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Plesk update fails on Linux: Public key for plesk-php74-*.rpm is not installed

Julian Bonpland Mignaquy
Updated
kb: technical kb: ai-created

Applicable to:

  • Plesk for Linux

Symptoms

  • Plesk update fails with the following error:

    CONFIG_TEXT: Fatal error during packages installation: Public key for plesk-php74-snmp-7.4.33-1centos.7.261021.1344.x86_64.rpm is not installed
    YumGPGCheckError: Public key for plesk-php74-snmp-7.4.33-1centos.7.261021.1344.x86_64.rpm is not installed

Cause

This is a Plesk bug with the ID PPPM-15588: the new package signing key was not declared. It is fixed in Plesk Obsidian 18.0.82.

Resolution

  1. Update Plesk Obsidian to version 18.0.82 or later.
If the update to Plesk Obsidian 18.0.82 fails with the same error, apply the following workaround:
  1. Connect to the server via SSH.

  2. Add PHP 8.3 together with PHP 7.4:

    Note: This installs PHP 8.3 on the server. Do not remove it until the server is updated to Plesk Obsidian 18.0.82 or later, otherwise the error returns on the next update.

    # plesk installer add --components php7.4 php8.3

  3. If the update that failed still has packages to install, run it again:

    # plesk installer update

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