Kubernetes flannel pod得到错误的网络

在一个pod中运行的法兰绒获取了错误的子网并且网络不满意，症状是法兰绒从10.105.0.0/16分配到/ 24。它应该从10.105.5.128/21分配/ 26。谢谢你的帮助。Kubernetes flannel pod得到错误的网络

这里是详细信息：

/usr/bin/kubeadm init \ 
--kubernetes-version v1.7.5 \ 
--pod-network-cidr 10.105.5.128/21 \ 
--service-cidr 10.105.5.136/21 \ 
--token XXXXXXXXXXX

KUBE-法兰绒rbac.yml被加载后KUBE-flannel.yml从KUBE-flannel.yml 仅修改后的比特（SubenetLen和网络）：

{ 
    "Network": "10.105.5.128/21", 
    "SubnetLen": 26, 
    "Backend": { 
    "Type": "vxlan" 
    } 
}

DNS在systemd文件设置为：

--cluster-dns=10.105.5.136.10

使用Ubuntu 16.04 LTS和股票内核

这里是泊坞窗daemon.json文件：

{ 
"hosts":[ 
    "fd://", 
    "0.0.0.0" 
], 
"ip-masq":false, 
    "experimental": true, 
"registry-mirrors": [ 
    "http://hub.xyz.com" 
], 
"insecure-registries": [ 
    "http://hub.xyz.com" 
], 
"tls": true, 
"tlsverify": true, 
"tlscacert":"/etc/docker/ca.pem", 
"tlscert":"/etc/docker/cert.pem", 
"tlskey":"/etc/docker/key.pem" 
}

所有kuberentes组件1.7.5从Ubuntu的安装K8S回购

这里是KUBE-绒布容器的日志：

I0926 03:29:10.214198  89 main.go:446] Determining IP address of default interface 
I0926 03:29:10.216166  89 main.go:459] Using interface with name eth0 and address 10.105.5.12 
I0926 03:29:10.216261  89 main.go:476] Defaulting external address to interface address (10.105.5.12) 
I0926 03:29:10.242216  89 kube.go:283] Starting kube subnet manager 
I0926 03:29:10.242055  89 kube.go:130] Waiting 10m0s for node controller to sync 
I0926 03:29:11.242864  89 kube.go:137] Node controller sync successful 
I0926 03:29:11.242957  89 main.go:226] Created subnet manager: Kubernetes Subnet Manager - kube-m2.XXXXX.com 
I0926 03:29:11.242969  89 main.go:229] Installing signal handlers 
I0926 03:29:11.243984  89 main.go:330] Found network config - Backend type: vxlan 
I0926 03:29:11.288902  89 ipmasq.go:51] Adding iptables rule: -s 10.105.0.0/21 -d 10.105.0.0/21 -j RETURN 
I0926 03:29:11.306692  89 ipmasq.go:51] Adding iptables rule: -s 10.105.0.0/21 ! -d 224.0.0.0/4 -j MASQUERADE 
I0926 03:29:11.314413  89 ipmasq.go:51] Adding iptables rule: ! -s 10.105.0.0/21 -d 10.105.0.0/24 -j RETURN 
I0926 03:29:11.323229  89 ipmasq.go:51] Adding iptables rule: ! -s 10.105.0.0/21 -d 10.105.0.0/21 -j MASQUERADE 
I0926 03:29:11.329676  89 main.go:279] Wrote subnet file to /run/flannel/subnet.env 
I0926 03:29:11.329746  89 main.go:284] Finished starting backend. 
I0926 03:29:11.329829  89 vxlan_network.go:56] Watching for L3 misses 
I0926 03:29:11.329903  89 vxlan_network.go:64] Watching for new subnet leases

来源

2017-09-25 ms4720

你以前做过kubeadm重置吗？如果是，请使用检查IP链路ip link

，并检查绒布网络是正确的，如果没有，请使用 ip link delete cni0 ip link delete flannel.1 清洁你的网络设置

祝你好运！

来源

2017-09-29 01:24:49 sam

Kubernetes flannel pod得到错误的网络

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