在 kubernetes 中使用 flannel 作为 CNI 我正在尝试实现一个网络,以便在不同的 vagrant vm 上传播 pod 到 pod 的通信。我正在使用这个https://raw.githubusercontent.com/coreos/flannel/v0.9.0/Documentation/kube-flannel.yml来创建法兰绒豆荚。但是 kube-flannel pod 出现 CrashLoopBackOff 错误并且无法启动。
[root@flnode-04 ~]# kubectl get pods -o wide --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE
diamanti-system collectd-v0.5-flnode-04 1/1 Running 0 3h 192.168.30.14 flnode-04
diamanti-system collectd-v0.5-flnode-05 1/1 Running 0 3h 192.168.30.15 flnode-05
diamanti-system collectd-v0.5-flnode-06 1/1 Running 0 3h 192.168.30.16 flnode-06
diamanti-system provisioner-d4kvf 1/1 Running 0 3h 192.168.30.16 flnode-06
kube-system kube-flannel-ds-2kqpv 0/1 CrashLoopBackOff 1 18m 192.168.30.14 flnode-04
kube-system kube-flannel-ds-xgqdm 0/1 CrashLoopBackOff 1 18m 192.168.30.16 flnode-06
kube-system kube-flannel-ds-z59jz 0/1 CrashLoopBackOff 1 18m 192.168.30.15 flnode-05
这是一个 pod 的日志
[root@flnode-04 ~]# kubectl logs kube-flannel-ds-2kqpv --namespace=kube-system
I0327 10:28:44.103425 1 main.go:483] Using interface with name mgmt0 and address 192.168.30.14
I0327 10:28:44.105609 1 main.go:500] Defaulting external address to interface address (192.168.30.14)
I0327 10:28:44.138132 1 kube.go:130] Waiting 10m0s for node controller to sync
I0327 10:28:44.138213 1 kube.go:283] Starting kube subnet manager
I0327 10:28:45.138509 1 kube.go:137] Node controller sync successful
I0327 10:28:45.138588 1 main.go:235] Created subnet manager: Kubernetes Subnet Manager - flnode-04
I0327 10:28:45.138596 1 main.go:238] Installing signal handlers
I0327 10:28:45.138690 1 main.go:348] Found network config - Backend type: vxlan
I0327 10:28:45.138767 1 vxlan.go:119] VXLAN config: VNI=1 Port=0 GBP=false DirectRouting=false
panic: assignment to entry in nil map
goroutine 1 [running]:
github.com/coreos/flannel/subnet/kube.(*kubeSubnetManager).AcquireLease(0xc420010cd0, 0x7f5314399bd0, 0xc420347880, 0xc4202213e0, 0x6, 0xf54, 0xc4202213e0)
/go/src/github.com/coreos/flannel/subnet/kube/kube.go:239 +0x1f7
github.com/coreos/flannel/backend/vxlan.(*VXLANBackend).RegisterNetwork(0xc4200b3480, 0x7f5314399bd0, 0xc420347880, 0xc420010c30, 0xc4200b3480, 0x0, 0x0, 0x4d0181)
/go/src/github.com/coreos/flannel/backend/vxlan/vxlan.go:141 +0x44e
main.main()
/go/src/github.com/coreos/flannel/main.go:278 +0x8ae
法兰绒吊舱进入 CrashLoopBackoff 的确切原因是什么,解决方案是什么?