Hi all if i put maxteamsize 1 in my server.cfg will this start as a solo server ?

If that is a valid command, I would assume so; but I'm not familiar with that command.

do you no what the command is to set the team size i did put that in and it comes up with below after i put it in console 

relationshipmanager.maxteamsize: "4"

According to the Libraries provided by Rust it would work, just put "relationshipmanager.maxteamsize 0" in the server.cfg/commandline (would go with "+" prefix) and teams would be disabled. I'm too lazy to check that on a real server tho...

[ServerUserVar]
public static void trycreateteam(ConsoleSystem.Arg arg)
{
	if (maxTeamSize == 0)
	{
		arg.ReplyWith("Teams are disabled on this server");
		return;
	}
	BasePlayer basePlayer = ArgEx.Player(arg);
	if (basePlayer.currentTeam == 0)
	{
		PlayerTeam playerTeam = Instance.CreateTeam();
		playerTeam.teamLeader = basePlayer.userID;
		playerTeam.AddPlayer(basePlayer);
	}
}​

thank you