卸载flannel插件

kubectl delete -f kube-flannel.yml  #此yml文件是部署flannel时的文件
kubectl get pod -n kube-system | grep flannel

之后重启所有k8s节点的node
确认没有flannel.1网卡之后再安装calico

安装calico

获取资源清单文件

mkdir /data/kubernetes/network/calico -p
cd /data/kubernetes/network/calico/
wget https://docs.tigera.io/archive/v3.22/manifests/calico.yaml
cp calico.yaml{,.bak}

配置资源清单文件

vim calico.yaml
            - name: CALICO_IPV4POOL_CIDR   
              value: "10.244.0.0/16"    #配置pod的网段范围，Calico 使用的 IPv4 地址池，即 Kubernetes Pod 可以分配的 


kubectl apply -f calico.yaml
kubectl get pod -n kube-system
NAME                                       READY   STATUS    RESTARTS        AGE
calico-kube-controllers-5bb5d4f7f4-dlb6j   1/1     Running   0               5m36s
calico-node-9zkw8                          1/1     Running   0               5m36s
calico-node-f2z6x                          1/1     Running   0               5m36s
calico-node-sj94j                          1/1     Running   0               5m36s
coredns-64897985d-v9kjz                    1/1     Running   1 (146m ago)    3d22h
coredns-64897985d-wdqr7                    1/1     Running   1 (146m ago)    3d22h
etcd-master01                              1/1     Running   2 (7m23s ago)   3d22h
kube-apiserver-master01                    1/1     Running   2 (7m13s ago)   3d22h
kube-controller-manager-master01           1/1     Running   2 (7m23s ago)   3d22h
kube-proxy-79b87                           1/1     Running   2 (6m13s ago)   3d22h
kube-proxy-7l4ff                           1/1     Running   2 (6m18s ago)   3d22h
kube-proxy-glxrc                           1/1     Running   2 (7m23s ago)   3d22h
kube-scheduler-master01                    1/1     Running   2 (7m23s ago)   3d22h

部署完成之后每个节点上都有多个进程，分别来处理不同的功能

ps aux | egrep 'NAME | calico'
root      3458  0.0  0.0 112724   996 pts/0    S+   13:11   0:00 grep -E --color=auto NAME | calico
root     27594  6.6  0.5 1744868 47112 ?       Sl   13:03   0:32 calico-node -felix
root     27595  0.0  0.4 1375440 37736 ?       Sl   13:03   0:00 calico-node -allocate-tunnel-addrs
root     27596  0.1  0.4 1301964 38052 ?       Sl   13:03   0:00 calico-node -monitor-addresses
root     27598  0.1  0.4 1375696 38624 ?       Sl   13:03   0:00 calico-node -confd
root     27600  0.0  0.4 1375184 33552 ?       Sl   13:03   0:00 calico-node -monitor-token
root     27601  0.1  0.4 1301708 38644 ?       Sl   13:03   0:00 calico-node -status-reporter

安装calicoctl命令

wget https://github.com/projectcalico/calico/releases/download/v3.22.5/calicoctl-linux-amd64
mv  calicoctl-linux-amd64 /usr/local/bin/calicoctl
chmod +x /usr/local/bin/calicoctl
将calico整合到kubectl里面:
cp -p calicoctl kubectl-calico

命令的基本演示:

kubectl calico node status  /  calicoctl node status  #两者命令相同，不整合到kubectl里面也可以
Calico process is running.

IPv4 BGP status
+-----------------+-------------------+-------+----------+-------------+
|  PEER ADDRESS   |     PEER TYPE     | STATE |  SINCE   |    INFO     |
+-----------------+-------------------+-------+----------+-------------+
| 100.100.137.201 | node-to-node mesh | up    | 05:03:38 | Established |
| 100.100.137.202 | node-to-node mesh | up    | 05:03:38 | Established |
+-----------------+-------------------+-------+----------+-------------+

IPv6 BGP status
No IPv6 peers found.