一、准备下载资源

https://download.csdn.net/download/weixin_43205308/89608560

以下，每个k8s节点都要执行

二、载入镜像

解压上面的下载资源的文件夹后，会有图中的两个资源

载入资源

<code> docker load --input flannel-flannel-v0.25.1-amd64.tar.gz

docker load --input flannel-flannel-cni-plugin-v1.4.1-flannel1-amd64.tar.gz

执行成功会有这两个镜像

并且出现下面两个包

将tar镜像压缩包，导入到containerd的k8s.io命名空间中

<code>sudo ctr -n k8s.io images import flannel-flannel-cni-plugin-v1.4.1-flannel1-amd64.tar

<code> sudo ctr -n k8s.io images import flannel-flannel-v0.25.1-amd64.tar

校验是否成功

<code>sudo ctr -n k8s.io i check | grep flannel

修改flannmel.yaml文件

这是修改后的，直接复制就好了

<code>---

kind: Namespace

apiVersion: v1

metadata:

name: kube-flannel

labels:

k8s-app: flannel

pod-security.kubernetes.io/enforce: privileged

---

kind: ClusterRole

apiVersion: rbac.authorization.k8s.io/v1

metadata:

labels:

k8s-app: flannel

name: flannel

rules:

- apiGroups:

- ""

resources:

- pods

verbs:

- get

- apiGroups:

- ""

resources:

- nodes

verbs:

- get

- list

- watch

- apiGroups:

- ""

resources:

- nodes/status

verbs:

- patch

---

kind: ClusterRoleBinding

apiVersion: rbac.authorization.k8s.io/v1

metadata:

labels:

k8s-app: flannel

name: flannel

roleRef:

apiGroup: rbac.authorization.k8s.io

kind: ClusterRole

name: flannel

subjects:

- kind: ServiceAccount

name: flannel

namespace: kube-flannel

---

apiVersion: v1

kind: ServiceAccount

metadata:

labels:

k8s-app: flannel

name: flannel

namespace: kube-flannel

---

kind: ConfigMap

apiVersion: v1

metadata:

name: kube-flannel-cfg

namespace: kube-flannel

labels:

tier: node

k8s-app: flannel

app: flannel

data:

cni-conf.json: |

{

"name": "cbr0",

"cniVersion": "0.3.1",

"plugins": [

{

"type": "flannel",

"delegate": {

"hairpinMode": true,

"isDefaultGateway": true

}

},

{

"type": "portmap",

"capabilities": {

"portMappings": true

}

}

]

}

net-conf.json: |

{

"Network": "10.244.0.0/16",

"EnableNFTables": false,

"Backend": {

"Type": "vxlan"

}

}

---

apiVersion: apps/v1

kind: DaemonSet

metadata:

name: kube-flannel-ds

namespace: kube-flannel

labels:

tier: node

app: flannel

k8s-app: flannel

spec:

selector:

matchLabels:

app: flannel

template:

metadata:

labels:

tier: node

app: flannel

spec:

affinity:

nodeAffinity:

requiredDuringSchedulingIgnoredDuringExecution:

nodeSelectorTerms:

- matchExpressions:

- key: kubernetes.io/os

operator: In

values:

- linux

hostNetwork: true

priorityClassName: system-node-critical

tolerations:

- operator: Exists

effect: NoSchedule

serviceAccountName: flannel

initContainers:

- name: install-cni-plugin

image: docker.io/flannel/flannel-cni-plugin:v1.4.1-flannel1

imagePullPolicy: Never

command:

- cp

args:

- -f

- /flannel

- /opt/cni/bin/flannel

volumeMounts:

- name: cni-plugin

mountPath: /opt/cni/bin

- name: install-cni

image: docker.io/flannel/flannel:v0.25.1

imagePullPolicy: Never

command:

- cp

args:

- -f

- /etc/kube-flannel/cni-conf.json

- /etc/cni/net.d/10-flannel.conflist

volumeMounts:

- name: cni

mountPath: /etc/cni/net.d

- name: flannel-cfg

mountPath: /etc/kube-flannel/

containers:

- name: kube-flannel

image: docker.io/flannel/flannel:v0.25.1

imagePullPolicy: Never

command:

- /opt/bin/flanneld

args:

- --ip-masq

- --kube-subnet-mgr

resources:

requests:

cpu: "100m"

memory: "50Mi"

securityContext:

privileged: false

capabilities:

add: ["NET_ADMIN", "NET_RAW"]

env:

- name: POD_NAME

valueFrom:

fieldRef:

fieldPath: metadata.name

- name: POD_NAMESPACE

valueFrom:

fieldRef:

fieldPath: metadata.namespace

- name: EVENT_QUEUE_DEPTH

value: "5000"

volumeMounts:

- name: run

mountPath: /run/flannel

- name: flannel-cfg

mountPath: /etc/kube-flannel/

- name: xtables-lock

mountPath: /run/xtables.lock

volumes:

- name: run

hostPath:

path: /run/flannel

- name: cni-plugin

hostPath:

path: /opt/cni/bin

- name: cni

hostPath:

path: /etc/cni/net.d

- name: flannel-cfg

configMap:

name: kube-flannel-cfg

- name: xtables-lock

hostPath:

path: /run/xtables.lock

type: FileOrCreate

截图展示修改后的地方

<code>kubectl apply -f 你的yaml文件

成功