Dependency failed for session? WTF?

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Dependency failed for session? WTF?

Tom Horsley-5
Anyone know what this gibberish that shows up in my
logwatch means?

    Dependency failed for Session 10084 of user nvtest.: 1 Time(s)
    Dependency failed for Session 10363 of user nvtest.: 1 Time(s)
...
    Dependency failed for User Manager for UID 25130.: 59 Time(s)
    session-10084.scope: Job session-10084.scope/start failed with result 'dependency'.: 1 Time(s)
    session-10363.scope: Job session-10363.scope/start failed with result 'dependency'.: 1 Time(s)
...
    user-25130.slice: Start request repeated too quickly.: 118 Time(s)
    [hidden email]: Failed at step CGROUP spawning /usr/lib/systemd/systemd: No such file or directory: 196 Time(s)
    [hidden email]: Job [hidden email]/start failed with result 'dependency'.: 59 Time(s)

Notes: User nvtest is UID 25130
tomh> ls -l /usr/lib/systemd/systemd
-rwxr-xr-x 1 root root 1641008 Feb  7 08:05 /usr/lib/systemd/systemd*

The CGROUP error makes no sense because /usr/lib/systemd/systemd clearly
does exist.

User nvtest is used to run testbeds via ssh, all those errors almost
certainly happened when a test run was using my system as a remote
test target and logging in via ssh for each individual test to run
a specific remote program (not a normal shell, though that remote
program usually starts a shell).

Meanwhile, despite all these silly errors in the log, the actual
test run appeared to work fine.

What new nonsense hath systemd wrought?
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Re: Dependency failed for session? WTF?

Rick Stevens-4
On 06/05/2017 04:35 AM, Tom Horsley wrote:

> Anyone know what this gibberish that shows up in my
> logwatch means?
>
>     Dependency failed for Session 10084 of user nvtest.: 1 Time(s)
>     Dependency failed for Session 10363 of user nvtest.: 1 Time(s)
> ...
>     Dependency failed for User Manager for UID 25130.: 59 Time(s)
>     session-10084.scope: Job session-10084.scope/start failed with result 'dependency'.: 1 Time(s)
>     session-10363.scope: Job session-10363.scope/start failed with result 'dependency'.: 1 Time(s)
> ...
>     user-25130.slice: Start request repeated too quickly.: 118 Time(s)
>     [hidden email]: Failed at step CGROUP spawning /usr/lib/systemd/systemd: No such file or directory: 196 Time(s)
>     [hidden email]: Job [hidden email]/start failed with result 'dependency'.: 59 Time(s)
>
> Notes: User nvtest is UID 25130
> tomh> ls -l /usr/lib/systemd/systemd
> -rwxr-xr-x 1 root root 1641008 Feb  7 08:05 /usr/lib/systemd/systemd*
>
> The CGROUP error makes no sense because /usr/lib/systemd/systemd clearly
> does exist.
>
> User nvtest is used to run testbeds via ssh, all those errors almost
> certainly happened when a test run was using my system as a remote
> test target and logging in via ssh for each individual test to run
> a specific remote program (not a normal shell, though that remote
> program usually starts a shell).
>
> Meanwhile, despite all these silly errors in the log, the actual
> test run appeared to work fine.
>
> What new nonsense hath systemd wrought?

Is this stuff running in a container of some sort? There have been
issues with systemd, selinux and containers in the past and CGROUP
errors often point at container creation/promotion issues.
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Re: Dependency failed for session? WTF?

Tom Horsley-5
On Mon, 5 Jun 2017 09:56:34 -0700
Rick Stevens wrote:

> > What new nonsense hath systemd wrought?  
>
> Is this stuff running in a container of some sort? There have been
> issues with systemd, selinux and containers in the past and CGROUP
> errors often point at container creation/promotion issues.

Only if sshd is doing something with a container. I see my
sshd_config file says: "UsePrivilegeSeparation yes" (not sandbox)
and that's the only container-like thing I see in there.

As far as I know, I've been running this stuff for years
and this has never happened till this weekend. But maybe
it always happened and some recent update is now making it
show up in logwatch?
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