:original_name: cce_01_0277.html

.. _cce_01_0277:

Overview
========

CCE provides multiple types of add-ons to extend cluster functions and meet feature requirements. You can install add-ons as required.

.. table:: **Table 1** Add-on list

   +-------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | Add-on Name                         | Introduction                                                                                                                                                                     |
   +=====================================+==================================================================================================================================================================================+
   | :ref:`coredns <cce_01_0129>`        | The coredns add-on is a DNS server that provides domain name resolution services for Kubernetes clusters. coredns chains plug-ins to provide additional features.                |
   +-------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`storage-driver <cce_01_0127>` | storage-driver is a FlexVolume driver used to support IaaS storage services such as EVS, SFS, and OBS.                                                                           |
   +-------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`everest <cce_01_0066>`        | Everest is a cloud native container storage system. Based on CSI, clusters of Kubernetes v1.15.6 and later can connect to storage services such as EVS, OBS, SFS, and SFS Turbo. |
   +-------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`autoscaler <cce_01_0154>`     | The autoscaler add-on resizes a cluster based on pod scheduling status and resource usage.                                                                                       |
   +-------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`metrics-server <cce_01_0205>` | metrics-server is an aggregator for monitoring data of core cluster resources.                                                                                                   |
   +-------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`gpu-beta <cce_01_0141>`       | gpu-beta is a device management add-on that supports GPUs in containers. It supports only NVIDIA drivers.                                                                        |
   +-------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+