diff --git a/ch_tools/common/clickhouse/config/clickhouse_keeper.py b/ch_tools/common/clickhouse/config/clickhouse_keeper.py
index da7fcef7..080f5a0a 100644
--- a/ch_tools/common/clickhouse/config/clickhouse_keeper.py
+++ b/ch_tools/common/clickhouse/config/clickhouse_keeper.py
@@ -38,6 +38,14 @@ def port_pair(self):
 
         return int(self._keeper_server.get("tcp_port", 0)), False
 
+    @property
+    def username(self):
+        return self._keeper_server.get("username")
+
+    @property
+    def password(self):
+        return self._keeper_server.get("password")
+
     @property
     def tls_cert_path(self):
         return (
diff --git a/ch_tools/monrun_checks/ch_keeper.py b/ch_tools/monrun_checks/ch_keeper.py
index 3f45895d..068b8be0 100644
--- a/ch_tools/monrun_checks/ch_keeper.py
+++ b/ch_tools/monrun_checks/ch_keeper.py
@@ -35,18 +35,34 @@ def keeper_command(retries: int, timeout: int, no_verify_ssl_certs: bool) -> Res
     """
     Check ClickHouse Keeper is alive.
     """
-    keeper_port, use_ssl = ClickhouseKeeperConfig.load().port_pair
+    config = ClickhouseKeeperConfig.load()
+    keeper_port, use_ssl = config.port_pair
     if not keeper_port:
         return Result(OK, "Disabled")
 
-    client = KazooClient(
-        f"127.0.0.1:{keeper_port}",
-        connection_retry=retries,
-        command_retry=retries,
-        timeout=timeout,
-        use_ssl=use_ssl,
-        verify_certs=not no_verify_ssl_certs,
-    )
+    username = config.username
+    password = config.password
+    args = {
+        'hosts': f"127.0.0.1:{keeper_port}",
+        'connection_retry': retries,
+        'command_retry': retries,
+        'timeout': timeout,
+        'use_ssl': use_ssl,
+        'verify_certs': not no_verify_ssl_certs,
+    }
+
+    if username is not None and password is not None:
+        auth_data = [
+            (
+                'digest',
+                f'{username}:{password}',
+            )
+        ]
+        acls = [make_digest_acl(username, password, all=True)]
+        args['auth_data'] = auth_data
+        args['default_acl'] = acls
+
+    client = KazooClient(**args)
     try:
         client.start()
         client.get("/")
diff --git a/ch_tools/monrun_checks_keeper/keeper_commands.py b/ch_tools/monrun_checks_keeper/keeper_commands.py
index 468e2d00..270686b1 100644
--- a/ch_tools/monrun_checks_keeper/keeper_commands.py
+++ b/ch_tools/monrun_checks_keeper/keeper_commands.py
@@ -7,6 +7,7 @@
 
 from click import command, option, pass_context
 from kazoo.client import KazooClient
+from kazoo.security import make_digest_acl
 
 from ch_tools.common.clickhouse.config import ClickhouseKeeperConfig
 from ch_tools.common.result import CRIT, OK, WARNING, Result
@@ -27,14 +28,28 @@ def alive_command(ctx):
     """Check (Zoo)Keeper service is alive"""
     try:
         keeper_port, use_ssl = get_keeper_port_pair()
-        client = KazooClient(
-            f"127.0.0.1:{keeper_port}",
-            connection_retry=ctx.obj.get("retries"),
-            command_retry=ctx.obj.get("retries"),
-            timeout=ctx.obj.get("timeout"),
-            use_ssl=use_ssl,
-            verify_certs=not ctx.obj.get("no_verify_ssl_certs"),
-        )
+        username = get_keeper_username()
+        password = get_keeper_password()
+        args = {
+            'hosts': f"127.0.0.1:{keeper_port}",
+            'connection_retry': ctx.obj.get("retries"),
+            'command_retry': ctx.obj.get("retries"),
+            'timeout': ctx.obj.get("timeout"),
+            'use_ssl': use_ssl,
+            'verify_certs': not ctx.obj.get("no_verify_ssl_certs"),
+        }
+        if username is not None and password is not None:
+            auth_data = [
+                (
+                    'digest',
+                    f'{username}:{password}',
+                )
+            ]
+            acls = [make_digest_acl(username, password, all=True)]
+            args['auth_data'] = auth_data
+            args['default_acl'] = acls
+
+        client = KazooClient(**args)
         client.start()
         client.get("/")
         client.create(path="/{0}_alive".format(socket.getfqdn()), ephemeral=True)
@@ -234,6 +249,25 @@ def get_keeper_port_pair():
         return 2181, False
 
 
+def get_keeper_username():
+    """
+    :returns username for (Zoo)Keeper.
+    """
+    try:
+        return ClickhouseKeeperConfig.load().username
+    except FileNotFoundError:
+        return None, None
+
+
+def get_keeper_password():
+    """
+    :returns password for (Zoo)Keeper.
+    """
+    try:
+        return ClickhouseKeeperConfig.load().password
+    except FileNotFoundError:
+        return None, None
+
 def get_keeper_cert_path():
     """
     :returns path to Keeper TLS cert if exists.