PostgreSQL Authentication Failed Troubleshooting Guide
A comprehensive guide on troubleshooting PostgreSQL MCP server authentication failures.
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Author buzhou-tech-vpPublished 2026/03/18 02:54Updated 2026/03/18 18:58
Tools: Database
Partial
Overview
Authentication failures are common when connecting to PostgreSQL MCP servers.
Common Scenarios
Scenario 1: pg_hba.conf Configuration
Error: no pg_hba.conf entry for host
Solution: Edit pg_hba.conf and add proper rules.
Scenario 2: Password Issues
Solution: Reset password using ALTER USER.
Best Practices
- Use dedicated users
- Principle of least privilege
- Enable SSL encryption
Verification Records
No verification records