pgadmin, postgres and gogole cloud connection time out - postgresql

Question

I followed this tutorial.
I managed to set up everything and do exactly as it was mentioned in the tutorial.
But when I tried to connect to it using PGADMIN 4, i get connection time and out and I was never able to fix it.
then I found this link, which has the following command:
sudo -i -u postgres
psql
\conninfo
then I cans see the following message:
You are connected to database "postgres" as user "postgres" via socket in "/var/run/postgresql" at port "5432".
So I dont understand what is wrong now and when I type:
sudo nano ../../etc/postgresql/9.3/main/pg_hba.conf
to see the content of the file and I put my password, its not being accepted.
Then I restart everything by closing the window and open it again, then I can check out the file:
# If you change this first entry you will need to make sure that the
# database superuser can access the database using some other method.
# Noninteractive access to all databases is required during automatic
# maintenance (custom daily cronjobs, replication, and similar tasks).
#
# Database administrative login by Unix domain socket
local all postgres peer
# TYPE DATABASE USER ADDRESS METHOD
# "local" is for Unix domain socket connections only
local all all peer
# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local replication postgres peer
#host replication postgres 127.0.0.1/32 md5
#host replication postgres ::1/128 md5
# IPv4 remote connections for the tutorial:
#host all all 127.0.0.1/32 md5
#host all all 35.196.55.208/32 md5
host all all all md5
The last 4 lines I've added to fix the problem, but nothing yet.
What am I doing wrong? I'm looking at many tutorials, and also several pages from Stack Overflow but still nothing!

Answer 1

You have not provided permission to connect remotely.
In the given tutorial, Connecting remotely section it is clearly mentioned that you need to provide your IP address in the pg_hba.conf file.
Replace [YOUR_IPV4_ADDRESS] with the address of your local computer.
Also, In the Instances page in the Google Cloud Platform Console, click the
instance to open its Overview page. Select the Authorization tab.
Under Authorized networks, click Add network and enter the IP address
of the client machine where your client is installed. Click Done, then
click Save at the bottom of your page to save your changes. Connect to
your instance, either with SSL or without SSL.
Provide your IP address in the pg_hba.conf file, Restart Postgres service and try again.