HA K3s with etcd, kube-vip, MetalLB, and Rancher!

High availability Kubernetes is easy to get wrong because you need so many different layers to be HA. The control plane. The data plane. The load balancer. If you're using K3s in a place where you don't have lots of nodes, like a homelab or an edge environment, you want to get the most out of nodes without adding in complex solutions like keepalived, VRRP, or external load balancers. This video will use kube-vip for load balancing the Kubernetes control plane, MetalLB for load balancing Kubernetes services (because kube-vip in hybrid mode wouldn't announce addresses), the embedded etcd for an HA Kubernetes datastore, all for giving Rancher a secure place to run. There are some surprises that we'll work around, like incorrect documentation and tolerations that don't work with taints. These are just part of being a Kubernetes administrator, so grab your Terminal session and let's build a K3s cluster in just a few minutes. GIT REPO: https://gitlab.com/monachus/channel 0:00 - Intro 0:57 - What's K3s? 1:55 - When Do You Need HA? 3:09 - How Does HA in Kubernetes Work? 4:26 - Two Options for HA in K3s 5:06 - The Final Piece: A Load Balancer 6:25 - Putting It All Together 7:15 - Installing K3s with Kube-VIP 8:32 - Kube-VIP RBAC and DaemonSet 11:34 - Installing MetalLB 13:04 - Why Can't We Reach Traefik? 13:49 - Fixing MetalLB's Toleration 14:40 - Installing Rancher 15:19 - Using Rancher's Helm Controller 16:18 - Conclusion and Next Steps LINKS: K3s: https://k3s.io kube-vip: https://kube-vip.io MetalLB: https://metallb.org Rancher: https://rancher.com ===== Want to support what I do? MY GEAR: https://llb.io/xxcim Let's Connect! COMMUNITY: https://community.cncn.io DISCORD: https://llb.io/discord TWITTER: @adriandotgoins INSTAGRAM: @adriandotgoins LINKEDIN:   / adrian-goins   Some of these links are affiliate links. If you buy something through them, I may receive a small commission. This doesn't change the price of what you purchase, but it helps me continue to make the content that you want to see. Thank you for your support!