\u90e8\u5e94\u7528\u53ef\u4ee5\u540c\u4f7f\u7528 Configmap \u4e00\u6837\u6765\u4f7f\u7528 Secret \u3002<\/p>\n<p>\u4f5c\u4e3a\u53ef\u4ee5\u5b58\u50a8\u914d\u7f6e\u4fe1\u606f\u7684 Configmap \u548c Secret \uff0c Configmap \u901a\u5e38\u5b58\u653e\u666e\u901a\u914d\u7f6e\uff0c Secret \u5219\u5b58\u653e\u654f\u611f\u914d\u7f6e\u3002<\/p>\n<p>\u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0c\u4f7f\u7528\u73af\u5883\u53d8\u91cf\u65b9\u5f0f\u5f15\u7528 Configmap \u6216 Secret \uff0c\u5f53 Configmap \u6216 Secret \u5185\u5bb9\u53d8\u66f4\u65f6\uff0c\u5bb9\u5668\u5185\u90e8\u5f15\u7528\u7684\u5185\u5bb9\u4e0d\u4f1a\u81ea\u52a8\u66f4\u65b0\uff1b\u4f7f\u7528\u5377\u6302\u8f7d\u65b9\u5f0f\u5f15\u7528 Configmap \u6216 Secret \uff0c\u5f53 Configmap \u6216 Secret \u5185\u5bb9\u53d8\u66f4\u65f6\uff0c\u5bb9\u5668\u5185\u90e8\u5f15\u7528\u7684\u5185\u5bb9\u4f1a\u81ea\u52a8\u66f4\u65b0\u3002\u5982\u679c\u5bb9\u5668\u5185\u90e8\u5e94\u7528\u652f\u6301\u914d\u7f6e\u6587\u4ef6\u70ed\u52a0\u8f7d\uff0c\u90a3\u4e48\u901a\u8fc7\u5377\u6302\u8f7d\u5bf9\u7684\u65b9\u5f0f\u5f15\u7528 Configmap \u6216 Secret \u5185\u5bb9\u5c06\u662f\u63a8\u8350\u65b9\u5f0f\u3002<\/p>\n<h3>DownwardAPI<\/h3>\n<p>DownwardAPI \u53ef\u4ee5\u5c06 Pod \u5bf9\u8c61\u81ea\u8eab\u7684\u4fe1\u606f\u6ce8\u5165\u5230 Pod \u6240\u7ba1\u7406\u7684\u5bb9\u5668\u5185\u90e8\u3002<\/p>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n<p>\u521b\u5efa downwardapi-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: downwardapi-volume-demo\n  labels:\n    app: downwardapi-volume-demo\n  annotations:\n    foo: bar\nspec:\n  containers:\n    - name: downwardapi-volume-demo\n      image: alpine\n      command: [&quot;sleep&quot;, &quot;3600&quot;]\n      volumeMounts:\n        - name: podinfo\n          mountPath: \/etc\/podinfo\n  volumes:\n    - name: podinfo\n      downwardAPI:\n        items:\n          # \u6307\u5b9a\u5f15\u7528\u7684 labels\n          - path: &quot;labels&quot;\n            fieldRef:\n              fieldPath: metadata.labels\n          # \u6307\u5b9a\u5f15\u7528\u7684 annotations\n          - path: &quot;annotations&quot;\n            fieldRef:\n              fieldPath: metadata.annotations<\/code><\/pre>\n<pre><code># \u521b\u5efa Pod\n$ kubectl apply -f downwardapi-demo.yaml\npod\/downwardapi-volume-demo created\n\n# \u8fdb\u5165 Pod \u5bb9\u5668\u5185\u90e8\n$ kubectl exec -it downwardapi-volume-demo -- sh\n# \u8fdb\u5165\u5bb9\u5668\u6302\u8f7d\u76ee\u5f55\n\/ # cd \/etc\/podinfo\/\n# \u67e5\u770b\u6302\u8f7d\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\n\/etc\/podinfo # ls\nannotations  labels\n# \u67e5\u770b\u6587\u4ef6\u5185\u5bb9\n\/etc\/podinfo # cat annotations \nfoo=&quot;bar&quot;\nkubectl.kubernetes.io\/last-applied-configuration=&quot;{\/&quot;apiVersion\/&quot;:\/&quot;v1\/&quot;,\/&quot;kind\/&quot;:\/&quot;Pod\/&quot;,\/&quot;metadata\/&quot;:{\/&quot;annotations\/&quot;:{\/&quot;foo\/&quot;:\/&quot;bar\/&quot;},\/&quot;labels\/&quot;:{\/&quot;app\/&quot;:\/&quot;downwardapi-volume-demo\/&quot;},\/&quot;name\/&quot;:\/&quot;downwardapi-volume-demo\/&quot;,\/&quot;namespace\/&quot;:\/&quot;default\/&quot;},\/&quot;spec\/&quot;:{\/&quot;containers\/&quot;:[{\/&quot;command\/&quot;:[\/&quot;sleep\/&quot;,\/&quot;3600\/&quot;],\/&quot;image\/&quot;:\/&quot;alpine\/&quot;,\/&quot;name\/&quot;:\/&quot;downwardapi-volume-demo\/&quot;,\/&quot;volumeMounts\/&quot;:[{\/&quot;mountPath\/&quot;:\/&quot;\/etc\/podinfo\/&quot;,\/&quot;name\/&quot;:\/&quot;podinfo\/&quot;}]}],\/&quot;volumes\/&quot;:[{\/&quot;downwardAPI\/&quot;:{\/&quot;items\/&quot;:[{\/&quot;fieldRef\/&quot;:{\/&quot;fieldPath\/&quot;:\/&quot;metadata.labels\/&quot;},\/&quot;path\/&quot;:\/&quot;labels\/&quot;},{\/&quot;fieldRef\/&quot;:{\/&quot;fieldPath\/&quot;:\/&quot;metadata.annotations\/&quot;},\/&quot;path\/&quot;:\/&quot;annotations\/&quot;}]},\/&quot;name\/&quot;:\/&quot;podinfo\/&quot;}]}}\/n&quot;\nkubernetes.io\/config.seen=&quot;2022-03-12T13:06:50.766902000Z&quot;\n\/etc\/podinfo # cat labels\napp=&quot;downwardapi-volume-demo&quot;<\/code><\/pre>\n<p>\u4e0d\u96be\u53d1\u73b0\uff0cDownwardAPI \u7684\u4f7f\u7528\u65b9\u5f0f\u540c Configmap \u548c Secret \u4e00\u6837\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7\u5377\u6302\u8f7d\u65b9\u5f0f\u6302\u8f7d\u5230\u5bb9\u5668\u5185\u90e8\u4ee5\u540e\uff0c\u5728\u5bb9\u5668\u6302\u8f7d\u7684\u76ee\u5f55\u4e0b\u751f\u6210\u5bf9\u5e94\u6587\u4ef6\uff0c\u7528\u6765\u5b58\u50a8 key: value\u3002\u4e0d\u540c\u7684\u662f \uff0c\u56e0\u4e3aDownwardAPI\u80fd\u5f15\u7528\u7684\u5185\u5bb9\u5df2\u7ecf\u90fd\u5728\u5f53\u524d yaml \u6587\u4ef6\u4e2d\u5b9a\u4e49\u597d\u4e86\uff0c\u6240\u4ee5DownwardAPI \u4e0d\u9700\u8981\u9884\u5148\u5b9a\u4e49\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u3002<\/p>\n<h3>\u5c0f\u7ed3<\/h3>\n<p>ConfigMap \u3001Secret \u3001DownwardAPI \u8fd9\u4e09\u79cd Volume \u5b58\u5728\u7684\u610f\u4e49\u4e0d\u662f\u4e3a\u4e86\u4fdd\u5b58\u5bb9\u5668\u4e2d\u7684\u6570\u636e\uff0c\u800c\u662f\u4e3a\u4e86\u7ed9\u5bb9\u5668\u4f20\u9012\u9884\u5148\u5b9a\u4e49\u597d\u7684\u6570\u636e\u3002<\/p>\n<h2>\u4e34\u65f6\u5377<\/h2>\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u8981\u5173\u6ce8\u7684\u662f\u4e34\u65f6\u5377\uff0c\u5373\u4e34\u65f6\u5b58\u50a8\u3002K8s \u652f\u6301\u7684\u4e34\u65f6\u5b58\u50a8\u4e2d\u6700\u5e38\u7528\u7684\u5c31\u662f\u5982\u4e0b\u4e24\u79cd\uff1a<\/p>\n<ul>\n<li>EmptyDir<\/li>\n<li>HostPath<\/li>\n<\/ul>\n<p>\u4e34\u65f6\u5b58\u50a8\u5377\u4f1a\u9075\u4ece Pod \u7684\u751f\u547d\u5468\u671f\uff0c\u4e0e Pod \u4e00\u8d77\u521b\u5efa\u548c\u5220\u9664\u3002<\/p>\n<h3>EmptyDir<\/h3>\n<p>\u5148\u6765\u770b emptyDir \u5982\u4f55\u4f7f\u7528\u3002EmptyDir \u76f8\u5f53\u4e8e\u901a\u8fc7 &#8211;volume\/-v \u6302\u8f7d\u65f6\u7684\u9690\u5f0f Volume \u5f62\u5f0f\u4f7f\u7528 Docker\u3002K8s \u4f1a\u5728\u5bbf\u4e3b\u673a\u4e0a\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u76ee\u5f55\uff0c\u88ab\u6302\u8f7d\u5230\u5bb9\u5668\u6240\u58f0\u660e\u7684 mountPath \u76ee\u5f55\u4e0a\uff0c\u5373\u4e0d\u663e\u5f0f\u7684\u58f0\u660e\u5728\u5bbf\u4e3b\u673a\u4e0a\u7684\u76ee\u5f55\u3002<\/p>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n<p>\u521b\u5efa emptydir-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: &quot;emptydir-nginx-pod&quot;\n  namespace: default\n  labels:\n    app: &quot;emptydir-nginx-pod&quot;\nspec:\n  containers:\n    - name: html-generator\n      image: &quot;alpine:latest&quot;\n      command: [&quot;sh&quot;, &quot;-c&quot;]\n      args:\n       - while true; do\n          date &gt; \/usr\/share\/index.html;\n          sleep 1;\n         done\n      volumeMounts:\n        - name: html\n          mountPath: \/usr\/share\n    - name: nginx\n      image: &quot;nginx:latest&quot;\n      ports:\n        - containerPort: 80\n          name: http\n      volumeMounts:\n        - name: html\n          # nginx \u5bb9\u5668 index.html \u6587\u4ef6\u6240\u5728\u76ee\u5f55\n          mountPath: \/usr\/share\/nginx\/html\n          readOnly: true\n  volumes:\n    - name: html\n      emptyDir: {}<\/code><\/pre>\n<p>\u8fd9\u91cc\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a emptydir-nginx-pod \u7684 Pod\uff0c\u5b83\u5305\u542b\u4e24\u4e2a\u5bb9\u5668 html-generator \u548c nginx \u3002html-generator \u7528\u6765\u4e0d\u505c\u7684\u751f\u6210 html \u6587\u4ef6\uff0cnginx \u5219\u662f\u7528\u6765\u5c55\u793a html-generator \u751f\u6210\u7684 index.html \u6587\u4ef6\u7684 Web \u670d\u52a1\u3002<\/p>\n<p>\u5177\u4f53\u6d41\u7a0b\u4e3a\uff0chtml-generator \u4e0d\u505c\u7684\u5c06\u5f53\u524d\u65f6\u95f4\u5199\u5165\u5230 \/usr\/share\/index.html \u4e0b\uff0c\u5e76\u5c06 \/usr\/share \u76ee\u5f55\u6302\u8f7d\u5230\u540d\u4e3a html \u7684\u5377\u4e2d\uff0c\u800c nginx \u5bb9\u5668\u5219\u5c06 \/usr\/share\/nginx\/html \u76ee\u5f55\u6302\u8f7d\u5230\u540d\u4e3a html \u7684\u5377\u4e2d\uff0c\u8fd9\u6837\u4e24\u4e2a\u5bb9\u5668\u901a\u8fc7\u540c\u4e00\u4e2a\u5377 html \u6302\u8f7d\u5230\u4e86\u4e00\u8d77\u3002<\/p>\n<p>\u73b0\u5728\u901a\u8fc7 kubectl apply \u547d\u4ee4\u5e94\u7528\u8fd9\u4e2a\u6587\u4ef6\uff1a<\/p>\n<pre><code># \u521b\u5efa Pod\n$ kubectl apply -f emptydir-demo.yaml\npod\/emptydir-nginx-pod created\n\n# \u8fdb\u5165 Pod \u5bb9\u5668\u5185\u90e8\n$ kubectl exec -it pod\/emptydir-nginx-pod -- sh\n# \u67e5\u770b\u7cfb\u7edf\u65f6\u533a\n\/ # curl 127.0.0.1\nSun Mar 13 08:40:01 UTC 2022\n\/ # curl 127.0.0.1\nSun Mar 13 08:40:04 UTC 2022<\/code><\/pre>\n<p>\u6839\u636e nginx \u5bb9\u5668\u5185\u90e8 curl 127.0.0.1 \u547d\u4ee4\u8f93\u51fa\u7ed3\u679c\u53ef\u4ee5\u53d1\u73b0\uff0cnginx \u5bb9\u5668 \/usr\/share\/nginx\/html\/indedx.html \u6587\u4ef6\u5185\u5bb9\u5373\u4e3a html-generator \u5bb9\u5668 \/usr\/share\/index.html \u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n<p>\u80fd\u591f\u5b9e\u73b0\u6b64\u6548\u679c\u7684\u539f\u7406\u662f\uff0c\u5f53\u6211\u4eec\u58f0\u660e\u5377\u7c7b\u578b\u4e3a emptyDir: {} \u540e\uff0cK8s \u4f1a\u81ea\u52a8\u5728\u4e3b\u673a\u76ee\u5f55\u4e0a\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u76ee\u5f55\u3002\u7136\u540e\u5c06 html-generator \u5bb9\u5668 \/usr\/share\/ \u76ee\u5f55\u548c nginx \u5bb9\u5668 \/usr\/share\/nginx\/html\/ \u540c\u65f6\u6302\u8f7d\u5230\u8fd9\u4e2a\u4e34\u65f6\u76ee\u5f55\u4e0a\u3002\u8fd9\u6837\u4e24\u4e2a\u5bb9\u5668\u7684\u76ee\u5f55\u5c31\u80fd\u591f\u5b9e\u73b0\u6570\u636e\u540c\u6b65\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5bb9\u5668\u5d29\u6e83\u5e76\u4e0d\u4f1a\u5bfc\u81f4 Pod \u88ab\u4ece\u8282\u70b9\u4e0a\u79fb\u9664\uff0c\u56e0\u6b64\u5bb9\u5668\u5d29\u6e83\u671f\u95f4 emptyDir \u5377\u4e2d\u7684\u6570\u636e\u662f\u5b89\u5168\u7684\u3002\u53e6\u5916\uff0cemptyDir.medium \u9664\u4e86\u53ef\u4ee5\u8bbe\u6210 {}\uff0c\u8fd8\u53ef\u4ee5\u8bbe\u6210 Memory \u8868\u793a\u5185\u5b58\u6302\u8f7d\u3002<\/p>\n<h3>HostPath<\/h3>\n<p>\u4e0e emptyDir \u4e0d\u540c\uff0chostPath \u5377\u80fd\u5c06\u4e3b\u673a\u8282\u70b9\u6587\u4ef6\u7cfb\u7edf\u4e0a\u7684\u6587\u4ef6\u6216\u76ee\u5f55\u6302\u8f7d\u5230\u6307\u5b9a\u7684 Pod \u4e2d\u3002\u5e76\u4e14\u5f53 Pod \u5220\u9664\u65f6\uff0c\u4e0e\u4e4b\u7ed1\u5b9a\u7684 hostPath \u5e76\u4e0d\u4f1a\u968f\u4e4b\u5220\u9664\u3002\u65b0\u521b\u5efa\u7684 Pod\u6302\u8f7d\u5230\u4e0a\u4e00\u4e2a Pod \u4f7f\u7528\u8fc7\u7684 hostPath\u65f6\uff0c\u539f hostPath \u4e2d\u7684\u5185\u5bb9\u4ecd\u7136\u5b58\u5728\u3002\u4f46\u8fd9\u4ec5\u9650\u4e8e\u65b0\u7684 Pod \u548c\u5df2\u7ecf\u5220\u9664\u7684 Pod \u88ab\u8c03\u5ea6\u5230\u540c\u4e00\u8282\u70b9\u4e0a\uff0c\u6240\u4ee5\u4e25\u683c\u6765\u8bb2 hostPath \u4ecd\u7136\u5c5e\u4e8e\u4e34\u65f6\u5b58\u50a8\u3002<\/p>\n<p>hostPath \u5377\u7684\u5178\u578b\u5e94\u7528\u662f\u5c06\u4e3b\u673a\u8282\u70b9\u4e0a\u7684\u65f6\u533a\u901a\u8fc7\u5377\u6302\u8f7d\u7684\u65b9\u5f0f\u6ce8\u5165\u5230\u5bb9\u5668\u5185\u90e8\uff0c \u8fdb\u800c\u4fdd\u8bc1\u542f\u52a8\u7684\u5bb9\u5668\u548c\u4e3b\u673a\u8282\u70b9\u65f6\u95f4\u540c\u6b65\u3002<\/p>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n<p>\u521b\u5efa hostpath-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: &quot;hostpath-volume-pod&quot;\n  namespace: default\n  labels:\n    app: &quot;hostpath-volume-pod&quot;\nspec:\n  containers:\n    - name: hostpath-volume-container\n      image: &quot;alpine:latest&quot;\n      command: [&quot;sleep&quot;, &quot;3600&quot;]\n      volumeMounts:\n        - name: localtime\n          mountPath: \/etc\/localtime\n  volumes:\n    - name: localtime\n      hostPath:\n        path: \/usr\/share\/zoneinfo\/Asia\/Shanghai<\/code><\/pre>\n<p>\u8981\u5b9e\u73b0\u65f6\u95f4\u540c\u6b65\uff0c\u53ea\u9700\u8981\u5c06\u4e3b\u673a\u76ee\u5f55 \/usr\/share\/zoneinfo\/Asia\/Shanghai \u901a\u8fc7\u5377\u6302\u8f7d\u7684\u65b9\u5f0f\u6302\u8f7d\u5230\u5bb9\u5668\u5185\u90e8\u7684 \/etc\/localtime \u76ee\u5f55\u5373\u53ef\u3002<\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 kubectl apply \u547d\u4ee4\u5e94\u7528\u8fd9\u4e2a\u6587\u4ef6\uff0c\u7136\u540e\u8fdb\u5165 Pod \u5bb9\u5668\u5185\u90e8\u4f7f\u7528 date \u547d\u4ee4\u67e5\u770b\u5bb9\u5668\u5f53\u524d\u65f6\u95f4\u3002<\/p>\n<pre><code># \u521b\u5efa Pod\n$ kubectl apply -f hostpath-demo.yaml\npod\/hostpath-volume-pod created\n# \u8fdb\u5165 Pod \u5bb9\u5668\u5185\u90e8\n$ kubectl exec -it hostpath-volume-pod -- sh\n# \u6267\u884c date \u547d\u4ee4\u8f93\u51fa\u5f53\u524d\u65f6\u95f4\n\/ # date\nSun Mar 13 17:00:22 CST 2022  # \u4e0a\u6d77\u65f6\u533a<\/code><\/pre>\n<p>\u770b\u5230\u8f93\u51fa\u7ed3\u679c\u4e3a Sun Mar 13 17:00:22 CST 2022 \uff0c\u5176\u4e2d CST \u4ee3\u8868\u4e86\u4e0a\u6d77\u65f6\u533a\uff0c\u4e5f\u5c31\u662f\u4e3b\u673a\u8282\u70b9\u7684\u65f6\u533a\u3002\u5982\u679c\u4e0d\u901a\u8fc7\u5377\u6302\u8f7d\u7684\u65b9\u5f0f\u5c06\u4e3b\u673a\u65f6\u533a\u6302\u8f7d\u5230\u5bb9\u5668\u5185\u90e8\uff0c\u5219\u5bb9\u5668\u9ed8\u8ba4\u65f6\u533a\u4e3a UTC \u65f6\u533a\u3002<\/p>\n<h3>\u5c0f\u7ed3<\/h3>\n<p>\u4e34\u65f6\u5377\u5185\u5bb9\u4ecb\u7ecd\u4e86 K8s \u7684\u4e34\u65f6\u5b58\u50a8\u65b9\u6848\u4ee5\u53ca\u5e94\u7528\uff0c\u5176\u4e2demptyDir \u9002\u7528\u8303\u56f4\u8f83\u5c11\uff0c\u53ef\u4ee5\u5f53\u4f5c\u4e34\u65f6\u7f13\u5b58\u6216\u8005\u8017\u65f6\u4efb\u52a1\u68c0\u67e5\u70b9\u7b49\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7edd\u5927\u591a\u6570 Pod \u5e94\u8be5\u5ffd\u7565\u4e3b\u673a\u8282\u70b9\uff0c\u4e0d\u5e94\u8be5\u8bbf\u95ee\u8282\u70b9\u4e0a\u7684\u6587\u4ef6\u7cfb\u7edf\u3002\u5c3d\u7ba1\u6709\u65f6\u5019 DaemonSet \u53ef\u80fd\u9700\u8981\u8bbf\u95ee\u4e3b\u673a\u8282\u70b9\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u800c\u4e14hostPath \u53ef\u4ee5\u7528\u6765\u540c\u6b65\u4e3b\u673a\u8282\u70b9\u65f6\u533a\u5230\u5bb9\u5668\uff0c\u4f46\u5176\u4ed6\u60c5\u51b5\u4e0b\u4f7f\u7528\u8f83\u5c11\uff0c\u7279\u522bhostPath \u7684\u6700\u4f73\u5b9e\u8df5\u5c31\u662f\u5c3d\u91cf\u4e0d\u4f7f\u7528 hostPath\u3002<\/p>\n<h2>\u6301\u4e45\u5377<\/h2>\n<p>\u4e34\u65f6\u5377\u7684\u751f\u547d\u5468\u671f\u4e0e Pod \u76f8\u540c\uff0c\u5f53 Pod \u88ab\u5220\u9664\u65f6\uff0cK8s \u4f1a\u81ea\u52a8\u5220\u9664 Pod \u6302\u8f7d\u7684\u4e34\u65f6\u5377\u3002\u800c\u5f53 Pod \u4e2d\u7684\u5e94\u7528\u9700\u8981\u5c06\u6570\u636e\u4fdd\u5b58\u5230\u78c1\u76d8\uff0c\u4e14\u5373\u4f7f Pod \u88ab\u8c03\u5ea6\u5230\u5176\u4ed6\u8282\u70b9\u6570\u636e\u4e5f\u5e94\u8be5\u5b58\u5728\u65f6\uff0c\u6211\u4eec\u5c31\u9700\u8981\u4e00\u4e2a\u771f\u6b63\u7684\u6301\u4e45\u5316\u5b58\u50a8\u4e86\u3002<\/p>\n<p>K8s \u652f\u6301\u7684\u6301\u4e45\u5377\u7c7b\u578b\u975e\u5e38\u591a\uff0c\u4ee5\u4e0b\u662f v1.24 \u7248\u672c\u652f\u6301\u7684\u5377\u7c7b\u578b\u7684\u4e00\u90e8\u5206\uff1a<\/p>\n<ul>\n<li>awsElasticBlockStore &#8211; AWS \u5f39\u6027\u5757\u5b58\u50a8\uff08EBS\uff09<\/li>\n<li>azureDisk &#8211; Azure Disk<\/li>\n<li>azureFile &#8211; Azure File<\/li>\n<li>cephfs &#8211; CephFS volume<\/li>\n<li>csi &#8211; \u5bb9\u5668\u5b58\u50a8\u63a5\u53e3 (CSI)<\/li>\n<li>fc &#8211; Fibre Channel (FC) \u5b58\u50a8<\/li>\n<li>gcePersistentDisk &#8211; GCE \u6301\u4e45\u5316\u76d8<\/li>\n<li>glusterfs &#8211; Glusterfs \u5377<\/li>\n<li>iscsi &#8211; iSCSI (SCSI over IP) \u5b58\u50a8<\/li>\n<li>local &#8211; \u8282\u70b9\u4e0a\u6302\u8f7d\u7684\u672c\u5730\u5b58\u50a8\u8bbe\u5907<\/li>\n<li>nfs &#8211; \u7f51\u7edc\u6587\u4ef6\u7cfb\u7edf (NFS) \u5b58\u50a8<\/li>\n<li>portworxVolume &#8211; Portworx \u5377<\/li>\n<li>rbd &#8211; Rados \u5757\u8bbe\u5907 (RBD) \u5377<\/li>\n<li>vsphereVolume &#8211; vSphere VMDK \u5377<\/li>\n<\/ul>\n<p>\u770b\u5230\u8fd9\u4e48\u591a\u6301\u4e45\u5377\u7c7b\u578b\u4e0d\u5fc5\u6050\u614c\uff0c\u56e0\u4e3a K8s \u4e3a\u4e86\u8ba9\u5f00\u53d1\u8005\u4e0d\u5fc5\u5173\u5fc3\u8fd9\u80cc\u540e\u7684\u6301\u4e45\u5316\u5b58\u50a8\u7c7b\u578b\uff0c\u6240\u4ee5\u5bf9\u6301\u4e45\u5377\u6709\u4e00\u5957\u72ec\u6709\u7684\u601d\u60f3\uff0c\u5373\u5f00\u53d1\u8005\u65e0\u8bba\u4f7f\u7528\u54ea\u79cd\u6301\u4e45\u5377\uff0c\u5176\u7528\u6cd5\u90fd\u662f\u4e00\u81f4\u7684\u3002<\/p>\n<p>K8s \u6301\u4e45\u5377\u8bbe\u8ba1\u67b6\u6784\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291367\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>Node1 \u548c Node2 \u5206\u522b\u4ee3\u8868\u4e24\u4e2a\u5de5\u4f5c\u8282\u70b9\uff0c\u5f53\u6211\u4eec\u5728\u5de5\u4f5c\u8282\u70b9\u521b\u5efa Pod \u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7 spec.containers.volumeMounts \u6765\u6307\u5b9a\u5bb9\u5668\u6302\u8f7d\u76ee\u5f55\uff0c\u901a\u8fc7 spec.volumes \u6765\u6307\u5b9a\u6302\u8f7d\u5377\u3002\u4e4b\u524d\u6211\u4eec\u7528\u6302\u8f7d\u5377\u6302\u8f7d\u4e86\u914d\u7f6e\u4fe1\u606f\u548c\u4e34\u65f6\u5377\uff0c\u800c\u6302\u8f7d\u6301\u4e45\u5377\u4e5f\u53ef\u4ee5\u91c7\u7528\u540c\u6837\u7684\u65b9\u5f0f\u3002\u6bcf\u4e2a volumes \u5219\u6307\u5411\u7684\u662f\u4e0b\u65b9\u5b58\u50a8\u96c6\u7fa4\u4e2d\u4e0d\u540c\u7684\u5b58\u50a8\u7c7b\u578b\u3002<\/p>\n<p>\u4e3a\u4e86\u4fdd\u8bc1\u9ad8\u53ef\u7528\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u642d\u5efa\u4e00\u4e2a\u5b58\u50a8\u96c6\u7fa4\u3002\u901a\u5e38\u901a\u8fc7 Pod \u6765\u64cd\u4f5c\u5b58\u50a8\uff0c \u56e0\u4e3a Pod \u90fd\u4f1a\u90e8\u7f72\u5728 Node \u4e2d\uff0c\u6240\u4ee5\u5b58\u50a8\u96c6\u7fa4\u6700\u597d\u8ddf Node \u96c6\u7fa4\u642d\u5efa\u5728\u540c\u4e00\u5185\u7f51\uff0c\u8fd9\u6837\u901f\u5ea6\u66f4\u5feb\u3002\u800c\u5b58\u50a8\u96c6\u7fa4\u5185\u90e8\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55 K8s \u652f\u6301\u7684\u6301\u4e45\u5316\u5b58\u50a8\uff0c\u5982\u4e0a\u56fe\u7684 NFS \u3001CephFS \u3001CephRBD \u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291368\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h3>\u4f7f\u7528NFS<\/h3>\n<p>\u6301\u4e45\u5316\u6302\u8f7d\u65b9\u5f0f\u4e0e\u4e34\u65f6\u5377\u5927\u540c\u5c0f\u5f02\uff0c\u6211\u4eec\u540c\u6837\u4f7f\u7528\u4e00\u4e2a Nginx \u670d\u52a1\u6765\u8fdb\u884c\u6d4b\u8bd5\u3002\u8fd9\u6b21\u6211\u4eec\u7528 NFS \u5b58\u50a8\u6765\u6f14\u793a K8s \u5bf9\u6301\u4e45\u5377\u7684\u652f\u6301\uff08NFS \u6d4b\u8bd5\u73af\u5883\u642d\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u53c2\u8003\u6587\u7ae0\u7ed3\u5c3e\u7684\u9644\u5f55\u90e8\u5206\uff09\uff0c\u521b\u5efa nfs-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: &quot;nfs-nginx-pod&quot;\n  namespace: default\n  labels:\n    app: &quot;nfs-nginx-pod&quot;\nspec:\n  containers:\n    - name: nfs-nginx\n      image: &quot;nginx:latest&quot;\n      ports:\n        - containerPort: 80\n          name: http\n      volumeMounts:\n        - name: html-volume\n          mountPath: \/usr\/share\/nginx\/html\/\n  volumes:\n    - name: html-volume\n      nfs:\n        server: 192.168.99.101  # \u6307\u5b9a nfs server \u5730\u5740\n        path: \/nfs\/data\/nginx  # \u76ee\u5f55\u5fc5\u987b\u5b58\u5728<\/code><\/pre>\n<p>\u5c06\u5bb9\u5668 index.html \u6240\u5728\u76ee\u5f55 \/usr\/share\/nginx\/html\/ \u6302\u8f7d\u5230 NFS \u670d\u52a1\u7684 \/nfs\/data\/nginx \u76ee\u5f55\u4e0b\uff0c\u5728 spec.volumes \u914d\u7f6e\u9879\u4e2d\u6307\u5b9a NFS \u670d\u52a1\u3002\u5176\u4e2dserver \u6307\u660e\u4e86 NFS \u670d\u52a1\u5668\u5730\u5740\uff0cpath \u6307\u660e\u4e86 NFS \u670d\u52a1\u5668\u4e2d\u6302\u8f7d\u7684\u8def\u5f84\uff0c\u5f53\u7136\u8fd9\u4e2a\u8def\u5f84\u5fc5\u987b\u662f\u5df2\u7ecf\u5b58\u5728\u7684\u8def\u5f84\u3002\u7136\u540e\u901a\u8fc7 kubectl apply \u547d\u4ee4\u5e94\u7528\u8fd9\u4e2a\u6587\u4ef6\u3002<\/p>\n<pre><code>$ kubectl apply -f nfs-demo.yaml<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u67e5\u770b\u8fd9\u4e2a Pod \u4f7f\u7528 NFS \u5b58\u50a8\u7684\u7ed3\u679c\uff1a<\/p>\n<p>\u5728 NFS \u8282\u70b9\u4e2d\u6211\u4eec\u51c6\u5907\u4e00\u4e2a index.html \u6587\u4ef6\uff0c\u5176\u5185\u5bb9\u4e3a hello nfs\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291369\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4f7f\u7528 curl \u547d\u4ee4\u76f4\u63a5\u8bbf\u95ee Pod \u7684 IP \u5730\u5740\uff0c\u5373\u53ef\u8fd4\u56de Nginx \u670d\u52a1\u7684 index.html \u5185\u5bb9\uff0c\u7ed3\u679c\u8f93\u51fa\u4e3a hello nfs \uff0c\u8bc1\u660e NFS \u6301\u4e45\u5377\u6302\u8f7d\u6210\u529f\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291370\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u767b\u5165 Pod \u5bb9\u5668\uff0c\u901a\u8fc7 df -Th \u547d\u4ee4\u67e5\u770b\u5bb9\u5668\u76ee\u5f55\u6302\u8f7d\u4fe1\u606f\u3002\u53ef\u4ee5\u53d1\u73b0\uff0c\u5bb9\u5668\u7684 \/usr\/share\/nginx\/html\/ \u76ee\u5f55\u88ab\u6302\u8f7d\u5230 NFS \u670d\u52a1\u7684 \/nfs\/data\/nginx \u76ee\u5f55\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291371\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u73b0\u5728\uff0c\u5f53\u6211\u4eec\u6267\u884c kubectl delete -f nfs-demo.yaml \u5220\u9664 Pod \u540e\uff0cNFS \u670d\u52a1\u5668\u4e0a\u6570\u636e\u76d8\u4e2d\u7684\u6570\u636e\u4f9d\u7136\u5b58\u5728\uff0c\u8fd9\u5c31\u662f\u6301\u4e45\u5377\u3002<\/p>\n<h3>\u6301\u4e45\u5377\u4f7f\u7528\u75db\u70b9<\/h3>\n<p>\u867d\u7136\u901a\u8fc7\u4f7f\u7528\u6301\u4e45\u5377\uff0c\u53ef\u4ee5\u89e3\u51b3\u4e34\u65f6\u5377\u6570\u636e\u6613\u4e22\u5931\u7684\u95ee\u9898\u3002\u4f46\u76ee\u524d\u6301\u4e45\u5377\u7684\u4f7f\u7528\u65b9\u5f0f\u8fd8\u5b58\u5728\u4ee5\u4e0b\u75db\u70b9\uff1a<\/p>\n<ul>\n<li>Pod \u5f00\u53d1\u4eba\u5458\u53ef\u80fd\u5bf9\u5b58\u50a8\u4e0d\u591f\u4e86\u89e3\uff0c\u5374\u8981\u5bf9\u63a5\u591a\u79cd\u5b58\u50a8<\/li>\n<li>\u5b89\u5168\u95ee\u9898\uff0c\u6709\u4e9b\u5b58\u50a8\u53ef\u80fd\u9700\u8981\u8d26\u53f7\u5bc6\u7801\uff0c\u8fd9\u4e9b\u4fe1\u606f\u4e0d\u5e94\u8be5\u66b4\u9732\u7ed9 Pod<\/li>\n<\/ul>\n<p>\u56e0\u6b64\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e9b\u4e0d\u8db3\uff0cK8s \u53c8\u9488\u5bf9\u6301\u4e45\u5316\u5b58\u50a8\u62bd\u8c61\u51fa\u4e86\u4e09\u79cd\u8d44\u6e90 PV\u3001PVC\u3001StorageClass\u3002\u4e09\u79cd\u8d44\u6e90\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>PV \u63cf\u8ff0\u7684\u662f\u6301\u4e45\u5316\u5b58\u50a8\u6570\u636e\u5377<\/li>\n<li>PVC \u63cf\u8ff0\u7684\u662f Pod \u60f3\u8981\u4f7f\u7528\u7684\u6301\u4e45\u5316\u5b58\u50a8\u5c5e\u6027\uff0c\u65e2\u5b58\u50a8\u5377\u7533\u660e<\/li>\n<li>StorageClass \u4f5c\u7528\u662f\u6839\u636e PVC \u7684\u63cf\u8ff0\uff0c\u7533\u8bf7\u521b\u5efa\u5bf9\u5e94\u7684 PV<\/li>\n<\/ul>\n<p>PV \u548c PVC \u7684\u6982\u5ff5\u53ef\u4ee5\u5bf9\u5e94\u7f16\u7a0b\u8bed\u8a00\u4e2d\u7684\u9762\u5411\u5bf9\u8c61\u601d\u60f3\uff0cPVC \u662f\u63a5\u53e3\uff0cPV \u662f\u5177\u4f53\u5b9e\u73b0\u3002<\/p>\n<p>\u6709\u4e86\u8fd9\u4e09\u79cd\u8d44\u6e90\u7c7b\u578b\u540e\uff0cPod \u5c31\u53ef\u4ee5\u901a\u8fc7\u9759\u6001\u4f9b\u5e94\u548c\u52a8\u6001\u4f9b\u5e94\u8fd9\u4e24\u79cd\u65b9\u5f0f\u6765\u4f7f\u7528\u6301\u4e45\u5377\u3002<\/p>\n<h3>\u9759\u6001\u4f9b\u5e94<\/h3>\n<p>\u9759\u6001\u4f9b\u5e94\u4e0d\u6d89\u53ca StorageClass\uff0c\u53ea\u6d89\u53ca\u5230 PVC \u548c PV\u3002\u5176\u4f7f\u7528\u6d41\u7a0b\u56fe\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291372\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4f7f\u7528\u9759\u6001\u4f9b\u5e94\u65f6\uff0cPod \u4e0d\u518d\u76f4\u63a5\u7ed1\u5b9a\u6301\u4e45\u5b58\u50a8\uff0c\u800c\u662f\u4f1a\u7ed1\u5b9a\u5230 PVC \u4e0a\uff0c\u7136\u540e\u518d\u7531 PVC \u8ddf PV \u8fdb\u884c\u7ed1\u5b9a\u3002\u8fd9\u6837\u5c31\u5b9e\u73b0\u4e86 Pod \u4e2d\u7684\u5bb9\u5668\u53ef\u4ee5\u4f7f\u7528\u7531 PV \u771f\u6b63\u53bb\u7533\u8bf7\u7684\u6301\u4e45\u5316\u5b58\u50a8\u3002<\/p>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n<p>\u521b\u5efa pv-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>apiVersion: v1\nkind: PersistentVolume\nmetadata:\n  name: nfs-pv-1g\n  labels:\n    type: nfs\nspec:\n  capacity:\n    storage: 1Gi\n  accessModes:\n    - ReadWriteOnce\n  storageClassName: nfs-storage\n  nfs:\n    server: 192.168.99.101\n    path: \/nfs\/data\/nginx1\n---\napiVersion: v1\nkind: PersistentVolume\nmetadata:\n  name: nfs-pv-100m\n  labels:\n    type: nfs\nspec:\n  capacity:\n    storage: 100m\n  accessModes:\n    - ReadWriteOnce\n  storageClassName: nfs-storage\n  nfs:\n    server: 192.168.99.101\n    path: \/nfs\/data\/nginx2\n---\napiVersion: v1\nkind: PersistentVolumeClaim\nmetadata:\n  name: pvc-500m\n  labels:\n    app: pvc-500m\nspec:\n  storageClassName: nfs-storage\n  accessModes:\n    - ReadWriteOnce\n  resources:\n    requests:\n      storage: 500m\n---\napiVersion: v1\nkind: Pod\nmetadata:\n  name: &quot;pv-nginx-pod&quot;\n  namespace: default\n  labels:\n    app: &quot;pv-nginx-pod&quot;\nspec:\n  containers:\n    - name: pv-nginx\n      image: &quot;nginx:latest&quot;\n      ports:\n        - containerPort: 80\n          name: http\n      volumeMounts:\n        - name: html\n          mountPath: \/usr\/share\/nginx\/html\/\n  volumes:\n    - name: html\n      persistentVolumeClaim:\n        claimName: pvc-500m<\/code><\/pre>\n<p>\u5176\u4e2d yaml \u6587\u4ef6\u5b9a\u4e49\u4e86\u5982\u4e0b\u5185\u5bb9\uff1a<\/p>\n<ul>\n<li>\u4e24\u4e2a PV\uff1a\u7533\u8bf7\u5bb9\u91cf\u5206\u522b\u4e3a 1Gi \u3001100m \uff0c\u901a\u8fc7 spec.capacity.storage \u6307\u5b9a\uff0c\u5e76\u4e14\u4ed6\u4eec\u901a\u8fc7 spec.nfs \u6307\u5b9a\u4e86 NFS \u5b58\u50a8\u670d\u52a1\u7684\u5730\u5740\u548c\u8def\u5f84\u3002<\/li>\n<li>\u4e00\u4e2a PVC \uff1a\u7533\u8bf7 500m \u5927\u5c0f\u7684\u5b58\u50a8\u3002<\/li>\n<li>\u4e00\u4e2a Pod\uff1aspec.volumes \u7ed1\u5b9a\u540d\u4e3a pvc-500m \u7684 PVC\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u7ed1\u5b9a NFS \u5b58\u50a8\u670d\u52a1\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7 kubectl apply \u547d\u4ee4\u5e94\u7528\u8be5\u6587\u4ef6\uff1a<\/p>\n<pre><code>$ kubectl apply -f pv-demo.yaml<\/code><\/pre>\n<p>\u4ee5\u4e0a\u5b8c\u6210\u521b\u5efa\uff0c\u7ed3\u679c\u67e5\u770b\u64cd\u4f5c\u5219\u5982\u4e0b\uff1a<\/p>\n<p>\u9996\u5148\u901a\u8fc7 kubectl get pod \u547d\u4ee4\u67e5\u770b\u65b0\u521b\u5efa\u7684 Pod\uff0c\u5e76\u901a\u8fc7 curl \u547d\u4ee4\u8bbf\u95ee Pod \u7684 IP \u5730\u5740\uff0c\u5f97\u5230 hello nginx1 \u7684\u54cd\u5e94\u7ed3\u679c\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291373\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u7136\u540e\u901a\u8fc7 kubectl get pvc \u67e5\u770b\u521b\u5efa\u7684 PVC\uff1a<\/p>\n<ul>\n<li>STATUS \u5b57\u6bb5\uff1a\u6807\u8bc6 PVC \u5df2\u7ecf\u5904\u4e8e\u7ed1\u5b9a\uff08Bound\uff09\u72b6\u6001\uff0c\u4e5f\u5c31\u662f\u4e0e PV \u8fdb\u884c\u4e86\u7ed1\u5b9a\u3002<\/li>\n<li>CAPACITY \u5b57\u6bb5\uff1a\u6807\u8bc6 PVC \u7ed1\u5b9a\u5230\u4e86 1Gi \u7684 PV \u4e0a\uff0c\u5c3d\u7ba1\u6211\u4eec\u7533\u8bf7\u7684 PVC \u5927\u5c0f\u662f 500m \uff0c\u4f46\u7531\u4e8e\u6211\u4eec\u521b\u5efa\u7684\u4e24\u4e2a PV \u5927\u5c0f\u5206\u522b\u662f 1Gi \u548c 100m \uff0cK8s \u4f1a\u5e2e\u6211\u4eec\u9009\u62e9\u6ee1\u8db3\u6761\u4ef6\u7684\u6700\u4f18\u89e3\u3002\u56e0\u4e3a\u6ca1\u6709\u521a\u597d\u7b49\u4e8e 500m \u5927\u5c0f\u7684 PV \u5b58\u5728\uff0c\u800c 100m \u53c8\u4e0d\u6ee1\u8db3\uff0c\u6240\u4ee5 PVC \u4f1a\u81ea\u52a8\u4e0e 1Gi \u5927\u5c0f\u7684 PV \u8fdb\u884c\u7ed1\u5b9a\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291374\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u901a\u8fc7 kubectl get pv \u6765\u67e5\u8be2\u521b\u5efa\u7684 PV \u8d44\u6e90\uff0c\u53ef\u4ee5\u53d1\u73b0 1Gi \u5927\u5c0f\u7684 PV STATUS \u5b57\u6bb5\u4e3a Bound \u72b6\u6001\u3002CLAIM \u7684\u503c\uff0c\u5219\u6807\u8bc6\u7684\u662f\u4e0e\u4e4b\u7ed1\u5b9a\u7684 PVC \u7684\u540d\u5b57\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291375\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u73b0\u5728\u6211\u4eec\u767b\u5f55 NFS \u670d\u52a1\u5668\uff0c\u786e\u8ba4NFS \u5b58\u50a8\u4e0a\u4e0d\u540c\u6301\u4e45\u5377\uff08PV\uff09\u6302\u8f7d\u7684\u76ee\u5f55\u4e0b\u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291376\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\/nfs\/data\/nginx1 \u76ee\u5f55\u4e0b\u7684 index.html \u5185\u5bb9\u4e3a hello nginx1 \uff0c\u5373\u4e3a\u4e0a\u9762\u901a\u8fc7 curl \u547d\u4ee4\u8bbf\u95ee Pod \u670d\u52a1\u7684\u54cd\u5e94\u7ed3\u679c\u3002<\/p>\n<p>\u5230\u6b64\u6301\u4e45\u5377\u5b8c\u6210\u4f7f\u7528\uff0c\u6211\u4eec\u603b\u7ed3\u4e0b\u6574\u4e2a\u6301\u4e45\u5377\u4f7f\u7528\u6d41\u7a0b\u3002\u9996\u5148\u521b\u5efa\u4e00\u4e2a Pod\uff0c Pod \u7684 spec.volumes \u4e2d\u7ed1\u5b9a PVC\u3002\u8fd9\u91cc\u7684 PVC \u53ea\u662f\u4e00\u4e2a\u5b58\u50a8\u7533\u660e\uff0c\u4ee3\u8868\u6211\u4eec\u7684 Pod \u9700\u8981\u4ec0\u4e48\u6837\u7684\u6301\u4e45\u5316\u5b58\u50a8\uff0c\u5b83\u4e0d\u9700\u8981\u6807\u660e NFS \u670d\u52a1\u5730\u5740\uff0c\u4e5f\u4e0d\u9700\u8981\u660e\u786e\u8981\u548c\u54ea\u4e2a PV \u8fdb\u884c\u7ed1\u5b9a\uff0c\u53ea\u662f\u521b\u5efa\u51fa\u8fd9\u4e2a PVC \u5373\u53ef\u3002\u63a5\u7740\u6211\u4eec\u521b\u5efa\u4e24\u4e2a PV\uff0cPV \u4e5f\u6ca1\u6709\u660e\u786e\u6307\u51fa\u8981\u4e0e\u54ea\u4e2a PVC \u8fdb\u884c\u7ed1\u5b9a\uff0c\u53ea\u9700\u8981\u6307\u51fa\u5b83\u7684\u5927\u5c0f\u548c NFS \u5b58\u50a8\u670d\u52a1\u5730\u5740\u5373\u53ef\u3002\u6b64\u65f6 K8s \u4f1a\u81ea\u52a8\u5e2e\u6211\u4eec\u8fdb\u884c PVC \u548c PV \u7684\u7ed1\u5b9a\uff0c\u8fd9\u6837 Pod \u5c31\u548c PV \u4ea7\u751f\u4e86\u8054\u7cfb\uff0c\u4e5f\u5c31\u53ef\u4ee5\u8bbf\u95ee\u6301\u4e45\u5316\u5b58\u50a8\u4e86\u3002<\/p>\n<p><strong>\u5176\u4ed6<\/strong><\/p>\n<p>\u7ec6\u5fc3\u7684\u4f60\u53ef\u80fd\u5df2\u7ecf\u53d1\u73b0\uff0c\u524d\u6587\u63d0\u5230\u9759\u6001\u4f9b\u5e94\u4e0d\u6d89\u53ca StorageClass\uff0c\u4f46\u662f\u5728\u5b9a\u4e49 PVC \u548c PV \u7684 yaml \u6587\u4ef6\u65f6\uff0c\u8fd8\u662f\u90fd\u4e3a\u5176\u6307\u5b9a\u4e86 spec.storageClassName \u503c\u4e3a nfs-storage\u3002\u56e0\u4e3a\u8fd9\u662f\u4e00\u4e2a\u4fbf\u4e8e\u7ba1\u7406\u7684\u64cd\u4f5c\u65b9\u5f0f\uff0c\u53ea\u6709\u5177\u6709\u76f8\u540c StorageClass \u7684 PVC \u548c PV \u624d\u53ef\u4ee5\u8fdb\u884c\u7ed1\u5b9a\uff0c\u8fd9\u4e2a\u5b57\u6bb5\u6807\u8bc6\u4e86\u6301\u4e45\u5377\u7684\u8bbf\u95ee\u6a21\u5f0f\u3002\u5728 K8s \u6301\u4e45\u5316\u4e2d\u652f\u6301\u56db\u79cd\u8bbf\u95ee\u6a21\u5f0f\uff1a<\/p>\n<ul>\n<li>RWO &#8211; ReadWriteOnce \u2014\u2014 \u5377\u53ef\u4ee5\u88ab\u4e00\u4e2a\u8282\u70b9\u4ee5\u8bfb\u5199\u65b9\u5f0f\u6302\u8f7d<\/li>\n<li>ROX &#8211; ReadOnlyMany \u2014\u2014 \u5377\u53ef\u4ee5\u88ab\u591a\u4e2a\u8282\u70b9\u4ee5\u53ea\u8bfb\u65b9\u5f0f\u6302\u8f7d<\/li>\n<li>RWX &#8211; ReadWriteMany \u2014\u2014 \u5377\u53ef\u4ee5\u88ab\u591a\u4e2a\u8282\u70b9\u4ee5\u8bfb\u5199\u65b9\u5f0f\u6302\u8f7d<\/li>\n<li>RWOP &#8211; ReadWriteOncePod \u2014\u2014 \u5377\u53ef\u4ee5\u88ab\u5355\u4e2a Pod \u4ee5\u8bfb\u5199\u65b9\u5f0f\u6302\u8f7d\uff08 K8s 1.22 \u4ee5\u4e0a\u7248\u672c\uff09<\/li>\n<\/ul>\n<p>\u53ea\u6709\u5177\u6709\u76f8\u540c\u8bfb\u5199\u6a21\u5f0f\u7684 PVC \u548c PV \u624d\u53ef\u4ee5\u8fdb\u884c\u7ed1\u5b9a\u3002<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u6765\u7ee7\u7eed\u5b9e\u9a8c\uff0c\u901a\u8fc7\u547d\u4ee4 kubectl delete pod pv-nginx-pod \u5220\u9664 Pod\uff0c\u518d\u6b21\u67e5\u770b PVC \u548c PV \u72b6\u6001\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291377\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u5230\uff0c Pod \u5220\u9664\u540e PVC \u548c PV \u8fd8\u5728\uff0c\u8fd9\u8bf4\u660e Pod \u5220\u9664\u5e76\u4e0d\u5f71\u54cd PVC \u7684\u5b58\u5728\u3002\u800c\u5f53 PVC \u5220\u9664\u65f6 PV \u662f\u5426\u5220\u9664\uff0c\u5219\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u56de\u6536\u7b56\u7565\u6765\u51b3\u5b9a\u3002PV \u56de\u6536\u7b56\u7565\uff08pv.spec.persistentVolumeReclaimPolicy\uff09\u6709\u4e09\u79cd\uff1a<\/p>\n<ul>\n<li>Retain \u2014\u2014 \u624b\u52a8\u56de\u6536\uff0c\u4e5f\u5c31\u662f\u8bf4\u5220\u9664 PVC \u540e\uff0cPV \u4f9d\u7136\u5b58\u5728\uff0c\u9700\u8981\u7ba1\u7406\u5458\u624b\u52a8\u8fdb\u884c\u5220\u9664<\/li>\n<li>Recycle \u2014\u2014 \u57fa\u672c\u64e6\u9664 (\u76f8\u5f53\u4e8e rm -rf \/*)\uff08\u65b0\u7248\u5df2\u5e9f\u5f03\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u5efa\u8bae\u4f7f\u7528\u52a8\u6001\u4f9b\u5e94\uff09<\/li>\n<li>Delete \u2014\u2014 \u5220\u9664 PV\uff0c\u5373\u7ea7\u8054\u5220\u9664<\/li>\n<\/ul>\n<p>\u73b0\u5728\u901a\u8fc7\u547d\u4ee4 kubectl delete pvc pvc-500m \u5220\u9664 PVC\uff0c\u67e5\u770b PV \u72b6\u6001\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291378\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u53ef\u4ee5\u770b\u5230 PV \u4f9d\u7136\u5b58\u5728\uff0c\u5176 STATUS \u5df2\u7ecf\u53d8\u6210 Released \uff0c\u6b64\u72b6\u6001\u4e0b\u7684 PV \u65e0\u6cd5\u518d\u6b21\u7ed1\u5b9a\u5230 PVC\uff0c\u9700\u8981\u7531\u7ba1\u7406\u5458\u624b\u52a8\u5220\u9664\uff0c\u8fd9\u662f\u7531\u56de\u6536\u7b56\u7565\u51b3\u5b9a\u7684\u3002<\/p>\n<p>\u6ce8\u610f\uff1a\u7ed1\u5b9a\u4e86 Pod \u7684 PVC\uff0c\u5982\u679c Pod \u6b63\u5728\u8fd0\u884c\u4e2d\uff0cPVC \u65e0\u6cd5\u5220\u9664\u3002<\/p>\n<p><strong>\u9759\u6001\u4f9b\u5e94\u7684\u4e0d\u8db3<\/strong><\/p>\n<p>\u6211\u4eec\u4e00\u8d77\u4f53\u9a8c\u4e86\u9759\u6001\u4f9b\u5e94\u7684\u6d41\u7a0b\uff0c\u867d\u7136\u6bd4\u76f4\u63a5\u5728 Pod \u4e2d\u7ed1\u5b9a NFS \u670d\u52a1\u66f4\u52a0\u6e05\u6670\uff0c\u4f46\u9759\u6001\u4f9b\u5e94\u4f9d\u7136\u5b58\u5728\u4e0d\u8db3\u3002<\/p>\n<ul>\n<li>\u9996\u5148\u4f1a\u9020\u6210\u8d44\u6e90\u6d6a\u8d39\uff0c\u5982\u4e0a\u9762\u793a\u4f8b\u4e2d\uff0cPVC \u7533\u8bf7 500m\uff0c\u800c\u6ca1\u6709\u521a\u597d\u7b49\u4e8e 500m \u7684 PV \u5b58\u5728\uff0c\u8fd9 K8s \u4f1a\u5c06 1Gi \u7684 PV \u4e0e\u4e4b\u7ed1\u5b9a<\/li>\n<li>\u8fd8\u6709\u4e00\u4e2a\u81f4\u547d\u7684\u95ee\u9898\uff0c\u5982\u679c\u5f53\u524d\u6ca1\u6709\u6ee1\u8db3\u6761\u4ef6\u7684 PV \u5b58\u5728\uff0c\u5219\u8fd9 PVC \u4e00\u76f4\u65e0\u6cd5\u7ed1\u5b9a\u5230 PV \u5904\u4e8e Pending \u72b6\u6001\uff0cPod \u4e5f\u5c06\u65e0\u6cd5\u542f\u52a8\uff0c\u6240\u4ee5\u5c31\u9700\u8981\u7ba1\u7406\u5458\u63d0\u524d\u521b\u5efa\u597d\u5927\u91cf PV \u6765\u7b49\u5f85\u65b0\u521b\u5efa\u7684 PVC \u4e0e\u4e4b\u7ed1\u5b9a\uff0c\u6216\u8005\u7ba1\u7406\u5458\u65f6\u523b\u76d1\u63a7\u662f\u5426\u6709\u6ee1\u8db3 PVC \u7684 PV \u5b58\u5728\uff0c\u5982\u679c\u4e0d\u5b58\u5728\u5219\u9a6c\u4e0a\u8fdb\u884c\u521b\u5efa\uff0c\u8fd9\u663e\u7136\u662f\u65e0\u6cd5\u63a5\u53d7\u7684<\/li>\n<\/ul>\n<h3>\u52a8\u6001\u4f9b\u5e94<\/h3>\n<p>\u56e0\u4e3a\u9759\u6001\u4f9b\u5e94\u5b58\u5728\u4e0d\u8db3\uff0cK8s \u63a8\u51fa\u4e00\u79cd\u66f4\u52a0\u65b9\u4fbf\u7684\u6301\u4e45\u5377\u4f7f\u7528\u65b9\u5f0f\uff0c\u5373\u52a8\u6001\u4f9b\u5e94\u3002\u52a8\u6001\u4f9b\u7684\u5e94\u6838\u5fc3\u7ec4\u4ef6\u5c31\u662f StorageClass\u2014\u2014\u5b58\u50a8\u7c7b\u3002StorageClass \u4e3b\u8981\u4f5c\u7528\u6709\u4e24\u4e2a\uff1a<\/p>\n<ul>\n<li>\u4e00\u662f\u8d44\u6e90\u5206\u7ec4\uff0c\u6211\u4eec\u4e0a\u9762\u4f7f\u7528\u9759\u6001\u4f9b\u5e94\u65f6\u6307\u5b9a StorageClass \u7684\u76ee\u524d\u5c31\u662f\u5bf9\u8d44\u6e90\u8fdb\u884c\u5206\u7ec4\uff0c\u4fbf\u4e8e\u7ba1\u7406<\/li>\n<li>\u4e8c\u662f StorageClass \u80fd\u591f\u5e2e\u6211\u4eec\u6839\u636e PVC \u8bf7\u6c42\u7684\u8d44\u6e90\uff0c\u81ea\u52a8\u521b\u5efa\u51fa\u65b0\u7684 PV\uff0c\u8fd9\u4e2a\u529f\u80fd\u662f StorageClass \u4e2d provisioner \u5b58\u50a8\u63d2\u4ef6\u5e2e\u6211\u4eec\u6765\u505a\u7684\u3002<\/li>\n<\/ul>\n<p>\u5176\u4f7f\u7528\u6d41\u7a0b\u56fe\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291379\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u76f8\u8f83\u4e8e\u9759\u6001\u4f9b\u5e94\uff0c\u52a8\u6001\u4f9b\u5e94\u5728 PVC \u548c PV \u4e4b\u95f4\u589e\u52a0\u4e86\u5b58\u50a8\u7c7b\u3002\u8fd9\u6b21 PV \u5e76\u4e0d\u9700\u8981\u63d0\u524d\u521b\u5efa\u597d\uff0c\u53ea\u8981\u6211\u4eec\u7533\u8bf7\u4e86 PVC \u5e76\u4e14\u7ed1\u5b9a\u4e86\u6709  provisioner \u529f\u80fd\u7684 StorageClass\uff0cStorageClass \u4f1a\u5e2e\u6211\u4eec\u81ea\u52a8\u521b\u5efa PV \u5e76\u4e0e PVC \u8fdb\u884c\u7ed1\u5b9a\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u63d0\u4f9b\u7684\u6301\u4e45\u5316\u5b58\u50a8\u7c7b\u578b\uff0c\u5206\u522b\u521b\u5efa\u5bf9\u5e94\u7684 StorageClass\uff0c\u6bd4\u5982\uff1a<\/p>\n<ul>\n<li>nfs-storage<\/li>\n<li>cephfs-storage<\/li>\n<li>rbd-storage<\/li>\n<\/ul>\n<p>\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e2a\u9ed8\u8ba4 StorageClass\uff0c \u901a\u8fc7\u5728\u521b\u5efa StorageClass \u8d44\u6e90\u65f6\u6307\u5b9a\u5bf9\u5e94\u7684 annotations \u5b9e\u73b0\uff1a<\/p>\n<pre><code>apiVersion: storage.K8s.io\/v1\nkind: StorageClass\nmetadata:\n  annotations:\n    storageclass.kubernetes.io\/is-default-class: &quot;true&quot;\n...<\/code><\/pre>\n<p>\u5f53\u521b\u5efa PVC \u65f6\u4e0d\u6307\u5b9a spec.storageClassName \uff0c\u8fd9\u4e2a PVC \u5c31\u4f1a\u4f7f\u7528\u9ed8\u8ba4 StorageClass\u3002<\/p>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n<p>\u4ecd\u7136\u4f7f\u7528 NFS \u6765\u4f5c\u4e3a\u6301\u4e45\u5316\u5b58\u50a8\u3002<\/p>\n<p>\u9996\u5148\u9700\u8981\u6709\u4e00\u4e2a\u80fd\u591f\u652f\u6301\u81ea\u52a8\u521b\u5efa PV \u7684 provisioner \uff0c\u8fd9\u53ef\u4ee5\u5728 GitHub \u4e2d\u627e\u5230\u4e00\u4e9b\u5f00\u6e90\u7684\u5b9e\u73b0\u3002\u793a\u4f8b\u4f7f\u7528 nfs-subdir-external-provisioner \u8fd9\u4e2a\u5b58\u50a8\u63d2\u4ef6\uff0c\u5177\u4f53\u5b89\u88c5\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u901a\u8fc7 kubectl apply \u547d\u4ee4\u5e94\u7528\u5b83\u63d0\u4f9b\u7684\u51e0\u4e2a yaml \u6587\u4ef6\u5373\u53ef\u3002\u5b8c\u6210\u5b58\u50a8\u63d2\u4ef6\u5b89\u88c5\u540e\uff0c\u53ef\u4ee5\u521b\u5efa\u5982\u4e0b StorageClass\uff1a<\/p>\n<pre><code>apiVersion: storage.K8s.io\/v1\nkind: StorageClass\nmetadata:\n  name: nfs-storage\nprovisioner: K8s-sigs.io\/nfs-subdir-external-provisioner\nparameters:\n  archiveOnDelete: &quot;true&quot;<\/code><\/pre>\n<p>\u8fd9\u4e2a StorageClass \u6307\u5b9a\u4e86 provisioner \u4e3a\u6211\u4eec\u5b89\u88c5\u597d\u7684 K8s-sigs.io\/nfs-subdir-external-provisioner\u3002<br \/>Provisioner \u672c\u8d28\u4e0a\u4e5f\u662f\u4e00\u4e2a Pod\uff0c\u53ef\u4ee5\u901a\u8fc7 kubectl get pod \u6765\u67e5\u770b\u3002\u6307\u5b9a\u4e86 provisioner \u7684 StorageClass \u5c31\u6709\u4e86\u81ea\u52a8\u521b\u5efa PV \u7684\u80fd\u529b\uff0c\u56e0\u4e3a Pod \u80fd\u591f\u81ea\u52a8\u521b\u5efa PV\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291380\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u521b\u5efa\u597d provisioner \u548c StorageClass \u5c31\u53ef\u4ee5\u8fdb\u884c\u52a8\u6001\u4f9b\u5e94\u7684\u5b9e\u9a8c\u4e86\u3002\u9996\u5148\u521b\u5efa nfs-provisioner-demo.yaml \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>kind: PersistentVolumeClaim\napiVersion: v1\nmetadata:\n  name: test-claim\nspec:\n  storageClassName: nfs-storage\n  accessModes:\n    - ReadWriteOnce\n  resources:\n    requests:\n      storage: 1Mi\n---\napiVersion: v1\nkind: Pod\nmetadata:\n  name: &quot;test-nginx-pod&quot;\n  namespace: default\n  labels:\n    app: &quot;test-nginx-pod&quot;\nspec:\n  containers:\n    - name: test-nginx\n      image: &quot;nginx:latest&quot;\n      ports:\n        - containerPort: 80\n          name: http\n      volumeMounts:\n        - name: html\n          mountPath: \/usr\/share\/nginx\/html\/\n  volumes:\n    - name: html\n      persistentVolumeClaim:\n        claimName: test-claim<\/code><\/pre>\n<p>\u8fd9\u91cc\u6211\u4eec\u53ea\u5b9a\u4e49\u4e86\u4e00\u4e2a PVC \u548c\u4e00\u4e2a Pod\uff0c\u5e76\u6ca1\u6709\u5b9a\u4e49 PV\u3002\u5176\u4e2d PVC \u7684 spec.storageClassName \u6307\u5b9a\u4e3a\u4e0a\u9762\u521b\u5efa\u597d\u7684 StorageClass nfs-storage \uff0c\u7136\u540e\u53ea\u9700\u8981\u901a\u8fc7 kubectl apply \u547d\u4ee4\u6765\u521b\u5efa\u51fa PVC \u548c Pod \u5373\u53ef\uff1a<\/p>\n<pre><code>$ kubectl apply -f nfs-provisioner-demo.yaml\npersistentvolumeclaim\/test-claim created\npod\/test-nginx-pod created<\/code><\/pre>\n<p>\u73b0\u5728\u67e5\u770b PV\u3001PVC \u548c Pod\uff0c\u53ef\u4ee5\u770b\u5230 PV \u5df2\u7ecf\u88ab\u81ea\u52a8\u521b\u5efa\u51fa\u6765\u4e86\uff0c\u5e76\u4e14\u5b83\u4eec\u4e4b\u95f4\u5b9e\u73b0\u4e86\u7ed1\u5b9a\u5173\u7cfb\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291381\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u7136\u540e\u767b\u5f55 NFS \u670d\u52a1\uff0c\u7ed9\u8fdc\u7a0b\u6302\u8f7d\u7684\u5377\u5199\u5165 hello nfs \u6570\u636e\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291382\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u5728 K8s \u4fa7\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528 curl \u547d\u4ee4\u9a8c\u8bc1\u6302\u8f7d\u7684\u6b63\u786e\u6027\u4e86\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291383\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6b64\u65f6\u5982\u679c\u4f60\u901a\u8fc7 kubectl delete -f nfs-provisioner-demo.yaml \u5220\u9664 Pod \u548c PVC\uff0cPV \u4e5f\u4f1a\u8ddf\u7740\u5220\u9664\uff0c\u56e0\u4e3a PV \u7684\u5220\u9664\u7b56\u7565\u662f Delete \u3002\u4e0d\u8fc7\u5220\u9664\u540eNFS \u5377\u4e2d\u7684\u6570\u636e\u8fd8\u5728\uff0c\u53ea\u4e0d\u8fc7\u88ab\u5f52\u6863\u6210\u4e86\u4ee5 archived \u5f00\u5934\u7684\u76ee\u5f55\u3002\u8fd9\u662f K8s-sigs.io\/nfs-subdir-external-provisioner \u8fd9\u4e2a\u5b58\u50a8\u63d2\u4ef6\u6240\u5b9e\u73b0\u7684\u529f\u80fd\uff0c\u8fd9\u5c31\u662f\u5b58\u50a8\u63d2\u4ef6\u7684\u5f3a\u5927\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291384\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u5b8c\u6210\u5168\u90e8\u64cd\u4f5c\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u901a\u8fc7\u5b9a\u4e49\u6307\u5b9a\u4e86 provisioner \u7684 StorageClass\uff0c\u4e0d\u4ec5\u5b9e\u73b0\u4e86 PV \u7684\u81ea\u52a8\u5316\u521b\u5efa\uff0c\u751a\u81f3\u5b9e\u73b0\u4e86\u6570\u636e\u5220\u9664\u65f6\u81ea\u52a8\u5f52\u6863\u7684\u529f\u80fd\uff0c\u8fd9\u5c31\u662f K8s \u52a8\u6001\u4f9b\u5e94\u5b58\u50a8\u8bbe\u8ba1\u7684\u7cbe\u5999\u3002\u4e5f\u53ef\u4ee5\u8bf4\u52a8\u6001\u4f9b\u5e94\u662f\u6301\u4e45\u5316\u5b58\u50a8\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<p><strong>\u9644\u5f55\uff1aNFS \u5b9e\u9a8c\u73af\u5883\u642d\u5efa<\/strong><\/p>\n<p>NFS \u5168\u79f0 Network File System\uff0c\u662f\u4e00\u79cd\u5206\u5e03\u5f0f\u5b58\u50a8\uff0c\u5b83\u80fd\u591f\u901a\u8fc7\u5c40\u57df\u7f51\u5b9e\u73b0\u4e0d\u540c\u4e3b\u673a\u95f4\u76ee\u5f55\u5171\u4eab\u3002<\/p>\n<p>\u4ee5\u4e0b\u4e3a NFS \u7684\u67b6\u6784\u56fe\uff1a\u7531\u4e00\u4e2a Server \u8282\u70b9\u548c\u4e24\u4e2a Client \u8282\u70b9\u7ec4\u6210\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043291385\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4e0b\u9762\u5217\u51fa NFS \u5728 Centos \u7cfb\u7edf\u4e2d\u7684\u642d\u5efa\u8fc7\u7a0b\u3002<\/p>\n<p><strong>Server \u8282\u70b9<\/strong><\/p>\n<pre><code># \u5b89\u88c5 nfs \u5de5\u5177\nyum install -y nfs-utils\n\n# \u521b\u5efa NFS \u76ee\u5f55\nmkdir -p \/nfs\/data\/\n\n# \u521b\u5efa exports \u6587\u4ef6\uff0c* \u8868\u793a\u6240\u6709\u7f51\u7edc\u4e0a\u7684 IP \u90fd\u53ef\u4ee5\u8bbf\u95ee\necho &quot;\/nfs\/data\/ *(insecure,rw,sync,no_root_squash)&quot; &gt; \/etc\/exports\n\n# \u542f\u52a8 rpc \u8fdc\u7a0b\u7ed1\u5b9a\u529f\u80fd\u3001NFS \u670d\u52a1\u529f\u80fd\nsystemctl enable rpcbind\nsystemctl enable nfs-server\nsystemctl start rpcbind\nsystemctl start nfs-server\n\n# \u91cd\u8f7d\u4f7f\u914d\u7f6e\u751f\u6548\nexportfs -r\n# \u68c0\u67e5\u914d\u7f6e\u662f\u5426\u751f\u6548\nexportfs\n# \u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\u6240\u793a\n# \/nfs\/data      <\/code><\/pre>\n<p><strong>Client \u8282\u70b9<\/strong><\/p>\n<pre><code># \u5173\u95ed\u9632\u706b\u5899\nsystemctl stop firewalld\nsystemctl disable firewalld\n\n# \u5b89\u88c5 nfs \u5de5\u5177\nyum install -y nfs-utils\n\n# \u6302\u8f7d nfs \u670d\u52a1\u5668\u4e0a\u7684\u5171\u4eab\u76ee\u5f55\u5230\u672c\u673a\u8def\u5f84 \/root\/nfsmount\nmkdir \/root\/nfsmount\nmount -t nfs 192.168.99.101:\/nfs\/data \/root\/nfsmount<\/code><\/pre>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000043291365\">https:\/\/segmentfault.com\/a\/1190000043291365<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Docker \u7684\u8bbe\u8ba1\u4e2d\uff0c\u5bb9\u5668\u5185\u7684\u6587\u4ef6\u662f\u4e34\u65f6\u5b58\u653e\u7684\uff0c\u5e76\u4e14\u968f\u7740\u5bb9\u5668\u7684\u5220\u9664\uff0c\u5bb9\u5668\u5185\u90e8\u7684\u6570\u636e\u4e5f\u4f1a\u4e00\u540c\u88ab\u6e05\u7a7a\u3002\u4e0d\u8fc7\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10007066","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10007066","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10007066"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10007066\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10007066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10007066"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10007066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}