caliconode is not ready: BIRD is not ready BGP not established with 172.19.0.1

新的node加入集群后，在启动calico的时候，状态处于running  ready:0/1 

通过describe pod 查看事件，报错：

Warning Unhealthy 5m23s kubelet Readiness probe failed: 2020-12-09 05:51:37.828 [INFO][206] 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 172.19.0.1
Warning Unhealthy 5m13s kubelet Readiness probe failed: 2020-12-09 05:51:47.842 [INFO][270] 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 172.19.0.1

 

调整calicao 网络插件的网卡发现机制，修改IP_AUTODETECTION_METHOD对应的value值。官方提供的yaml文件中，ip识别策略（IPDETECTMETHOD）没有配置，即默认为first-found，这会导致一个网络异常的ip作为nodeIP被注册，从而影响node-to-node mesh。我们可以修改成can-reach或者interface的策略，尝试连接某一个Ready的node的IP，以此选择出正确的IP。

解决：

calico.yaml 文件添加以下二行

- name: IP_AUTODETECTION_METHOD

value: "interface=em.*" # em.*正则表示匹配到em开头的所有网卡

配置如下

- name: CLUSTER_TYPE

value: "k8s,bgp"

- name: IP_AUTODETECTION_METHOD

value: "interface=em.*" #或者 value: "interface=em3"

- name: IP

value: "autodetect"