. . .
```

Refer [Prometheus documentation](https://prometheus.io/docs/introduction/first_steps/) for more details.

### 2. Configure authentication type for Prometheus metrics

MinIO supports two authentication modes for Prometheus either `jwt` or `public`, by default MinIO runs in `jwt` mode. To allow public access without authentication for prometheus metrics set environment as follows.

```
export MINIO_PROMETHEUS_AUTH_TYPE="public"

	UpdatedAt time.Time
}

func (l *lastDayTierStats) addStats(ts tierStats) {
	now := time.Now()
	l.forwardTo(now)

	nowIdx := now.Hour()
	l.Bins[nowIdx] = l.Bins[nowIdx].add(ts)
}

// forwardTo moves time to t, clearing entries between last update and t.
func (l *lastDayTierStats) forwardTo(t time.Time) {
	if t.IsZero() {
		t = time.Now()
	}

	since := t.Sub(l.UpdatedAt).Hours()

				errs[idx] = err
			}
		}(idx, pool)
	}
	wg.Wait()
	for _, err := range errs {
		return err
	}
	return nil
}

// DecomTieredObject - moves tiered object to another pool during decommissioning.
func (z *erasureServerPools) DecomTieredObject(ctx context.Context, bucket, object string, fi FileInfo, opts ObjectOptions) error {
	object = encodeDirObject(object)

		return err
	}
	x.ClientConversation = x.Client.NewConversation()
	return nil
}

// Step takes a string provided from a server (or just an empty string for the
// very first conversation step) and attempts to move the authentication
// conversation forward.  It returns a string to be sent to the server or an
// error if the server message is invalid.  Calling Step after a conversation
// completes is also an error.

      granted to You under this License for that Work shall terminate
      as of the date such litigation is filed.

   4. Redistribution. You may reproduce and distribute copies of the
      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

	// red banner along with the error message. Since the error
	// message itself contains some colored text, we needed
	// to use some ANSI control escapes to cursor color state
	// and freely move in the screen.
	for _, line := range strings.Split(errMsg, "\n") {
		if len(line) == 0 {
			// No more text to print, just quit.
			break
		}

		for {
			// Save the attributes of the current cursor helps

							NoDecryption: true,
							NoLock:       true,
							NoAuditLog:   true,
						})
					if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
						// object deleted by the application, nothing to do here we move on.
						ignore = true
						stopFn(nil)
						break
					}
					if err != nil {
						failure = true
						rebalanceLogIf(ctx, err)
						stopFn(err)
						continue
					}

		})
	}
	_, err = er.CompleteMultipartUpload(ctx, bucket, object, res.UploadID, uploadedParts, ObjectOptions{
		MTime: oi.ModTime,
	})
	return setRestoreHeaderFn(oi, err)
}

// DecomTieredObject - moves tiered object to another pool during decommissioning.
func (er erasureObjects) DecomTieredObject(ctx context.Context, bucket, object string, fi FileInfo, opts ObjectOptions) error {
	if opts.UserDefined == nil {

	objectName2 := "testObject2"
	// Unlike the actual PUT object request, the request to Copy Object doesn't contain request body,
	// empty body with the "X-Amz-Copy-Source" header pointing to the object to copies it in the backend.
	request, err = newTestRequest(http.MethodPut, getPutObjectURL(s.endPoint, bucketName, objectName2), 0, nil)
	c.Assert(err, nil)

	Rotational bool
	Metrics    DiskMetrics
	Error      string // carries the error over the network
}

// DiskMetrics has the information about XL Storage APIs
// the number of calls of each API and the moving average of
// the duration of each API.
type DiskMetrics struct {
	LastMinute              map[string]AccElem `json:"apiLatencies,omitempty"`
	APICalls                map[string]uint64  `json:"apiCalls,omitempty"`