Its All about Linux

Hello There ! :) i hope you all are doing great. Thanks for stopping by and reading my blog. This is the first time i am writing something offline or online. I am not sure how i will make my blog different then the most of the blog you read online. but i will be honest with my blog means what ever i write, i will try to be more clear and easily understandable for most of the audience.

A little introduction about myself, I am Currently Working in One of the Top MNCs of North America as System Administrator. My Current Domain is Web Hosting i.e E-commerce sites Hosted on Linux Servers.

When i was doing my Engineering, i didn't had any clue what to do in life just like most of youngster :) but i saw ray of interest in Computer Networks during my Final year of Engg.

Why Linux for me ?

I never thought that I would be working on linux as i had more interest towards Computer Networks, but eventually i got shifted to linux due to 2008 Economic break down, as there were no jobs during 2008 period. I also did CCNA from one of the know institute in Metro City to get the job but it was of no use.

Later i did RHCE after almost 1.5 years of gap after CCNA and things started changing for me.Before my Certification i knew only SAMBA service of Linux that only because i did a project on it with one of my friend, that friend introduce me to Linux and now he is working with Windows :) and i am with Linux :D :P life is strange !

So guys, here in this blog i am going to cover lots of things which i learn and still learning while working on E-Commerces domain and its mostly related to Linux Only.

Keep in touch by subscribing the blog and you can mail me for any assistance or if you want to to hire me then also you can contact me on my email id

support@linuxforeveryone.com

Comments

Solution and Step to fix CVE-2019-5736 Vulnerability - Docker

Recently a new vulnerability has been discovered in the the internet market having target to Docker services. What is this Vulnerability: In short, Docker service uses another service called as runc which is container run time to spawn and run containers. which simply means if docker task is to create docker images then runc task would be running them and attaching a process to container. So as per the recent discovery by the maintainers of runc, the code of this service was having some bug which can be used by attackers to gain the root level of access of the host machine on which docker containers are running. How it can be Exploited: This vulnerability can be exploited in two ways (1) if the docker images are in use is vulnerable making the containers build from it vulnerable also (2) if somehow attacker got the access of containers and then trying to exploit using the bug present in runc and trying to get root privileges. Solution to Fix Vulnerability: Ce

How to Generate CSR using Openssl in Linux

Before Generating CSR ,let see what is Openssl. It is nothing but a core library ,which is used for general purpose in cryptography,it is an open source product which work towards the implementation of SSL and TLS protocols. Talking about openssl, some people called the certificates generated from openssl as "self signed certificate". lets go towards now,creating CSR and private key using openssl command, Just log in to any of your Linux box and run following command as root user replacing the required information as per your need . [root@SVR home]# openssl req -new -newkey rsa:2048 -nodes -sha256 -out domain_name.csr -keyout domain_name.key -subj "/C=US/ST=state/L=locality/O=organization/OU=organization unit Dept/CN=www.domain.com" You will get output like : Then check whether ,all the information we have entered ,while creating CSR is proper ,by decoding the CSR from some online tool. First do the cat to the csr file [root@SVR home]# cat

Multiple instances of redis

In the last post I have covered how to install redis server on Centos/Rhel using rpm method and yum method and some troubleshooting skills. In this post i am going to cover how to install and configure redis to run with multiple ports. But why we need more ports ? If you have read my earlier post , you already know that by default redis runs on single port 6379, which any one can use it for small website to cache the data. But for heavy website like magento we need to use additional ports along with 6379 to serve different cache from different ports. Like in Magento there is simple cache which is normally stored under /var/cache directory. Then there is Full Page Cache which is stored under /var/full_page_cache and session cache which is stored under /var/session_cache. Note : Discussion about cache/full page cache/session is not under the scope for this document.

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