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Asked: 2024-09-27T06:26:39+05:30 In: ,

how to instal postgresql on ubuntu

I’m trying to install PostgreSQL on my Ubuntu machine, but I’m running into some issues and could really use some guidance. I understand that PostgreSQL is a powerful relational database management system, and I’m excited to set it up for my project. However, I’m not entirely sure of the steps I need to take to get it running smoothly on Ubuntu.

I’ve seen some tutorials that suggest using the terminal for installation, but I’m not very familiar with command-line operations. Do I need to add any special repositories, or can I just use the default Ubuntu repositories? Also, which version of PostgreSQL is recommended? Should I install any additional packages for management, like pgAdmin?

I’ve also heard that there could be configuration settings I need to adjust after installation. What are the best practices for setting up PostgreSQL securely? If anyone could walk me through the installation process step-by-step or point me to a reliable resource, I would greatly appreciate it. I’m just a bit overwhelmed and want to ensure I set it up correctly from the start. Thank you!

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    2 Answers

    1. Installing PostgreSQL on Ubuntu

      So, you wanna get PostgreSQL on your Ubuntu machine, huh? No worries! It’s not as scary as it sounds. Just follow these steps:

      Step 1: Open your Terminal

      First things first! You gotta open the Terminal. You can find it in your apps or just press Ctrl + Alt + T.

      Step 2: Update your package list

      Before we install anything, let’s make sure your package list is up-to-date. Type this in the terminal and hit Enter:

      sudo apt update

      It might ask for your password. Just type it in (you won’t see anything happen, but it’s still typing!).

      Step 3: Install PostgreSQL

      Now it’s time to install PostgreSQL! Just type this and hit Enter:

      sudo apt install postgresql postgresql-contrib

      The postgresql-contrib part is like the extra toppings on your pizza—adds some useful stuff!

      Step 4: Check if it’s running

      Once it’s done installing, you wanna check if PostgreSQL is running. Just type:

      sudo systemctl status postgresql

      If it says “active (running)”, you’re all set! 🎉

      Step 5: Accessing PostgreSQL

      To start using PostgreSQL, you’ll want to switch to the postgres user (that’s the default user for PostgreSQL). Type:

      sudo -i -u postgres

      Now you’re in the PostgreSQL shell. You can start playing around!

      Step 6: Quit PostgreSQL shell

      When you’re done, just type:

      exit

      And you’re back to your regular terminal.

      That’s it!

      You’ve officially installed PostgreSQL on Ubuntu! You can googling around for more help or check out the official docs when you’re ready to dive deeper. Happy coding!


    2. To install PostgreSQL on Ubuntu, begin by updating the package lists and ensuring your system packages are current. You can achieve this with the command sudo apt update && sudo apt upgrade -y. After that, you can install PostgreSQL by executing sudo apt install postgresql postgresql-contrib -y. This command installs the core database system along with additional utilities and tools that enhance PostgreSQL’s functionality. Once the installation is complete, you can verify the status of the PostgreSQL service with sudo systemctl status postgresql, ensuring that the service is active and running.

      Next, to secure your PostgreSQL setup, switch to the postgres user account created during installation by executing sudo -i -u postgres. From here, you can access the PostgreSQL command-line interface by entering psql. It’s advisable to create a new role with superuser privileges for your applications using createuser --interactive and specifying the desired configurations. For additional security, consider configuring the pg_hba.conf file located at /etc/postgresql//main/ to adjust authentication methods, and remember to restart the PostgreSQL service after making any changes with sudo systemctl restart postgresql.

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