Domain does not work on PHP-FPM on Plesk: 503 service unavailable




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    Cornelia Mühlich

    I had this issue and solved it like it is discribed.

    The question is now: How did that happen and how to prevent it? As I logged into the plesk panel it showed me that several packages were updated. Could that have been the reason?

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    Alexandr Redikultsev

    Hi @Cornelia Mühlich.

    Maybe there was a hung PHP process that was terminated by the actions mentioned in the article.

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    Cornelia Mühlich

    Possible. But in that case I can't prevent it to happen again... Next time it happens I'll check for that. Thank you (:

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    First Resolution doesn't work for us (Onyx Plesk 17.5 - Debian 8).

    Second Resolution via SSH is a bit an overkill.
    When there are many domains on a server this will take a while.
    Is there any possibility to use this only for one domain?

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    Artyom Baranov


    Hello! I see that you have already submitted a request to support in regards to your questions.

    I believe they will find a solution soon.

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    Artyom Baranov

    @Cirrus Tecnologia,

    Hello! No, the issue described in this article is caused by the corrupted or missing configuration file while the issue from the mentioned article is caused by PHP 7.3 bugs.

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    Got this same issue the moment after Plesk Migrator finished working. I had one website transfered from one server to another, and that migration caousd this symthoms and it took 30% of my websites down. Any update on making sure that this does not happen?


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    Alexandr Nikolaenko

    Hello @spanovic,

    Migration is a quite complex process and there are might be various causes of occurred behaviour. Most probably PHP re-configuration process was interrupted due to some reason. However, a thorough investigation anyway is required to define the root cause.
    You can submit a ticket for us or use a server-wide workaround from the article.

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