使用192.168.0.0/16或其他iprange作为kubernetes +法兰绒的Pod cidr [英] Use 192.168.0.0/16 or other iprange as pod cidr for kubernetes + flannel

问题描述

在教程 https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/，它说

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

如何传递其他cidr，例如-pod-network-cidr = 192.168.0.0/16 ?

How to pass other cidr, e.g., --pod-network-cidr=192.168.0.0/16?

推荐答案

按照本教程中的相同步骤进行操作，除了:

Follow the same steps in the tutorial, except:

(1) kubeadm重置后，请清除主节点和从节点上的早期网络接口.

(1) After kubeadm reset, clear earlier net interfaces on both master and slave nodes.

sudo ip link del cni0
sudo ip link del flannel.1
sudo systemctl restart network

(2)运行 kubeadm init --pod-network-cidr = 192.168.0.0/16

(3)下载 kube-flannel.yml 文件，将硬编码的 10.244.0.0 更改为 192.168.0.0 ，然后执行 kubectl create -f kube-flannel.yml .

(3) Download the kube-flannel.yml file, change hard coded 10.244.0.0 to 192.168.0.0, then do kubectl create -f kube-flannel.yml.

测试结果

$ k get po -o=wide
NAME                         READY     STATUS    RESTARTS   AGE       IP             NODE
h2-75cb7756c6-r4gkj          1/1       Running   0          5m        192.168.1.14   slave1
h2-75cb7756c6-xfstk          1/1       Running   0          16m       192.168.0.5    master
jobserver-58bf6985f9-77mdd   1/1       Running   0          16m       192.168.0.6    master
jobserver-58bf6985f9-h9hlx   1/1       Running   0          5m        192.168.1.15   slave1

# ping pod on slave
$ ping 192.168.1.14  
PING 192.168.1.14 (192.168.1.14) 56(84) bytes of data.
64 bytes from 192.168.1.14: icmp_seq=1 ttl=63 time=0.454 ms

# ping pod on master
$ ping 192.168.0.5
PING 192.168.0.5 (192.168.0.5) 56(84) bytes of data.
64 bytes from 192.168.0.5: icmp_seq=1 ttl=64 time=0.143 ms

# ping docker container on the same node
$ ping 172.18.0.2    
PING 172.18.0.2 (172.18.0.2): 56 data bytes
64 bytes from 172.18.0.2: seq=0 ttl=241 time=21.580 ms

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