- 29 Aug, 2025
- 0 Comments
- 1 Min Read
Error : Postgres service not starting
Error :
Postgres service not starting
Solution
Step 1: Check Service Status
sudo systemctl status postgresql
Step 2: Check Logs
PostgreSQL logs are usually in:
/var/log/postgresql/postgresql-<version>-main.log
Step 3: Common Fixes
Remove stale PID file
Sometimes a crash leaves a postmaster.pid file.
rm -f /var/lib/pgsql/<version>/data/postmaster.pid
Then restart:
sudo systemctl start postgresql
Fix Permissions
Ensure the postgres user owns the data directory:
sudo chown -R postgres:postgres /var/lib/pgsql/<version>/data sudo chmod 700 /var/lib/pgsql/<version>/data
Check Port Conflict
Verify if port 5432 is free:
sudo lsof -i :5432
If another service is using it, stop that service or change PostgreSQL’s port in:
vi /var/lib/pgsql/<version>/data/postgresql.con
Disk Space
Check free space
If disk is full, free up space; PostgreSQL won’t start without it.
Step 4: Restart Service
sudo systemctl restart postgresql
Conclusion
Tuning PostgreSQL for peak performance is a journey, but with a clear understanding of these configuration parameters, you’re well on your way to becoming a pro! At Learnomate Technologies, we’re here to support you every step of the way with top-notch training in PostgreSQL DBA and more.
For more detailed insights and tutorials, do check out our YouTube channel: www.youtube.com/@learnomate, where we regularly share practical tips and deep dives into essential database topics. And if you’re serious about mastering PostgreSQL DBA, head over to our website for our full training program: learnomate.org/training/postgresql-training/.
I’d love to connect with you, so don’t forget to follow my LinkedIn: https://www.linkedin.com/in/ankushthavali/. If you’re eager to read more about various technologies, explore our blog page here: https://learnomate.org/blogs/. Happy learning, and remember—tuning and training go hand-in-hand for database success!