[Bug 1828892] [NEW] systemctl - alias service reports inactive while aliased is active

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Ubuntu Foundations Team Bug Bot (crichton):

[Impact]

'systemctl is-active' command reports an alias service as inactive even though the aliased service
is active.
Currently the 'systemctl is-active' command does not load units to minimise its effect on the system (i.e. that a monitoring command does not itself alter the state of the system).
However, this behaviour leads to inconsistencies when services are aliased.

[Test case]

- Test case 1 - libvirtd

alias service : libvirtd
aliased service : libvirt-bin

/etc/systemd/system$ ls -la libvirtd.service 
lrwxrwxrwx 1 root root 39 May 13 20:49 libvirtd.service -> /lib/systemd/system/libvirt-bin.service

$ systemctl is-active libvirtd
inactive

$ systemctl is-active libvirt-bin
active


- Test case 2 - sshd

alias service : sshd
aliased service : ssh

/ect/systemd/system$ ls -la sshd.service 
lrwxrwxrwx 1 root root 31 Mar 19 19:44 sshd.service -> /lib/systemd/system/ssh.service

$ systemctl is-active sshd
inactive

$ systemctl is-active ssh
active


[Regression Potential]

This fix may result into systemctl reporting inconsistent information
concerning the status of a service.

[Other]

Upstream issue : https://github.com/systemd/systemd/issues/7875
Upstream fix : https://github.com/systemd/systemd/pull/7997

Xenial is affected, fix exists on Bionic onward.

$ lsb_release -rd
Description:	Ubuntu 16.04.6 LTS
Release:	16.04

$ apt-cache policy systemd
systemd:
  Installed: 229-4ubuntu21.21
  Candidate: 229-4ubuntu21.21

** Affects: systemd (Ubuntu)
     Importance: Medium
     Assignee: Ioanna Alifieraki (joalif)
         Status: In Progress

** Affects: systemd (Ubuntu Xenial)
     Importance: Medium
     Assignee: Ioanna Alifieraki (joalif)
         Status: In Progress


** Tags: patch sts
-- 
systemctl - alias service reports inactive while aliased is active
https://bugs.launchpad.net/bugs/1828892
You received this bug notification because you are a member of Ubuntu Sponsors Team, which is subscribed to the bug report.