kubernetes 部署 flannel 网络插件

flannel 的yaml文件

官方网址： https://kubernetes.io/docs/concepts/cluster-administration/addons/

第一种下载方式：yaml文件地址：https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml

官方网址：https://projectcalico.docs.tigera.io/getting-started/kubernetes/flannel/flannel

第二种下载方式：curl https://projectcalico.docs.tigera.io/manifests/canal.yaml -O

1、创建kube-flannel.yml文件，将以下内容写入。

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--- kind: Namespace apiVersion: v1 metadata:   name: kube-flannel   labels:     pod-security.kubernetes.io/enforce: privileged --- kind: ClusterRole apiVersion: rbac.authorization.k8s.io/v1 metadata:   name: flannel rules: - apiGroups:   - ""   resources:   - pods   verbs:   - get - apiGroups:   - ""   resources:   - nodes   verbs:   - list   - watch - apiGroups:   - ""   resources:   - nodes/status   verbs:   - patch --- kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1 metadata:   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:   name: flannel   namespace: kube-flannel --- kind: ConfigMap apiVersion: v1 metadata:   name: kube-flannel-cfg   namespace: kube-flannel   labels:     tier: node     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",       "Backend": {         "Type": "vxlan"       }     } --- apiVersion: apps/v1 kind: DaemonSet metadata:   name: kube-flannel-ds   namespace: kube-flannel   labels:     tier: node     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: flannelcni/flannel-cni-plugin:v1.1.0 for ppc64le and mips64le (dockerhub limitations may apply)         image: docker.io/rancher/mirrored-flannelcni-flannel-cni-plugin:v1.1.0         command:         - cp         args:         - -f         - /flannel         - /opt/cni/bin/flannel         volumeMounts:         - name: cni-plugin           mountPath: /opt/cni/bin       - name: install-cni        #image: flannelcni/flannel:v0.20.1 for ppc64le and mips64le (dockerhub limitations may apply)         image: docker.io/rancher/mirrored-flannelcni-flannel:v0.20.1         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: flannelcni/flannel:v0.20.1 for ppc64le and mips64le (dockerhub limitations may apply)         image: docker.io/rancher/mirrored-flannelcni-flannel:v0.20.1         command:         - /opt/bin/flanneld         args:         - --ip-masq         - --kube-subnet-mgr         resources:           requests:             cpu: "100m"             memory: "50Mi"           limits:             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

注：此处注意初始化IP，如有不同，根据自己的修改： 

net-conf.json: |
{
"Network": "10.244.0.0/16",
"Backend": {
"Type": "vxlan"
}
}

2、部署命令

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1	yang@k8s-master:~$ kubectl apply -f kube-flannel.yaml

　

Network