I'm using the ENC and node.rb mechanism with Foreman version 1.7.4

One of my nodes has suddenly started omitting certain critical classes in the output from the node.rb script.
When I click on the YAML link on the host detail page everything looks OK, but when I run the script there are certain details missing.

It's worth noting that:

• I think they are the most recently added classes
• There are a large number of interfaces on this host which have been erroneously uploaded by the puppet facts.

Issue http://projects.theforeman.org/issues/10279 seems relevant here as well.

This host is a docker server, so it has had lots of ephemeral interfaces named veth??????? which were uploaded to foreman automatically by puppet.
There are 619 interfaces beginning with 'veth' listed when I look at the output from the YAML link, but only 422 isted in the output from node.rb.

I don't want any of these interfaces to be defined, so I have temporarily enabled 'ignore_puppet_facts_for_provisioning' but I can't currently delete these interfaces from this host because it happens to be unmanaged, so I don't have the option to delete them in the interface. I haven't yet tried deleting them in the Rails console.

So it seems to me that it might be something to do with the total size of the yaml output. The output form the YAML link is 109KB but the size of the output from the node.rb script is only 76KB

Thanks.