73 lines
3.0 KiB
Markdown
73 lines
3.0 KiB
Markdown
---
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description: selfLink 问题
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---
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# selfLink 问题
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<AdSenseTitle/>
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## 问题描述
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Kubernetes [v1.20](https://kubernetes.io/docs/setup/release/notes/) 开始，默认删除了 `metadata.selfLink` 字段，然而，部分应用仍然依赖于这个字段，例如 `nfs-client-provisioner`。如果仍然要继续使用这些应用，您将需要重新启用该字段。
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## 启用 selfLink 字段
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通过配置 apiserver 启动参数中的 `--feature-gates` 中的 `RemoveSelfLink=false`，可以重新启用 `metadata.selfLink` 字段。
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请参考 [kube-apiserver 参数配置](https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/)
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具体来说，如果您使用 kubeadm 安装 Kubernetes，请修改 `/etc/kubernetes/manifests/kube-apiserver.yaml` 文件，并在其启动参数中增加一行 `- --feature-gates=RemoveSelfLink=false`，如下第 44 行所示：
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```yaml {44}
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apiVersion: v1
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kind: Pod
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metadata:
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annotations:
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kubeadm.kubernetes.io/kube-apiserver.advertise-address.endpoint: 192.168.32.51:6443
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creationTimestamp: null
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labels:
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component: kube-apiserver
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tier: control-plane
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name: kube-apiserver
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namespace: kube-system
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spec:
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containers:
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- command:
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- kube-apiserver
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- --advertise-address=192.168.32.51
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- --allow-privileged=true
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- --authorization-mode=Node,RBAC
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- --client-ca-file=/etc/kubernetes/pki/ca.crt
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- --enable-admission-plugins=NodeRestriction
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- --enable-bootstrap-token-auth=true
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- --etcd-cafile=/etc/kubernetes/pki/etcd/ca.crt
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- --etcd-certfile=/etc/kubernetes/pki/apiserver-etcd-client.crt
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- --etcd-keyfile=/etc/kubernetes/pki/apiserver-etcd-client.key
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- --etcd-servers=https://127.0.0.1:2379
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- --insecure-port=0
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- --kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt
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- --kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key
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- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
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- --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt
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- --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key
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- --requestheader-allowed-names=front-proxy-client
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- --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt
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- --requestheader-extra-headers-prefix=X-Remote-Extra-
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- --requestheader-group-headers=X-Remote-Group
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- --requestheader-username-headers=X-Remote-User
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- --secure-port=6443
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- --service-account-issuer=https://kubernetes.default.svc.cluster.local
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- --service-account-key-file=/etc/kubernetes/pki/sa.pub
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- --service-account-signing-key-file=/etc/kubernetes/pki/sa.key
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- --service-cluster-ip-range=10.96.0.0/16
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- --tls-cert-file=/etc/kubernetes/pki/apiserver.crt
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- --tls-private-key-file=/etc/kubernetes/pki/apiserver.key
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- --feature-gates=RemoveSelfLink=false
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image: registry.aliyuncs.com/k8sxio/kube-apiserver:v1.20.1
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imagePullPolicy: IfNotPresent
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livenessProbe:
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failureThreshold: 8
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httpGet:
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...
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```
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