法兰绒经常重启

Question

节点上的法兰绒总是重新启动。

记录如下：

root@debian:~# docker logs faa668852544
I0425 07:14:37.721766       1 main.go:514] Determining IP address of default interface
I0425 07:14:37.724855       1 main.go:527] Using interface with name eth0 and address 192.168.50.19
I0425 07:14:37.815135       1 main.go:544] Defaulting external address to interface address (192.168.50.19)
E0425 07:15:07.825910       1 main.go:241] Failed to create SubnetManager: error retrieving pod spec for 'kube-system/kube-flannel-ds-arm-bg9rn': Get https://10.96.0.1:443/api/v1/namespaces/kube-system/pods/kube-flannel-ds-arm-bg9rn: dial tcp 10.96.0.1:443: i/o timeout

主配置：ubuntu: 16.04

节点：

embedded system with debian rootfs(linux4.9).
kubernetes version:v1.14.1
docker version：18.09
flannel version：v0.11.0

我希望法兰绒在节点上运行正常。

Answer 1

首先，要使法兰绒正常工作，你必须将--pod-network-cidr=10.244.0.0/16传递给kubeadm init。

kubeadm init --pod-network-cidr=10.244.0.0/16

通过运行将/proc/sys/net/bridge/bridge-nf-call-iptables设置为1

sysctl net.bridge.bridge-nf-call-iptables=1 

接下来是创建clusterrole和clusterrolebinding

如下：

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml