The 'passenger_use_global_queue' directive is obsolete is often seen in error logs on centos/modern nginx.
... for more.
Hey Daniel O'Connor there are some comments on the Pull Request. Can you please remove the other references to this attribute in the cookbook? Please remark this ticket as "Fix Provided" then.
Merged in https://github.com/opscode-cookbooks/nginx/commit/a64991d
Released in 2.0.0