![]() ![]() The user request hits the load balancer, then the load balancer distributes the request by creating the number of replicas defined in the deployment.yaml file. A load balancer is used to distribute requests to the various available servers.ĭeployment will act as the intended application. Service - The service acts as the load balancer. protocol: "TCP" port: 6000 targetPort: 5000 type: LoadBalancer So we need to include the two in the requirements.txt file as below: Our application only requires flask and unicorn. In the root directory of the app, create a file named requirements.txt. This file specifies the dependencies needed to run the application. However, with Docker, an app is packaged with all the requirements and dependencies hence a Docker container can run on any platform. Without docker, a developer can send a running code to a tester but upon running, the code might not run on the tester's system. The requirements for an application to run. In the directory of the project, run the command below:ĭEPLOY DOCKER CONTAINER TO KUBERNETES CLUSTERĭocker is an open-source containerization tool that packages applicationsĪ docker container image is a standalone software package that contains all ![]() We will create a simple Flask application that generates random numbers and displays them on a webpage. To create the Flask app, we need to install flask. It levies the deployment team in the manual processes of deployment and scaling applications. It automates the deployment and management of Dockerized applications in cloud platforms. Kubernetes assists in the orchestration of containerized applications to run on a cluster of hosts. ![]() ![]() However, with Docker, an application is packaged with all the requirements and dependencies, hence a Docker container can run on any platform with Docker runtime. Without Docker, a developer can send a running code to a tester, but upon running, the code might not run on the tester’s system. A Docker container image is a standalone software package that contains all the requirements for an application to run. You call follow this guide for the installation procedure.ĭocker is an open-source containerization tool that packages applications into small units called containers. Docker Desktop installed on your computer.A text editor to create the Flask application.You will need the following for the tutorial: To better understand containerization with Docker and Kubernetes, this guide provides an example of developing a simple application, containerizing, and deploying it to a Kubernetes cluster. Containerization involves the packaging of code and its dependencies together. ![]()
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