> ## Documentation Index > Fetch the complete documentation index at: https://notes.kodekloud.com/llms.txt > Use this file to discover all available pages before exploring further. # Demo Installing software in VM > This article provides a tutorial for setting up a DevSecOps environment on an Azure VM, including software installation and deployment of an Nginx application. In this lesson, we'll set up a DevSecOps environment on an Azure Virtual Machine. We’ll install Docker, Kubernetes (kubeadm & kubectl), Jenkins, and Maven, then deploy a simple Nginx application. This end-to-end tutorial is ideal for anyone looking to automate CI/CD in the cloud. ## Verifying Deployment in Azure After your deployment finishes, confirm that all resources (VM, network interfaces, disks, VNet, NSGs, public IP) show a **Succeeded** status: ![The image shows a Microsoft Azure deployment overview page indicating that the deployment is complete, with details of various resources and their statuses. A person is visible in a small video call window.](https://kodekloud.com/kk-media/image/upload/v1752873567/notes-assets/images/DevSecOps-Kubernetes-DevOps-Security-Demo-Installing-software-in-VM/azure-deployment-overview-complete-status.jpg) **Tip:** Use the Azure portal’s search and filter features to quickly locate resources in large subscriptions. ## Configuring a DNS Name Assigning a DNS label to your VM’s public IP makes SSH and service URLs easier to remember: 1. In the Azure portal, go to your **Resource Group**. 2. Select the **Public IP** resource (e.g., `devsecops-cloud-ip`). 3. Under **Configuration**, enter a DNS name label (e.g., `DevSecOpsDemo`). 4. Click **Save**. ![The image shows a Microsoft Azure portal interface displaying the configuration settings for a public IP address named "devsecops-cloud-ip." It includes options for IP address assignment, DNS name label, and alias record sets.](https://kodekloud.com/kk-media/image/upload/v1752873568/notes-assets/images/DevSecOps-Kubernetes-DevOps-Security-Demo-Installing-software-in-VM/azure-portal-public-ip-configuration.jpg) After saving, refresh the VM overview to see the FQDN:\ `DevSecOpsDemo.eastus.cloudapp.azure.com` DNS changes can take a few minutes to propagate. Use `nslookup DevSecOpsDemo.eastus.cloudapp.azure.com` to verify resolution. ## Connecting via SSH Use any SSH client. Here’s an example with MobaXterm: ![The image shows a MobaXterm session settings window, where a user is configuring a Secure Shell (SSH) connection. The interface includes options for entering a remote host, username, and port.](https://kodekloud.com/kk-media/image/upload/v1752873569/notes-assets/images/DevSecOps-Kubernetes-DevOps-Security-Demo-Installing-software-in-VM/mobaxterm-ssh-connection-settings.jpg) * Remote host: `DevSecOpsDemo.eastus.cloudapp.azure.com` * Username: your VM admin (e.g., `devsecops`) Enter your password or SSH key to log in. ## Preparing the VM Switch to the root user to avoid typing `sudo` repeatedly: ```bash theme={null} devsecops@devsecops-cloud:~$ sudo -i root@devsecops-cloud:~# ``` ## Cloning the Demo Repository Download the demo scripts and navigate to the install script directory: ```bash theme={null} root@devsecops-cloud:~# git clone https://github.com/sidd-harth/devsecops-k8s-demo.git root@devsecops-cloud:~# cd devsecops-k8s-demo/setup/vm-install-script/ root@devsecops-cloud:~/devsecops-k8s-demo/setup/vm-install-script# ls -l -rw-r--r-- 1 root root 3024 Jun 14 18:02 install-script.sh ``` ## Running the Install Script The `install-script.sh` automates installation of: | Component | Installation Method | Version | | ---------- | ------------------- | ------- | | Docker | apt | Latest | | Kubernetes | kubeadm, kubectl | v1.20.0 | | Jenkins | apt | 2.289.1 | | Maven | apt | 3.x | Always review scripts from external sources before executing them on production systems. Execute the installer (this may take several minutes): ```bash theme={null} root@devsecops-cloud:~/devsecops-k8s-demo/setup/vm-install-script# bash install-script.sh ... Setting up jenkins (2.289.1) ... ... ``` When finished, confirm your Kubernetes node is ready: ```bash theme={null} root@devsecops-cloud:~# kubectl get node -o wide NAME STATUS ROLES AGE VERSION INTERNAL-IP OS-IMAGE KERNEL-VERSION devsecops-cloud Ready control-plane,master 4m v1.20.0 10.0.0.4 Ubuntu 18.04.5 LTS 5.4.0-1 ``` ## Deploying a Sample Nginx Application 1. Create the Nginx pod: ```bash theme={null} root@devsecops-cloud:~# kubectl run nginx-pod --image=nginx pod/nginx-pod created ``` 2. Check pod status: ```bash theme={null} root@devsecops-cloud:~# kubectl get pods NAME READY STATUS RESTARTS AGE nginx-pod 0/1 ContainerCreating 0 15s ``` Watch until it’s running: ```bash theme={null} root@devsecops-cloud:~# kubectl get pods -w NAME READY STATUS RESTARTS AGE nginx-pod 1/1 Running 0 25s ``` 3. Expose it via a NodePort service: ```bash theme={null} root@devsecops-cloud:~# kubectl expose pod nginx-pod --type=NodePort --port=80 service/nginx-pod exposed root@devsecops-cloud:~# kubectl get svc nginx-pod NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE nginx-pod NodePort 10.96.xxx.xxx 80:32325/TCP 1m ``` 4. In your browser, go to: ```text theme={null} http://DevSecOpsDemo.eastus.cloudapp.azure.com:32325 ``` You should see the default Nginx welcome page. *** Next, we’ll configure a Jenkins pipeline to automate builds and deployments in Kubernetes. ## Links and References * [Azure Virtual Machines Documentation][azure-vm] * [Docker Documentation][docker-docs] * [Kubernetes Basics][k8s-basics] * [Jenkins User Handbook][jenkins-docs] * [Apache Maven Project][maven-docs] [azure-vm]: https://docs.microsoft.com/azure/virtual-machines/ [docker-docs]: https://docs.docker.com/ [k8s-basics]: https://kubernetes.io/docs/concepts/overview/what-is-kubernetes/ [jenkins-docs]: https://www.jenkins.io/doc/ [maven-docs]: https://maven.apache.org/