Question
Is it possible to install Plesk on Ubuntu 20.04?
Answer
Plesk now supports Ubuntu 20.04 LTS (Focal Fossa) starting from Plesk Obsidian 18.0.29
However, keep in mind the following limitations:
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Ubuntu 20.04 ships with OpenSSL which does not support TLSv1.1 and below. Because of that: TLSv1 and TLSv1.1 ciphers cannot be enabled on services via server_pref command;
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psa-watchdog component is not available, since it requires a major update to use TLSv1.2 or higher;
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The following components are deprecated or EOLed by Plesk or their respective vendors: mod_bw ( deprecated ), php <= 7.0 ( EOLed );
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Atomic (tortix) ModSecurity ruleset is not available because Atomic doesn’t support Ubuntu 20.04 yet;
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Ubuntu 20.04 LTS is no longer supported on the ARM architecture, use Ubuntu 22.04 LTS instead.
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Connection to the server might be interrupted the first time Plesk Firewall rules are activated;
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There are warnings about fail2ban and spamassassin services from systemd in the logs which can be ignored:
PIDFile= references path below legacy directory /var/run/
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Time synchronization is not available on Tools & Settings > System Time because Ubuntu 20.04 uses chronyd service (enabled by default) for time synchronization. Same as on CentOS 8 and Debian 10;
Note: Time synchronization can be configured manually by installing the NTP Timesync extension.
Additional Information
- See also Plesk Supported Operating Systems