Installation fails: “It seems there is a user with UID=110 in this system”

Created:

2016-11-16 13:15:52 UTC

Modified:

2017-04-24 11:18:08 UTC

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Installation fails: “It seems there is a user with UID=110 in this system”

Applicable to:

  • Plesk 11.0 for Linux
  • Plesk 11.5 for Linux

Symptoms

Installation of Plesk on fresh Ubuntu server fails:

Checking for the user "popuser"...

ERROR: It seems there is a user with UID=110 in this system, but PSA needs the same UID
for its operation.
Unfortunately, this situation has not yet been resolved.
Please visit http://sp.parallels.com/support for assistance.

Another user is already assigned UID 110 on the server:

# grep 110 /etc/passwd
mysql:x:110:117:MySQL Server,,,:/var/lib/mysql:/bin/false

Cause

Plesk requires that user popuser is assigned the ID 110. If another user with UID 110 already exists on the server, Plesk installation fails.

Resolution

Resolution 1. Before Plesk installation, change the FIRST_SYSTEM_UID value in /etc/adduser.conf from 100 to 111 :

# grep FIRST_SYSTEM_UID /etc/adduser.conf
FIRST_SYSTEM_UID=111

and change the SYS_UID_MIN value in /etc/login.defs from 100 to 111 :

# grep SYS_UID_MIN /etc/login.defs
SYS_UID_MIN 111

On Parallels Virtuozzo Containers, OS template can be patched to have all new containers set up with fixed configuration:

  1. Go to OS template configuration directory:

    /vz/template/ubuntu/12.04/x86_64/config/os/default
  2. Open script post-cache and add following lines before the last line of the script (starts with " popd "):

    sed -i 's/FIRST_SYSTEM_UID=100/FIRST_SYSTEM_UID=111/g' $rootdir/etc/adduser.conf
    sed -i 's/^#*SYS_UID_MIN.*100/SYS_UID_MIN 111/' $rootdir/etc/login.defs
  3. Rebuild OS template cache:

    vzpkg remove cache ubuntu-12.04-x86_64
    vzpkg create cache ubuntu-12.04-x86_64

    NOTE: This operation will not affect already existing containers.

Resolution 2. Change the ID of the existing user:

usermod --uid NEW_ID mysql

Additional information

#115002006569 Mailman can't send messages to subscribers showing error in maillog

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