Installing HDF Services on an Existing HDP Cluster
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Install Postgres

If you have already installed a MySQL database, you may skip these steps.

Note
Note

You must install Postgres 9.5 or later for SAM and Schema Registry. Ambari does not install Postgres 9.5, so you must perform a manual Postgres installation.

  1. Install Red Hat Package Manager (RPM) according to the requirements of your operating system:
    yum install https://yum.postgresql.org/9.6/redhat/rhel-7-x86_64/pgdg-redhat96-9.6-3.noarch.rpm
  2. Install Postgres version 9.5 or later:
    yum install postgresql96-server postgresql96-contrib postgresql96
  3. Initialize the database:
    For CentOS 7, use the following syntax:
    /usr/pgsql-9.6/bin/postgresql96-setup initdb
  4. Start Postgres.

    For example, if you are using CentOS 7, use the following syntax:

    systemctl enable postgresql-9.6.service
    systemctl start postgresql-9.6.service 
  5. Verify that you can log in:
    sudo su postgres
    psql