Re: [X2Go-User] Can't install X2goserver on Debian 9

[Mihai Moldovan]

* On 03/15/2018 01:16 AM, Nigra Truo wrote:
> [SOLVED]
> 
> I figured out what the culprit is. This is an older system and the intent to
> purge was based on the assumption that some old config or other depricated
> element might be still hanging around. So doing this here:
> 
> apt purge x2goserver x2goserver-common x2goserver-dbgsym x2goserver-extensions
> x2goserver-fmbindings x2goserver-printing x2goserver-pyhoca 
> x2goserver-x2goagent
> x2goserver-xsession libx2go-log-perl libx2go-server-db-perl 
> libx2go-server-perl
> 
> Fixes it. It removes all traces of x2go from the server, only when you
> especially mention each and every one package and purge it does it work, for
> example the users are contained in the x2goserver-common package, if you just 
> do
> a purge of x2goserver alone, that leaves most things still on the system.
> This gives you the possibility to wipe the slate clean and install it like it
> was a brand new linux install.

Oh, indeed, you should have purged both x2goserver and x2goserver-common...
maybe also the old db packages.

It looks like in your original message, apt-get only tried to purge these 
packages:

The following packages will be REMOVED:
  x2goserver* x2goserver-extensions* x2goserver-fmbindings* x2goserver-printing*
x2goserver-xsession*

So definitely not everything, for instance x2goserver-common is missing there.



Mihai



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Re: [X2Go-User] Can't install X2goserver on Debian 9

[Nigra Truo]

[SOLVED]

I figured out what the culprit is. This is an older system and the intent
to purge was based on the assumption that some old config or other
depricated element might be still hanging around. So doing this here:

apt purge x2goserver x2goserver-common x2goserver-dbgsym
x2goserver-extensions x2goserver-fmbindings x2goserver-printing
x2goserver-pyhoca x2goserver-x2goagent x2goserver-xsession libx2go-log-perl
libx2go-server-db-perl libx2go-server-perl

Fixes it. It removes all traces of x2go from the server, only when you
especially mention each and every one package and purge it does it work,
for example the users are contained in the x2goserver-common package, if
you just do a purge of x2goserver alone, that leaves most things still on
the system.
This gives you the possibility to wipe the slate clean and install it like
it was a brand new linux install.

Thanks for your assistance in solving this, I use X2go every day on my
server and was pretty lost without it.

Markus


On Wed, Mar 14, 2018 at 4:47 PM, Nigra Truo  wrote:

> Or asked otherwise:
> Where is */etc/x2go/x2gosql/sql* and *X2Go::Config module* coming from?
> Which x2go package provides it and why isn't it getting installed? I tried
> dpkg -i --force-confmiss on all packages to no avail. I mean on a brand new
> installed system, you would not have /etc/x2go/x2gosql/sql and the
> packages would have to provide it in any case to make the server function.
>
>
>
> On Wed, Mar 14, 2018 at 7:03 AM, Mihai Moldovan  wrote:
>
>> * On 03/14/2018 02:48 PM, Mihai Moldovan wrote:
>> > Please create /etc/x2go/x2gosql/sql manually with a line containing
>> > 'backend=sqlite'. That should allow you to purge the packages.
>> >
>> > Afterwards you should be able to reinstall them normally.
>>
>> Oh, and if this still doesn't help for purging, you'll have to modify the
>> scriptlets apt saved in /var/lib/dpkg/info/, like Jason already pointed
>> out.
>>
>> Edit x2goserver.postrm, libx2go-server-db-perl.postrm and
>> x2goserver-common.postrm (if they exist) and put a [ -d '/etc/x2go' ] &&
>> before
>> the rmdir calls, like in
>> https://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h
>> =561ee44138fa6bc02d1293539dac501a9dda1886
>>
>> Purging should seriously work after that.
>>
>>
>>
>> Mihai
>>
>>
>>
>
>
> --
> *Por sperto kaj lerno ne sufiĉas eterno.*
>



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Re: [X2Go-User] Can't install X2goserver on Debian 9

[Nigra Truo]

Or asked otherwise:
Where is */etc/x2go/x2gosql/sql* and *X2Go::Config module* coming from?
Which x2go package provides it and why isn't it getting installed? I tried
dpkg -i --force-confmiss on all packages to no avail. I mean on a brand new
installed system, you would not have /etc/x2go/x2gosql/sql and the packages
would have to provide it in any case to make the server function.



On Wed, Mar 14, 2018 at 7:03 AM, Mihai Moldovan  wrote:

> * On 03/14/2018 02:48 PM, Mihai Moldovan wrote:
> > Please create /etc/x2go/x2gosql/sql manually with a line containing
> > 'backend=sqlite'. That should allow you to purge the packages.
> >
> > Afterwards you should be able to reinstall them normally.
>
> Oh, and if this still doesn't help for purging, you'll have to modify the
> scriptlets apt saved in /var/lib/dpkg/info/, like Jason already pointed
> out.
>
> Edit x2goserver.postrm, libx2go-server-db-perl.postrm and
> x2goserver-common.postrm (if they exist) and put a [ -d '/etc/x2go' ] &&
> before
> the rmdir calls, like in
> https://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=
> 561ee44138fa6bc02d1293539dac501a9dda1886
>
> Purging should seriously work after that.
>
>
>
> Mihai
>
>
>


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Re: [X2Go-User] Can't install X2goserver on Debian 9

[Nigra Truo]

Now I get this error:
Setting up x2goserver (4.1.0.0-0x2go1.2+git20180302.1517+9.main.1) ...
Can't locate X2Go/Config.pm in @INC (you may need to install the
X2Go::Config module) (@INC contains: /etc/perl
/usr/local/lib/x86_64-linux-gnu/perl/5.24.1 /usr/local/share/perl/5.24.1
/usr/lib/x86_64-linux-gnu/perl5/5.24 /usr/share/perl5
/usr/lib/x86_64-linux-gnu/perl/5.24 /usr/share/perl/5.24
/usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at
/usr/sbin/x2godbadmin line 30.

At this point the salient question is: Why is this not working? There is
nothing x2go on this server, I erased everything that the purge failed to
do. At this point, the system should be as fresh as a completely new box.
But for some reason, dpkg seems to remember that I erased something or that
something is missing. Where is that stored, how can I make dpkg / apt treat
this as though it does not know anything about the x2goserver package, like
it was never installed before? This is not the first time this happened,
dpkg seems to remember when things get erased and does not get that likely,
an admin erased something for a purpose and that it should be replaced
fresh when reinstalling it, instead of complaining that a config is not
there (while in a fresh install, there is nothing installed and all the
files need to be unpacked and installed from scratch)

Thanks,

Markus

On Wed, Mar 14, 2018 at 6:48 AM, Mihai Moldovan  wrote:

> * On 03/14/2018 03:19 AM, Nigra Truo wrote:
> > Thanks for the pointers. Yes, of course all apt commands are always
> executed
> > as root. Right now it is not so much about the bug that prevents
> purging, it
> > is more that I just can't reinstall x2goserver anymore. I see this
> message
> >
> > "X2Go is configured to use a non-SQLite DB backend, leaving the database
> > alone" and the server install fails.
> >
> > and can't find any documentation and reference to it, it is a show
> stopper
> > at this moment. Question: Where is x2go told to do that? Which config is
> > still left on the system? I cleaned up EVERYTHING x2go related, erased
> all
> > dirs and configs, I have never seen this message before. It is like apt /
> > dpkg remembers some setting that it is not supposed to remember (as the
> > package was purged)
>
> It's determined in a {pre,post}{inst,rm} scripts... which are buggy in
> that regard.
>
> We should ignore non-existing files instead of assuming a different SQL
> backend
> being used.
>
> Please create /etc/x2go/x2gosql/sql manually with a line containing
> 'backend=sqlite'. That should allow you to purge the packages.
>
> Afterwards you should be able to reinstall them normally.
>
>
> Mihai
>
>
>


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Re: [X2Go-User] Can't install X2goserver on Debian 9

[Mihai Moldovan]

* On 03/14/2018 02:48 PM, Mihai Moldovan wrote:
> Please create /etc/x2go/x2gosql/sql manually with a line containing
> 'backend=sqlite'. That should allow you to purge the packages.
> 
> Afterwards you should be able to reinstall them normally.

Oh, and if this still doesn't help for purging, you'll have to modify the
scriptlets apt saved in /var/lib/dpkg/info/, like Jason already pointed out.

Edit x2goserver.postrm, libx2go-server-db-perl.postrm and
x2goserver-common.postrm (if they exist) and put a [ -d '/etc/x2go' ] && before
the rmdir calls, like in
https://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=561ee44138fa6bc02d1293539dac501a9dda1886

Purging should seriously work after that.



Mihai




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Re: [X2Go-User] Can't install X2goserver on Debian 9

[Mihai Moldovan]

* On 03/14/2018 03:19 AM, Nigra Truo wrote:
> Thanks for the pointers. Yes, of course all apt commands are always executed
> as root. Right now it is not so much about the bug that prevents purging, it
> is more that I just can't reinstall x2goserver anymore. I see this message
> 
> "X2Go is configured to use a non-SQLite DB backend, leaving the database
> alone" and the server install fails.
> 
> and can't find any documentation and reference to it, it is a show stopper
> at this moment. Question: Where is x2go told to do that? Which config is
> still left on the system? I cleaned up EVERYTHING x2go related, erased all
> dirs and configs, I have never seen this message before. It is like apt /
> dpkg remembers some setting that it is not supposed to remember (as the
> package was purged)

It's determined in a {pre,post}{inst,rm} scripts... which are buggy in that 
regard.

We should ignore non-existing files instead of assuming a different SQL backend
being used.

Please create /etc/x2go/x2gosql/sql manually with a line containing
'backend=sqlite'. That should allow you to purge the packages.

Afterwards you should be able to reinstall them normally.


Mihai




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Re: [X2Go-User] Can't install X2goserver on Debian 9

[Nigra Truo]

Thanks for the pointers. Yes, of course all apt commands are always
executed as root.
Right now it is not so much about the bug that prevents purging, it is more
that I just can't reinstall x2goserver anymore. I see this message

"X2Go is configured to use a non-SQLite DB backend, leaving the database
alone"
and the server install fails.

and can't find any documentation and reference to it, it is a show stopper
at this moment.
Question: Where is x2go told to do that? Which config is still left on the
system? I cleaned up EVERYTHING x2go related, erased all dirs and configs,
I have never seen this message before. It is like apt / dpkg remembers some
setting that it is not supposed to remember (as the package was purged)


On Tue, Mar 13, 2018 at 4:07 PM, Jason Heeris 
wrote:

> On 14 March 2018 at 09:30, Nigra Truo  wrote:
> > Purge complained that directories were not empty. Then, after I erased
> the directories, it complains that they are not there (apt is super
> annoying at times where you can't get it right, no matter how you try). Now
> I'm stuck, can't install or deinstall:
>
> Purely for future reference, apt/dpkg expects to be the one managing this
> directory. If there's extra stuff in it, it'll fail to give you the chance
> to sort it out or back it up (I think?). If the directory's gone though,
> it'll be confused, because it's meant to be there if the package is
> installed, and apt/dpkg is meant to be managing it.
>
> I'm not sure why recreating the directory doesn't help though. Are you
> doing it as root?
>
> You could also try:
>
> $ sudo dpkg --purge --force-all x2goserver
>
> If that doesn't work, you might need to manually hack on the the removal
> scripts in /var/lib/dpkg/info/ (the relevant ones start with the package
> names eg. /var/lib/dpkg/info/x2goserver.postrm) to skip the directory
> check and run the purge again, or get an x2go dev to send you a modified
> one.
>
> I'm not an x2go dev, so I can only really give advice on the apt side of
> things. Hope it helps. They may have other advice.
>
> - Jason
>
>


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Re: [X2Go-User] Can't install X2goserver on Debian 9

[Jason Heeris]

On 14 March 2018 at 09:30, Nigra Truo  wrote:
> Purge complained that directories were not empty. Then, after I erased
the directories, it complains that they are not there (apt is super
annoying at times where you can't get it right, no matter how you try). Now
I'm stuck, can't install or deinstall:

Purely for future reference, apt/dpkg expects to be the one managing this
directory. If there's extra stuff in it, it'll fail to give you the chance
to sort it out or back it up (I think?). If the directory's gone though,
it'll be confused, because it's meant to be there if the package is
installed, and apt/dpkg is meant to be managing it.

I'm not sure why recreating the directory doesn't help though. Are you
doing it as root?

You could also try:

$ sudo dpkg --purge --force-all x2goserver

If that doesn't work, you might need to manually hack on the the removal
scripts in /var/lib/dpkg/info/ (the relevant ones start with the package
names eg. /var/lib/dpkg/info/x2goserver.postrm) to skip the directory check
and run the purge again, or get an x2go dev to send you a modified one.

I'm not an x2go dev, so I can only really give advice on the apt side of
things. Hope it helps. They may have other advice.

- Jason
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