https://wiki.lknog.lk/ 2026-05-20T12:57:45+00:00 https://wiki.lknog.lk/ https://wiki.lknog.lk/lib/exe/fetch.php?media=wiki:logo.png text/html 2024-08-16T08:59:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.lknog.lk/doku.php?id=lknog:dnssec&rev=1723798779&do=diff DNS | DNSSEC Date : 13th and 16th August, 2024 Room : Time Schedule Session 1 09:00 - 10:30 Break 10:30 - 11:00 Session 2 11:00 - 12:30 Lunch 12:30 - 13:30 Session 3 13:30 - 15:00 Break 15:00 - 15:30 Session 4 15:30 - 17:30 text/html 2025-07-16T17:34:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.lknog.lk/doku.php?id=lknog:hands-on&rev=1752687290&do=diff Lab VMs Setup In our lab sessions we are assigning some IP ranges for each of you. Please refer to the IP allocation table [<https://ws.learn.ac.lk/wiki/containerization2023Agenda/IPAllocation> here]. First for your computer assign the IP address given as 'Host Machine'. For this workshop we need to create 3 VMs in total. VMs are named as text/html 2025-07-16T17:37:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.lknog.lk/doku.php?id=lknog:hands-on2&rev=1752687473&do=diff Part 1: 'Installing Docker on Ubuntu Server' 1. Update Your System: Ensure your system package database is up-to-date. `sudo apt update` `sudo apt upgrade` 2. Install Docker: Install Docker using the convenience script provided by Docker. `curl -fsSL text/html 2025-07-16T17:41:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.lknog.lk/doku.php?id=lknog:hands-on3&rev=1752687685&do=diff Part 2: What is a Dockerfile? A Dockerfile is a script containing a set of instructions used by Docker to automate the process of building a new container image. It defines the environment inside the container, installs necessary software, sets up commands, and more. text/html 2025-07-16T17:47:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.lknog.lk/doku.php?id=lknog:hands-on4&rev=1752688036&do=diff Part 3: 'What is Docker Compose?' Docker Compose is a tool for defining and running multi-container Docker applications. With Compose, you can define a multi-container application in a single file, then spin up your application with a single command (docker compose up). text/html 2025-07-16T17:53:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.lknog.lk/doku.php?id=lknog:hands-on5&rev=1752688397&do=diff Issuing a Virtual IP to a Service Using MetalLB on Kubernetes MetalLB is a load balancer implementation for bare metal Kubernetes clusters, using L2 advertisements. This tutorial will guide you through the process of setting up MetalLB in your Kubernetes cluster and assigning a virtual IP to a service. text/html 2025-07-16T17:57:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.lknog.lk/doku.php?id=lknog:hands-on6&rev=1752688661&do=diff Monitoring Install helm3 on master node curl -fsSL -o get_helm.sh <https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3> chmod 700 get_helm.sh ./get_helm.sh Add the Helm Stable Charts for your local client. `helm repo add stable <https://charts.helm.sh/stable>` Add prometheus Helm repo helm repo add prometheus-community <https://prometheus-community.github.io/helm-charts> helm search repo prometheus-community text/html 2025-07-16T18:00:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.lknog.lk/doku.php?id=lknog:hands-on7&rev=1752688859&do=diff Kubernetes Deployment Strategies: Rolling Updates and Rollbacks Kubernetes offers robust deployment strategies, allowing for smooth updates and quick rollbacks in case of issues. The most common strategy is the Rolling Update, which incrementally updates Pods with new ones. Let's dive into how to implement Rolling Updates and Rollbacks.