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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