Does the "mon-host" configuration need to be exactly the same as the one in ceph.conf?

[dennis9352]

I tried connecting to a remote Ceph-mon server that is not in the same network, but it did not proceed from rados.conn.Connect(). Then, I tried running it from a server in the same network, and it worked.

If I need to use a proxy in the middle, the mon-host will change, so is there a way to separately configure the address to connect to ceph-mon and the mon-host setting in ceph.conf? To illustrate the situation I tested:

192.168.0.60 (my computer) -> 192.168.0.240:3300 -> 172.168.0.230:3300 (ceph)

In this case, I would have to set the mon-host to 192.168.0.240:3300, which wouldn't match the ceph.conf.

However, if I set it to 172.168.0.231 -> 172.168.0.230:3300 (ceph), it seems to match the ceph.conf and the connection works. Is there an option to separate these configurations? Or is there a configuration mistake I might have made?

func StartCeph(address string, port int, cephKey string) error {
	if err := TestConnection(address, port); err != nil {
		return fmt.Errorf("failed to connect to ceph %s:%d: %w", address, port, err)
	}

	Instance = &Ceph{mu: &sync.Mutex{}}

	conn, err := rados.NewConn()
	if err != nil {
		return fmt.Errorf("failed to create new RADOS connection: %w", err)
	}

	Instance.conn = conn

	args := []string{
		"--mon-host", fmt.Sprintf("%s:%d", address, port),
		"--key", cephKey,
		"--client-mount-timeout", "30",
		"--debug-ms", "20",
	}

	if err := conn.ParseCmdLineArgs(args); err != nil {
		return fmt.Errorf("failed to parse configuration options: %w", err)
	}

	if err := conn.Connect(); err != nil {
		return fmt.Errorf("failed to connect to Ceph cluster: %w", err)
	}

	return nil
}