Questions tagged [weave]

Weave is an open-source overlay network solution for software containers like Docker and kubernetes.

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3 votes
1 answer
696 views

Kubernetes cluster via kubeadm - CoreDNS buffer size too small / Pods network problems

I am new to deploying on-premise Kubernetes clusters. I managed to deploy one using kubeadm with weave CNI. Internet connection inside Pods is somewhat sluggish / non-working. I am trying to deploy ...
0 votes
0 answers
170 views

Pod Stuck in Terminating State Due to iptables 'Chain Already Exists' Error in Kubernetes

I'm facing an unusual issue with a Kubernetes deployment using the Mailu Helm chart, specifically the mailu-front component. After updating the deployment, the newly created pod works fine, but the ...
0 votes
0 answers
79 views

Weave net empty flows for OpenvSwitch

I have 2 containers c1/c2 on 2 separate hosts and I am running Weave Net docker plugin with multicast and fastdp enabled. Both containers can communicate fine on the underlay network both in unicast ...
3 votes
1 answer
9k views

coredns pods stuck in Pending state

I'm trying to learn k8s and since I happen to have access to OpenStack cloud I figured I'll try to install k8s on it, following this wiki. So far I was able to initialize cluster, install weave CNI, ...
0 votes
1 answer
2k views

kubeadm based kubernetes Get "https://10.96.0.1:443/api?timeout=32s": dial tcp 10.96.0.1:443: connect: no route to host

I have deployed a kubeadm based kubernetes cluster v1.24.3 which consists of one control-plane node and 3 worker nodes (all Centos 7 VMs). These are all "on premises" on a single physical ...
-1 votes
1 answer
905 views

Very poor performance on Kubernetes with 100GbE network

we are using ConnectX-5 100GbE ethernet cards on our servers which is connected one to each other trough the mellanox switch. And we are using weavenet cni plugin on our Kubernetes cluster. When we ...
2 votes
0 answers
6k views

Pod coredns stuck in ContainerCreating state with Weave on k8s

First of all, let me thank you for this amazing guide. I'm very new to kubernetes and having a guide like this to follow helps a lot when trying to setup my first cluster! That said, I'm having some ...
1 vote
1 answer
3k views

Unable to deploy Weave CNI - PODs in CrashLoopBackOff state

(This questions has been moved from Stackoverflow) First I apologize for the lengthy entry but I think its better to give as much detail as possible. Host OS: Win10 Guest OS: Ubuntu 20.10 (Groovy) ...
1 vote
1 answer
950 views

Packet fragmentation from within Kubernetes containers

I have a single node Kubernetes cluster running on RHEL 7. I also have a Windows Server 2019 server. Both the Windows and RHEL servers are virtual machines on the same host. When I sit at a command ...
5 votes
1 answer
3k views

Configuring Kubernetes Service as a UPnP Device

Problem I have set up a two-node bare-metal kubernetes cluster configured with weavenet and metallb. I would like services hosted on this cluster to discover and interact with UPnP devices on my home ...
1 vote
0 answers
2k views

Kubernetes: Route egress traffic through different pod

I currently have a docker-compose setup with one container running an OpenVPN client and some containers behind it using --net=container to attach to the network stack of the OpenVPN client container ...
0 votes
1 answer
188 views

New Kubernetes with Weave cluster... All ports except 80 blocked

I have recently set up Kubernetes 1.12.1 with Weave (1 master and 2 hosts on bare metal Ubuntu VMs). I'm trying to make outbound connections from pods to send email (SMTP), but it appears that all ...
0 votes
0 answers
113 views

Adjust timeout of Weave overlay network when getting disconnected

I just ran an experiment to find out how long it takes Weave to recover from a broken connection. In my test setup node A is connected to node B through two paths. Path 1 has one hop and path 2 has ...
0 votes
1 answer
371 views

Retrieving Weave routing information

I am using Weave Net to connect my Docker containers across different hosts. Weave is making use of "Fast Datapath" which handles the routing in Kernel Space (inside the OVS (Open vSwitch) Module as ...
1 vote
0 answers
128 views

How to check weave router ip for k8s nodes?

Every k8s node have individual ip, which is router for all dockers running on it. Is there any way to check by api (k8s, weave, etc...) - ip's of others nodes? I can run of course docker on every ...