---
title: Upgrading etcd clusters and applications
---

This section contains documents specific to upgrading etcd clusters and applications.

## Moving from etcd API v2 to API v3

* [Migrate applications from using API v2 to API v3][migrate-apps]

## Upgrading an etcd v3.x cluster
* [Upgrade etcd from 3.0 to 3.1][upgrade-3-1]
* [Upgrade etcd from 3.1 to 3.2][upgrade-3-2]
* [Upgrade etcd from 3.2 to 3.3][upgrade-3-3]
* [Upgrade etcd from 3.3 to 3.4][upgrade-3-4]

## Upgrading from etcd v2.3
* [Upgrade a v2.3 cluster to v3.0][upgrade-cluster]


[migrate-apps]: ../op-guide/v2-migration.md
[upgrade-cluster]: upgrade_3_0.md
[upgrade-3-1]: upgrade_3_1.md
[upgrade-3-2]: upgrade_3_2.md
[upgrade-3-3]: upgrade_3_3.md
[upgrade-3-4]: upgrade_3_4.md