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systemd services fail to start with PrivateTmp set to true and the OS has symbolic linked /var/tmp.

This document (7018508) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server 12 Service Pack 1 (SLES 12 SP1)
SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2)


On system with symlinked /var/tmp, if systemd.service has PrivateTmp=true configured, the service fails to start.

For instance, ntpd service has the following configuration (/usr/lib/systemd/system/ntpd.service)
ExecStart=/usr/sbin/start-ntpd start
and if the system has /var/tmp symbolic-linked to /tmp, starting ntpd.service would give following error:
sles12-06011:~ # systemctl start ntpd.service
Job for ntpd.service failed. See "systemctl status ntpd.service" and "journalctl -xn" for details.
Looking at the details:
sles12-06011:~ # systemctl status -l ntpd.service
ntpd.service - NTP Server Daemon
   Loaded: loaded (/etc/systemd/system/ntpd.service; disabled)
  Drop-In: /run/systemd/generator/ntpd.service.d
   Active: activating (auto-restart) (Result: exit-code) since Wed 2017-01-11 10:55:10 SGT; 6s ago
     Docs: man:ntpd(1)
  Process: 1974 ExecStart=/usr/sbin/start-ntpd start (code=exited, status=226/NAMESPACE)

Jan 11 10:55:10 systemd[1]: ntpd.service: control process exited, code=exited status=226
Jan 11 10:55:10 systemd[1]: Failed to start NTP Server Daemon.
Jan 11 10:55:10 systemd[1]: Unit ntpd.service entered failed state.


Please open a service request to receive a program temporary fix (PTF) until a regular maintenance is available.


PrivateTmp option makes a new filesystem namespace (CLONE_NEWNS) at clone(2) time for ntpd and mounts private (--make-private) /tmp and /var/tmp directories therein.  When /var/tmp is a symlink to /tmp, this breaks.


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  • Document ID:7018508
  • Creation Date: 23-Jan-2017
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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