diff --git a/CountItems/CountManager.js b/CountItems/CountManager.js
index f1f17130..3871dc89 100644
--- a/CountItems/CountManager.js
+++ b/CountItems/CountManager.js
@@ -2,6 +2,7 @@ const async = require('async');
 const { once } = require('arsenal').jsutil;
 const { validStorageMetricLevels } = require('./utils/constants');
 const { consolidateDataMetrics } = require('./utils/utils');
+const monitoring = require('../utils/monitoring');
 
 class CountManager {
     constructor(params) {
@@ -35,6 +36,7 @@ class CountManager {
                 return done(new Error('emptyWorkerList'));
             }
             const id = this.workerList.shift();
+            const processingStartTime = process.hrtime.bigint();
             return this.workers[id].count(bucketInfo, (err, res) => {
                 this.log.info('processing a bucket', {
                     method: 'CountManager::_setupQueue',
@@ -44,6 +46,8 @@ class CountManager {
                 if (err) {
                     return done(err);
                 }
+                const processingDuration = Number(process.hrtime.bigint() - processingStartTime) / 1e9;
+                monitoring.bucketProcessingDuration.observe(processingDuration);
                 this._consolidateData(res);
                 this.workerList.push(id);
                 return done();
@@ -53,6 +57,7 @@ class CountManager {
     }
 
     _consolidateData(results) {
+        const startTime = process.hrtime.bigint();
         if (!results) {
             return;
         }
@@ -111,6 +116,8 @@ class CountManager {
         } else {
             this.dataMetrics = results.dataMetrics;
         }
+        const consolidationDurationInS = Number(process.hrtime.bigint() - startTime) / 1e9;
+        monitoring.consolidationDuration.observe(consolidationDurationInS);
     }
 
     setup(callback) {
diff --git a/CountItems/CountMaster.js b/CountItems/CountMaster.js
index 2ccefbe0..875a5832 100644
--- a/CountItems/CountMaster.js
+++ b/CountItems/CountMaster.js
@@ -58,7 +58,7 @@ class CountMaster {
                 });
                 return this.stop(null, () => callback(err));
             }
-            return this.stop(null, () => callback());
+            return callback();
         });
     }
 }
diff --git a/CountItems/CountWorker.js b/CountItems/CountWorker.js
index 41fc9ec0..b3093ff4 100644
--- a/CountItems/CountWorker.js
+++ b/CountItems/CountWorker.js
@@ -1,6 +1,7 @@
 const assert = require('assert');
 const async = require('async');
 const { BucketInfo } = require('arsenal').models;
+const monitoring = require('../utils/monitoring');
 
 class CountWorker {
     constructor(params) {
@@ -35,7 +36,10 @@ class CountWorker {
         return async.waterfall([
             next => this.client._getIsTransient(bucketInfo, this.log, next),
             (isTransient, next) => this.client.getObjectMDStats(bucketName, bucketInfo, isTransient, this.log, next),
-        ], callback);
+        ], (err, results) => {
+            monitoring.bucketsCount.inc({ status: err ? 'error' : 'success' });
+            callback(err, results);
+        });
     }
 
     clientTeardown(callback) {
diff --git a/CountItems/masterProcess.js b/CountItems/masterProcess.js
index 35888508..0c9f824d 100644
--- a/CountItems/masterProcess.js
+++ b/CountItems/masterProcess.js
@@ -1,4 +1,5 @@
 const werelogs = require('werelogs');
+const { network } = require('arsenal');
 const { reshapeExceptionError } = require('arsenal').errorUtils;
 const S3UtilsMongoClient = require('../utils/S3UtilsMongoClient');
 
@@ -7,6 +8,9 @@ const CountManager = require('./CountManager');
 const createMongoParams = require('../utils/createMongoParams');
 const createWorkers = require('./utils/createWorkers');
 
+const WebServer = network.http.server;
+const monitoring = require('../utils/monitoring');
+
 const logLevel = Number.parseInt(process.env.DEBUG, 10) === 1
     ? 'debug' : 'info';
 
@@ -15,9 +19,20 @@ const loggerConfig = {
     dump: 'error',
 };
 
+let waitingForPromScraping = false;
+
 werelogs.configure(loggerConfig);
 const log = new werelogs.Logger('S3Utils::CountItems::Master');
 
+function tryParseInt(s, defaultValue) {
+    const v = Number.parseInt(s, 10);
+    return v > 0 ? v : defaultValue;
+}
+
+const prometheusPollingPeriod = tryParseInt(process.env.PROMETHEUS_POLLING_PERIOD, 30);
+
+const prometheusPollingAttempts = tryParseInt(process.env.PROMETHEUS_POLLING_ATTEMPTS, 5);
+
 const numWorkers = process.env.NUM_WORKERS && !Number.isNaN(process.env.NUM_WORKERS)
     ? Number.parseInt(process.env.NUM_WORKERS, 10)
     : 4;
@@ -37,6 +52,17 @@ const countMaster = new CountMaster({
     client: new S3UtilsMongoClient(createMongoParams(log)),
 });
 
+const metricServer = new WebServer(8003, log).onRequest((req, res) => monitoring.metricsHandler(
+    () => {
+        if (waitingForPromScraping === true) {
+            countMaster.stop(null, () => process.exit(1));
+        }
+    },
+    req,
+    res,
+));
+metricServer.start();
+
 const handleSignal = sig => countMaster.stop(sig, () => process.exit(0));
 process.on('SIGINT', handleSignal);
 process.on('SIGHUP', handleSignal);
@@ -53,5 +79,8 @@ countMaster.start(err => {
     if (err) {
         process.exit(1);
     }
-    process.exit(0);
+    waitingForPromScraping = true;
+    setTimeout(() => {
+        countMaster.stop(null, () => process.exit(0));
+    }, prometheusPollingAttempts * prometheusPollingPeriod * 1000 * 4);
 });
diff --git a/package.json b/package.json
index 908064a6..5e92136b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "s3utils",
-  "version": "1.14.6",
+  "version": "1.14.7",
   "engines": {
     "node": ">= 16"
   },
@@ -57,6 +57,7 @@
     "eslint-plugin-import": "^2.20.1",
     "eslint-plugin-jest": "^23.6.0",
     "jest": "^23.6.0",
-    "mongodb-memory-server": "^8.10.2"
+    "mongodb-memory-server": "^8.10.2",
+    "sinon": "^17.0.1"
   }
 }
diff --git a/tests/functional/countItems.js b/tests/functional/countItems.js
index cbb01726..81c0d6e9 100644
--- a/tests/functional/countItems.js
+++ b/tests/functional/countItems.js
@@ -3,8 +3,8 @@ const async = require('async');
 const werelogs = require('werelogs');
 const { BucketInfo, ObjectMD } = require('arsenal').models;
 const { constants } = require('arsenal');
+const sinon = require('sinon');
 const S3UtilsMongoClient = require('../../utils/S3UtilsMongoClient');
-
 const CountMaster = require('../../CountItems/CountMaster');
 const CountManager = require('../../CountItems/CountManager');
 const createMongoParams = require('../../utils/createMongoParams');
@@ -190,6 +190,7 @@ jest.setTimeout(120000);
 describe('CountItems', () => {
     const oldEnv = process.env;
     let client;
+    let setTimeoutSpy;
 
     beforeAll(done => {
         process.env = oldEnv;
@@ -209,9 +210,12 @@ describe('CountItems', () => {
             next => client.setup(next),
             next => populateMongo(client, next),
         ], done);
+        setTimeoutSpy = jest.spyOn(global, 'setTimeout');
+        setTimeoutSpy.mockImplementation((callback, delay) => callback());
     });
 
     afterAll(done => {
+        setTimeoutSpy.mockRestore();
         async.series([
             next => client.db.dropDatabase().then(() => next()).catch(() => next()),
             next => client.close(next),
diff --git a/utils/S3UtilsMongoClient.js b/utils/S3UtilsMongoClient.js
index 6d669aa7..ab7b3689 100644
--- a/utils/S3UtilsMongoClient.js
+++ b/utils/S3UtilsMongoClient.js
@@ -5,6 +5,7 @@ const { errors, constants } = require('arsenal');
 const async = require('async');
 const { validStorageMetricLevels } = require('../CountItems/utils/constants');
 const getLocationConfig = require('./locationConfig');
+const monitoring = require('./monitoring');
 
 const METASTORE = '__metastore';
 const INFOSTORE = '__infostore';
@@ -150,6 +151,7 @@ class S3UtilsMongoClient extends MongoClientInterface {
                             entry: res,
                             error,
                         });
+                        monitoring.objectsCount.inc({ status: 'error' });
                         return;
                     }
 
@@ -159,6 +161,7 @@ class S3UtilsMongoClient extends MongoClientInterface {
                             method: 'getObjectMDStats',
                             entry: res,
                         });
+                        monitoring.objectsCount.inc({ status: 'skipped' });
                         return;
                     }
 
@@ -231,6 +234,7 @@ class S3UtilsMongoClient extends MongoClientInterface {
                             collRes.account[account].locations[location].deleteMarkerCount += res.value.isDeleteMarker ? 1 : 0;
                         });
                     });
+                    monitoring.objectsCount.inc({ status: 'success' });
                     processed++;
                 },
                 err => {
diff --git a/utils/monitoring.js b/utils/monitoring.js
new file mode 100644
index 00000000..be086635
--- /dev/null
+++ b/utils/monitoring.js
@@ -0,0 +1,88 @@
+const { errors } = require('arsenal');
+const promClient = require('prom-client');
+const { Registry } = require('prom-client');
+const { http } = require('httpagent');
+const CountMaster = require('../CountItems/CountMaster');
+
+const aggregatorRegistry = new promClient.AggregatorRegistry();
+const { collectDefaultMetrics } = promClient;
+
+
+// Histogram of the bucket processing duration, by the utilization service.
+const bucketProcessingDuration = new promClient.Histogram({
+    name: 's3_countitems_bucket_listing_duration_seconds',
+    help: 'Bucket processing duration',
+    buckets: [1, 10, 60, 600, 3600, 18000, 36000],
+});
+
+const consolidationDuration = new promClient.Histogram({
+    name: 's3_countitems_bucket_merge_duration_seconds',
+    help: 'Duration of metrics consolidation in seconds',
+    buckets: [0.01, 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10],
+});
+
+const bucketsCount = new promClient.Counter({
+    name: 's3_countitems_total_buckets_count',
+    help: 'Total number of buckets processed',
+    labelNames: ['status'],
+});
+
+const objectsCount = new promClient.Counter({
+    name: 's3_countitems_total_objects_count',
+    help: 'Total number of objects processed',
+    labelNames: ['status'],
+});
+
+/**
+ * @param {http.ServerResponse} res - http response object
+ * @param {Error | errors.ArsenalError} error - Error
+ * @return {void}
+ */
+function _writeResponse(res, error) {
+    let statusCode = 500;
+    if (error instanceof errors.ArsenalError && Number.isInteger(error.code)) {
+        statusCode = error.code;
+    }
+    res.writeHead(statusCode, { 'Content-Type': 'application/json' });
+    res.end();
+}
+
+/**
+ * @param {function} onScraped - callback to call when metrics are scraped
+ * @param {http.IncomingMessage} req - http request object
+ * @param {http.ServerResponse} res - http response object
+ * @return {void}
+ */
+async function metricsHandler(onScraped, req, res) {
+    if (req.method !== 'GET' || req.url !== '/metrics') {
+        return _writeResponse(res, errors.MethodNotAllowed);
+    }
+    try {
+        const [registerMetrics, clusterMetrics] = await Promise.all([
+            promClient.register.metrics(),
+            aggregatorRegistry.clusterMetrics(),
+        ]);
+        const promMetrics = `${registerMetrics}\n${clusterMetrics}`;
+        const contentLen = Buffer.byteLength(promMetrics, 'utf8');
+        return res.writeHead(200, {
+            'content-length': contentLen,
+            'content-type': promClient.register.contentType,
+        }).end(promMetrics);
+    } catch (ex) {
+        return _writeResponse(res, ex);
+    } finally {
+        if (onScraped) {
+            onScraped();
+        }
+    }
+}
+
+module.exports = {
+    client: promClient,
+    collectDefaultMetrics,
+    metricsHandler,
+    bucketProcessingDuration,
+    consolidationDuration,
+    bucketsCount,
+    objectsCount,
+};
diff --git a/yarn.lock b/yarn.lock
index bfd9536c..eb0bc56b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1037,6 +1037,27 @@
   dependencies:
     type-detect "4.0.8"
 
+"@sinonjs/commons@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-2.0.0.tgz#fd4ca5b063554307e8327b4564bd56d3b73924a3"
+  integrity sha512-uLa0j859mMrg2slwQYdO/AkrOfmH+X6LTVmNTS9CqexuE2IvVORIkSpJLqePAbEnKJ77aMmCwr1NUZ57120Xcg==
+  dependencies:
+    type-detect "4.0.8"
+
+"@sinonjs/commons@^3.0.0":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-3.0.1.tgz#1029357e44ca901a615585f6d27738dbc89084cd"
+  integrity sha512-K3mCHKQ9sVh8o1C9cxkwxaOmXoAMlDxC1mYyHrjqOWEcBjYr76t96zL2zlj5dUGZ3HSw240X1qgH3Mjf1yJWpQ==
+  dependencies:
+    type-detect "4.0.8"
+
+"@sinonjs/fake-timers@^11.2.2":
+  version "11.2.2"
+  resolved "https://registry.yarnpkg.com/@sinonjs/fake-timers/-/fake-timers-11.2.2.tgz#50063cc3574f4a27bd8453180a04171c85cc9699"
+  integrity sha512-G2piCSxQ7oWOxwGSAyFHfPIsyeJGXYtc6mFbnFA+kRXkiEnTl8c/8jul2S329iFBnDI9HGoeWWAZvuvOkZccgw==
+  dependencies:
+    "@sinonjs/commons" "^3.0.0"
+
 "@sinonjs/fake-timers@^9.1.2":
   version "9.1.2"
   resolved "https://registry.yarnpkg.com/@sinonjs/fake-timers/-/fake-timers-9.1.2.tgz#4eaab737fab77332ab132d396a3c0d364bd0ea8c"
@@ -1044,6 +1065,20 @@
   dependencies:
     "@sinonjs/commons" "^1.7.0"
 
+"@sinonjs/samsam@^8.0.0":
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-8.0.0.tgz#0d488c91efb3fa1442e26abea81759dfc8b5ac60"
+  integrity sha512-Bp8KUVlLp8ibJZrnvq2foVhP0IVX2CIprMJPK0vqGqgrDa0OHVKeZyBykqskkrdxV6yKBPmGasO8LVjAKR3Gew==
+  dependencies:
+    "@sinonjs/commons" "^2.0.0"
+    lodash.get "^4.4.2"
+    type-detect "^4.0.8"
+
+"@sinonjs/text-encoding@^0.7.2":
+  version "0.7.2"
+  resolved "https://registry.yarnpkg.com/@sinonjs/text-encoding/-/text-encoding-0.7.2.tgz#5981a8db18b56ba38ef0efb7d995b12aa7b51918"
+  integrity sha512-sXXKG+uL9IrKqViTtao2Ws6dy0znu9sOaP1di/jKGW1M6VssO8vlpXCQcpZ+jisQ1tTFAC5Jo/EOzFbggBagFQ==
+
 "@socket.io/component-emitter@~3.1.0":
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/@socket.io/component-emitter/-/component-emitter-3.1.0.tgz#96116f2a912e0c02817345b3c10751069920d553"
@@ -2745,6 +2780,11 @@ diff@^3.2.0:
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
   integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
 
+diff@^5.1.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-5.2.0.tgz#26ded047cd1179b78b9537d5ef725503ce1ae531"
+  integrity sha512-uIFDxqpRZGZ6ThOk84hEfqWoHx2devRFvpTZcTHur85vImfaxUbTW9Ryh4CpCuDnToOP1CEtXKIgytHBPVff5A==
+
 diskusage@^1.1.1:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/diskusage/-/diskusage-1.1.3.tgz#680d7dbf1b679168a195c9240eb3552cbd2c067b"
@@ -5209,6 +5249,11 @@ jsprim@1.4.2, jsprim@^1.2.2:
     json-schema "0.4.0"
     verror "1.10.0"
 
+just-extend@^6.2.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-6.2.0.tgz#b816abfb3d67ee860482e7401564672558163947"
+  integrity sha512-cYofQu2Xpom82S6qD778jBDpwvvy39s1l/hrYij2u9AMdQcGRpaBu6kY4mVhuno5kJVi1DAz4aiphA2WI1/OAw==
+
 jwa@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/jwa/-/jwa-1.4.1.tgz#743c32985cb9e98655530d53641b66c8645b039a"
@@ -5552,6 +5597,11 @@ lodash.flatten@^4.4.0:
   resolved "https://registry.yarnpkg.com/lodash.flatten/-/lodash.flatten-4.4.0.tgz#f31c22225a9632d2bbf8e4addbef240aa765a61f"
   integrity sha1-8xwiIlqWMtK7+OSt2+8kCqdlph8=
 
+lodash.get@^4.4.2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
+  integrity sha512-z+Uw/vLuy6gQe8cfaFWD7p0wVv8fJl3mbzXh33RS+0oW2wvUqiRXiQ69gLWSLpgB5/6sU+r6BlQR0MBILadqTQ==
+
 lodash.includes@^4.3.0:
   version "4.3.0"
   resolved "https://registry.yarnpkg.com/lodash.includes/-/lodash.includes-4.3.0.tgz#60bb98a87cb923c68ca1e51325483314849f553f"
@@ -6195,6 +6245,17 @@ new-find-package-json@^2.0.0:
   dependencies:
     debug "^4.3.4"
 
+nise@^5.1.5:
+  version "5.1.9"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-5.1.9.tgz#0cb73b5e4499d738231a473cd89bd8afbb618139"
+  integrity sha512-qOnoujW4SV6e40dYxJOb3uvuoPHtmLzIk4TFo+j0jPJoC+5Z9xja5qH5JZobEPsa8+YYphMrOSwnrshEhG2qww==
+  dependencies:
+    "@sinonjs/commons" "^3.0.0"
+    "@sinonjs/fake-timers" "^11.2.2"
+    "@sinonjs/text-encoding" "^0.7.2"
+    just-extend "^6.2.0"
+    path-to-regexp "^6.2.1"
+
 node-fetch@^2.6.7:
   version "2.6.7"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.7.tgz#24de9fba827e3b4ae44dc8b20256a379160052ad"
@@ -6705,6 +6766,11 @@ path-to-regexp@0.1.7:
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
   integrity sha512-5DFkuoqlv1uYQKxy8omFBeJPQcdoE07Kv2sferDCrAq1ohOU+MSDswDIbnx3YAM60qIOnYa53wBhXW0EbMonrQ==
 
+path-to-regexp@^6.2.1:
+  version "6.2.2"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-6.2.2.tgz#324377a83e5049cbecadc5554d6a63a9a4866b36"
+  integrity sha512-GQX3SSMokngb36+whdpRXE+3f9V8UzyAorlYvOGx87ufGHehNTn5lCxrKtLyZ4Yl/wEKnNnr98ZzOwwDZV5ogw==
+
 path-type@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-1.1.0.tgz#59c44f7ee491da704da415da5a4070ba4f8fe441"
@@ -7514,6 +7580,18 @@ simple-glob@^0.2.0:
     lodash.flatten "^4.4.0"
     lodash.union "^4.6.0"
 
+sinon@^17.0.1:
+  version "17.0.1"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-17.0.1.tgz#26b8ef719261bf8df43f925924cccc96748e407a"
+  integrity sha512-wmwE19Lie0MLT+ZYNpDymasPHUKTaZHUH/pKEubRXIzySv9Atnlw+BUMGCzWgV7b7wO+Hw6f1TEOr0IUnmU8/g==
+  dependencies:
+    "@sinonjs/commons" "^3.0.0"
+    "@sinonjs/fake-timers" "^11.2.2"
+    "@sinonjs/samsam" "^8.0.0"
+    diff "^5.1.0"
+    nise "^5.1.5"
+    supports-color "^7.2.0"
+
 sisteransi@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/sisteransi/-/sisteransi-0.1.1.tgz#5431447d5f7d1675aac667ccd0b865a4994cb3ce"
@@ -7983,7 +8061,7 @@ supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
-supports-color@^7.1.0:
+supports-color@^7.1.0, supports-color@^7.2.0:
   version "7.2.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
   integrity sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==
@@ -8241,7 +8319,7 @@ type-check@~0.3.2:
   dependencies:
     prelude-ls "~1.1.2"
 
-type-detect@4.0.8:
+type-detect@4.0.8, type-detect@^4.0.8:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
   integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==