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Questions tagged [flannel]

flannel (originally rudder) is an etcd backed network fabric for containers, an overlay network that gives a subnet to each machine for use with Kubernetes

253 questions
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Flannel and docker don't start

I'm trying to set up a kubernetes cluster on 2 nodes , centos 7.1 using this guide. However when I attempt to start the services on the minion like so: for SERVICES in kube-proxy kubelet docker flanneld; do systemctl restart $SERVICES …
Jonathan
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K8s coredns and flannel nameserver limit exceeded

i have been trying to setup k8s in a single node,everything was installed fine. but when i check the status of my kube-system pods, CNI -> flannel pod has crashed, reason -> Nameserver limits were exceeded, some nameservers have been omitted, the…
Sriram Arvind Lakshmanakumar
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Master can't connect to cluster

After a cluster upgrade, one of three masters can't connect back to the cluster. I have a HA cluster running in us-east-1a, us-east-1b and us-east-1c, my master that is running in us-east-1a can't join back to the cluster. I tried to scale down the…
gersonmdesouza
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How to fix Flannel CNI plugin. Error: [plugin flannel does not support config version ""]

While installing Kubernetes with, I'm stuck at CNI plugin installation and configuration part. I have installed Flannel but I see error in kubelet logs due to which coredns pods are in pending state. OS: Centos7 k8s version: 1.16 Kubeadm is being…
Himanshu C
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how to delete/remove calico cni from my kubernetes cluster

I have installed my kubernetes cluster(1master, 3worker)in the digital ocean. The problem is I installed both flannel and calico in this cluster. I want to remove the calico completely from my cluster or is it ok to have multiple CNI?
AATHITH RAJENDRAN
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kubernetes master 6443 connection refused from other hosts

I can't seem to get a node to join the cluster. [discovery] Trying to connect to API Server "10.0.2.15:6443" [discovery] Created cluster-info discovery client, requesting info from "https://10.0.2.15:6443" I0702 11:09:08.268102 10342…
Chris Stryczynski
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Kube-Flannel cant get CIDR although PodCIDR available on node

currently I am setting up Kubernetes on a 1 Master 2 Node enviorement. I succesfully initialized the Master and added the nodes to the Cluster kubectl get nodes When I joined the Nodes to the cluster, the kube-proxy pod started succesfully, but the…
rootdoot
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Kubernetes flannel network does not work as expected

I encounter a very strange kubernetes network issue with kubeadm installation with flannel. Could you please help? I have 3 nodes, 1 for master, 2 for minion nodes.and has 4 pods are running. list all nodes(added a column # to simplify…
Bo Wang
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Kubernetes overlay network comparison

I was wondering if someone could give me a brief overview of the differences/ advantages between all of the different Kubernetes network overlays. The getting started guide (http://kubernetes.io/docs/getting-started-guides/scratch/#network) mentions…
David Newswanger
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Is there any way to bind K3s / flannel to another interface?

I have a K3s (v1.20.4+k3s1) cluster with 3 nodes, each with two interfaces. The default interface has a public IP, the second one a 10.190.1.0 address. I installed K3s with and without the -flannel-backend=none option and then deployed flannel via "…
oss648
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Kubernetes cluster "cni config uninitialized"

The problem i'm running into is very similar to the other existing post, except they all have the same solution therefore im creating a new thread. The Problem: The Master node is still in "NotReady" status after installing Flannel. Expected…
Hexalogy
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what is the difference between l2 cni plugin vs l3 plugin?

what is the difference between l2 cni plugin vs l3 cni plugin? Does L2 CNI plugin doesn't provide public access to the pods?What are the examples of L2 and L3 plugins
Bharath Thiruveedula
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Kubernetes nodes behind NAT service exposure

I'm trying get a Kubernetes cluster working with some nodes working behind NAT without public IP address. (Why i need it is a different story) There are 3 nodes: Kubernetes cluster master (with public IP address) Node1 (with public IP…
mennanov
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Kubernetes kube-apiserver is not reachable from nodes/podes via ClusterIP (:443).

I'm new to k8s and trying to run 3-nodes (master + 2 workers) cluster (v1.9.6) in Vagrant (Ubuntu 16.04) from scratch without any automation. I believe this is a right way to get hands-on experience for the beginner like me. To be honest, I've…
Roman T.
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Flannel installation on Kubernetes

I have installed fresh Kubernetes 1.6.2 master on a single host and now trying to start Flannel using https://github.com/coreos/flannel/blob/master/Documentation/kube-flannel.yml The pod does not come up: $ kubectl get pods kube-flannel-ds-l6gn4…
Misko
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