chef-server:

==> /var/log/chef-server/erchef/current <==
2014-04-23_09:46:53.31003 json too large (<<"JSON must be no more than 1000000 bytes.">>)

chef-client:

[2014-04-23T09:50:41+00:00] ERROR: 413 "Request Entity Too Large"
[2014-04-23T09:50:41+00:00] FATAL: Chef::Exceptions::ChildConvergeError: Chef run process exited unsuccessfully (exit code 1)