使用tigera-operator方式安装的calico，启动后报错，所有的calico相关的pod都显示CrashLoopBackoff。kubectl-ncalico-systemdescribepodcalico-node-2t8w6，发现如下报错：Readinessprobefailed:calico/nodeisnotready:BIRDisnotready:ErrorqueryingBIRD:unabletoconnecttoBIRDv4socket:dialunix/var/run/calico/bird.ctl:connect:nosuchfileordirectory.问题原