![\"How](\"https:\/\/accuweb.cloud\/blog\/wp-content\/uploads\/2024\/02\/How-to-set-up-a-K3s-Kubernetes-Cluster-on-Ubuntu-22.04.png\" "\\"How")
<\/a><\/p>\nTL;DR<\/h3>\n\n- This guide shows how to install a K3s lightweight Kubernetes cluster<\/b> on Ubuntu 22.04 with minimal dependencies.<\/li>\n
- K3s is a lightweight Kubernetes distribution<\/b> ideal for edge, IoT, development, and resource-constrained environments.<\/li>\n
- Start by logging into your Ubuntu server as root or a sudo user and preparing the system.<\/li>\n
- Install K3s using the official install script:
\ncurl -sfL https:\/\/get.k3s.io | sh<\/b>
\nThis automatically sets up a single-node Kubernetes cluster.<\/li>\n- After installation, verify all default Kubernetes objects and services with kubectl get all -n kube-system<\/b>.<\/li>\n
- You can customize your K3s configuration using environment variables during installation (e.g., disabling the built-in Traefik ingress).<\/li>\n
- To uninstall K3s, run the included uninstall script to clean up the cluster and related components.<\/li>\n<\/ul>\n<\/div>\n
In this article, you will find a detailed walkthrough on installing and configuring K3s on Ubuntu.\u00a0 With K3s, it is possible to effortlessly deploy a Kubernetes cluster by utilizing a small binary in minutes.<\/p>\n
What is Kubernetes (K8s)?<\/h2>\n
Kubernetes is a container orchestration that can build, scale, manage, and deploy containerized applications anywhere. K8s is just a General-purpose container distribution, It provides a flexible and scalable platform for building, deploying, and managing applications in a wide variety of environments. Whether you’re running a small application on a single server, or managing a large-scale deployment across multiple clusters, Kubernetes<\/a> can help you streamline your workflow and improve your application’s performance.<\/p>\nWhat is K3s?<\/h2>\n
K3s is a lightweight Kubernetes distribution that comes in a single-binary package. It is designed to be resource-friendly, making it perfect for edge computing, IoT deployments, CI\/CD pipelines, and local development. With easy setup, efficient use of resources, baked-in security, and cross-platform compatibility, K3s offers all the power of Kubernetes in a more lightweight package. Whether you’re a beginner or a seasoned pro, K3s is the perfect choice to bring Kubernetes to your resource-constrained scenarios.<\/p>\n
Before installing\/deploying K3s it is important to have a clear understanding of the difference between K3s and K8s, we recommend reading our blog post titled “K8s VS k3s – what is the difference?” This will provide you with valuable insights that you can consider before installing any Kubernetes distribution.<\/p>\n
To start, the initial setup for the Ubuntu server needs to be executed. Taking a few additional steps will enhance the server’s security<\/a> and usability, providing a strong base for future actions.<\/p>\nManual Installation of K3s<\/h2>\nStep 1: Root Access<\/h3>\n
To log in to your server, you must have access to the server’s public IP address. Furthermore, if you have opted for SSH key authentication, you will need to have either the password or private key linked to the root user account.<\/p>\n
If you are not connected to your server currently, log in as the root user using the following command. Substitute the highlighted your_server_ip portion of the command with your server\u2019s public IP address:<\/p>\n
<\/div>\n\r\n$ ssh root@your_server_ip<\/code><\/pre>\n<\/div>\n![\"Root](\"https:\/\/accuweb.cloud\/blog\/wp-content\/uploads\/2024\/02\/img13.jpg\" "\\"Root")
<\/a><\/p>\n<\/div>\nIf you encounter a warning concerning host authenticity, accept it. When your server uses password authentication, enter your root password for logging in. If you utilize an SSH key that has a passphrase, you may need to input the passphrase during the first usage of the key in each session. In the instance that this is your first time accessing the server with a password, you may need to change the root password. Observe the provided instructions to modify the password if prompted.<\/p>\n
Set Up Your Kubernetes Cluster<\/a><\/strong><\/span> with Enhanced Add-Ons!<\/p>\nStep 2: Create a New User<\/h3>\n
Once you log in as root, you\u2019ll be able to add the new user account. In the future, we\u2019ll log in with this new account instead of root.<\/p>\n
<\/div>\nThis example creates a new user called io_lucas, but you should replace that with a username that you like:<\/p>\n
<\/div>\n\r\n# sudo adduser io_lucas<\/strong><\/code><\/pre>\n<\/div>\n
\ncurl -sfL https:\/\/get.k3s.io | sh<\/b>
\nThis automatically sets up a single-node Kubernetes cluster.<\/li>\n
In this article, you will find a detailed walkthrough on installing and configuring K3s on Ubuntu.\u00a0 With K3s, it is possible to effortlessly deploy a Kubernetes cluster by utilizing a small binary in minutes.<\/p>\n
What is Kubernetes (K8s)?<\/h2>\n
Kubernetes is a container orchestration that can build, scale, manage, and deploy containerized applications anywhere. K8s is just a General-purpose container distribution, It provides a flexible and scalable platform for building, deploying, and managing applications in a wide variety of environments. Whether you’re running a small application on a single server, or managing a large-scale deployment across multiple clusters, Kubernetes<\/a> can help you streamline your workflow and improve your application’s performance.<\/p>\n K3s is a lightweight Kubernetes distribution that comes in a single-binary package. It is designed to be resource-friendly, making it perfect for edge computing, IoT deployments, CI\/CD pipelines, and local development. With easy setup, efficient use of resources, baked-in security, and cross-platform compatibility, K3s offers all the power of Kubernetes in a more lightweight package. Whether you’re a beginner or a seasoned pro, K3s is the perfect choice to bring Kubernetes to your resource-constrained scenarios.<\/p>\n Before installing\/deploying K3s it is important to have a clear understanding of the difference between K3s and K8s, we recommend reading our blog post titled “K8s VS k3s – what is the difference?” This will provide you with valuable insights that you can consider before installing any Kubernetes distribution.<\/p>\n To start, the initial setup for the Ubuntu server needs to be executed. Taking a few additional steps will enhance the server’s security<\/a> and usability, providing a strong base for future actions.<\/p>\n To log in to your server, you must have access to the server’s public IP address. Furthermore, if you have opted for SSH key authentication, you will need to have either the password or private key linked to the root user account.<\/p>\n If you are not connected to your server currently, log in as the root user using the following command. Substitute the highlighted your_server_ip portion of the command with your server\u2019s public IP address:<\/p>\n If you encounter a warning concerning host authenticity, accept it. When your server uses password authentication, enter your root password for logging in. If you utilize an SSH key that has a passphrase, you may need to input the passphrase during the first usage of the key in each session. In the instance that this is your first time accessing the server with a password, you may need to change the root password. Observe the provided instructions to modify the password if prompted.<\/p>\n Set Up Your Kubernetes Cluster<\/a><\/strong><\/span> with Enhanced Add-Ons!<\/p>\n Once you log in as root, you\u2019ll be able to add the new user account. In the future, we\u2019ll log in with this new account instead of root.<\/p>\n This example creates a new user called io_lucas, but you should replace that with a username that you like:<\/p>\nWhat is K3s?<\/h2>\n
Manual Installation of K3s<\/h2>\n
Step 1: Root Access<\/h3>\n
\r\n$ ssh root@your_server_ip<\/code><\/pre>\n<\/a><\/p>\nStep 2: Create a New User<\/h3>\n
\r\n# sudo adduser io_lucas<\/strong><\/code><\/pre>\n