下面是本人在幫好友安裝k8s過程中在安裝網絡插件這里碰到的問題使用kubectl apply -f kube-flannel.yml安裝flannel網絡插件安裝

下面是本人在幫好友安裝k8s過程中在安裝網絡插件這里碰到的問題

使用kubectl apply -f kube-flannel.yml安裝flannel網絡插件

安裝完之后是要等個一陣子的，但是等了十分鐘后發現節點狀態還是為Noready

通過journalctl -f -u kubelet 查看kubelet日志發現報錯

systemctl status kubelet 查看報錯如下

# systemctl status kubeletn* kubelet.service - kubelet: The Kubernetes Node Agentn Loaded: loaded (/usr/lib/systemd/system/kubelet.service; disabled; vendor preset: disabled)n Drop-In: /usr/lib/systemd/system/kubelet.service.dn `-10-kubeadm.confn Active: active (running) since 2022-11-04 19:53:22 CST; 7s agon Docs: https://kubernetes.io/docs/n Main PID: 22607 (kubelet)n Tasks: 14n Memory: 32.7Mn CGroup: /system.slice/kubelet.servicen `-22607 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --config=/var/lib/kubelet/config.yaml --network-plugin=cni...nn22607 kubelet.go:1742] "Failed creating a mirror pod for" err="pods "kube-apiserver-master" already exists" pod="kube-...server-master"n22607 kubelet.go:1742] "Failed creating a mirror pod for" err="pods "kube-controller-manager-master" already exists" p...anager-master"n22607 request.go:665] Waited for 1.041822653s due to client-side throttling, not priority and fairness, request: POST:ht...be-system/podsn22607 kubelet.go:1742] "Failed creating a mirror pod for" err="pods "kube-scheduler-master" already exists" pod="kube-...eduler-master"n22607 configmap.go:200] Couldn't get configMap kube-system/kube-proxy: failed to sync configmap cache: timed out waiting... the conditionn22607 nestedpendingoperations.go:335] Operation for "{volumeName:kubernetes.io/configmap/6839e60e-9e18-4b9a-90e5-bdbc860...215 +0800 CSTn22607 configmap.go:200] Couldn't get configMap kube-flannel/kube-flannel-cfg: failed to sync configmap cache: timed out ... the conditionn22607 nestedpendingoperations.go:335] Operation for "{volumeName:kubernetes.io/configmap/a075c2d0-52d0-4f92-a2db-8b79b5e...7888 +0800 CSTn22607 cni.go:240] "Unable to update cni config" err="no networks found in /etc/cni/net.d"n22607 kubelet.go:2391] "Container runtime network not ready" networkReady="NetworkReady=false reason:NetworkPluginNotRea...uninitialized"nHint: Some lines were ellipsized, use -l to show in full.

還是說報沒有安裝網絡插件的問題。只能說明網絡插件安裝失敗了

查看kube-flannel pod節點狀態 Terminating

[root@master k8s]# kubectl get pod -n kube-flannelnNAME READY STATUS RESTARTS AGEnkube-flannel-ds-v8xw5 0/1 Terminating 0 33m

查看 kube-flannel 啟動過程 看Events事件

[root@master k8s]# kubectl describe pod -n kube-flannelnnEvents:n Type Reason Age From Messagen ---- ------ ---- ---- -------n Normal Scheduled 42s default-scheduler Successfully assigned kube-flannel/kube-flannel-ds-z45kj to mastern Normal Pulled 42s kubelet Container image "docker.io/rancher/mirrored-flannelcni-flannel-cni-plugin:v1.1.0" already present on machinen Normal Created 42s kubelet Created container install-cni-pluginn Normal Started 42s kubelet Started container install-cni-pluginn Normal Pulling 41s kubelet Pulling image "docker.io/rancher/mirrored-flannelcni-flannel:v0.20.0"

發現在 pulling image "http://docker.io/rancher/mirrored-flannelcni-flannel:v0.20.0" 這個地方一直卡著。

原因是這是一個國外的鏡像訪問不了，有點慢。想辦法替換其它可以下載的鏡像

搜索一下

[root@master k8s]# docker search flannelnNAME DESCRIPTION STARS OFFICIAL AUTOMATEDnjmgao1983/flannel from quay.io/coreos/flannel 10 [OK]nlizhenliang/flannel 4neaszlab/flannel from quay.io/coreos/flannel 4nsigwindowstools/flannel 3nflannelcni/flannel primary images from https://github.com/flann… 2nwinjay/flannel 1nflannelcni/flannel-cni-plugin Flannel CNI plugin images as built from: htt… 1njasonbrooks/flannel flannel system container 1 [OK]

選擇拉取一個 jmgao1983/flannel 與 lizhenliang/flannel 都行

docker pull jmgao1983/flannel

在線編輯 kube-flannel.yml

kubectl edit -f kube-flannel.yml

initContainers:n - name: install-cni-pluginn #image: flannelcni/flannel-cni-plugin:v1.1.0 for ppc64le and mips64le (dockerhub limitations may apply)n image: docker.io/rancher/mirrored-flannelcni-flannel-cni-plugin:v1.1.0n command:n - cpn args:n - -fn - /flanneln - /opt/cni/bin/flanneln volumeMounts:n - name: cni-pluginn mountPath: /opt/cni/binn - name: install-cnin #image: flannelcni/flannel:v0.20.0 for ppc64le and mips64le (dockerhub limitations may apply)n image: jmgao1983/flanneln command:n - cpn args:n - -fn - /etc/kube-flannel/cni-conf.jsonn - /etc/cni/net.d/10-flannel.conflistn volumeMounts:n - name: cnin mountPath: /etc/cni/net.dn - name: flannel-cfgn mountPath: /etc/kube-flannel/n containers:n - name: kube-flanneln #image: flannelcni/flannel:v0.20.0 for ppc64le and mips64le (dockerhub limitations may apply)n image: jmgao1983/flannel

將 http://docker.io/rancher/mirrored-flannelcni-flannel:v0.20.0 換成 jmgao1983/flannel

再次查看

kubectl describe pod -n kube-flannel

看到 Started container kube-flannel 表示啟動成功

Events:n Type Reason Age From Messagen ---- ------ ---- ---- -------n Normal Scheduled 42s default-scheduler Successfully assigned kube-flannel/kube-flannel-ds-lg6th to mastern Normal Pulled 42s kubelet Container image "docker.io/rancher/mirrored-flannelcni-flannel-cni-plugin:v1.1.0" already present on machinen Normal Created 42s kubelet Created container install-cni-pluginn Normal Started 42s kubelet Started container install-cni-pluginn Normal Pulling 41s kubelet Pulling image "jmgao1983/flannel"n Normal Pulled 24s kubelet Successfully pulled image "jmgao1983/flannel" in 17.43224951sn Normal Created 24s kubelet Created container install-cnin Normal Started 24s kubelet Started container install-cnin Normal Pulling 23s kubelet Pulling image "jmgao1983/flannel"n Normal Pulled 2s kubelet Successfully pulled image "jmgao1983/flannel" in 20.788409144sn Normal Created 2s kubelet Created container kube-flanneln Normal Started 2s kubelet Started container kube-flannel

再次查看nodes狀態

[root@master k8s]# kubectl get pod -n kube-flannelnNAME READY STATUS RESTARTS AGEnkube-flannel-ds-lg6th 1/1 Running 0 11mn[root@master k8s]# kubectl get nodesnNAME STATUS ROLES AGE VERSIONnmaster Ready control-plane,master 88m v1.23.9