Pandas is a free and open source Python library released under the BSD license. Originally developed by Wes McKinney in 2008, and supported by companies like Intel and Nvidia, it is targeted at data analysis and manipulation. It can be easily used to read and write data from a variety of sources such as Excel spreadsheets, Comma-separated Values (CSV) files, and many more.
database
How to Install etcd on Ubuntu
Etcd is a free and open-source distributed and secure key-value store used to store the most critical information of a given distributed system. Etcd is written in Go making it extremely fast in distributed systems without incurring a performance overhead from clustered machines. In this guide, you discover the basics of installing and setting up an etcd cluster on Ubuntu systems.
Mysql server has gone away – Fix
The MySQL server has gone away error can occur when you have an established connection to the MySQL server and for one reason or another, the connection times out or otherwise goes down. In the context of a Linux system, the error can sometimes be seen from the MySQL client. In this tutorial, we will show several solutions for dealing with and troubleshooting the MySQL error.
Ubuntu 22.04 PostgreSQL Installation
PostgreSQL is a database management system, similar to MySQL in many respects but with some key differences. Like MySQL, it’s commonly hosted on Linux. In this guide, we’ll show how to run a PostgreSQL server on Ubuntu 22.04 Jammy Jellyfish, as well as installing the client version in case you just need to connect to an external PostgreSQL database.
Using Python to Parse JSON
The objective of this article is to describe how to parse JSON data in Python.
MySQL: Allow root remote access
The purpose of this tutorial is to show how to access MySQL remotely with the root account. Conventional security practice is to disable remote access for the root account, but it is very simple to turn on that access in a Linux system.
MySQL: Allow all hosts
If you wish to access your MySQL server remotely, it will be necessary to configure one or more users to allow access from remote hosts. If you do not know all the IP addresses of the connecting hosts, then you can simply allow connections from all hosts.
MySQL: Allow empty password
If you have installed MySQL on your Linux system and need to have one or more users with an empty password, it is possible to either create new users with empty passwords or reset an existing user’s password to being empty.
MySQL: Allow user to create database
After installing MySQL on your Linux system, you can create one or more users and grant them permissions to do things like create databases, access table data, etc.
MySQL: Allow user access to database
After installing MySQL on your Linux system and creating a new database, you will need to setup a new user to access that database, granting it permissions to read and/or write data to it.
MySQL: Allow access from specific IP address
If you need to allow remote access to your MySQL server, a good security practice is to only allow access from one or more specific IP addresses. This way, you are not needlessly exposing an attack vector to the entire internet.
MySQL: Allow remote connections
After installing a MySQL server on a Linux system, by default it will only accept incoming connections from itself (i.e. the loopback address 127.0.0.1).