Getting error - cannot load such file -- chef/rest (LoadError)

williamTiller · July 10, 2021, 9:45pm

Hi, I’m trying to set up chef (and especially knife) for a local development on my local machine. I use rbenv + bundler to manage ruby and packages. Server is in 14.13.11 so I have installed chef gem with that particular version too. I have a working .chef/ setup as when I use it on another machine, everything works fine. However, when I use it on my local machine, I get:

/Users/me/.rbenv/versions/2.7.2/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require': cannot load such file -- chef/rest (LoadError)```
even when I use `knife help` . Any ideas? I'm asking here before I create a ticket.

williamTiller · July 10, 2021, 9:52pm

I know about https://docs.chef.io/deprecations_chef_rest/

but it looks like some internal component of chef uses these

kPate · July 10, 2021, 10:52pm

“Server is in 14.13.11 so I have installed chef gem with that particular version too” is the wrong logic

kPate · July 10, 2021, 11:53pm

That’s a relatively current server so you should be on chef-17.x probably

kPate · July 11, 2021, 12:30am

And you should consider using the omnibus-chef install

kPate · July 11, 2021, 12:43am

If you go with bundler + rbenv you’re a bit on your own

williamTiller · July 11, 2021, 1:57am

I started off by installing the newest chef gem but got this error so I downgraded to align with the server version, so same stuff on the newest

kPate · July 11, 2021, 2:18am

Chef-14.x would have never supported ruby 2.7 though, that would be chef-16+

kPate · July 11, 2021, 3:37am

The server and client versions aren’t at all aligned

kPate · July 11, 2021, 5:23am

Even though it says “chef/rest” that error has nothing to do with the server

williamTiller · July 11, 2021, 6:33am

Understood about the versioning. Yeah, I figured this is a client package error

kPate · July 11, 2021, 7:00am

Ir you’re trying to do it on your own you’re going to have to figure out the ruby versions that chef-client supports. in the april following the ruby version release we update the client os that it runs on it. so chef-client 17 for ruby 3.0 is current. chef-client 16 was current when ruby 2.7 was released

kPate · July 11, 2021, 8:09am

Chef-17 is actually busted on ruby 2.7 due to bugs as well

williamTiller · July 11, 2021, 8:29am

Btw. doesn’t chef gem state which ruby version it supports? shouldn’t it bark when I try to install a wrong gem version for a wrong ruby version?

williamTiller · July 11, 2021, 8:38am

Ok, I’ve done:
gem install --default -v16.13.16 chef
now it’s:

$ knife
Traceback (most recent call last):
	4: from /Users/me/.rbenv/versions/2.7.2/bin/knife:23:in `&lt;main&gt;'
	3: from /Users/me/.rbenv/versions/2.7.2/bin/knife:23:in `load'
	2: from /Users/me/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/chef-16.13.16/bin/knife:22:in `&lt;top (required)&gt;'
	1: from /Users/me/.rbenv/versions/2.7.2/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require'
/Users/me/.rbenv/versions/2.7.2/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require': cannot load such file -- chef/application/knife (LoadError)```

williamTiller · July 11, 2021, 9:35am

What’s the supported installation mode then? Isn’t rbenv + bundler a standard?

kPate · July 11, 2021, 11:16am

curl -L [https://omnitruck.chef.io/install.sh](https://omnitruck.chef.io/install.sh) | sudo bash -s -- -P chef -v 17

kPate · July 11, 2021, 12:53pm

Or install the mixlib-install gem: mixlib-install download chef -v 17

kPate · July 11, 2021, 2:01pm

Or downloads.chef.io

kPate · July 11, 2021, 2:07pm

Although for workstation use you should really use chef-workstation instead of chef