JuliusBrussee/caveman · error

postgres: set only %s or %s, not both

Error message

postgres: set only %s or %s, not both

What it means

Error "postgres: set only %s or %s, not both" thrown in JuliusBrussee/caveman.

Source

Thrown at shared/platform/postgresconfig/postgresconfig.go:83

	for _, fallback := range config.ConnConfig.Fallbacks {
		if fallback.TLSConfig == nil {
			if production {
				return nil, errors.New("postgres: production connection includes a plaintext fallback")
			}
			continue
		}
		fallback.TLSConfig.RootCAs = roots
		fallback.TLSConfig.InsecureSkipVerify = false
		fallback.TLSConfig.ServerName = fallback.Host
	}
	return config, nil
}

func caPEMFromEnvironment() (string, error) {
	filePath := strings.TrimSpace(os.Getenv(caFileEnvironment))
	direct := strings.TrimSpace(os.Getenv(caEnvironment))
	if filePath != "" && direct != "" {
		return "", fmt.Errorf("postgres: set only %s or %s, not both", caFileEnvironment, caEnvironment)
	}
	if filePath == "" {
		return direct, nil
	}
	info, err := os.Stat(filePath)
	if err != nil {
		return "", fmt.Errorf("postgres: %s: %w", caFileEnvironment, err)
	}
	if !info.Mode().IsRegular() {
		return "", fmt.Errorf("postgres: %s must point to a regular file", caFileEnvironment)
	}
	contents, err := os.ReadFile(filePath)
	if err != nil {
		return "", fmt.Errorf("postgres: read %s: %w", caFileEnvironment, err)
	}
	return strings.TrimSpace(string(contents)), nil
}

View on GitHub (pinned to 27d5a3981a)

Solutions

1. Set only one of the two mutually exclusive Postgres variables.

When it happens

Trigger: Thrown at shared/platform/postgresconfig/postgresconfig.go:83 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15). Data as JSON: /api/errors/4c9cfe2a70cd01a6. Report an issue: GitHub.