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James A. Peltier

2011-Oct-12 20:15 UTC

[Puppet Users] Setting savedefult options with augeas/puppet

Hi All,

I''m trying to create a puppet manifest that sets the grub default=
value to saved and the Windows option to savedefault for a dual_boot class. 
Setting the default= option is actually fairly easy, but I''m not sure
how to create the savedefault entry for the Windows side.  Anyone have to deal
with this and have a suggestion?

-- 
James A. Peltier
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
          http://blogs.sfu.ca/people/jpeltier
I will do the best I can with the talent I have

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Luke Bigum

2011-Oct-13 08:24 UTC

head link

[Puppet Users] Re: Setting savedefult options with augeas/puppet

Can you give me an example of a grub.conf file that you want to
achieve? I don''t have a dual boot windows system so not exactly sure
what option you mean.

On Oct 12, 9:15 pm, "James A. Peltier" <jpelt...@sfu.ca>
wrote:> Hi All,
>
> I''m trying to create a puppet manifest that sets the grub default=
value to saved and the Windows option to savedefault for a dual_boot class.
 Setting the default= option is actually fairly easy, but I''m not sure
how to create the savedefault entry for the Windows side.  Anyone have to deal
with this and have a suggestion?
>
> --
> James A. Peltier
> IT Services - Research Computing Group
> Simon Fraser University - Burnaby Campus
> Phone   : 778-782-6573
> Fax     : 778-782-3045
> E-Mail  : jpelt...@sfu.ca
> Website :http://www.sfu.ca/itservices
>          http://blogs.sfu.ca/people/jpeltier
> I will do the best I can with the talent I have
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James Peltier

2011-Oct-13 22:16 UTC

head link

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet

On Thu, Oct 13, 2011 at 1:24 AM, Luke Bigum <Luke.Bigum@lmax.com> wrote:
> Can you give me an example of a grub.conf file that you want to
> achieve? I don''t have a dual boot windows system so not exactly
sure
> what option you mean.


> # grub.conf generated by anaconda
> #
> # Note that you do not have to rerun grub after making changes to this file
> # NOTICE:  You have a /boot partition.  This means that
> #          all kernel and initrd paths are relative to /boot/, eg.
> #          root (hd0,2)
> #          kernel /vmlinuz-version ro root=/dev/ROOTDISK/root
> #          initrd /initrd-version.img
> #boot=/dev/sda
> default=0
> timeout=15
> splashimage=(hd0,2)/grub/splash.xpm.gz
> hiddenmenu
> password --md5 $1$CgIXv$laSfgcbmFW62.Y7PWbtBB0
> title CentOS (2.6.18-274.3.1.el5)
>         root (hd0,2)
>         kernel /vmlinuz-2.6.18-274.3.1.el5 ro root=/dev/ROOTDISK/root rhgb
> quiet
>         initrd /initrd-2.6.18-274.3.1.el5.img
> title Windows
>         rootnoverify (hd0,0)
>         chainloader +1
>
>
default= should be set to saved
davedefault should be appended after chainloader +1

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James A. Peltier

2011-Oct-13 22:17 UTC

head link

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet

----- Original Message -----
| On Thu, Oct 13, 2011 at 1:24 AM, Luke Bigum <Luke.Bigum@lmax.com>
| wrote:
| 
| > Can you give me an example of a grub.conf file that you want to
| > achieve? I don''t have a dual boot windows system so not exactly
sure
| > what option you mean.
| 
| 
| 
| 
| > # grub.conf generated by anaconda
| > #
| > # Note that you do not have to rerun grub after making changes to
| > this file
| > # NOTICE: You have a /boot partition. This means that
| > # all kernel and initrd paths are relative to /boot/, eg.
| > # root (hd0,2)
| > # kernel /vmlinuz-version ro root=/dev/ROOTDISK/root
| > # initrd /initrd-version.img
| > #boot=/dev/sda
| > default=0
| > timeout=15
| > splashimage=(hd0,2)/grub/splash.xpm.gz
| > hiddenmenu
| > password --md5 $1$CgIXv$laSfgcbmFW62.Y7PWbtBB0
| > title CentOS (2.6.18-274.3.1.el5)
| >         root (hd0,2)
| >         kernel /vmlinuz-2.6.18-274.3.1.el5 ro
| >         root=/dev/ROOTDISK/root rhgb
| > quiet
| >         initrd /initrd-2.6.18-274.3.1.el5.img
| > title Windows
| >         rootnoverify (hd0,0)
| >         chainloader +1
| >
| >
| 
| default= should be set to saved
| davedefault should be appended after chainloader +1

savedefault should be appended after chainloader +1

-- 
James A. Peltier
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
          http://blogs.sfu.ca/people/jpeltier
I will do the best I can with the talent I have

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Luke Bigum

2011-Oct-14 09:11 UTC

head link

[Puppet Users] Re: Setting savedefult options with augeas/puppet

Cheers, I''ll walk you through how I came up with the augeas commands.

Opening augtool and printing /files/boot/grup/menu.lst shows how the
lense has constructed the augeas tree (edited for brevity):

augtool> print /files/boot/grub/menu.lst/
/files/boot/grub/menu.lst
/files/boot/grub/menu.lst/#comment[1] = "grub.conf generated by
anaconda"
...
/files/boot/grub/menu.lst/default = "0"
/files/boot/grub/menu.lst/timeout = "0"
/files/boot/grub/menu.lst/splashimage = "(hd0,0)/grub/splash.xpm.gz"
...
/files/boot/grub/menu.lst/title[2] = "Fedora (2.6.40.4-5.fc15.x86_64)"
/files/boot/grub/menu.lst/title[2]/root = "(hd0,0)"
/files/boot/grub/menu.lst/title[2]/kernel = "/
vmlinuz-2.6.40.4-5.fc15.x86_64"
/files/boot/grub/menu.lst/title[2]/kernel/ro
...
/files/boot/grub/menu.lst/title[4] = "Windows"
/files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
/files/boot/grub/menu.lst/title[4]/chainloader = "+1"

Looks like each boot option is created as in array format in the title
branch of the tree, with a value of the actual title of the boot
option. That makes finding just the Windows one very easy, however it
depends on you knowing the title of the kernel option, which I''m going
to assume you do.

augtool> print /files/boot/grub/menu.lst/title[.="Windows"]
/files/boot/grub/menu.lst/title[4] = "Windows"
/files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
/files/boot/grub/menu.lst/title[4]/chainloader = "+1"

The period in the path expression /files/boot/grub/menu.lst/
title[.="Windows"] is a shortcut for self::*, which is tree node
''title'' in this case, so in laymans terms "print title
where title Windows".

As a learning exercise lets assume we don''t know the title of the
Windows Grub option, but we assume that anything that has
"chainloader+1" we need to do something with, we can use this path
expression,
which says "child tree nodes of the name ''chainloader''
with the value
''+1''".

augtool> print /files/boot/grub/menu.lst/
title[child::chainloader="+1"]
/files/boot/grub/menu.lst/title[4] = "Windows"
/files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
/files/boot/grub/menu.lst/title[4]/chainloader = "+1"

It can be simplified by dropping the "child::" bit, which is an augeas
shortcut:

augtool> print /files/boot/grub/menu.lst/title[chainloader="+1"]
/files/boot/grub/menu.lst/title[4] = "Windows"
/files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
/files/boot/grub/menu.lst/title[4]/chainloader = "+1"

Back to your example, adding the savedefault node:

augtool> ins savedefault after /files/boot/grub/menu.lst/
title[.="Windows"]/chainloader
augtool> print /files/boot/grub/menu.lst/title[.="Windows"]
/files/boot/grub/menu.lst/title[4] = "Windows"
/files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
/files/boot/grub/menu.lst/title[4]/chainloader = "+1"
/files/boot/grub/menu.lst/title[4]/savedefault
augtool> save
Saved 1 file(s)
augootl> quit
[root@biguml-laptop ~]# tail -n 4 /boot/grub/grub.conf
title Windows
        rootnoverify (hd0,0)
        chainloader +1
	savedefault

Looks good.

You piqued my interest with the savedefault option though so I looked
it up. Are you sure you don''t want it on every kernel boot option so
if you change into different Linux kernels it remembers them as well?

You can do that with augeas too, using a combination of setm and
clearm (set multiple and clear multiple).

First use setm to create the ''savedefault'' node as a child of
all
''title'' nodes and then clear the value of these node, as the
''savedefault'' option doesn''t have a value:

augtool> setm /files/boot/grub/menu.lst/title savedefault 1
augtool> clearm /files/boot/grub/menu.lst/title savedefault
augtool> save
Saved 1 file(s)

[root@biguml-laptop ~]# cat /boot/grub/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this
file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/mapper/vg_root-lv_root
#          initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=0
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.40.6-0.fc15.x86_64)
	root (hd0,0)
	kernel /vmlinuz-2.6.40.6-0.fc15.x86_64 ro root=/dev/mapper/vg_root-
lv_root rd_LUKS_UUID=luks-08041027-ab79-4f45-87b0-756d1eeb26e5
rd_LVM_LV=vg_root/lv_root rd_NO_MD rd_NO_DM LANG=en_GB.UTF-8
SYSFONT=latarcyrheb-sun16 KEYTABLE=uk rhgb quiet
	initrd /initramfs-2.6.40.6-0.fc15.x86_64.img
	savedefault
title Windows
        rootnoverify (hd0,0)
        chainloader +1
	savedefault


There we go.

You might run into a problem using setm in Puppet, probably clearm as
well, as I don''t think ruby-augeas supports it properly (I
can''t
remember the error). In my manifests I call augtool in an Exec
resource. In Fedora at least, augtool -s "<command>"
wasn''t saving the
files either so I had to get even more hacky and use a temporary file
(urgh...). This is from  one of my modules:

  $aug_tmp_file = "/tmp/.puppet_base_augeas_cmd_file"
  exec { "set elevator=deadline in $grub_menu":
    command => "echo ''setm /files${grub_menu}/title
kernel/elevator
deadline'' > ${aug_tmp_file} &&  /usr/bin/augtool -s -f
${aug_tmp_file}
&& rm -f ${aug_tmp_file}",
    onlyif  => "grep ''kernel /vmlinuz-2'' ${grub_menu}
| grep -v
elevator=deadline",
    require => Package["augeas"],
  }

Hope that helps,

-Luke

On Oct 13, 11:17 pm, "James A. Peltier" <jpelt...@sfu.ca>
wrote:> ----- Original Message -----
> | On Thu, Oct 13, 2011 at 1:24 AM, Luke Bigum <Luke.Bi...@lmax.com>
> | wrote:
> |
> | > Can you give me an example of a grub.conf file that you want to
> | > achieve? I don''t have a dual boot windows system so not
exactly sure
> | > what option you mean.
> |
> |
> |
> |
> | > # grub.conf generated by anaconda
> | > #
> | > # Note that you do not have to rerun grub after making changes to
> | > this file
> | > # NOTICE: You have a /boot partition. This means that
> | > # all kernel and initrd paths are relative to /boot/, eg.
> | > # root (hd0,2)
> | > # kernel /vmlinuz-version ro root=/dev/ROOTDISK/root
> | > # initrd /initrd-version.img
> | > #boot=/dev/sda
> | > default=0
> | > timeout=15
> | > splashimage=(hd0,2)/grub/splash.xpm.gz
> | > hiddenmenu
> | > password --md5 $1$CgIXv$laSfgcbmFW62.Y7PWbtBB0
> | > title CentOS (2.6.18-274.3.1.el5)
> | >         root (hd0,2)
> | >         kernel /vmlinuz-2.6.18-274.3.1.el5 ro
> | >         root=/dev/ROOTDISK/root rhgb
> | > quiet
> | >         initrd /initrd-2.6.18-274.3.1.el5.img
> | > title Windows
> | >         rootnoverify (hd0,0)
> | >         chainloader +1
> | >
> | >
> |
> | default= should be set to saved
> | davedefault should be appended after chainloader +1
>
> savedefault should be appended after chainloader +1
>
> --
> James A. Peltier
> IT Services - Research Computing Group
> Simon Fraser University - Burnaby Campus
> Phone   : 778-782-6573
> Fax     : 778-782-3045
> E-Mail  : jpelt...@sfu.ca
> Website :http://www.sfu.ca/itservices
>          http://blogs.sfu.ca/people/jpeltier
> I will do the best I can with the talent I have
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James A. Peltier

2011-Oct-16 23:58 UTC

head link

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet

----- Original Message -----
| Cheers, I''ll walk you through how I came up with the augeas commands.
| 
| Opening augtool and printing /files/boot/grup/menu.lst shows how the
| lense has constructed the augeas tree (edited for brevity):
| 
| augtool> print /files/boot/grub/menu.lst/
| /files/boot/grub/menu.lst
| /files/boot/grub/menu.lst/#comment[1] = "grub.conf generated by
| anaconda"
| ...
| /files/boot/grub/menu.lst/default = "0"
| /files/boot/grub/menu.lst/timeout = "0"
| /files/boot/grub/menu.lst/splashimage = "(hd0,0)/grub/splash.xpm.gz"
| ...
| /files/boot/grub/menu.lst/title[2] = "Fedora
(2.6.40.4-5.fc15.x86_64)"
| /files/boot/grub/menu.lst/title[2]/root = "(hd0,0)"
| /files/boot/grub/menu.lst/title[2]/kernel = "/
| vmlinuz-2.6.40.4-5.fc15.x86_64"
| /files/boot/grub/menu.lst/title[2]/kernel/ro
| ...
| /files/boot/grub/menu.lst/title[4] = "Windows"
| /files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
| /files/boot/grub/menu.lst/title[4]/chainloader = "+1"
| 
| Looks like each boot option is created as in array format in the title
| branch of the tree, with a value of the actual title of the boot
| option. That makes finding just the Windows one very easy, however it
| depends on you knowing the title of the kernel option, which I''m
going
| to assume you do.
| 
| augtool> print /files/boot/grub/menu.lst/title[.="Windows"]
| /files/boot/grub/menu.lst/title[4] = "Windows"
| /files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
| /files/boot/grub/menu.lst/title[4]/chainloader = "+1"
| 
| The period in the path expression /files/boot/grub/menu.lst/
| title[.="Windows"] is a shortcut for self::*, which is tree node
| ''title'' in this case, so in laymans terms "print title
where title | Windows".
| 
| As a learning exercise lets assume we don''t know the title of the
| Windows Grub option, but we assume that anything that has
| "chainloader| +1" we need to do something with, we can use this path
expression,
| which says "child tree nodes of the name ''chainloader''
with the value
| ''+1''".
| 
| augtool> print /files/boot/grub/menu.lst/
| title[child::chainloader="+1"]
| /files/boot/grub/menu.lst/title[4] = "Windows"
| /files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
| /files/boot/grub/menu.lst/title[4]/chainloader = "+1"
| 
| It can be simplified by dropping the "child::" bit, which is an
augeas
| shortcut:
| 
| augtool> print /files/boot/grub/menu.lst/title[chainloader="+1"]
| /files/boot/grub/menu.lst/title[4] = "Windows"
| /files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
| /files/boot/grub/menu.lst/title[4]/chainloader = "+1"
| 
| Back to your example, adding the savedefault node:
| 
| augtool> ins savedefault after /files/boot/grub/menu.lst/
| title[.="Windows"]/chainloader
| augtool> print /files/boot/grub/menu.lst/title[.="Windows"]
| /files/boot/grub/menu.lst/title[4] = "Windows"
| /files/boot/grub/menu.lst/title[4]/rootnoverify = "(hd0,0)"
| /files/boot/grub/menu.lst/title[4]/chainloader = "+1"
| /files/boot/grub/menu.lst/title[4]/savedefault
| augtool> save
| Saved 1 file(s)
| augootl> quit
| [root@biguml-laptop ~]# tail -n 4 /boot/grub/grub.conf
| title Windows
| rootnoverify (hd0,0)
| chainloader +1
| savedefault
| 
| Looks good.
| 
| You piqued my interest with the savedefault option though so I looked
| it up. Are you sure you don''t want it on every kernel boot option so
| if you change into different Linux kernels it remembers them as well?
| 
| You can do that with augeas too, using a combination of setm and
| clearm (set multiple and clear multiple).
| 
| First use setm to create the ''savedefault'' node as a child
of all
| ''title'' nodes and then clear the value of these node, as the
| ''savedefault'' option doesn''t have a value:
| 
| augtool> setm /files/boot/grub/menu.lst/title savedefault 1
| augtool> clearm /files/boot/grub/menu.lst/title savedefault
| augtool> save
| Saved 1 file(s)
| 
| [root@biguml-laptop ~]# cat /boot/grub/grub.conf
| # grub.conf generated by anaconda
| #
| # Note that you do not have to rerun grub after making changes to this
| file
| # NOTICE: You have a /boot partition. This means that
| # all kernel and initrd paths are relative to /boot/, eg.
| # root (hd0,0)
| # kernel /vmlinuz-version ro root=/dev/mapper/vg_root-lv_root
| # initrd /initrd-[generic-]version.img
| #boot=/dev/sda
| default=0
| timeout=0
| splashimage=(hd0,0)/grub/splash.xpm.gz
| hiddenmenu
| title Fedora (2.6.40.6-0.fc15.x86_64)
| root (hd0,0)
| kernel /vmlinuz-2.6.40.6-0.fc15.x86_64 ro root=/dev/mapper/vg_root-
| lv_root rd_LUKS_UUID=luks-08041027-ab79-4f45-87b0-756d1eeb26e5
| rd_LVM_LV=vg_root/lv_root rd_NO_MD rd_NO_DM LANG=en_GB.UTF-8
| SYSFONT=latarcyrheb-sun16 KEYTABLE=uk rhgb quiet
| initrd /initramfs-2.6.40.6-0.fc15.x86_64.img
| savedefault
| title Windows
| rootnoverify (hd0,0)
| chainloader +1
| savedefault
| 
| 
| There we go.
| 
| You might run into a problem using setm in Puppet, probably clearm as
| well, as I don''t think ruby-augeas supports it properly (I
can''t
| remember the error). In my manifests I call augtool in an Exec
| resource. In Fedora at least, augtool -s "<command>"
wasn''t saving the
| files either so I had to get even more hacky and use a temporary file
| (urgh...). This is from one of my modules:
| 
| $aug_tmp_file = "/tmp/.puppet_base_augeas_cmd_file"
| exec { "set elevator=deadline in $grub_menu":
| command => "echo ''setm /files${grub_menu}/title
kernel/elevator
| deadline'' > ${aug_tmp_file} && /usr/bin/augtool -s -f
${aug_tmp_file}
| && rm -f ${aug_tmp_file}",
| onlyif => "grep ''kernel /vmlinuz-2'' ${grub_menu} |
grep -v
| elevator=deadline",
| require => Package["augeas"],
| }
| 
| Hope that helps,
| 
| -Luke
| 

Thanks for the detailed reply Luke.  I''ve come up with the following
class and it works, however, keeps adding savedefault to the end so I''m
going to have to add an onlyif statement to stop that from happening. 
I''m still trying to work out that onlyif statement right now, but this
was incredibly helpful.

class windows_default_boot {
  augeas{ "set_windows_to_default" :
    context => "/files/etc/grub.conf",
    changes => [
    "ins savedefault after
/files/etc/grub.conf/title[.=''Windows'']/chainloader",
    ],
  }
}



-- 
James A. Peltier
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
          http://blogs.sfu.ca/people/jpeltier
I will do the best I can with the talent I have

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James A. Peltier

2011-Oct-17 00:01 UTC

head link

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet

----- Original Message -----
| | You piqued my interest with the savedefault option though so I
| | looked
| | it up. Are you sure you don''t want it on every kernel boot option
so
| | if you change into different Linux kernels it remembers them as
| | well?

BTW: No, this is not what this is intended to do.  This is intended to allow us
to define which machines should boot Windows by default only.  Setting the
savedefault parameter on all would not perform the steps we want.

-- 
James A. Peltier
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
          http://blogs.sfu.ca/people/jpeltier
I will do the best I can with the talent I have

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James A. Peltier

2011-Oct-17 00:59 UTC

head link

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet (SOLVED)

The following class seems to do exactly what I needed it to do.  It sets the
default context to saved and creates a savedefault parameter for the Windows
entry that exists.  This method also does not require a onlyif if statement
which is much better than the ins after option that was proposed by Luke
although his detailed explaination is still very much welcomed.  I just did it a
different way. ;)


class windows_default_boot {
  augeas{ "set_windows_to_default" :
    context => "/files/etc/grub.conf",
    changes => [
    "set /files/etc/grub.conf/default saved",
    "set
/files/etc/grub.conf/title[.=''Windows'']/savedefault 0",
    "clear
/files/etc/grub.conf/title[.=''Windows'']/savedefault",   
],
  }
}


Thanks again!

-- 
James A. Peltier
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
          http://blogs.sfu.ca/people/jpeltier
I will do the best I can with the talent I have

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Puppet users - Oct 2011 - Setting savedefult options with augeas/puppet

[Puppet Users] Setting savedefult options with augeas/puppet

[Puppet Users] Re: Setting savedefult options with augeas/puppet

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet

[Puppet Users] Re: Setting savedefult options with augeas/puppet

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet

Re: [Puppet Users] Re: Setting savedefult options with augeas/puppet (SOLVED)