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Get Rancher up and running

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Thanks Techno Tim for describing this in details. Saved my life multiple times.

install helm

curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash

add helm repo, stable

 helm repo add rancher-stable https://releases.rancher.com/server-charts/stable

create rancher namespace

kubectl create namespace cattle-system

install cert-manager

kubectl apply --validate=false -f https://github.com/jetstack/cert-manager/releases/download/v1.2.0/cert-manager.crds.yaml

create name-space for cert-manager

kubectl create namespace cert-manager

Add the Jetstack Helm repository

helm repo add jetstack https://charts.jetstack.io

update helm repo

helm repo update

install cert-manager helm chart

*Note: If you receive an “Error: Kubernetes cluster unreachable” message when installing cert-manager, try copying

the contents of “/etc/rancher/k3s/k3s.yaml” to “~/.kube/config” to resolve the issue.*

 helm install  cert-manager jetstack/cert-manager  --namespace cert-manager  --version v1.2.0

check rollout of cert-manager

kubectl get pods --namespace cert-manager

Be sure each pod is fully running before proceeding

Install Rancher with Helm

Note:If you have “.local” for your private TLD then Rancher will NOT finish the setup within the webUI

helm install rancher rancher-stable/rancher  --namespace cattle-system  --set hostname=rancher.example.com

check rollout

kubectl -n cattle-system rollout status deploy/rancher

you should see

1 2 3 4 Waiting for deployment "rancher" rollout to finish: 0 of 3 updated replicas are available... Waiting for deployment "rancher" rollout to finish: 1 of 3 updated replicas are available... Waiting for deployment "rancher" rollout to finish: 2 of 3 updated replicas are available... deployment "rancher" successfully rolled out

check status

kubectl -n cattle-system rollout status deploy/rancher

you should see

deployment "rancher" successfully rolled out

load balancer

If you are using k3s you can use the traefik ingress controller that ships with k3s

run

kubectl get svc --all-namespaces -o wide

look for

kube-system traefik LoadBalancer 10.43.202.72 192.168.100.10 80:32003/TCP,443:32532/TCP 5d23h app=traefik,release=traefik

then create a DNS entry for rancher.example.com 192.168.100.10

This can be a host entry on your machine, or a DNS entry in your local DNS system (router, pi hole, etc…)

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