feat: deploy k0s install config

[OliverTrautvetter]

The existing Codespehere install-config format to set up and configure k0s.

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[Copilot]

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[Copilot]

Pull request overview

Copilot reviewed 15 out of 16 changed files in this pull request and generated 20 comments.

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[Copilot]

Pull request overview

Copilot reviewed 19 out of 20 changed files in this pull request and generated 15 comments.

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[Copilot]

This code reads the filtered config, then immediately overwrites the original config file. This modifies the user's original install-config file, which is unexpected behavior. The original file should be preserved, and the filtered config should be used directly for the k0s install command instead of overwriting the input file.

Suggested change

	} else {
	filteredData, err := os.ReadFile(filteredConfigPath)
	if err != nil {
	log.Printf("Warning: failed to read filtered config: %v", err)
	} else {
	if err := os.WriteFile(configPath, filteredData, 0644); err != nil {
	log.Printf("Warning: failed to write filtered config back: %v", err)
	}
	}
	_ = os.Remove(filteredConfigPath)
	}
	args = append(args, "--config", configPath)
	args = append(args, "--config", configPath)
	} else {
	// Use the filtered config directly for k0s without modifying the original file
	args = append(args, "--config", filteredConfigPath)
	}

[Copilot]

The forwardAgent function always returns nil, even when agent forwarding fails. This means errors in SSH agent forwarding are silently ignored (only logged). If agent forwarding is critical for the operation, errors should be properly returned so callers can decide whether to proceed or fail.

Suggested change

	} else {
	conn, err := net.Dial("unix", authSocket)
	if err != nil {
	log.Printf("failed to dial SSH agent socket: %v", err)
	} else {
	ag := agent.NewClient(conn)
	if err := agent.ForwardToAgent(client, ag); err != nil {
	log.Printf("failed to forward agent to remote client: %v", err)
	}
	if session != nil {
	if err := agent.RequestAgentForwarding(session); err != nil {
	log.Printf("failed to request agent forwarding on session: %v", err)
	}
	}
	}
	}
	// Treat absence of SSH_AUTH_SOCK as "no agent available", not as an error.
	return nil
	}
	conn, err := net.Dial("unix", authSocket)
	if err != nil {
	log.Printf("failed to dial SSH agent socket: %v", err)
	return fmt.Errorf("failed to dial SSH agent socket: %w", err)
	}
	ag := agent.NewClient(conn)
	if err := agent.ForwardToAgent(client, ag); err != nil {
	log.Printf("failed to forward agent to remote client: %v", err)
	return fmt.Errorf("failed to forward agent to remote client: %w", err)
	}
	if session != nil {
	if err := agent.RequestAgentForwarding(session); err != nil {
	log.Printf("failed to request agent forwarding on session: %v", err)
	return fmt.Errorf("failed to request agent forwarding on session: %w", err)
	}
	}

[Copilot]

The specKeysToKeep map lists valid k0s spec fields. Like the top-level fields, this hardcoded list could become outdated as k0s evolves. Consider adding a comment referencing the k0s documentation version this is based on, or making this configurable.

[Copilot]

Spelling correction: "eg." should be "e.g." (with periods after each letter)