Chef running git clone results in host key verification error - capistrano

Question

I am using Chef, invoked by Capistrano.
There is a directive to clone a repository using git.
git node['rails']['rails_root'] do
repository "git#myrepo.com:/myproj.git"
reference "master"
action :sync
user node['rails']['rails_user']
group node['rails']['rails_group']
end
When it gets to this point, I get:
** [out :: 10.1.1.1] STDERR: Host key verification failed.
So, I need to add a "known_hosts" entry. No problem. But to which user? The core of my problem is that I have no idea which user is executing what commands, and if they are invoking sudo, etc.
I've run keyscan to populate the known_hosts of root, and the user I ssh in as, to no avail.
Note, this git repo is read-protected, and requires ssh key access.

Answer 1

Another way to solve https://github.com/opscode-cookbooks/ssh_known_hosts
this worked for me

Answer 2

You can use an ssh wrapper approach. Look here for details.
Briefly do the following steps
First, create a file in the cookbooks/COOKBOOK_NAME/files/default directory that is named wrap-ssh4git.sh and which contains the following:
#!/usr/bin/env bash
/usr/bin/env ssh -o "StrictHostKeyChecking=no" $1 $2
Then, use the following block for your deployment:
directory "/tmp/private_code/.ssh" do
owner "ubuntu"
recursive true
end
cookbook_file "/tmp/private_code/wrap-ssh4git.sh" do
source "wrap-ssh4git.sh"
owner "ubuntu"
mode 00700
end
deploy "private_repo" do
repo "git#github.com:acctname/private-repo.git"
user "ubuntu"
deploy_to "/tmp/private_code"
action :deploy
ssh_wrapper "/tmp/private_code/wrap-ssh4git.sh"
end

Answer 3

The git repository will be cloned as user node['rails']['rails_user'] (via https://docs.chef.io/resource_git.html) - I assume that users known_hosts file is the one you have to modify.

Answer 4

I have resolved this issue as below
_home_dir = nil
node['etc']['passwd'].each do |user, data|
if user.eql? node['jenkins']['username']
_home_dir = data['dir']
end
end
key_config ="Host *\n\tStrictHostKeyChecking no\n"
file "#{_home_dir}/.ssh/config" do
owner node['jenkins']['username']
group node['jenkins']['username']
mode "0600"
content key_config
end