pgadmin4 can't connect to postgres running over Rocky Linux - linux

Question

The postgres is running on Rocky Linux 8.5:
sudo systemctl status postgresql-14
● postgresql-14.service - PostgreSQL 14 database server
Loaded: loaded (/usr/lib/systemd/system/postgresql-14.service; enabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/postgresql-14.service.d
└─override.conf
Active: active (running) since Thu 2022-03-10 04:31:09 GMT; 16min ago
Docs: https://www.postgresql.org/docs/14/static/
Process: 67527 ExecStartPre=/usr/pgsql-14/bin/postgresql-14-check-db-dir ${PGDATA} (code=exited, status=0/SUCCESS)
Main PID: 67534 (postmaster)
Tasks: 8 (limit: 101066)
Memory: 18.3M
CGroup: /system.slice/postgresql-14.service
├─67534 /usr/pgsql-14/bin/postmaster -D /mnt/data/db-rocky-primary/data
├─67536 postgres: logger
├─67538 postgres: checkpointer
├─67539 postgres: background writer
├─67540 postgres: walwriter
├─67541 postgres: autovacuum launcher
├─67542 postgres: stats collector
└─67543 postgres: logical replication launcher
Mar 10 04:31:08 db-primary-rocky systemd[1]: Starting PostgreSQL 14 database server...
Mar 10 04:31:09 db-primary-rocky postmaster[67534]: 2022-03-10 04:31:09.590 GMT [67534] LOG: redirecting log output to logging collector process
Mar 10 04:31:09 db-primary-rocky postmaster[67534]: 2022-03-10 04:31:09.590 GMT [67534] HINT: Future log output will appear in directory "log".
Mar 10 04:31:09 db-primary-rocky systemd[1]: Started PostgreSQL 14 database server.
I can connect to it with no issues when on the box:
psql
psql (14.2)
Type "help" for help.
postgres=# \conninfo
You are connected to database "postgres" as user "postgres" via socket in "/var/run/postgresql" at port "5432".
I have added this to the pg_hba.conf file:
host all all 192.168.1.0/24 trust
I have also changed the following in the postgresql.conf file and restarted the server:
listen_addresses = '*'
why I can't connect to it via pgadmin4? I am sitting in the 192.168.1.0/24 network and the PostgreSQL running in 192.168.1.0/24 network.
Both networks can ping each other. The pgadmin4 gives connection refused error. I am not sure why?
what am I missing?
thanks

Answer 1

As per #Nic3500 comment, that's how I fixed it:
check if postgres is listening on the designated port:
sudo netstat -nltp
Now check if firewall is enabled:
systemctl status firewalld
OR
sudo firewall-cmd --state
if the service is active and running then simply do the following:
sudo firewall-cmd --add-service=postgresql
Make the settings permanent:
sudo firewall-cmd --runtime-to-permanent
Now you can connect with no issues