jackc/pgx · error

kerberos error: no GSSAPI provider registered, see https://g

Error message

kerberos error: no GSSAPI provider registered, see https://github.com/otan/gopgkrb5

What it means

Error "kerberos error: no GSSAPI provider registered, see https://github.com/otan/gopgkrb5" thrown in jackc/pgx.

Source

Thrown at pgconn/krb5.go:38

//	import "github.com/otan/gopgkrb5"
//
//	func init() {
//		pgconn.RegisterGSSProvider(func() (pgconn.GSS, error) { return gopgkrb5.NewGSS() })
//	}
func RegisterGSSProvider(newGSSArg NewGSSFunc) {
	newGSS = newGSSArg
}

// GSS provides GSSAPI authentication (e.g., Kerberos).
type GSS interface {
	GetInitToken(host, service string) ([]byte, error)
	GetInitTokenFromSPN(spn string) ([]byte, error)
	Continue(inToken []byte) (done bool, outToken []byte, err error)
}

func (c *PgConn) gssAuth() error {
	if newGSS == nil {
		return errors.New("kerberos error: no GSSAPI provider registered, see https://github.com/otan/gopgkrb5")
	}
	cli, err := newGSS()
	if err != nil {
		return err
	}

	var nextData []byte
	if c.config.KerberosSpn != "" {
		// Use the supplied SPN if provided.
		nextData, err = cli.GetInitTokenFromSPN(c.config.KerberosSpn)
	} else {
		// Allow the kerberos service name to be overridden
		service := "postgres"
		if c.config.KerberosSrvName != "" {
			service = c.config.KerberosSrvName
		}
		nextData, err = cli.GetInitToken(c.config.Host, service)
	}

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at pgconn/krb5.go:38 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of jackc/pgx@ec1a0befd2 (2026-08-04). Data as JSON: /data/errors/cd0efb4334db74fe.json. Report an issue: GitHub.