Overview

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

**Table 1** Add-on list
Add-on Name	Introduction
`coredns (System Resource Add-On, Mandatory) <cce_10_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.
`storage-driver (System Resource Add-On, Discarded) <cce_10_0127>`	storage-driver is a FlexVolume driver used to support IaaS storage services such as EVS, SFS, and OBS.
`everest (System Resource Add-On, Mandatory) <cce_10_0066>`	Everest is a cloud native container storage system. Based on the Container Storage Interface (CSI), clusters of Kubernetes v1.15.6 or later obtain access to cloud storage services.
`autoscaler <cce_10_0154>`	The autoscaler add-on resizes a cluster based on pod scheduling status and resource usage.
`metrics-server <cce_10_0205>`	metrics-server is an aggregator for monitoring data of core cluster resources.
`gpu-beta <cce_10_0141>`	gpu-beta is a device management add-on that supports GPUs in containers. It supports only NVIDIA drivers.