Author: Rahul

When working with Firebase Storage, you may need to configure Cross-Origin Resource Sharing (CORS) to allow web applications from different origins to access your resources. Here’s a quick guide on how to set it up. Setup CORS for Firebase Storage: Step-by-Step Guide Follow the step by step instructions to apply CORS policy on Firebase storage. Step 1: Install gsutil First, you need to install the gsutil tool. This tool helps you manage your Google Cloud Storage. You can download and install it by following the instructions on Google Cloud’s official page. Step 2: Log In with Your Credentials After installing…

Running a shell script from your computer on a remote server using SSH is very useful. This is especially true for system administrators and developers who need to manage servers far away. For example, imagine you are a system administrator. You need to update software on many servers that are not in the same location as you. Instead of logging into each server one by one, you can use a shell script to do this job for all servers at once. This saves you a lot of time and effort. Here is a simple guide to show you how to…

Today, many IT workers need to connect to servers from far away. They use SSH tunnels to do this securely. But sometimes, the network isn’t stable, and the connection can drop. This is where Autossh can help. Autossh makes sure your SSH connection stays up, even if the network goes down for a bit. For example, imagine you are working from home and need to connect to a server at your office. If the internet at your home has problems, the SSH connection can break. Autossh will automatically reconnect you if this happens. In this article, we will show you…

The internet works well because it can send data securely, thanks to things like Transport Layer Security (TLS). TLS is the newer version of Secure Sockets Layer (SSL) and it helps keep web traffic safe. This article will talk about TLS 1.3 and 1.2, which are better and faster than the older versions. One popular web server that uses these protocols is Apache. But, to make sure your Apache server only uses TLS 1.3 and 1.2, you need to set it up in a certain way. This guide will show you how to configure your Apache server to only allow…

The Ubuntu team has once again kept their promise and released a new long-term support version, Ubuntu 24.04 (Noble Numbat), which comes with many great features. After installing it, setting up the network interface is an important first step for users. Usually, the system automatically gets an IP address from DHCP, but sometimes you might need to set up a static IP address. A static IP address does not change even when the system restarts, which is very helpful for managing networks and running servers. This guide will show you how to set up a static IP address on Ubuntu…

Git tags are like bookmarks for specific points in your project’s history. Imagine you’re reading a book and you use a bookmark to mark a particular page you found interesting or important. Later, you can easily go back to that page without having to flip through the entire book. This quick tutorial will help you to clone specific tag in git repository. This can be helpful, when you want code from specific point or some of users preferred the tag based deployments. How to Clone Git Tags Here is the step by guide to clone a specific git tag on…

MySQL is one of the most popular open-source relational database management systems. It is still very common database among the developers. This is highly robust and scalable, like any software, you may also face the errors. One such error, especially in high-traffic systems, is “ERROR 1040 (08004): Too many connections”. Let’s explore this error in detail, understand its causes, and look at possible solutions. What is this Error? This is a common error occurs when all available MySQL connections limit reached and more requests are made. MySQL server has a configuration setting named max_connections that dictates how many simultaneous connections…

How to verify nagios configuration files? The following command will do it for you to verify Nagios configuration file: /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg Verify Nagios Configuration File Nagios is a popular tool used for monitoring systems, networks, and infrastructure. It helps keep track of various services and hosts to ensure everything runs smoothly. One important task when using Nagios is verifying that the configuration files are set up correctly. This is where you can use the following command to verify the Nagios configuration files on the go: /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg This command is used to check the Nagios configuration file for…

Dig stands for Domain Information Groper and is a tool used to look up information in Domain Name Systems through command lines. It’s really helpful for network administrators when they need to solve problems related to DNS. With Dig, they can quickly find out which servers are connected to a specific domain and check if the DNS records are set up correctly. This helps use managing and monitoring the network more efficient. The default Windows systems doesn’t provides dig command line tool, but still you can add it to your systems. This tutorial will help you to install dig command…

Imagine you and a friend are working together to build a website for a bakery. You want to keep the main version of the website running smoothly while you try out new features like adding a gallery of cakes or an online order form. This is where Git branches come in handy. They help you manage different versions of the website without affecting the live version that your customers see. The popular Git Flow model recommends naming branches like this: main develop feature release hotfix In this model, ‘main’ and ‘develop’ are the main branches. The other branches, ‘feature’, ‘release’,…