K8S集群Calico网络组件报错BIRD is not ready: BGP not established with
K8S集群中Calico组件的Pod状态一直处于Running未就绪的状态，报错内容如下
Warning Unhealthy 47s kubelet Readiness probe failed: 2022-06-17 12:58:06.092 [INFO][119] confd/health.go 180: Number of node(s) with BGP peering established = 0
calico/node is not ready: BIRD is not ready: BGP not established with 192.168.146.138,192.168.146.139
产生该报错的原因是Node节点上出现了冲突的网卡，将有问题的网卡删除后，Calico组件的Pod就能正常启动了。
异常的网卡命名都是以br开头的，我们来查询所有以br开头的网卡。
ip link | grep br-
6: br-8a2d6b85084d: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default
147: vethe273e59@if146: <BROADCAST,MULTICAST,UP,LOWER_UP>