Docker Tutorials: Detached (-d) mode in Docker – Explained
We use Docker detached mode (-d) when we want to connect to the container in an interactive mode or we can say when we just want application…
Docker Tutorials: Image – Creating a docker image using scratch
You can use Docker’s reserved, minimal image, scratch, as a starting point for building containers. Using the scratch “image” signals to the build process that you want the next command…
Docker Tutorials: Image – Creating Docker Image Step by Step
Setting up the prerequisites Listing images on the host If you do not have ubuntu:14.04 images, please download it using following commands. Verify the ubuntu:14.0 image by…
Docker Tutorials: Image – Dockerfile to Build a Fedora Container
The administrator may decide that building interactively is tedious and error-prone. Instead the administrator could create a Dockerfile that layers on the Apache Web server and the…
Docker Tutorials: Differences between a VM image and a Docker image?
These are some differences between a docker and a VM image which I could list out: 1. Snapshot process is faster in Docker than VMs We generally…
Docker Tutorials: Where is the Docker daemon log
It depends on your OS. Here are the few locations, with commands for few Operating Systems: Ubuntu – /var/log/upstart/docker.log Boot2Docker – /var/log/docker.log Debian GNU/Linux – /var/log/daemon.log CentOS – /var/log/daemon.log | grep…
Docker Tutorials: How is Docker different from a virtual machine?
Through this post we are going to draw some lines of differences between VMs and LXCs. Lets first define them. VM:A virtual machine emulates a physical computing…
Docker Tutorials: What is Docker?
Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. Docker is a platform for developers and sysadmins to develop,…
Docker Tutorials: Difference between docker attach and docker exec
Attach The docker attach command allows you to attach to a running container using the container’s ID or name, either to view its ongoing output or to…
Docker Tutorials: docker events commands & examples
Docker Events Types? Docker containers will report the following events:attach, commit, copy, create, destroy, detach, die, exec_create, exec_detach, exec_start, export, kill, oom, pause, rename, resize, restart, start,…
Docker Tutorials: Docker Architecture and How it works?
Docker architecture consists of several components that work together to provide a platform for building, shipping, and running containers. These components include: In summary, Docker architecture consists…
Datadog Assignment & Project
Question of Datadog Agents Write down post on www.debug.school for the following questions… Question of Infra Monitoring Question of Log Analysis Preparation
How to upload Package to Nexus using jenkins Pipeline
https://support.sonatype.com/hc/en-us/articles/227256688-How-do-I-configure-the-Nexus-Jenkins-Plugin Scripted Pipeline
How to display selenium html report using jenkins pipeline?
Step 1 – Install seleniumhtmlreport https://plugins.jenkins.io/seleniumhtmlreport/ Step 2 – Use following code
MySQL Commands & Query Cheatsheet Example
List All Users in a MySQL Database Server Are you looking for the MySQL SHOW USERS command? Unfortunately, MySQL does not have the SHOW USERS command like…
Datadog Tutorials: Datadog Agent integration with mysql databases?
How to setup Datadog Agent integration with mysql to collect many metrics from MySQL databases? The Datadog Agent can collect many metrics from MySQL databases, including (but…
AWS Assignment
Part – 1: General AWS Assignment: Computing AWS Lab & Exercise: VPC – Virtual Private Cloud Assignment AWS Cloudformation Lab and Assignment AWS Storage Write an answer…
Jenkins Tutorials: Scripted Pipeline jenkinsfile example
Pipeline: Basic Steps catchError: Catch error and set build result to failure deleteDir: Recursively delete the current directory from the workspace dir: Change current directory echo: Print…
Maven Tutorials: Maven Lifecycle, Phases & Goal
What is Lifecycle? A life cycle is a series of stages a living thing goes through during its life. All plants and animals go through life cycles….
XL Release Tutorials: Pattern and deliveries in XL Release
Patterns Patterns in XL Release is like a template but for Delivery. What is Deliveries? Deliveries are flows of stages that a set of tracked items must…