[systemd-devel] Why working this on reboot but not on start up

[Andrei Borzenkov]

В Thu, 02 Oct 2014 12:53:45 +0200
Günther J. Niederwimmer <gjn at gjn.priv.at> пишет:

> Hello,
> 
> Am Donnerstag, 2. Oktober 2014, 12:38:42 schrieb Lennart Poettering:
> > On Thu, 02.10.14 12:34, Günther J. Niederwimmer (gjn at gjn.priv.at) wrote:
> > > > > this is my construct is any wrong in this files?
> > > > > 
> > > > > /etc/tmpfiles.d/kinit.conf
> > > > > d /run/user/0/krb5cc 1777 root root -
> > > > 
> > > > This won't work. We nowadays mount /run/user/$UID as a tmpfs at the
> > > > time of first login of a user, and unmount it at time of last
> > > > logout. Creating a dir in that directory will hence have little effect
> > > > during runtime, as it will be overmounted as you log in.
> > > 
> > > Is it possible to test if the file / link exist ("/run/user/0/krb5cc/tkt")
> > > with systemd and restart when not.
> > 

Start with redefining kerberos cache to be somewhere else, in a
directory that is known to exist. Like /tmp :) 

> > No, this is not available.
> > 
> > > now I found a way to start kinit on the KVM Clients but not on the Host
> > > :(.
> > 
> > Note that this won't work at all with more recent krb versions as they
> > nowadays use the kernel user keyring to store the tickets in...
> > 
> > But anyway, I am no kerberos guru, I am not sure I grok what you are
> > trying to do.
> 
> I like only to do after reboot or start a kinit -k host/...............
> with a timer. on  the the KVM-Host the kerberos server is a KVM-client.
> 
> I have with sytemctl status kinit a 0/SUCCSESS but no "tkt" file
> 

And couple of posts before you said you had an ERROR ...

How do you check whether tkt file exists? Heck, add ExecStartPost
which does "ls -lr /run/user/0" which at least will prove that this
file existed right after kinit completed. Or not ... 

> Thats all :-(. 
> 
> On a older system I make it with crons extra character "@reboot" but this is 
> no longer working. I can't say way ?
>