Chef server 12 reconfiguration is not working on Ubuntu 14.04 - postgresql

Question

I'm trying to install a Chef server on an Ubuntu 14.04 box. I've downloaded the .deb file from the site and installed with sudo dpkg -i chef-server-core_12.0.8-1_amd64.deb but when I do sudo chef-server-ctl reconfigure all goes well until it reaches the postgresql part:
Running handlers:
[2015-05-03T23:16:07-04:00] ERROR: Running exception handlers
Running handlers complete
[2015-05-03T23:16:07-04:00] ERROR: Exception handlers complete
[2015-05-03T23:16:07-04:00] FATAL: Stacktrace dumped to /opt/opscode/embedded/cookbooks/cache/chef-stacktrace.out
Chef Client failed. 44 resources updated in 198.107797872 seconds
[2015-05-03T23:16:08-04:00] FATAL: Mixlib::ShellOut::ShellCommandFailed: private-chef_pg_database[opscode-pgsql] (private-chef::postgresql line 127) had an error: Mixlib::ShellOut::ShellCommandFailed: execute[create_database_opscode-pgsql] (/opt/opscode/embedded/cookbooks/cache/cookbooks/private-chef/providers/pg_database.rb line 13) had an error: Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received '1'
---- Begin output of createdb --template template0 --encoding UTF-8 opscode-pgsql ----
STDOUT:
STDERR: createdb: could not connect to database template1: FATAL: role "opscode-pgsql" does not exist
---- End output of createdb --template template0 --encoding UTF-8 opscode-pgsql ----
Ran createdb --template template0 --encoding UTF-8 opscode-pgsql returned 1
Am I missing any step? The installation instruction does not say anything about any other middle task to perform.
Thank you very much for any help you can give me.

Answer 1

Saw exact same error installing chef-server-core-12.0.8-1.el6.x86_64.rpm on RHEL6.6. Had gone through every pre-req step listed at https://docs.chef.io/install_server_pre.html ... finally chalked it up to having multiple versions of Postgres on the system.
Attempted the same install and reconfigure command (chef-server-ctl reconfigure) on a system without Postgres installed and had success.
HTH.

Answer 2

Cannot reproduce your problem. The installation of chef server 12.0.8-1 worked fine on my kitchen/vagrant setup
Example
├── Berksfile
├── .kitchen.yml
├── roles
   └── chef-server.json
Berksfile
source "https://supermarket.chef.io"
cookbook "chef-server"
kitchen.yml
---
driver:
name: vagrant
provisioner:
name: chef_zero
platforms:
- name: ubuntu-14.04
driver:
network:
- ["private_network", {ip: "192.168.38.34"}]
customize:
memory: 4096
suites:
- name: default
run_list:
- role[chef-server]
attributes:
roles/chef-server.json
{
"name": "chef-server",
"description": "Chef server",
"run_list": [
"recipe[chef-server]"
]
}