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Questions tagged [calico]

68 questions
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the PREROUTING rules set by the calico is anywhere

I'm confused. This is my iptables nat table config [root@k8s-51 woniu.zhang]# iptables -t nat -L -v --line-numbers Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes) num pkts bytes target prot opt in out source …
woniu
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Kubernetes Calico networking: calicoctl reports "reset by peer" and "bird: BGP: Unexpected connect from unknown address"

This is a new cluster built using Kubespray on bare metal. The issue that calicoctl reports not Established status, StatefulSet members cannot communicate between each other and majority of Ingress requests take around 10 seconds to open sample…
laimison
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Trying to Install Kubernetes with Vagrant and Ansible on Ubuntu 16.04 lab

So I am trying to install Kubernetes on a lab with Vagrant and Ansible. I am using the following documentation on Ubuntu 16.04: https://kubernetes.io/blog/2019/03/15/kubernetes-setup-using-ansible-and-vagrant/ Several Problems I encounter: The…
R. Barrett
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Kubernetes 1.18.6 : inter pod communication on google cloud custom vm nodes not working

[Problem statement] Ping from pod {busybox-minion1} running on worker1 {named as : minion1} to the pod {busybox-minion2} on worker2 {named as : minion2} is not working. It is a three-node cluster created on google cloud using the below commands…
Umesh
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RedHat 7.6, reboot cause applications listen on tcp6 sockets only

We have some vmware virtual machines with RHEL 7.6 installed, recently all of them got a reboot due data center move location. The problem is, after reboot some applicaiton, such as Java, kube-proxy only listen on tcp6 sockets, which is strange.…
WestFarmer
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For route command output, what does an asterisk under interface column mean?

For my Kubernetes nodes, I see following entry with a star under the interface column. I do not see this mentioned in "route" command's documentation. The only star mentioned there is for gateway. This entry has been created by Calico for the…
user6317694
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Kubernetes with Dual Stack on both Pod and Service level

I have 3 Ubuntu VMs where all of them have 2 interfaces. One interface with v4 address and other with both v4 and v6 address. 3 VMs are reachable from each other on all 3 (2 v4 and 1 v6) addresses. I'm trying to install Kubernetes Cluster with…
R Kaja Mohideen
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Node-to-Node communication doesn't work with Kubernetes with Calico

I'm quite new to Kubernetes, event if it doesn't feel like after I spent dozens of hours trying to setup a working Kubernetes. The edge parameters: 1 master and 3 nodes set up using kubeadm kubernetes version 1.12.1, Calico 3.2 Primary IP addresses…
Daniel Alder
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Windows Node HNS Network Restart Error 0xc0000005

I have a Kubernetes cluster with 2 Linux nodes and 2 Windows Server 2019 running Kubernetes v1.26.0 and Containerd v1.6.20 also Vmware tools version 10.3.2 The Linux nodes are running just fine, but Windows node are misbehaving. This is a new…
Kafiti
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Calico Node and Kube Proxy crashed permanently on a new node

I have a Kubernetes cluster in version 1.25.0 with some nodes (Ubuntu server machines). I use calico from https://raw.githubusercontent.com/projectcalico/calico/v3.26.1/manifests/calico.yaml. Now I am adding a new node. The node is completely…
Tamino Elgert
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cannot download calico on kubernetes cluster

I am trying to set up a kubernetes cluster on centos, and installing calico is one of the steps. My control plane is ready, but coredns are still pending. From the internet, i got the below command to install calico on the network curl…
noob_coder
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Calico : Virtual Network Interfaces not created by calico

I had been using calico-policy-only (v 3.22) mode with kubernetes 1.24.1 in my worker nodes. Recently worker nodes were upgraded to 1.25.4 , so for compatibility we had to upgrade calico as well to ver 3.25. Calico poliy only…
devcodes
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K8S cluster pod can't solve service name if pod on different node from coredns pod

I created a k8s Cluster v1.26.0 with kubeadm and I am using Calico as CNI. I deploy calico with the helm chart and I followed the steps by the Calico official page and chart. The container engine is containerd. The nodes Node are Centos 8 and we…
Peeradis Sa-nguantrakul
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Error While installing Calico CNI

I have a Kubernetes cluster with 1+1 configuration . I used the following steps to install Calico curl https://docs.projectcalico.org/manifests/calico-typha.yaml -o calico.yaml kubectl apply -f calico.yaml But the pods are not…
Anvay
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Calico CNI calio-apiserver issues, on-premises kubeadm based kubernetes v1.24.2 cluster

I am unable to get calico CNI fully functional on a on-premises kubeadm based kubernetes v1.24.2 cluster. The calio-apiserver pods (in the calio-apiserver namespace) have the status "CrashLoopBackOff". I installed calico CNI using the commands below…
Allan K
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