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

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how to upgrade magento 2.3 from magento 2.2

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

10 steps to upgrade Magento 2.3

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): 

(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

upgrade magento 2.3 successfully

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.

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