No database server found while adding Cloudera Management Service.

I have deployed a single node cluster in my lab.  It consists of two virtual machines implemented in VMware: one manager and one host.

Trying to Add Cloudera Management Service to address warning “Unable to issue query: could not connect to host monitor”.

This is a test of my database:

    [root@cloudera-manager ~]# hostname -A
    cloudera-manager.interop.local cloudera-manager

    [root@cloudera-manager ~]# psql -d scmdb -U scm -W
    Password for user scm:
    psql (10.23)
    Type "help" for help.

I entered the following in the Setup Database  GUI:

    Type: PostgreSQL
    Database Hostname: cloudera-manager.interop.local
    Database Name: scmdb
    Usename: scm
    Password: xxxxxxx

Selecting Test Connection fails.

Any ideas?

Dalier.