# MinIO Monitoring Guide

MinIO server exposes monitoring data over endpoints. Monitoring tools can pick the data from these endpoints. This document lists the monitoring endpoints and relevant documentation.

## Healthcheck Probe

MinIO server has two healthcheck related un-authenticated endpoints, a liveness probe to indicate if server is responding, cluster probe to check if server can be taken down for maintenance.

    nextInBucketKToV = createFilledWithAbsent(expectedSize);
    nextInBucketVToK = createFilledWithAbsent(expectedSize);

    firstInInsertionOrder = ENDPOINT;
    lastInInsertionOrder = ENDPOINT;

    prevInInsertionOrder = createFilledWithAbsent(expectedSize);
    nextInInsertionOrder = createFilledWithAbsent(expectedSize);
  }

    // DiSNI components - these would be actual DiSNI objects in a real implementation
    private Object endpointGroup; // RdmaActiveEndpointGroup<DisniRdmaEndpoint>
    private Object endpoint; // RdmaActiveEndpoint
    private boolean initialized = false;

    @Override
    public boolean isAvailable() {
        try {
            // Check if DiSNI is available on the classpath

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "sum by (endpoint,server) (minio_cluster_replication_sent_bytes{job=\"$scrape_jobs\"})",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{endpoint}},{{server}}",
          "refId": "A"
        }
      ],
      "title": "Sent Data",
      "type": "timeseries"
    },

            final String endpoint = System.getenv().get("STORAGE_ENDPOINT");
            final String accessKey = System.getenv().get("STORAGE_ACCESS_KEY");
            final String secretKey = System.getenv().get("STORAGE_SECRET_KEY");
            final String region = System.getenv().get("STORAGE_SECRET_KEY");
            try {
                if (StringUtil.isBlank(endpoint)) {

import (
	"context"
	"flag"
	"fmt"
	"io"
	"log"
	"net/url"
	"os"
	"time"

	"github.com/minio/minio-go/v7"
	cr "github.com/minio/minio-go/v7/pkg/credentials"
)

var (
	// LDAP integrated Minio endpoint
	stsEndpoint string

	// LDAP credentials
	ldapUsername string
	ldapPassword string

	// Display credentials flag
	displayCreds bool

	// Credential expiry duration
	expiryDuration time.Duration

  @Test
  fun testOkHttpDirect() {
    testRequest {
      val client = OkHttpClient()

      val response =
        client
          .newCall(
            Request((mockServer.endpoint + "/person?name=peter").toHttpUrl()),
          ).execute()

      assertThat(response.body.string()).contains("Peter the person")
      assertThat(response.protocol).isEqualTo(Protocol.HTTP_1_1)
    }
  }

	byHostName := globalMinioAddr
	if len(opts.hosts) > 0 {
		server := getLocalServerProperty(globalEndpoints, &http.Request{
			Host: globalLocalNodeName,
		}, false)
		if _, ok := opts.hosts[server.Endpoint]; ok {
			byHostName = server.Endpoint
		} else {
			return
		}
	}

	if strings.HasPrefix(byHostName, ":") && !strings.HasPrefix(globalLocalNodeName, ":") {
		byHostName = globalLocalNodeName
	}

    /**
     * Sends a request to the remote endpoint.
     *
     * @param request the request to send
     * @throws IOException if an I/O error occurs
     */
    protected abstract void doSend(Request request) throws IOException;

    /**
     * Receives a response from the remote endpoint.
     *
     * @param response the response object to populate

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "sum by (server, endpoint) (minio_node_replication_average_link_latency_ms{job=\"$scrape_jobs\"})",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{server,endpoint}}",
          "refId": "A"
        }
      ],
      "title": "Avg. Link Latency (millis)",
      "type": "timeseries"