Postgres Issues

This page covers database initialization and startup issues.

initdb Fails on RHEL

Symptom: The postgresql-{{ pg_version }}-setup initdb command fails.

Solution: Verify that the Postgres packages are installed. Check the data directory permissions:

ls -la /var/lib/pgsql/17

Manually run initdb and review the output for errors:

sudo /usr/pgsql-17/bin/postgresql-17-setup initdb

Service Won't Start

Symptom: The Postgres service fails to start after setup.

Solution: Check the Postgres logs for the root cause:

# Systemd journal
sudo journalctl -u postgresql-17 -n 50 --no-pager

# Debian log file
sudo tail -f /var/log/postgresql/postgresql-17-main.log

# RHEL log file
sudo tail -f /var/lib/pgsql/17/data/log/postgresql-*.log

Check for port conflicts:

netstat -tnlp | grep 5432

Extension Installation Fails

Symptom: The Spock or Snowflake extensions fail to install.

Solution: Verify that the pgEdge packages include the required extension files:

ls -la /usr/pgsql-17/share/extension/spock*
ls -la /usr/pgsql-17/share/extension/snowflake*

Confirm that shared_preload_libraries lists the extensions and restart Postgres after any configuration change.