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John Warburton

2009-Jul-01 04:21 UTC

[Puppet Users] Facter infinite looping on custom facts

Hi All

Background:
I am running Puppet to configure ESX 3.5 servers by NFS mounting the Puppet
binaries and configuration from a shared server. This is to ensure VMware
don''t come back refusing support for installing non standard software
on the
server.

# ruby -v
ruby 1.8.7 (2009-04-08 patchlevel 160) [i686-linux]
# facter -v
1.5.5

RUBYLIB=/apps/puppet/puppet/lib:/apps/puppet/facter/lib:/data/puppet/lib

I have 2 custom Ruby fact files in /data/puppet/lib/facter which follow
http://reductivelabs.com/trac/puppet/wiki/AddingFacts

dc_loc.rb (http://pastie.org/530294) - reads a file generated during a
kickstart with the Kickstart environment in name=value pairs and makes them
facts. Generates the important "location" fact.

facts.rb (http://pastie.org/530296) - Uses the "location" fact to load
up
location specific file with site specific configuration. It uses the rescue
call as describe in "Adding Facts":
begin
    Facter.location
rescue
    Facter.loadfacts()  # Line 22
end

Most of the time, facter works
# facter
architecture => i386
.
esx_version => 3.5.0u3
facterversion => 1.5.5
.
.
location => HERE
.
.

However, sometimes, some servers (I can''t see a pattern yet) will have
facter go into an infinite loop until there is no more memory. The only way
I have been able to reproduce it, is with renaming the files. NB The files
originally were named with the "AAA" prefix (actual TLA hidden to
protect
the innocent)

AAA_dc_loc.rb
AAA_facts.rb

# facter
/apps/puppet/facter/lib/facter/util/ip.rb:60:in ``'': Cannot allocate
memory
- /sbin/ifconfig -a (Errno::ENOMEM)
        from /apps/puppet/facter/lib/facter/util/ip.rb:60:in
`get_all_interface_output''
        from /apps/puppet/facter/lib/facter/util/ip.rb:48:in
`get_interfaces''
        from /apps/puppet/facter/lib/facter/interfaces.rb:20
        from /apps/puppet/facter/lib/facter/util/loader.rb:72:in `load''
        from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load_file''
        from /apps/puppet/facter/lib/facter/util/loader.rb:38:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/loader.rb:33:in `each''
        from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/loader.rb:30:in `each''
        from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
`load_all''
        from /apps/puppet/facter/lib/facter.rb:183:in `loadfacts''
        from /data/puppet/lib/facter/AAA_facts.rb:22
        from /apps/puppet/facter/lib/facter/util/loader.rb:72:in `load''
        from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load_file''
        from /apps/puppet/facter/lib/facter/util/loader.rb:38:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/loader.rb:33:in `each''
        from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/loader.rb:30:in `each''
        from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
`load_all''
        from /apps/puppet/facter/lib/facter.rb:183:in `loadfacts''
        from /data/puppet/lib/facter/AAA_facts.rb:22
        from /apps/puppet/facter/lib/facter/util/loader.rb:72:in `load''
        from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load_file''
        from /apps/puppet/facter/lib/facter/util/loader.rb:38:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/loader.rb:33:in `each''
        from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/loader.rb:30:in `each''
        from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
`load_all''
        from /apps/puppet/facter/lib/facter.rb:183:in `loadfacts''
        from /data/puppet/lib/facter/AAA_facts.rb:22
.
.
.
        from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
`load_all''
        from /apps/puppet/facter/lib/facter.rb:183:in `loadfacts''
        from /data/puppet/lib/facter/AAA_facts.rb:22
        from /apps/puppet/facter/lib/facter/util/loader.rb:72:in `load''
        from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load_file''
        from /apps/puppet/facter/lib/facter/util/loader.rb:38:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/loader.rb:33:in `each''
        from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/loader.rb:30:in `each''
        from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`load_all''
        from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
`load_all''
        from /apps/puppet/facter/lib/facter.rb:91:in `to_hash''
        from /apps/puppet/facter/bin/facter:138

So, as we can see, line 22 of AAA_facts.rb is the rescue loadfacts(), which
keep trying to load the same file AAA_site_facts.rb

Then, I rename the files back to the original names without the prefix:
# ls -1
dc_loc.rb
facts.rb

and facter runs OK.

So, I think, maybe something in the file name - so I rename them as their
roles have evolved:
# mv dc_loc.rb ks_facts.rb
# mv facts.rb site_facts.rb
# ls -1
ks_facts.rb
site_facts.rb

now facter infinitely loops again.

So, I think maybe it is the order of the files in the directory, and rename
them:
# mv ks_facts.rb 002-ks_facts.rb
# mv site_facts.rb 001-site_facts.rb
# ls -1
001-site_facts.rb
002-ks_facts.rb

and facter infinitely loops again.

This is driving me nuts. I must be doing something wrong here for file names
to affect facter running.

Any pointers or help would be appreciated here! Note that this is my first
foray into Ruby & Puppet, so I am sure there is room for improvement

Thanks

John

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John Warburton

2009-Jul-13 03:19 UTC

head link

[Puppet Users] Re: Facter infinite looping on custom facts

I received no replies, so am putting it down to my lack of Ruby
knowledge...

I ended up combining the two files, so that the dependency is handled
in line

Thanks to all that took a look

John

On Jul 1, 2:21 pm, John Warburton <jwarbur...@gmail.com>
wrote:> Hi All
>
> Background:
> I am running Puppet to configure ESX 3.5 servers by NFS mounting the Puppet
> binaries and configuration from a shared server. This is to ensure VMware
> don''t come back refusing support for installing non standard
software on the
> server.
>
> # ruby -v
> ruby 1.8.7 (2009-04-08 patchlevel 160) [i686-linux]
> # facter -v
> 1.5.5
>
> RUBYLIB=/apps/puppet/puppet/lib:/apps/puppet/facter/lib:/data/puppet/lib
>
> I have 2 custom Ruby fact files in /data/puppet/lib/facter which
followhttp://reductivelabs.com/trac/puppet/wiki/AddingFacts
>
> dc_loc.rb (http://pastie.org/530294) - reads a file generated during a
> kickstart with the Kickstart environment in name=value pairs and makes them
> facts. Generates the important "location" fact.
>
> facts.rb (http://pastie.org/530296) - Uses the "location" fact to
load up
> location specific file with site specific configuration. It uses the rescue
> call as describe in "Adding Facts":
> begin
>     Facter.location
> rescue
>     Facter.loadfacts()  # Line 22
> end
>
> Most of the time, facter works
> # facter
> architecture => i386
> .
> esx_version => 3.5.0u3
> facterversion => 1.5.5
> .
> .
> location => HERE
> .
> .
>
> However, sometimes, some servers (I can''t see a pattern yet) will
have
> facter go into an infinite loop until there is no more memory. The only way
> I have been able to reproduce it, is with renaming the files. NB The files
> originally were named with the "AAA" prefix (actual TLA hidden to
protect
> the innocent)
>
> AAA_dc_loc.rb
> AAA_facts.rb
>
> # facter
> /apps/puppet/facter/lib/facter/util/ip.rb:60:in ``'': Cannot
allocate memory
> - /sbin/ifconfig -a (Errno::ENOMEM)
>         from /apps/puppet/facter/lib/facter/util/ip.rb:60:in
> `get_all_interface_output''
>         from /apps/puppet/facter/lib/facter/util/ip.rb:48:in
> `get_interfaces''
>         from /apps/puppet/facter/lib/facter/interfaces.rb:20
>         from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load_file''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:38:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`each''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`each''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
> `load_all''
>         from /apps/puppet/facter/lib/facter.rb:183:in `loadfacts''
>         from /data/puppet/lib/facter/AAA_facts.rb:22
>         from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load_file''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:38:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`each''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`each''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
> `load_all''
>         from /apps/puppet/facter/lib/facter.rb:183:in `loadfacts''
>         from /data/puppet/lib/facter/AAA_facts.rb:22
>         from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load_file''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:38:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`each''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`each''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
> `load_all''
>         from /apps/puppet/facter/lib/facter.rb:183:in `loadfacts''
>         from /data/puppet/lib/facter/AAA_facts.rb:22
> .
> .
> .
>         from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
> `load_all''
>         from /apps/puppet/facter/lib/facter.rb:183:in `loadfacts''
>         from /data/puppet/lib/facter/AAA_facts.rb:22
>         from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:72:in
`load_file''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:38:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`each''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:33:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`each''
>         from /apps/puppet/facter/lib/facter/util/loader.rb:30:in
`load_all''
>         from /apps/puppet/facter/lib/facter/util/collection.rb:90:in
> `load_all''
>         from /apps/puppet/facter/lib/facter.rb:91:in `to_hash''
>         from /apps/puppet/facter/bin/facter:138
>
> So, as we can see, line 22 of AAA_facts.rb is the rescue loadfacts(), which
> keep trying to load the same file AAA_site_facts.rb
>
> Then, I rename the files back to the original names without the prefix:
> # ls -1
> dc_loc.rb
> facts.rb
>
> and facter runs OK.
>
> So, I think, maybe something in the file name - so I rename them as their
> roles have evolved:
> # mv dc_loc.rb ks_facts.rb
> # mv facts.rb site_facts.rb
> # ls -1
> ks_facts.rb
> site_facts.rb
>
> now facter infinitely loops again.
>
> So, I think maybe it is the order of the files in the directory, and rename
> them:
> # mv ks_facts.rb 002-ks_facts.rb
> # mv site_facts.rb 001-site_facts.rb
> # ls -1
> 001-site_facts.rb
> 002-ks_facts.rb
>
> and facter infinitely loops again.
>
> This is driving me nuts. I must be doing something wrong here for file
names
> to affect facter running.
>
> Any pointers or help would be appreciated here! Note that this is my first
> foray into Ruby & Puppet, so I am sure there is room for improvement
>
> Thanks
>
> John--~--~---------~--~----~------------~-------~--~----~
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