portainer/portainer · error

unable to start exec process: %w

Error message

unable to start exec process: %w

What it means

Error "unable to start exec process: %w" thrown in portainer/portainer.

Source

Thrown at api/kubernetes/cli/exec.go:95

		log.Warn().
			Err(err).
			Str("context", "StartExecProcess").
			Msg("WebSocket exec failed, falling back to SPDY")
	}

	// Fall back to SPDY executor
	exec, err = remotecommand.NewSPDYExecutor(config, "POST", req.URL())
	if err != nil {
		params.ErrChan <- fmt.Errorf("unable to create SPDY executor: %w", err)
		return
	}

	err = exec.StreamWithContext(context.TODO(), streamOpts)
	if err != nil {
		var exitError utilexec.ExitError
		if !errors.As(err, &exitError) {
			params.ErrChan <- fmt.Errorf("unable to start exec process: %w", err)
			return
		}
	}

	params.ErrChan <- nil
}

View on GitHub (pinned to 17e74456ff)

When it happens

Trigger: Thrown at api/kubernetes/cli/exec.go:95 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of portainer/portainer@17e74456ff (2026-08-26). Data as JSON: /api/errors/5112709ff5222688. Report an issue: GitHub.