Context:

• magento 2.1.7 community-edition
• composer.phar 1.7.2
• installed and setup on a development server
• then deployed on a production server (dictinct from the previous)

All worked well, including frontend, products, orders, invoice… but we now required to update magento (at least 2.2.0):

• ~/.composer/auth.json set up.
• /home/web/www-preprod is magento root directory (and where composer.json and composer.phar resides)
• composer.phar similar to the one used on the development server

Attempt 1: wizard

Stuck at "readiness check":

Check component Dependency
We found conflicting component dependencies

Attempt 2: CLI

Stuck at any composer update or composer require


php composer.phar update


Loading composer repositories with package information

[Composer\Downloader\TransportException]

The "https://repo.magento.com/packages.json" file could not be downloaded: failed to open stream: Connection refused

update [–prefer-source] [–prefer-dist] [–dry-run] [–dev] [–no-dev] [–lock] [–no-custom-installers] [–no-autoloader] [–no-scripts] [–no-progress] [–no-suggest] [–with-dependencies] [–with-all-dependencies] [-v|vv|vvv|–verbose] [-o|–optimize-autoloader] [-a|–classmap-authoritative] [–apcu-autoloader] [–ignore-platform-reqs] [–prefer-stable] [–prefer-lowest] [-i|–interactive] [–root-reqs] [–] []…

Diagnose

$ php composer.phar diagnose ; echo 'done'; grep wait

Checking composer.json: WARNING

The version field is present, it is recommended to leave it out if the package is published on Packagist.

Defining autoload.psr-0 with an empty namespace prefix is a bad idea for performance

require.magento/product-community-edition : exact version constraints (2.1.7) should be avoided if the package follows semantic versioning

require.composer/composer : unbound version constraints (@alpha) should be avoided

Checking platform settings: WARNING

PHP was compiled with –enable-sigchild which can cause issues on some platforms.

Recompile it without this flag if possible, see also:

https://bugs.php.net/bug.php?id=22999

Checking git settings: OK

Checking http connectivity to packagist: WARNING

[Composer\Downloader\TransportException] The "http://repo.packagist.org/packages.json" file could not be downloaded: failed to open stream: Connection refused

Checking https connectivity to packagist: WARNING

[Composer\Downloader\TransportException] The "https://repo.packagist.org/packages.json" file could not be downloaded: failed to open stream: Connection refused

Checking github.com rate limit: OK

Checking disk free space: OK

Checking pubkeys: Tags Public Key Fingerprint: * Dev Public Key Fingerprint: * OK

Checking composer version: WARNING

You are not running the latest stable version, run composer self-update to update (1.7.2 => 1.8.0)

Composer version: 1.7.2

PHP version: 7.0.32

PHP binary path: /usr/local/php7.0/bin/php

The server cannot reach repo.packagist.org/packages.json through neither http nor https

update -vvv

$ php -f composer.phar update -vvv ; echo 'done'; grep wait

Reading ./composer.json

Loading config file /home/me/.composer/config.json

Loading config file /home/me/.composer/auth.json

Loading config file ./composer.json

Checked CA file /etc/ssl/certs/ca-certificates.crt: valid

Failed to initialize global composer: Composer could not find the config file: /home/me/.composer/composer.json

To initialize a project, please create a composer.json file as described in the https://getcomposer.org/ "Getting Started" section

Reading /home/web/www-preprod/vendor/composer/installed.json

Loading plugin MagentoHackathon\Composer\Magento\Plugin

activate magento plugin

Running 1.7.2 (2018-08-16 16:57:12) with PHP 7.0.32 on Linux / 4.14.66-ovh-vps-grsec-zfs-classid

Loading composer repositories with package information

Downloading https://repo.magento.com/packages.json

Downloading https://repo.magento.com/packages.json

Downloading https://repo.magento.com/packages.json

[Composer\Downloader\TransportException]

The "https://repo.magento.com/packages.json" file could not be downloaded: failed to open stream: Connection refused

Exception trace:

() at phar:///home/web/www-preprod/composer.phar/src/Composer/Util/RemoteFilesystem.php:547

Composer\Util\RemoteFilesystem->get() at phar:///home/web/www-preprod/composer.phar/src/Composer/Util/RemoteFilesystem.php:101

Composer\Util\RemoteFilesystem->getContents() at phar:///home/web/www-preprod/composer.phar/src/Composer/Repository/ComposerRepository.php:682

[… skip some lines for readability …]

Symfony\Component\Console\Application->run() at phar:///home/web/www-preprod/composer.phar/src/Composer/Console/Application.php:103

Composer\Console\Application->run() at phar:///home/web/www-preprod/composer.phar/bin/composer:56

require() at /home/web/www-preprod/composer.phar:24

[…]

Lacking of any credentials, proxy or configuration error: did anyone had this error too? Googling did not show that specific error.

EDIT: Clue: auth.json

Following @sebastian 's comment, to be thorough:

1. I renamed my /home/me/.composer/auth.json.and
2. ran composer.phar global config http-basic.repo.magento.com <public_key>
<private_key> to be sure
3. that command regenerates the file in /home/me/.composer/
4. retrying composer update the very same errors pops up (same stack with -vvv).

Other test: Even without any auth.json, the composer update -vvv ends up identical.

My best clue so far is a server limitation (blacklisted?), I am looking for:
– a solution to run composer update on local .json (since I can wget them)
– getting back the magento 2.1.7 on dev server, upgrading it from there and then re-uploading on prod server

EDIT: Follow-up on local .json

I managed to set composer.json repository to local:

"repositories": [
    {
        "type": "path",
        "url": "/home/web/www-preprod/packages.json"
    }
],

Composer update output:

Problem 1

– The requested package magento/product-community-edition 2.2.0 exists as magento/product-community-edition[2.1.7] but these are rejected by your constraint.

New attempt: set up composer.json by CLI

php composer.phar require magento/community-edition 2.2.0 --no-update

./composer.json has been updated

php composer.phar update 

Loading composer repositories with package information

The "https://repo.packagist.org/packages.json" file could not be downloaded: failed to open stream: Connection refused

https://repo.packagist.org could not be fully loaded, package information was loaded from the local cache and may be out of date

Updating dependencies (including require-dev)

[Composer\Downloader\TransportException]

The "http://repo.packagist.org/p/ramsey/uuid%247189d3afa8232bcec2b8a64e5043b64b57616fd03b0280bd3e9995f5c32d50f8.json" file could not be downloaded: failed to

open stream: Connection refused

[…]

So… Now, how to get and setup local .json from repo.packagist.org?