A to Z Tutorial: How to upgrade from Magento 2.2 to Magento 2.3

On November 28, 2018, Magento just released Magento version 2.3 with many new and significant functionality. It’s time for us to upgrade and improve our Magento to be a better one in minutes.
Today, in this tutorial, we will give you A to Z guide for you to upgrade Magento 2.3 from already existing Magento 2.2. With only 10 simple steps, you can successfully immigrate to Magento 2.3 and enjoy all its outstanding revolutions.
** Note: Upgrading to Magento 2.3 is a little bit tricky. Ensure that all your third-party extensions are compatible with the latest version of Magento 2.3. You can download & update it for the same. Don’t forget to take a backup before doing any updates!
Upgrade Magento 2.3 with Command-line upgrade

Step 1: Login server

Log into your Magento Server or switch to the Magento file system

Step 2: Save backup composer.json

Backup the existing composer.json file in the Magento installation directory

Step 3: Manage Packages

1. Remove any unnecessary packages:

$ composer remove --dev sjparkinson/static-review fabpot/php-cs-fixer --no-update

2. Deactivate the Magento Open Source Update (optional):Â

(For upgrading from Magento Open Source to Magento Commerce)
$ composer remove magento/product-community-edition --no-update

3. Specify Magento 2.3 packages

– For Magento 2 Open Source:
$ composer require magento/product-community-edition=2.3.0 --no-update
– For Magento Commerce:
$ composer require magento/product-enterprise-edition=2.3.0 --no-update

4. Specify addition packages

$ composer require --dev phpunit/phpunit:~6.2.0 friendsofphp/php-cs-fixer:~2.10.1 lusitanian/oauth:~0.8.10 pdepend/pdepend:2.5.2 sebastian/phpcpd:~3.0.0 squizlabs/php_codesniffer:3.2.2 --no-update

5. Remove unused packages

composer remove --dev sjparkinson/static-review fabpot/php-cs-fixer --no-update

Step 4: Edit Composer.json autoload

Open composer.json and edit the “autoload”: “psr-4” section to include “Zend\\Mvc\\Controller\\”: “setup/src/Zend/Mvc/Controller/”:

"autoload":
"psr-4": {
"Magento\\Framework\\": "lib/internal/Magento/Framework/",
"Magento\\Setup\\": "setup/src/Magento/Setup/",
"Magento\\": "app/code/Magento/",
"Zend\\Mvc\\Controller\\": "setup/src/Zend/Mvc/Controller/"
},
...
}

Step 5: Modify the Magento updater

=> Backup and remove the old updater
=> Create a Composer project
– For Magento Open Source version 2.3
$ composer create-project --repository=https://repo.magento.com magento/project-community-edition=2.3.0 temp_dir --no-install
– For Magento Commerce version 2.3
$ composer create-project --repository=https://repo.magento.com magento/project-enterprise-edition=2.3.0 temp_dir --no-install
=> Move the new project
$ mkdir update
$ mv temp_dir/update <Magento install dir>/update
$ rm -rf temp_dir

Step 6: Update metadata

=> Update “name”, “version” and “description” fields in <Magento install dir>/composer.json file
=> Apply updates:
$ composer update

Step 7: Clear caches & generate content

=> Clear caches
$ bin/magento cache:clean
=> Generate content:
$ rm -rf <Magento install dir>/var/cache/*
$ rm -rf <Magento install dir>/var/page_cache/*
$ rm -rf <Magento install dir>/generated/code/*

Step 8: Update the database schema & data

$ php bin/magento setup:upgrade

Step 9: Disable maintenance mode

$ php bin/magento maintenance:disable

Step 10: Restart Varnish

$ service varnish restart

That’s all for this tutorial. Hope that you can upgrade your Magento 2.3 easily with our guide. If you have any problem while upgrading Magento, feel free to contact us.

OTHER EXTENSIONS YOU MAYBE INTERESTED IN

Related Posts

Trang Nguyen

Recent Posts

6 Smart Strategies High-Performing Brands Use to Succeed in a Digital Marketing Campaign

Today’s digital landscape is more dynamic and competitive than ever, with countless brands trying to…

2 days ago

Audioenhancer.ai Review: A Must‑Have for Content Creators? | 2025 Guide with Top Features

Audioenhancer.ai Review: High‑quality audio makes videos, podcasts, and voice‑overs sound professional and keeps listeners engaged.…

3 days ago

7 WooCommerce Menu Cart Features That Boost Sales and Improve Checkout

Running an online store takes more than just having nice products because the way your…

3 days ago

10 Ways Tech Candidates Can Make Their Strengths Obvious to Hiring Managers

Can Make Their Strengths Obvious – this is what every tech candidate and developer must…

3 days ago

Why WooCommerce Testing Is Crucial for eCommerce Success in 2025

In the fast-paced world of eCommerce, ensuring your online store operates seamlessly is no longer…

1 week ago

Building Scalable Music Streaming Apps with PWA and Magento Integrations for 10x Growth

Music streaming is more than just about playing songs; it's more about sharing a better…

1 week ago