I've taken over a CentOS machine. The previous SA had a habit of using
the --nodeps flag to rpm to remove packages (he was trying to build a
small server and removed packages he felt weren't needed). I have a
horrible feeling that this has resulted in some required dependencies
no longer being met. The server kinda-works, but it may break in
unexpected ways; I don't like being surprised!

Is there an easy way to determine what rpms might be missing? I'd hoped
to use something like "rpm -qR" against each of the installed packages,
but that output isn't simply converted to rpm package names.

Any guidance appreciated!

Thanks,

--

rgds
Stephen
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Stephen Harris wrote:
> I've taken over a CentOS machine. The previous SA had a habit of using
> the --nodeps flag to rpm to remove packages (he was trying to build a
> small server and removed packages he felt weren't needed). I have a
> horrible feeling that this has resulted in some required dependencies
> no longer being met. The server kinda-works, but it may break in
> unexpected ways; I don't like being surprised!
>
> Is there an easy way to determine what rpms might be missing? I'd hoped
> to use something like "rpm -qR" against each of the installed packages,
> but that output isn't simply converted to rpm package names.
>
> Any guidance appreciated!
>
> Thanks,
>
Try something like this:

yum reinstall $(yum list installed | awk '{print $1}')

It should force reinstall and ask for dependencies in the process, but I
do not have any broken system to try if it works.

Ljubomir
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On Mon, Apr 11, 2011 at 12:33:56AM +0200, Ljubomir Ljubojevic wrote:
> > Is there an easy way to determine what rpms might be missing? I'd hoped
> > to use something like "rpm -qR" against each of the installed packages,
> > but that output isn't simply converted to rpm package names.

> Try something like this:
>
> yum reinstall $(yum list installed | awk '{print $1}')

Hmm, interesting idea. Not too efficient, and could possibly break
config files if the rpm isn't well formed. But, hmm... interesting.

This led me to "yum deplist"... which sounds like it might also be
usable. Not quite clean-cut but a definite possibility!

Thanks.

--

rgds
Stephen
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On Sunday 10 April 2011 17:51, Stephen Harris wrote:

> I've taken over a CentOS machine. The previous SA had a habit of
> using the --nodeps flag to rpm to remove packages (he was trying to
> build a small server and removed packages he felt weren't needed). I
> have a horrible feeling that this has resulted in some required
> dependencies no longer being met. The server kinda-works, but it may
> break in unexpected ways; I don't like being surprised!
>
> Is there an easy way to determine what rpms might be missing? I'd
> hoped to use something like "rpm -qR" against each of the installed
> packages, but that output isn't simply converted to rpm package
> names.

Does "package-cleanup --problems" do what you want? It's in the
yum-utils package.

--problems: List dependency problems in the local RPM database.

--
Yves Bellefeuille <yan@storm.ca>
"La Esperanta Civito ne rifuzas anticipe la kunlaboron de erarintoj, se
ili konscias pri sia eraro." -- Heroldo Komunikas, n-ro 473.
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On Sun, 2011-04-10 at 21:00 -0400, Stephen Harris wrote:
> On Mon, Apr 11, 2011 at 12:33:56AM +0200, Ljubomir Ljubojevic wrote:
> > > Is there an easy way to determine what rpms might be missing? I'd hoped
> > > to use something like "rpm -qR" against each of the installed packages,
> > > but that output isn't simply converted to rpm package names.
>
> > Try something like this:
> >
> > yum reinstall $(yum list installed | awk '{print $1}')
>
> Hmm, interesting idea. Not too efficient, and could possibly break
> config files if the rpm isn't well formed. But, hmm... interesting.
>
> This led me to "yum deplist"... which sounds like it might also be
> usable. Not quite clean-cut but a definite possibility!
>

Install yum-utils and then try:

# package-cleanup --problems


>From the package-cleanup manpage:

--problems

List dependency problems in the local RPM database.

Steve


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On Sun, Apr 10, 2011 at 09:46:48PM -0400, Yves Bellefeuille wrote:
> Does "package-cleanup --problems" do what you want? It's in the

Looks good!

% package-cleanup --problems
Setting up yum
Reading local RPM database
Processing all local requires
Missing dependencies:
Package perl-IO-Zlib requires perl(Compress::Zlib)
Package perl-libwww-perl requires perl(Compress::Zlib)
Package perl-Archive-Tar requires perl(Compress::Zlib)

Thanks!

--

rgds
Stephen
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S.Tindall wrote:
> On Sun, 2011-04-10 at 21:00 -0400, Stephen Harris wrote:
>> On Mon, Apr 11, 2011 at 12:33:56AM +0200, Ljubomir Ljubojevic wrote:
>>>> Is there an easy way to determine what rpms might be missing? I'd hoped
>>>> to use something like "rpm -qR" against each of the installed packages,
>>>> but that output isn't simply converted to rpm package names.
>>> Try something like this:
>>>
>>> yum reinstall $(yum list installed | awk '{print $1}')
>> Hmm, interesting idea. Not too efficient, and could possibly break
>> config files if the rpm isn't well formed. But, hmm... interesting.
>>
>> This led me to "yum deplist"... which sounds like it might also be
>> usable. Not quite clean-cut but a definite possibility!
>>
>
> Install yum-utils and then try:
>
> # package-cleanup --problems
>
>
>>From the package-cleanup manpage:
>
> --problems
>
> List dependency problems in the local RPM database.
>
> Steve
>

I will have to remember this. I never ever had any problems with
yum/packages so I forgot all about yum-utils.

Thanks,
Ljubomir
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Try a yum update and look at the output. Now, with a new release this is a
good option, anyway.

Kai


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