About Grafana Mimir tenant IDs

Within a Grafana Mimir cluster, the tenant ID is the unique identifier of a tenant. For information about how Grafana Mimir components use tenant IDs, refer to Authentication and authorization.

Restrictions

Tenant IDs must be less-than or equal-to 150 bytes or characters in length and can only include the following supported characters:

Alphanumeric characters
- 0-9
- a-z
- A-Z
Special characters
- Exclamation point (!)
- Hyphen (-)
- Underscore (_)
- Single period (.)
- Asterisk (*)
- Single quote (')
- Open parenthesis (()
- Close parenthesis ())

Note: For security reasons, . and .. are not valid tenant IDs. Note: The tenant ID __mimir_cluster is unsupported because its name is used internally by Mimir.

All other characters, including slashes and whitespace, are not supported.