Applicable to:
- Plesk Onyx for Linux
- Plesk for Linux
Symptoms
Plesk installation or upgrade on Ubuntu/Debian OS fails with the following error:
PLESK_ERROR: Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming.
The following packages have unmet dependencies:
apache2 : Depends: apache2.2-common (= 2.2.22-13+deb7u3) but it is not going to be installed
apache2-mpm-prefork : Depends: apache2.2-common (= 2.2.22-13+deb7u3) but it is not going to be installed
Depends: apache2.2-bin (= 2.2.22-13+deb7u3) but it is not going to be installed
mysql-server : Depends: mysql-server-5.5 but it is not going to be installed
plesk-base : Depends: sw-engine (>= 2.13.8) but it is not going to be installed
plesk-core : Depends: libcurl3 (>= 7.16.2) but it is not going to be installed
awstats : Depends: perl:any
libapache2-mod-bw : Depends: apache2-api-20120211
libapache2-mod-perl2 : Depends: apache2-api-20120211
Depends: libxslt1.1 (>= 1.1.25) but it is not installable
Depends: libmyodbc but it is not installable
Depends: xsltproc but it is not installable
Depends: libtimedate-perl but it is not installable
or
PLESK_ERROR: The apg-get failed with the following message: Reading package lists... Building dependency tree... Reading state information... You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: apache2 :
Depends: apache2-bin (= 2.4.18-2ubuntu3.9) but 2.4.18-2ubuntu3.8 is to be installed
Depends: apache2-data (= 2.4.18-2ubuntu3.9) but 2.4.18-2ubuntu3.8 is to be installed linux-image-virtual:
Depends: linux-image-4.4.0-128-generic but it is not going to be installed plesk-service-node-utilities:
Depends: libidn2-0 (>= 0.6) but it is not going to be installed
Also the following error may appear:
PLESK_ERROR: Enabled repositories check
Plesk installation requires 'Ubuntu/xenial-updates/main' OS repository to be enabled.
Make sure it is available and enabled, then try again.
Cause
Non-standard repositories enabled in /etc/apt/sources.list file that Plesk is not compatible with, so a system cannot resolve all the dependencies properly.
Resolution
Warning: If Ubuntu 14 is being used, make sure that the repositories configured are specific to the Trusty version
-
Connect to the server via SSH.
-
Replace all contents of the file
/etc/apt/sources.listwith the default content, like below:Default sources.list for:
Ubuntu 20.04 LTS:CONFIG_TEXT: deb http://archive.ubuntu.com/ubuntu focal main restricted universe
deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe
deb http://security.ubuntu.com/ubuntu focal-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu focal partnerUbuntu 18.04 LTS:CONFIG_TEXT: deb http://archive.ubuntu.com/ubuntu bionic main restricted universe
deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted universe
deb http://security.ubuntu.com/ubuntu bionic-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu bionic partnerUbuntu 16.04 LTS:CONFIG_TEXT: deb http://archive.ubuntu.com/ubuntu xenial main restricted universe
deb http://archive.ubuntu.com/ubuntu xenial-updates main restricted universe
deb http://security.ubuntu.com/ubuntu xenial-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu xenial partnerDebian 10.x:CONFIG_TEXT: deb http://ftp.debian.org/debian buster main contrib non-free
deb http://ftp.debian.org/debian buster-updates main contrib non-free
deb http://security.debian.org buster/updates main contrib non-freeor:
CONFIG_TEXT: deb http://deb.debian.org/debian/ buster main non-free contrib
deb http://security.debian.org/debian-security buster/updates main contrib non-free
deb http://deb.debian.org/debian/ buster-updates main contrib non-freeDebian 9.x:CONFIG_TEXT: deb http://ftp.debian.org/debian stretch main contrib non-free
deb http://ftp.debian.org/debian stretch-updates main contrib non-free
deb http://security.debian.org stretch/updates main contrib non-free -
Update package lists and install missing dependencies:
# apt-get update
# apt-get -f install -
Run Plesk installation / update / upgrade.
Comments
6 comments
Hi How can I do this in Debian 8? Any solution please
Hello Sam Smith
In your case update doesn't work because Debian 8 has reached End-of-life.
The recommendation is to perform migration to a server with a newer update: https://support.plesk.com/hc/en-us/articles/213912645
Alternatively, perform dist-upgrade first: https://support.plesk.com/hc/en-us/articles/213410369.
The 2nd option is considered as riskier and a server snapshot before upgrade is recommended.
Hi @...,
I am facing this error even after correcting the sources.list file:
===============
Make sure it is available and enabled, then try again.
=============
Current Plesk version is Version 17.5.3. I am upgrading to "Plesk Obsidian 18.0.31".
What ever I do, I can not get Plesk installed on the right way on Ubuntu 20.04. The repositories don't work, the scripts don't work. I am getting very simple of just an install. Why is there not one single install that ever works on a Linux variant? Is there some one who is having Plesk running on Ubuntu 20.04 without problems and so, what did you do?
I have a similar problem in CENTOS
Hello, @Yosef Chaim Yom Tov
Since CentOS uses a completely different package manager, the the error will be non-identical. At this point, I'd recommend searching it against the KB or creating a support ticket.
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