Unable to use S3 Backing Store for Container Registry error 503

Hi,

I am using Gitlab CE 10.2.2 omnibus installation on CentOS 7. I am trying to configure Gitlab to store the registry backend to aws S3 instance.

I followed the documentation and configure my gitlab.rb like this:

registry['storage'] = { 's3' => { 'accesskey' => 'AKIAKIAKI', 'secretkey' => 'password', 'bucket' => 'aws-gitlab-registry', 'region' => 'eu-west-1' } }

When I try to login to the Docker Registry, it is throwing an 503 code.

Error response from daemon: Login: {"errors":[{"code":"UNAVAILABLE","message":"service unavailable","detail":"health check failed: please see /debug/health"}]} (Code: 503; Headers: map[Content-Length:[125] Server:[nginx] Date:[Fri, 01 Dec 2017 11:12:19 GMT] Content-Type:[application/json; charset=utf-8]])

I am accessing with LDAP users.

Any help would be great. Thanks