.. _Monitoring Clients:

Monitoring Clients
------------------

By monitoring clients, you can check the status and health of servers that you use to access virtual machines and containers. To monitor clients, use the ``vstorage -c <cluster_name> top`` command, for example:

.. image:: /images/image026.png
   :align: center
   :class: align-center

The command above shows detailed information about the ``stor1`` cluster. The monitoring parameters for clients (highlighted in red) are explained in the table below:

+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| Parameter                  | Description                                                                                                            |
+============================+========================================================================================================================+
| CLID                       | Client identifier (ID).                                                                                                |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| LEASES                     | Average number of files opened for reading/writing by the client and not yet closed, for the last 20 seconds.          |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| READ                       | Average rate, in bytes per second, at which the client reads data, for the last 20 seconds.                            |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| WRITE                      | Average rate, in bytes per second, at which the client writes data, for the last 20 seconds.                           |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| RD_OPS                     | Average number of read operations per second the client made, for the last 20 seconds.                                 |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| WR_OPS                     | Average number of write operations per second the client made, for the last 20 seconds.                                |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| FSYNCS                     | Average number of sync operations per second the client made, for the last 20 seconds.                                 |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| IOLAT                      | Average/maximum time, in milliseconds, the client needed to complete a single IO operation, for the last 20 seconds.   |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+
| HOST                       | Client hostname or IP address.                                                                                         |
+----------------------------+------------------------------------------------------------------------------------------------------------------------+