Puppet users - Jun 2013 - Delete ypbind.........dependancy headaches.. yp-tools is needed by (installed) ypbind

Hi,

My brain is hurting a bit over this one. How does one delete ypbind cleanly
from a RHEL6 box? It has a dep of yp-tools. No problem...I add both to the
uninstall list in hiera;

packages_oel6_absent:
<snip>
                       - ypbind
                       - yp-tools

SNIP from manifest;
  $packagesabsent =
hiera("${packages_key}_absent",''nil'')

  if $packagesabsent != ''nil'' {
    package { $packagesabsent:
      ensure => absent,
    }

Works a treat for all other packages removing cleanly, apart from these two.

Here''s the error when I add both programs to the delete list;

err: /Stage[main]/Axx_packages/Package[yp-tools]/ensure: change from
2.9-12.el6 to absent failed: Execution of ''/bin/rpm -e
yp-tools-2.9-12.el6.x86_64'' returned 1: error: Failed dependencies:
    yp-tools is needed by (installed) ypbind-3:1.20.4-29.el6.x86_64

err: /Stage[main]/Axx_packages/Package[ypbind]/ensure: change from
1.20.4-29.el6 to absent failed: Execution of ''/bin/rpm -e
ypbind-1.20.4-29.el6.x86_64'' returned 1: error: Failed dependencies:
    ypbind is needed by (installed) yp-tools-2.9-12.el6.x86_64

If I only state one of the packages for removal....I only get one of the
errors.

I read some historical threads from a few years back reporting the same
issue, but hoping it''s fixed by now.

Other than doing a bit of a nasty exec rpm -e / onlyif rpm -q ypbind
blah....what''s a chap to do?

Regs,

Stephen

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On Tuesday, June 4, 2013 7:18:26 AM UTC-5, Stephen Wallace
wrote:
>
> Hi,
>
> My brain is hurting a bit over this one. How does one delete ypbind 
> cleanly from a RHEL6 box? It has a dep of yp-tools. No problem...I add both
> to the uninstall list in hiera;
>
> packages_oel6_absent:  
> <snip>
>                        - ypbind
>                        - yp-tools
>
> SNIP from manifest;
>   $packagesabsent =
hiera("${packages_key}_absent",''nil'')
>
>   if $packagesabsent != ''nil'' {
>     package { $packagesabsent:
>       ensure => absent,
>     }
>
> Works a treat for all other packages removing cleanly, apart from these 
> two.
>
> Here''s the error when I add both programs to the delete list;
>
> err: /Stage[main]/Axx_packages/Package[yp-tools]/ensure: change from 
> 2.9-12.el6 to absent failed: Execution of ''/bin/rpm -e 
> yp-tools-2.9-12.el6.x86_64'' returned 1: error: Failed
dependencies:
>     yp-tools is needed by (installed) ypbind-3:1.20.4-29.el6.x86_64
>
> err: /Stage[main]/Axx_packages/Package[ypbind]/ensure: change from 
> 1.20.4-29.el6 to absent failed: Execution of ''/bin/rpm -e 
> ypbind-1.20.4-29.el6.x86_64'' returned 1: error: Failed
dependencies:
>     ypbind is needed by (installed) yp-tools-2.9-12.el6.x86_64
>
> If I only state one of the packages for removal....I only get one of the 
> errors.
>
> I read some historical threads from a few years back reporting the same 
> issue, but hoping it''s fixed by now.
>
> Other than doing a bit of a nasty exec rpm -e / onlyif rpm -q ypbind 
> blah....what''s a chap to do?
>
>
Supposing that the ''yum'' Package provider is being selected
(as should be
the case for RHEL 6), a chap should use ensure => ''purged''
instead of
ensure => ''absent'' for the affected packages.

The basic problem there is the circular dependency between the two 
packages.  I''d account that a packaging error, for if two packages each
depend on the other, then they cannot really be considered separate.

On the Puppet side, Puppet strives to avoid doing modifying system state in 
any way you did not actually tell it to do.  In order to achieve that for 
Package resources, its ''yum'' package provider normally uses
"rpm -e" to
remove packages (as opposed to "yum remove").  Furthermore, in order
for
resource relationships to work correctly, Puppet needs to manage each 
package individually; it cannot combine multiple package removals into a 
single command.  If what you want is for the package to be removed, no 
matter what it takes, then ''purged'' is how you express that to
Puppet.


John

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----- Original Message -----

| Hi,

| My brain is hurting a bit over this one. How does one delete ypbind
| cleanly from a RHEL6 box? It has a dep of yp-tools. No problem...I
| add both to the uninstall list in hiera;

| packages_oel6_absent:
| <snip>

| - ypbind
| - yp-tools

| SNIP from manifest;
| $packagesabsent =
hiera("${packages_key}_absent",''nil'')

| if $packagesabsent != ''nil'' {
| package { $packagesabsent:
| ensure => absent,
| }

| Works a treat for all other packages removing cleanly, apart from
| these two.

| Here''s the error when I add both programs to the delete list;

| err: /Stage[main]/Axx_packages/Package[yp-tools]/ensure: change from
| 2.9-12.el6 to absent failed: Execution of ''/bin/rpm -e
| yp-tools-2.9-12.el6.x86_64'' returned 1: error: Failed dependencies:
| yp-tools is needed by (installed) ypbind-3:1.20.4-29.el6.x86_64

| err: /Stage[main]/Axx_packages/Package[ypbind]/ensure: change from
| 1.20.4-29.el6 to absent failed: Execution of ''/bin/rpm -e
| ypbind-1.20.4-29.el6.x86_64'' returned 1: error: Failed dependencies:
| ypbind is needed by (installed) yp-tools-2.9-12.el6.x86_64

| If I only state one of the packages for removal....I only get one of
| the errors.

| I read some historical threads from a few years back reporting the
| same issue, but hoping it''s fixed by now.

| Other than doing a bit of a nasty exec rpm -e / onlyif rpm -q ypbind
| blah....what''s a chap to do?

| Regs,

| Stephen

Try with ensure => purge 

-- 

James A. Peltier 
Manager, IT Services - Research Computing Group 
Simon Fraser University - Burnaby Campus 
Phone : 778-782-6573 
Fax : 778-782-3045 
E-Mail : jpeltier@sfu.ca 
Website : http://www.sfu.ca/itservices 

“A successful person is one who can lay a solid foundation from the bricks
others have thrown at them.” -David Brinkley via Luke Shaw

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