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Merge pull request #4071 from brandond/fix-rke2-tutorial
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Fix rke2 tutorial
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@btat
btat authored May 4, 2022
2 parents 892f780 + 5a00fe3 commit d2ac60a
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85 changes: 35 additions & 50 deletions content/rancher/v2.6/en/installation/resources/k8s-tutorials/ha-rke2/_index.md
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Expand Up @@ -89,7 +89,7 @@ To use this `kubeconfig` file,

1. Install [kubectl,](https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-kubectl) a Kubernetes command-line tool.
2. Copy the file at `/etc/rancher/rke2/rke2.yaml` and save it to the directory `~/.kube/config` on your local machine.
3. In the kubeconfig file, the `server` directive is defined as localhost. Configure the server as the DNS of your load balancer, referring to port 6443. (The Kubernetes API server will be reached at port 6443, while the Rancher server will be reached at ports 80 and 443.) Here is an example `rke2.yaml`:
3. In the kubeconfig file, the `server` directive is defined as localhost. Configure the server as the DNS of your control-plane load balancer, on port 6443. (The RKE2 Kubernetes API Server uses port 6443, while the Rancher server will be served via the NGINX Ingress on ports 80 and 443.) Here is an example `rke2.yaml`:

```yml
apiVersion: v1
Expand Down Expand Up @@ -128,55 +128,40 @@ Now that you have set up the `kubeconfig` file, you can use `kubectl` to access
Check that all the required pods and containers are healthy are ready to continue:
```
/var/lib/rancher/rke2/bin/kubectl --kubeconfig /etc/rancher/rke2/rke2.yaml get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system etcd-ip-172-31-18-145 1/1 Running 0 4m37s
kube-system etcd-ip-172-31-25-73 1/1 Running 0 20m
kube-system etcd-ip-172-31-31-210 1/1 Running 0 9m12s
kube-system helm-install-rke2-canal-th9k9 0/1 Completed 0 21m
kube-system helm-install-rke2-coredns-6njr6 0/1 Completed 0 21m
kube-system helm-install-rke2-ingress-nginx-vztsd 0/1 Completed 0 21m
kube-system helm-install-rke2-kube-proxy-6std5 0/1 Completed 0 21m
kube-system helm-install-rke2-metrics-server-9sl7m 0/1 Completed 0 21m
kube-system kube-apiserver-ip-172-31-18-145 1/1 Running 0 4m22s
kube-system kube-apiserver-ip-172-31-25-73 1/1 Running 0 20m
kube-system kube-apiserver-ip-172-31-31-210 1/1 Running 0 9m8s
kube-system kube-controller-manager-ip-172-31-18-145 1/1 Running 0 4m8s
kube-system kube-controller-manager-ip-172-31-25-73 1/1 Running 0 21m
kube-system kube-controller-manager-ip-172-31-31-210 1/1 Running 0 8m55s
kube-system kube-proxy-57twm 1/1 Running 0 10m
kube-system kube-proxy-f7pc6 1/1 Running 0 5m24s
kube-system kube-proxy-rj4t5 1/1 Running 0 21m
kube-system kube-scheduler-ip-172-31-18-145 1/1 Running 0 4m15s
kube-system kube-scheduler-ip-172-31-25-73 1/1 Running 0 21m
kube-system kube-scheduler-ip-172-31-31-210 1/1 Running 0 8m48s
kube-system rke2-canal-4x972 2/2 Running 0 10m
kube-system rke2-canal-flh8m 2/2 Running 0 5m24s
kube-system rke2-canal-zfhkr 2/2 Running 0 21m
kube-system rke2-coredns-rke2-coredns-6cd96645d6-cmstq 1/1 Running 0 21m
kube-system rke2-ingress-nginx-controller-54946dd48f-6mp76 1/1 Running 0 20m
kube-system rke2-ingress-nginx-default-backend-5795954f8-p92xx 1/1 Running 0 20m
kube-system rke2-metrics-server-5f9b5757dc-k5sgh 1/1 Running 0 20m
/var/lib/rancher/rke2/bin/kubectl --kubeconfig /etc/rancher/rke2/rke2.yaml get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system cloud-controller-manager-rke2-server-1 1/1 Running 0 2m28s
kube-system cloud-controller-manager-rke2-server-2 1/1 Running 0 61s
kube-system cloud-controller-manager-rke2-server-3 1/1 Running 0 49s
kube-system etcd-rke2-server-1 1/1 Running 0 2m13s
kube-system etcd-rke2-server-2 1/1 Running 0 87s
kube-system etcd-rke2-server-3 1/1 Running 0 56s
kube-system helm-install-rke2-canal-hs6sx 0/1 Completed 0 2m17s
kube-system helm-install-rke2-coredns-xmzm8 0/1 Completed 0 2m17s
kube-system helm-install-rke2-ingress-nginx-flwnl 0/1 Completed 0 2m17s
kube-system helm-install-rke2-metrics-server-7sggn 0/1 Completed 0 2m17s
kube-system kube-apiserver-rke2-server-1 1/1 Running 0 116s
kube-system kube-apiserver-rke2-server-2 1/1 Running 0 66s
kube-system kube-apiserver-rke2-server-3 1/1 Running 0 48s
kube-system kube-controller-manager-rke2-server-1 1/1 Running 0 2m30s
kube-system kube-controller-manager-rke2-server-2 1/1 Running 0 57s
kube-system kube-controller-manager-rke2-server-3 1/1 Running 0 42s
kube-system kube-proxy-rke2-server-1 1/1 Running 0 2m25s
kube-system kube-proxy-rke2-server-2 1/1 Running 0 59s
kube-system kube-proxy-rke2-server-3 1/1 Running 0 85s
kube-system kube-scheduler-rke2-server-1 1/1 Running 0 2m30s
kube-system kube-scheduler-rke2-server-2 1/1 Running 0 57s
kube-system kube-scheduler-rke2-server-3 1/1 Running 0 42s
kube-system rke2-canal-b9lvm 2/2 Running 0 91s
kube-system rke2-canal-khwp2 2/2 Running 0 2m5s
kube-system rke2-canal-swfmq 2/2 Running 0 105s
kube-system rke2-coredns-rke2-coredns-547d5499cb-6tvwb 1/1 Running 0 92s
kube-system rke2-coredns-rke2-coredns-547d5499cb-rdttj 1/1 Running 0 2m8s
kube-system rke2-coredns-rke2-coredns-autoscaler-65c9bb465d-85sq5 1/1 Running 0 2m8s
kube-system rke2-ingress-nginx-controller-69qxc 1/1 Running 0 52s
kube-system rke2-ingress-nginx-controller-7hprp 1/1 Running 0 52s
kube-system rke2-ingress-nginx-controller-x658h 1/1 Running 0 52s
kube-system rke2-metrics-server-6564db4569-vdfkn 1/1 Running 0 66s
```
**Result:** You have confirmed that you can access the cluster with `kubectl` and the RKE2 cluster is running successfully. Now the Rancher management server can be installed on the cluster.
### 5. Configure nginx to be a daemonset
Currently, RKE2 deploys nginx-ingress as a deployment, and that can impact the Rancher deployment so that you cannot use all servers to proxy requests to the Rancher pods.
To rectify that, place the following file in /var/lib/rancher/rke2/server/manifests on any of the server nodes:
```yaml
apiVersion: helm.cattle.io/v1
kind: HelmChartConfig
metadata:
name: rke2-ingress-nginx
namespace: kube-system
spec:
valuesContent: |-
controller:
kind: DaemonSet
daemonset:
useHostPort: true
```

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