func (c *Client) Close() {
	atomic.StoreInt32(&c.connected, closed)
}

// NewClient - returns new REST client.
func NewClient(uu *url.URL, tr http.RoundTripper, newAuthToken func(aud string) string) *Client {
	connected := int32(online)
	urlStr := uu.String()
	u, err := url.Parse(urlStr)
	if err != nil {
		// Mark offline, with no reconnection attempts.
		connected = int32(offline)
		err = &url.Error{URL: urlStr, Err: err}

...
...
```

Following example shows connecting via ftp client using `minioadmin` credentials, and list a bucket named `runner`:

```
ftp localhost -P 8021
Connected to localhost.
220 Welcome to MinIO FTP Server
Name (localhost:user): minioadmin
331 User name ok, password required
Password:
230 Password ok, continue
Remote system type is UNIX.
Using binary mode to transfer files.

## Configuring Site Replication

- Configure an alias in `mc` for each of the sites. For example if you have three MinIO sites, you may run:

```sh

			writeErr(fmt.Errorf("unexpected connect op: %v", message.Op))
			return
		}
		var cReq connectReq
		_, err = cReq.UnmarshalMsg(message.Payload)
		if err != nil {
			writeErr(fmt.Errorf("error parsing connectReq: %w", err))
			return
		}
		remote := m.targets[cReq.Host]
		if remote == nil {
			writeErr(fmt.Errorf("unknown incoming host: %v", cReq.Host))
			return
		}
		if debugPrint {

		return err
	}
	// Signal that we are reconnected, update state and handle messages.
	// Prevent other connections from connecting while we process.
	c.reconnectMu.Lock()
	if c.remoteID != nil {
		c.reconnected()
	}
	rid := uuid.UUID(req.ID)
	c.remoteID = &rid

	// Handle incoming messages until disconnect.
	c.handleMessages(ctx, conn)
	return nil
}

// reconnected signals the connection has been reconnected.

	return client.endpoint.String()
}

// IsOnline - returns whether RPC client failed to connect or not.
func (client *storageRESTClient) IsOnline() bool {
	return client.gridConn.State() == grid.StateConnected
}

// LastConn - returns when the disk is seen to be connected the last time
func (client *storageRESTClient) LastConn() time.Time {
	return client.restClient.LastConn()
}

		return
	}

	writeSuccessResponseJSON(w, rptData)
}

// ReplicationDiffHandler - POST returns info on unreplicated versions for a remote target ARN
// to the connected HTTP client.
func (a adminAPIHandlers) ReplicationDiffHandler(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	vars := mux.Vars(r)
	bucket := vars["bucket"]

```

#### 3.2 Public Prometheus config

If Prometheus endpoint authentication type is set to `public`. Following prometheus config is sufficient to start scraping metrics data from MinIO.
This can be collected from any server once per collection.

##### Cluster

```yaml
scrape_configs:
- job_name: minio-job
  metrics_path: /minio/v2/metrics/cluster
  scheme: http
  static_configs:

		}
		parentUserToCredsMap[cred.ParentUser] = append(parentUserToCredsMap[cred.ParentUser], cred)

	}

	// 2. Query LDAP server for groups of the LDAP users collected.
	updatedGroups, err := sys.LDAPConfig.LookupGroupMemberships(parentUsers, parentUserToLDAPUsernameMap)
	if err != nil {
		// Log and return on error - perhaps it'll work the next time.
		iamLogIf(GlobalContext, err)

	// of this function is to know if the "drive" has "format.json" or not
	// if it has a "format.json" then is it correct "format.json" or not.
	IsOnline() bool

	// Returns the last time this disk (re)-connected
	LastConn() time.Time

	// Indicates if disk is local or not.
	IsLocal() bool

	// Returns hostname if disk is remote.
	Hostname() string

	// Returns the entire endpoint.
	Endpoint() Endpoint