The version of Postgresql shipped on the Rails One-Click application is the default version from the Ubuntu repositories. No custom init script is used. By default Ubuntu 14.04 ships Postgresql 9.3. Have you installed installed a new version from a third-party repository? Can you share the init script and any relevant logs?

I upgraded postgres from default repo, didnt use any other. Later I found that I had installed already postgres 10, so when I upgraded my pgcluster to 10 it started to work.
But later, I forgot to remove old postgres install files and after their upgrade, it is not working again. I did test like 10 minutes ago, service postgresql stop/start did nothing, I have to run it manually with pg_ctl command

this is my init script

#!/bin/sh
set -e

### BEGIN INIT INFO
# Provides:             postgresql
# Required-Start:       $local_fs $remote_fs $network $time
# Required-Stop:        $local_fs $remote_fs $network $time
# Should-Start:         $syslog
# Should-Stop:          $syslog
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    PostgreSQL RDBMS server
### END INIT INFO

# Setting environment variables for the postmaster here does not work; please
# set them in /etc/postgresql/<version>/<cluster>/environment instead.

[ -r /usr/share/postgresql-common/init.d-functions ] || exit 0

. /usr/share/postgresql-common/init.d-functions

# versions can be specified explicitly
if [ -n "$2" ]; then
    versions="$2 $3 $4 $5 $6 $7 $8 $9"
else
    get_versions
fi

case "$1" in
    start|stop|restart|reload)
        if [ "$1" = "start" ]; then
            create_socket_directory
        fi
        if [ -z "`pg_lsclusters -h`" ]; then
            log_warning_msg 'No PostgreSQL clusters exist; see "man pg_createcluster"'
            exit 0
        fi
        for v in $versions; do
            $1 $v || EXIT=$?
        done
        exit ${EXIT:-0}
        ;;
    status)
        LS=`pg_lsclusters -h`
        # no clusters -> unknown status
        [ -n "$LS" ] || exit 4
        echo "$LS" | awk 'BEGIN {rc=0} {if (match($4, "down")) rc=3; printf ("%s/%s (port %s): %s\n", $1, $2, $3, $4)}; END {exit rc}'
        ;;
    force-reload)
        for v in $versions; do
            reload $v
        done
        ;;
    *)
        echo "Usage: $0 {start|stop|restart|reload|force-reload|status} [version ..]"
        exit 1
        ;;
esac

exit 0