---
title: "Managing VAST Cluster Passwords"
slug: "managing-vast-cluster-passwords"
tags: ["5.4"]
updated: 2026-10-28T01:53:23Z
published: 2026-10-28T01:53:23Z
canonical: "docs.vastdata.com/managing-vast-cluster-passwords"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vastdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Managing VAST Cluster Passwords

- [Default Users and Passwords](/docs-5-4/docs/en/managing-vast-cluster-passwords#default-users-and-passwords)
- [Changing Default Passwords](/docs-5-4/docs/en/managing-vast-cluster-passwords#changing-default-passwords)

## Default Users and Passwords

VAST Cluster equipment is shipped with the following users and passwords.

- Default users indicated as required cannot be renamed.
- Any of the default passwords can be [changed](/docs-5-4/docs/en/managing-vast-cluster-passwords#changing-default-passwords).

| Component | Interface and User Role | Username | Password | Is a required user account? |
| --- | --- | --- | --- | --- |
| VAST Management System (VMS) | VMS administrator | `admin` | `123456` | Yes |
| VMS support user | `support` | `654321` | No |
| VMS root user | `root` | `IamGroot!` | Yes |
| CNode | VAST OS (Linux) user | `vastdata` | `vastdata` | Yes |
| VAST OS (Linux) super user | `root` | `rootvastdata` | Yes |
| IPMI user | `admin` | Ice Lake model: `adminvastdata` Cascade Lake model: `123456` Broadwell model: `admin` | Yes |
| DNode | VAST OS (Linux) user | `vastdata` | `vastdata` | Yes |
| VAST OS (Linux) super user | `root` | `rootvastdata` | Yes |
| IPMI user | `admin` | Mavericks model: `admin` CERES model: `adminvastdata` | Yes |
| NVIDIA Onyx Ethernet switches | Management interface administrator | `admin` | `admin` | Yes |
| Management interface read-only user | `monitor` | N/A | No |
| NVIDIA Cumulus switches | Default user account | `cumulus` | - Before version 5.9.1: `CumulusLinux!` - Version 5.9.1 to 5.11.0: `Cumu1usLinux!` - From version 5.11.1: `Vastdata1!` > [!NOTE] > **Note** > > Cumulus switches shipped directly from NVIDIA have a default password `cumulus`. | No |
| Arista switches | Default admin user account | `admin` | `admin` | No |

## Changing Default Passwords

- To change VMS passwords or to enable and configure VMS authentication and RBAC via Active Directory/LDAP user, see [Managing Managers](/docs-5-4/docs/managing-managers). Managing Managers

> [!WARNING]
> **Warning**
> 
> Do not remove, rename or disable VMS users with required user accounts (indicated as such in the table above).
- To change CNode and DNode OS and IPMI passwords, run the VAST CLI command [cluster set-password](/docs-5-4/docs/en/cluster-set-password).
- To change switch passwords, consult switch vendor documentation.