Why could `rb_sysopen` not be found anymore by the custom fact since the upgrade to Puppet4?

Question

# returns latest packerversion, e.g. 0.10.1
Facter.add("latest_packerversion") do
  setcode do
    url="https://www.packer.io/downloads.html"

    file = open("#{url}")
    contents = file.read()

    match = contents.match(/Latest\sversion:\s(.*)</)
    match[1]
  end
end

worked using puppet 3.6.2, but since the upgrade to 4.5.2 the following issue occurs:

Error: Facter: error while resolving custom fact "latest_packerversion":
No such file or directory @ rb_sysopen - https://www.packer.io/downloads.html

Analysis

It seems that the rb_sysopen could not be found anymore for some reason (No such file or directory @ rb_sysopen) since the upgrade to Puppet 4.
Puppet4 seems to use an embedded ruby version instead of the one installed on the host (Puppet3):

Puppet 4, both Facter 2.4 and CFacter 0.4, the latest Hiera and Mcollective, as well Ruby 2.1.5, OpenSSL 1.0.0r, and our gem dependencies.

Does rb_sysopen not exist in Ruby 2.1.5? No evidence was found.
Perhaps a change related to facts have occurred that could cause the issue? Nothing related was found in the release notes.

Question

Why could rb_sysopen not be found anymore by the custom fact since the upgrade to Puppet4?

Is this Facter 2 or Facter 3? Facter 3 was rewritten in c++11. Also, this is not what Facter was meant to do (it is for collecting server information). You may want to consider another tool. — Matthew Schuchard, Jun 29 '16 at 23:32

score 0 · Accepted Answer · answered Jun 29 '16 at 19:50

0

Concise

I will include require 'open-uri' in both facts, but I do not understand why this is required since the upgrade to Puppet4

Verbose

Once require 'open-uri' is included in one of the custom facts the issue is solved.

# returns latest gitversion, e.g. 2.8.2
Facter.add("latest_gitversion") do
  setcode do
require 'open-uri'

    url="https://git-scm.com/downloads"

    file = open("#{url}")
    contents = file.read()

    match = contents.match(/RelNotes.*((\d\.){2}\d)/)
    match[1]
  end
end

As soon as the require 'open-uri' has been commented out, the issue occurs again:

Error: Facter: error while resolving custom fact "latest_gitversion": No such file or directory @ rb_sysopen - https://git-scm.com/downloads
Error: Facter: error while resolving custom fact "latest_packerversion": No such file or directory @ rb_sysopen - https://www.packer.io/downloads.html

At the moment it is unclear what is causing the issue.

answered Jun 29 '16 at 19:50

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You are retrieving information via http/apache so `open-uri` is necessary here. – Matthew Schuchard Jun 29 '16 at 23:33
But why did no issue occur when puppet3 was used? – 030 Jun 30 '16 at 09:31
Probably you were using Facter 2 and it was requiring/including `open-uri` higher up, and you are now using Facter 3 and it is not because of the rewrite. – Matthew Schuchard Jun 30 '16 at 10:40
@MattSchuchard `/opt/puppetlabs/bin/facter --version: 3.2.0` – 030 Jun 30 '16 at 12:26
@MattSchuchard Could you post your explanation and suggested workaround as an answer? – 030 Jun 30 '16 at 12:27
You answered it already, so maybe just edit your answer to include something about the change in included gems inside Facter once the http code changed from ruby to c++11. – Matthew Schuchard Jun 30 '16 at 15:14

Why could `rb_sysopen` not be found anymore by the custom fact since the upgrade to Puppet4?

1 Answers1