i was using cloudera manager 5.0.2 and it was working fine , i wanted to upgrade it to latest version ( 5.3.2 ) i followed the exact steps here : http://www.cloudera.com/content/cloudera/en/documentation/core/latest/topics/cm_ag_upgrade_cm5.html
using packages update
then when i tried to start scm server db using
sudo service cloudera-scm-server-db start
it failed to start giving this error :

Creating DB navms for role NAVIGATORMETASERVER
waiting for server to start..... done
server started
psql: could not connect to server: Connection timed out
Is the server running on host "localhost" and accepting
TCP/IP connections on port 7432?
waiting for server to shut down.... done
server stopped
Unable to create database role navms, giving up
waiting for server to start..... done
server started

then i tried to start scm server

sudo service cloudera-scm-server start
i tried to open UI on
host:7180
nothing works

also tried to get cloudera-scm-server status it was dead :

sudo service cloudera-scm-server status
cloudera-scm-server dead but pid file exists

and running psql -U cloudera-scm -p 7432 -h localhost -d postgres
it gives same error
psql: could not connect to server: Connection timed out
Is the server running on host "localhost" and accepting
TCP/IP connections on port 7432?