Uploaded November 2022 | Updated September 2026, 2 weeks ago
Spinning up a Kubernetes HA configuration is made easy with two open source utilities, K3sup and Kube-VIP. Using both of these utilities, we can easily stand up multiple control nodes using a virtual IP address and use the VIP to join the additional nodes to our Kubernetes cluster. For the K3s control nodes, I have spun up (3) Ubuntu Server virtual machines running in VMware vSphere.
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My blog:
virtualizationhowto.com
_____________________________________________________
Social Media:
twitter.com/vspinmaster
LinkedIn:
linkedin.com/in/brandon-lee-vht
Github:
github.com/brandonleegit
Introduction - 0:00
Introduction to K3sup - 0:42
Introduction to Kube-VIP - 1:22
Overview of the installation process for K3sup - 1:57
Getting started curling the K3sup executable and installing - 2:20
Generating your public key pair - 2:47
Discussing the ssh-keygen command - 3:09
Copying the public key to your K3s nodes - 3:22
Running t he ssh-copy-id command - 3:40
Reviewing steps so far - 4:02
Creating the Kubernetes cluster using K3sup - 4:29
Running the K3sup command to create the first node in the cluster - 5:57
Looking at kubectl get nodes command - 6:17
Getting started with Kube-VIP - 6:40
Discussing the RBAC manifest - 7:02
Running the RBAC manifest - 7:36
Pulling the latest Kube-VIP image - 7:47
Creating an alias for the kube-vip command - 8:06
Creating the daemonset for Kube-vip - 8:36
Starting to ping the virtual IP address for Kube-VIP - 9:20
Looking at the daemonsets using kubectl - 9:30
Discussing joining the remaining nodes - 10:09
Running the k3sup join command - 10:30
Discussing the parameters of the k3sup join command - 10:43
Running the k3sup join command - 11:11
Joining the final node - 11:35
Editing our kubeconfig file to point to the virtual IP address - 11:55
Discussing the test of HA for Kubernetes - 12:39
Pinging the virtual IP and disconnecting the network adapter from the control plane node that owns VIP - 13:10
Pings start returning once again - 13:38
Concluding thoughts on Kubernetes HA - 13:49
Read my blog post covering the details of Kube-VIP here:
virtualizationhowto.com/2022/11/kube-vip-configuration-for-k3s-control-plane-ha
Read about automated K3s clusters using K3sup here:
virtualizationhowto.com/2022/11/k3sup-automated-k3s-kubernetes-cluster-install
Traefik ingress example with K3s:
virtualizationhowto.com/2022/05/traefik-ingress-example-yaml-and-setup-in-k3s
Spinning up a Kubernetes HA configuration is made easy with two open source utilities, K3sup and Kube-VIP. Using both of these utilities, we can easily stand up multiple control nodes using a virtual IP address and use the VIP to join the additional nodes to our Kubernetes cluster. For the K3s control nodes, I have spun up (3) Ubuntu Server virtual machines running in VMware vSphere.
Subscribe to the channel: youtube.com/channel/UCrxcWtpd1IGHG9RbD_9380A?sub_confirmation=1
My blog:
virtualizationhowto.com
_____________________________________________________
Social Media:
twitter.com/vspinmaster
LinkedIn:
linkedin.com/in/brandon-lee-vht
Github:
github.com/brandonleegit
Introduction - 0:00
Introduction to K3sup - 0:42
Introduction to Kube-VIP - 1:22
Overview of the installation process for K3sup - 1:57
Getting started curling the K3sup executable and installing - 2:20
Generating your public key pair - 2:47
Discussing the ssh-keygen command - 3:09
Copying the public key to your K3s nodes - 3:22
Running t he ssh-copy-id command - 3:40
Reviewing steps so far - 4:02
Creating the Kubernetes cluster using K3sup - 4:29
Running the K3sup command to create the first node in the cluster - 5:57
Looking at kubectl get nodes command - 6:17
Getting started with Kube-VIP - 6:40
Discussing the RBAC manifest - 7:02
Running the RBAC manifest - 7:36
Pulling the latest Kube-VIP image - 7:47
Creating an alias for the kube-vip command - 8:06
Creating the daemonset for Kube-vip - 8:36
Starting to ping the virtual IP address for Kube-VIP - 9:20
Looking at the daemonsets using kubectl - 9:30
Discussing joining the remaining nodes - 10:09
Running the k3sup join command - 10:30
Discussing the parameters of the k3sup join command - 10:43
Running the k3sup join command - 11:11
Joining the final node - 11:35
Editing our kubeconfig file to point to the virtual IP address - 11:55
Discussing the test of HA for Kubernetes - 12:39
Pinging the virtual IP and disconnecting the network adapter from the control plane node that owns VIP - 13:10
Pings start returning once again - 13:38
Concluding thoughts on Kubernetes HA - 13:49
Read my blog post covering the details of Kube-VIP here:
virtualizationhowto.com/2022/11/kube-vip-configuration-for-k3s-control-plane-ha
Read about automated K3s clusters using K3sup here:
virtualizationhowto.com/2022/11/k3sup-automated-k3s-kubernetes-cluster-install
Traefik ingress example with K3s:
virtualizationhowto.com/2022/05/traefik-ingress-example-yaml-and-setup-in-k3s
