3.部署kubernetes 网络组件

3.部署kubernetes 网络组件

目前主要支持的CNI组件

CNI插件：Flannel、Calico、Weave和Canal(技术上是多个插件的组合)
本次部署，使用Calico组件，可以使用改组件的BGP功能与内网打通Pod和SVC网络

[M1]在Kubernetes集群中部署Calico，在任一Master节点执行即可

下载calico部署文件

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"  #修改为Pod的网络

部署calico

kubectl apply -f calico.yaml

以下为输出

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状态为Running后即可退出

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