postgres service can't restart/start

Hi experts,
I am trying to install Postgresql 11.1 replication master-slave.  The configure, make and make install went well.  Initdb to the shared drive and psql are up and running. After configured pg_hba.conf and postgresql.conf, I can't restart the service and/or reload.  Error is:ATHENTICATING for org.freedesktop.systemd1.manage-units ---Athentication is required to manage system services or units.authenticating as :user1Password:-- ATHENTICATION COMPLETE --Failed to start psotgres-11.service: unit no found.
I worked around and add the postgres on pg_hba.conf and using pg_ctl to reload the service.  Postgres server stopped but can't start, it complained about checkpoint_segments which I have set its to 8.
Working with SA to reconfigure the authenticating and the server reaching out and getting authenticaion from org.freedesktop.systemd1.nanage-units.  How can I by pass this issue and bring the postgres up?

Bach-Nga

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