How did I upgrade earosacoustic.com from Magento 2.0.2 to 2.2.2?

Administration Upgrade
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Step 1

bin/magento maintenance:enable

I upgraded third-party packages and ensured that it does not break the website:

composer self-update
composer clear-cache
rm -f composer.lock
composer update --prefer-source

bin/magento setup:upgrade
rm -rf var/generation var/cache var/log var/page_cache var/view_preprocessed
bin/magento setup:di:compile

find var/* -type f -or -type d | grep -v 'session' | xargs rm -rf
rm -rf pub/static/* 
bin/magento setup:static-content:deploy
bin/magento indexer:reindex
bin/magento cron:run

Step 2

I have installed the MDVA-532 patch: magento.com/tech-resources/download#download1892
It is recommended here: devdocs.magento.com/guides/v2.0/release-notes/tech_bull_21-upgrade.html#tb-upgr-nosamp

Step 3

I have upgraded Magento from 2.0.2 to 2.0.17 first.

Step 3.1

composer require magento/product-community-edition 2.0.17 --no-update
composer update --prefer-source

Step 3.2

chmod u+x bin/magento

It fixes the «Permission denied» failure on a «bin/magento» command.

Step 3.3

rm -rf var/generation var/cache var/log var/page_cache var/view_preprocessed

It fixes failures like this: «Argument 1 passed to Magento\Framework\Url\HostChecker::__construct() must implement interface Magento\Framework\Url\ScopeResolverInterface, instance of Magento\Framework\ObjectManager\ObjectManager given».

Step 3.4

bin/magento setup:upgrade

Step 3.5

rm -rf var/generation var/cache var/log var/page_cache var/view_preprocessed
bin/magento setup:di:compile

Step 3.6

How to fix «Unable to process binding “css: function (){return { empty:cart().summary_count == 0} }”» / «Message: cart is not a function»?

Step 3.7

find var/* -type f -or -type d | grep -v 'session' | xargs rm -rf
rm -rf pub/static/* 
bin/magento setup:static-content:deploy
bin/magento indexer:reindex
bin/magento cron:run

Step 4

Then, I upgraded Magento from 2.0.17 to 2.1.11.

Step 4.1

composer require magento/product-community-edition 2.1.11 --no-update
composer update --prefer-source

Step 4.2

chmod u+x bin/magento

It fixes the «Permission denied» failure on a «bin/magento» command.

Step 4.3

rm -rf var/generation var/cache var/log var/page_cache var/view_preprocessed

It fixes failures like this: «Argument 1 passed to Magento\Framework\Url\HostChecker::__construct() must implement interface Magento\Framework\Url\ScopeResolverInterface, instance of Magento\Framework\ObjectManager\ObjectManager given».

Step 4.4

bin/magento setup:upgrade

Step 4.5

rm -rf var/generation var/cache var/log var/page_cache var/view_preprocessed
bin/magento setup:di:compile

Step 4.6

How to fix «Overriding view file app/design/frontend/<package>/<theme>/Magento_Checkout/layout/override/theme/Magento/blank/checkout_index_index.xml does not match to any of the files»?

Step 4.7

How to fix «Unable to process binding “if: function (){return maxCartItemsToDisplay < getCartLineItemsCount() }” Message: maxCartItemsToDisplay is not defined»?

Step 4.8

Why are the product titles disappeared after upgrading a Blank-based design theme from Magento 2.0.x to 2.1.x?

Step 4.9

find var/* -type f -or -type d | grep -v 'session' | xargs rm -rf
rm -rf pub/static/* 
bin/magento setup:static-content:deploy
bin/magento indexer:reindex
bin/magento cron:run

Step 4.10

How to fix the «Array to string conversion in Magento/Framework/DB/Adapter/Pdo/Mysql.php on line 2929» failure on a shipping address saving on the frontend checkoput page in Magento 2.1.x?How to fix the «Array to string conversion in Magento/Framework/DB/Adapter/Pdo/Mysql.php on line 2929» failure on a shipping address saving on the frontend checkoput page in Magento 2.1.x?

Step 5

Then, I upgraded PHP to 7.1.13.
How do I install PHP 7.1 FPM and CLI for Magento 2 to Debian 8 (Jessie)?

Step 6

Then, I upgraded Magento from 2.1.11 to 2.2.2.

Step 6.1

How to fix the «Class MagePal\GmailSmtpApp\Model\Transport contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Magento\Framework\Mail\TransportInterface::getMessage)» Magento 2.2 issue?

Step 6.2

composer require magento/product-community-edition 2.2.2 --no-update
composer update --prefer-source

Step 6.3

chmod u+x bin/magento

It fixes the «Permission denied» failure on a «bin/magento» command.

Step 6.4

rm -rf var/generation var/cache var/log var/page_cache var/view_preprocessed

It fixes failures like this: «Argument 1 passed to Magento\Framework\Url\HostChecker::__construct() must implement interface Magento\Framework\Url\ScopeResolverInterface, instance of Magento\Framework\ObjectManager\ObjectManager given».

Step 6.5

bin/magento setup:upgrade

Step 6.6

rm -rf var/generation var/cache var/log var/page_cache var/view_preprocessed
bin/magento setup:di:compile

Step 6.7

How to fix «Element ‘link’, attribute ‘href’: The attribute ‘href’ is not allowed» / «The attribute ‘src’ is required but missing» after upgrading Magento to 2.2?

Step 6.8

How to fix «Element ‘block’, attribute ‘class’: [facet ‘pattern’] The value ‘\Magento\Framework\View\Element\Template’ is not accepted by the pattern [A-Z][_a-zA-Z\d]*(\\[A-Z][_a-zA-Z\d]*)*» after upgrading Magento to 2.2?

Step 6.9

OrangeHill Article: How to fix the «Invalid Document» / «Element ‘resource’: The attribute ‘title’ is required but missing» failure in Magento to 2.2?

Step 6.10

I have updated my Blank-inherited design theme:
The theme.js and responsive.js files of the Blank design theme has been moved to the Magento_Theme folder since Magento 2.2.

Step 6.11

How to fix «Element ‘item’: This element is not expected» after upgrading Magento to 2.2?

Step 7.

bin/magento maintenance:disable
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See also: