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How to upgrade PHP composer on a Plesk server

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Alex Davydov
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Plesk for Linux kb: how-to ABT: Group B

Applicable to:

  • Plesk for Linux

Question

How to upgrade PHP composer on a Plesk server?

Answer

Instructions for CentOS/RHEL/CloudLinux

  1. Connect to the server via SSH

  2. Check what version is currently used:

    Note: replace X.X with the current PHP version and <Version> with the desired composer version.

    # /opt/plesk/php/X.X/bin/php /usr/lib64/plesk-9.0/composer.phar --version

  3. Update or downgrade to the specified version:

    # /opt/plesk/php/X.X/bin/php /usr/lib64/plesk-9.0/composer.phar self-update <Version>

    Note: In case the command above does not work, use the below one:
    /opt/plesk/php/X.X/bin/php /usr/local/psa/var/modules/composer/composer.phar selfupdate --2

For example:

# /opt/plesk/php/7.3/bin/php /usr/lib64/plesk-9.0/composer.phar self-update 2.0.8
Upgrading to version 2.0.8 (stable channel).

Instructions for Debian/Ubuntu

  1. Connect to the server via SSH

  2. Check what version is currently used:

    Note: replace X.X with the current PHP version and <Version> with the desired composer version.

    # /opt/plesk/php/X.X/bin/php /usr/lib/plesk-9.0/composer.phar --version

  3. Update or downgrade to the specified version:

    # /opt/plesk/php/X.X/bin/php /usr/lib/plesk-9.0/composer.phar self-update <Version>

    Note: In case the command above does not work, use the below one:
    /opt/plesk/php/X.X/bin/php /usr/local/psa/var/modules/composer/composer.phar selfupdate --2

For example:

# /opt/plesk/php/7.3/bin/php /usr/lib/plesk-9.0/composer.phar self-update 2.0.8
Upgrading to version 2.0.8 (stable channel).

Comments

2 comments

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    Marc Broers

    We've been trying to upgrade our composer but executing the described documentation doesn't actually upgrade the composer of the Plesk Composer module.

    After a lot of research, the following command did the job (change the php version accordingly):

    /opt/plesk/php/8.0/bin/php /usr/local/psa/var/modules/composer/composer.phar selfupdate --2
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  • Avatar
    Alex Davydov

    Marc Broers Thank you for the provided information. This detail was added into the article.

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