Basic Docker Terminology
In the below post I have tried to cover the basic terms which you will need to understand to start working with Docker. More information and reading refer to Docker Docs. Docker - The docker daemon process running on the host which manages images and containers. This is always referred to as Docker Engine. Container - Its a runtime instance of a docker image. Which consist of Docker image Execution environment Set of instructions Docker Hub - The Docker Hub is a centralized repository with Docker and its components. Which consist of, Docker i…
Basic Docker commands
In this post, I have tried to cover most of the basic commands which are required to start working with Docker. docker –version Get the currently installed version of docker docker pull Pull images from the docker repository(hub.docker.com) docker run Create a container from an image docker start docker stop docker ps list the running containers docker ps -a show all the running and exited containers docker images lists all the locally stored docker images docker rm used to delete a stopped container docker rmi used to delete an image from …
Install Docker on Ubuntu / Pop OS!
In this blog, will demonstrate how to install Docker on Ubuntu. Below is the small post from the official documentation provided by docker and from my experience. To read more on the same refer the official website at Docker Docs The current Docker Engine package is now called docker-ce. Older versions of Docker were called docker, docker.io, or docker-engine. If you really want to use docker for some complex build images I will recommend the below steps to be performed. If you want to try docker for some fun or basics then you can use the …
What are the different type of SSL certificates ?
Certificates format widely accepted, PEM (Privacy Enhanced Mail) Governed by RFCs, it's used preferentially by open-source software. Most common format used for certificates Private Key : YES, Private key in seperate file. Format : Base64 encoded ASCII files Extensions : .cer, .crt, .pem, .key DER (The parent format of PEM.) All types of certificates & private keys can be encoded in DER format. DER formatted certificates when opened in editor do not contain the BEGIN CERTIFICATE or END CERTIFICATE. Private Key …
What is certificate chains and how does certificate chains work.
What is certificate chains? How does certificate chains work? courtesy @ digicert.com What is certificate chains? A certificate chain is an ordered linked list of certificates, it contains an SSL Certificate and Certificate Authority (CA) Certificates, that enable the client to verify that the server and all signing CA's are trustworthy. SSL Certificate : SSL Certificates are small data files that digitally bind a cryptographic key to an organization’s details. SSL Certificates bind together: A dom…
How to change default SSH port on OpenSSH?
How to change default SSH port on OpenSSH? Login to you SSH, SSH into your server as the root user. ssh root@ -p 2200 2. You can find the OpenSSH config file at /etc/ssh/sshd_config 3. You need to edit the file "sshd_config" ( Make sure you have logged in with the root access. ) Locate the Line with has "# Port 22" Change the number part to some other number you want to have. After…
Terminal Color Scheme - Putty/Mintty/xterm/aterm/rxvt/urxvt /gnome terminal
Are you bored of the default/stock old color schemes of the while working on the terminal screens. Here's a easy way to do it graphically, developed by Maciej Ciemborowicz You can do it graphically and download the color schemes and import it to your terminal. Link Here
2-WAY SSL CONFIGURATION WEBLOGIC
What is SSL? SSL (Secure Sockets Layer) is the standard security technology for establishing an encrypted link between a web server and a browser. This link ensures that all data passed between the web server and browsers remain private and integral. SSL is an industry standard and is used by millions of websites in the protection of their online transactions with their customers. To be able to create an SSL connection a web server requires an SSL Certificate. When you choose to activate SSL on your web server you wi…
