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