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Docker loses the connection in an attempt to modify the Plesk Firewall rules

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Ivan Kamnev
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Plesk Onyx for Linux kb: bug ABT: Group A

Applicable to:

  • Plesk Onyx for Linux

Symptoms

  • The Docker extension and Plesk Firewall are installed on the server.
  • In an attempt to modify rules in Plesk Firewall, the configured Docker firewall rules in the FORWARD chain are deleted:

    # iptables -v -S FORWARD | grep docker
    #

Cause

This is a Plesk bug with ID #PPPM-7924, which will be fixed in future Plesk updates.

Resolution

As a workaround apply the steps below: 

  1. Log into Plesk.
  2. Go to Tools & Settings > Services Management.
  3. Restart the Docker service by pressing the highlighted button as on the screenshot below:
    mceclip1.png

 

Solution using the SSH access
  1. Log into the server via SSH.
  2. Restart the Docker service by executing the command below:

    # service docker restart

Comments

6 comments

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  • Avatar
    Stefan Bättig

    Is there any news on when this issue will be resolved?

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    Ivan Postnikov

    Hello @Stefan,

    Currently, there is no exact ETA. After there will any news, the article will be updated.

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    Denis Romaniuk

    Wouldn't be easier to make auto restart of the docker-service while iptables is updated?
    I see no difference, because it is being processed manually anyway....

    And it anyway better than down of dockerized site

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    Denis Bykov

    @Denis

    This may be considered for #PPPM-7924 resolution, however, the final implementation is yet to be decided.

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    Mitchell van Bijleveld

    This still is not fixed on Ubuntu 20.04?

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    Ivan Postnikov

    Hello Mitchell van Bijleveld

    In general, Plesk updates include the same fixed across all the supported OS.

    As for the issue in question, it's indeed yet to be fixed. The suggested workaround is to be used for now.

    Thank you for understanding.

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