3.部署kubernetes 網路元件
目前主要支援的CNI元件
CNI外掛：Flannel、Calico、Weave和Canal(技術上是多個外掛的組合)
本次部署，使用Calico元件，可以使用改元件的BGP功能與內網打通Pod和SVC網路
[M1]在Kubernetes叢集中部署Calico，在任一Master節點執行即可
下載calico部署檔案
curl https://projectcalico.docs.tigera.io/manifests/calico-typha.yaml -o calico.yaml
修改CIDR
- name: CALICO_IPV4POOL_CIDR
value: "172.15.0.0/16" #修改為Pod的網路
部署calico
kubectl apply -f calico.yaml
以下為輸出
configmap/calico-config unchanged
customresourcedefinition.apiextensions.k8s.io/bgpconfigurations.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/bgppeers.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/blockaffinities.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/caliconodestatuses.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/clusterinformations.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/felixconfigurations.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/globalnetworkpolicies.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/globalnetworksets.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/hostendpoints.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/ipamblocks.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/ipamconfigs.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/ipamhandles.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/ippools.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/ipreservations.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/kubecontrollersconfigurations.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/networkpolicies.crd.projectcalico.org configured
customresourcedefinition.apiextensions.k8s.io/networksets.crd.projectcalico.org configured
clusterrole.rbac.authorization.k8s.io/calico-kube-controllers unchanged
clusterrolebinding.rbac.authorization.k8s.io/calico-kube-controllers unchanged
clusterrole.rbac.authorization.k8s.io/calico-node unchanged
clusterrolebinding.rbac.authorization.k8s.io/calico-node unchanged
service/calico-typha unchanged
deployment.apps/calico-typha unchanged
Warning: policy/v1beta1 PodDisruptionBudget is deprecated in v1.21+, unavailable in v1.25+; use policy/v1 PodDisruptionBudget
poddisruptionbudget.policy/calico-typha configured
daemonset.apps/calico-node configured
serviceaccount/calico-node unchanged
deployment.apps/calico-kube-controllers unchanged
serviceaccount/calico-kube-controllers unchanged
poddisruptionbudget.policy/calico-kube-controllers configured
[M1]等待CNI生效
watch kubectl get pods --all-namespaces
所有Pod狀態為Running後即可退出
Every 2.0s: kubectl get pods --all-namespaces Mon Jul 5 18:49:49 2021
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-kube-controllers-7fc57b95d4-wsvpm 1/1 Running 0 85s
kube-system calico-node-7f99k 0/1 Running 0 85s
kube-system calico-node-jssb6 0/1 Running 0 85s
kube-system calico-node-qgvp9 1/1 Running 0 85s
kube-system coredns-5c98db65d4-6kxg6 1/1 Running 0 44m
kube-system coredns-5c98db65d4-x6x4b 1/1 Running 0 44m
kube-system etcd-kubernetes-master 1/1 Running 0 43m
kube-system etcd-kubernetes-master 1/1 Running 0 39m
kube-system etcd-kubernetes-master 1/1 Running 0 38m
kube-system kube-apiserver-kubernetes-master 1/1 Running 0 43m
kube-system kube-apiserver-kubernetes-master 1/1 Running 0 39m
kube-system kube-apiserver-kubernetes-master 1/1 Running 1 38m
kube-system kube-controller-manager-kubernetes-master 1/1 Running 1 44m
kube-system kube-controller-manager-kubernetes-master 1/1 Running 0 39m
kube-system kube-controller-manager-kubernetes-master 1/1 Running 0 37m
kube-system kube-proxy-hrfgq 1/1 Running 0 39m
kube-system kube-proxy-nlm68 1/1 Running 0 38m
kube-system kube-proxy-tt8dg 1/1 Running 0 44m
kube-system kube-scheduler-kubernetes-master 1/1 Running 1 43m
kube-system kube-scheduler-kubernetes-master 1/1 Running 0 39m
kube-system kube-scheduler-kubernetes-master 1/1 Running 0 37m