Postgres的GitLab Omnibus配置

我正在尝试安装gitlab_6.8.1-omnibus.4-1_amd64.deb我的开发Debian 7(Wheezy)机器,其中已经安装了Postgres 9.1.

当我跑的时候sudo gitlab-ctl reconfigure我发现了一个错误:

Error executing action `run` on resource 'execute[migrate database]'
    ======================================================================

    Mixlib::ShellOut::ShellCommandFailed  
------------------------------------
Expected process to exit with [0], but received '1'
---- Begin output of /opt/gitlab/bin/gitlab-rake db:migrate ----
STDOUT:
STDERR: WARNING: Nokogiri was built against LibXML version 2.8.0, but has dynamically loaded 2.7.8
rake aborted!
FATAL:  password authentication failed for user "gitlab"
FATAL:  password authentication failed for user "gitlab"

我在Postgres中创建了两个用户git和gitlab(使用密码git和gitlab),但它没有帮助.

/var/log/postgresql/postgresql-9.1-main.log 充满了身份验证错误:

2014-05-10 14:51:30 MSK FATAL:  password authentication failed for user "gitlab"

如何配置PostgreSQL选项来安装GitLab Omnibus？