Merge pull request #3183 from btat/aks

Add install Rancher on AKS
This commit is contained in:
Catherine Luse
2021-05-10 12:55:53 -07:00
committed by GitHub
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---
title: Installing Rancher on Azure Kubernetes Service
shortTitle: AKS
weight: 4
---
This page covers how to install Rancher on Microsoft's Azure Kubernetes Servcice (AKS).
The guide uses command line tools to provision an AKS cluster with an ingress. If you prefer to provision your cluster using the Azure portal, refer to the [official documentation](https://docs.microsoft.com/en-us/azure/aks/kubernetes-walkthrough-portal).
If you already have an AKS Kubernetes cluster, skip to the step about [installing an ingress.](#5-install-an-ingress) Then install the Rancher Helm chart following the instructions on [this page.]({{<baseurl>}}/rancher/v2.5/en/installation/install-rancher-on-k8s/#install-the-rancher-helm-chart)
# Prerequisites
>**Note**
>Deploying to Microsoft Azure will incur charges.
- [Microsoft Azure Account](https://azure.microsoft.com/en-us/free/): A Microsoft Azure Account is required to create resources for deploying Rancher and Kubernetes.
- [Microsoft Azure Subscription](https://docs.microsoft.com/en-us/azure/cost-management-billing/manage/create-subscription#create-a-subscription-in-the-azure-portal): Use this link to follow a tutorial to create a Microsoft Azure subscription if you don't have one yet.
- [Micsoroft Azure Tenant](https://docs.microsoft.com/en-us/azure/active-directory/develop/quickstart-create-new-tenant): Use this link and follow instructions to create a Microsoft Azure tenant.
- Your subscription has sufficient quota for at least 2 vCPUs. For details on Rancher server resource requirements, refer to [this section]({{<baseurl>}}/rancher/v2.5/en/installation/requirements/#rke-and-hosted-kubernetes)
# 1. Prepare your Workstation
Install the following command line tools on your workstation:
- The Azure CLI, **az:** For help, refer to these [installation steps.](https://docs.microsoft.com/en-us/cli/azure/)
- **kubectl:** For help, refer to these [installation steps.](https://kubernetes.io/docs/tasks/tools/#kubectl)
- **helm:** For help, refer to these [installation steps.](https://helm.sh/docs/intro/install/)
# 2. Create a Resource Group
After installing the CLI, you will need to log in with your Azure account.
```
az login
```
Create a [resource group](https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/manage-resource-groups-portal) to hold all relevant resources for your cluster. Use a location that applies to your use case.
```
az group create --name rancher-rg --location eastus
```
# 3. Create the AKS Cluster
To create an AKS cluster, run the following command. Use a VM size that applies to your use case. Refer to [this article](https://docs.microsoft.com/en-us/azure/virtual-machines/sizes) for available sizes and options.
```
az aks create create \
--resource-group rancher-rg
--name rancher-server \
--kubernetes-version 1.18.14 \
--node-count 3 \
--node-vm-size Standard_D2_v3
```
The cluster will take some time to be deployed.
# 4. Get Access Credentials
After the cluster is deployed, get the access credentials.
```
az aks get-credentials --resource-group rancher-rg --name rancher-server
```
This command merges your cluster's credentials into the existing kubeconfig and allows `kubectl` to interact with the cluster.
# 5. Install an Ingress
The cluster needs an Ingress so that Rancher can be accessed from outside the cluster.
The following command installs an `nginx-ingress-controller` with a Kubernetes load balancer service.
```
helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
helm repo update
helm upgrade --install \
ingress-nginx ingress-nginx/ingress-nginx \
--namespace ingress-nginx \
--set controller.service.type=LoadBalancer \
--version 3.12.0 \
--create-namespace
```
# 6. Get Load Balancer IP
To get the address of the load balancer, run:
```
kubectl get service ingress-nginx-controller --namespace=ingress-nginx
```
The result should look similar to the following:
```
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S)
AGE
ingress-nginx-controller LoadBalancer 10.0.116.18 40.31.180.83 80:31229/TCP,443:31050/TCP
67s
```
Save the `EXTERNAL-IP`.
# 7. Set up DNS
External traffic to the Rancher server will need to be directed at the load balancer you created.
Set up a DNS to point at the `EXTERNAL-IP` that you saved. This DNS will be used as the Rancher server URL.
There are many valid ways to set up the DNS. For help, refer to the [Azure DNS documentation](https://docs.microsoft.com/en-us/azure/dns/)
# 8. Install the Rancher Helm Chart
Next, install the Rancher Helm chart by following the instructions on [this page.]({{<baseurl>}}/rancher/v2.5/en/installation/install-rancher-on-k8s/#install-the-rancher-helm-chart) The Helm instructions are the same for installing Rancher on any Kubernetes distribution.
Use that DNS name from the previous step as the Rancher server URL when you install Rancher. It can be passed in as a Helm option. For example, if the DNS name is `rancher.my.org`, you could run the Helm installation command with the option `--set hostname=rancher.my.org`.