---
title: Input Validation
sidebar:
  order: 4
---

:::danger

TrueNAS SCALE Apps are considered Deprecated. We heavily recommend using a more mature Kubernetes platform such as "TalosOS" instead, and no longer offer an apps/charts catalogue for SCALE users to install. The below docs exist purely as historical references and may be removed at any time.

:::

Validation makes sure that your input is in the desired format, so the application can parse it without problems.
Below you can find more info about which fields have the mentioned validation and what formats are accepted.

## All Apps

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## Resources and Devices

**`CPU`**
Accepted formats are:

- Plain integer (eg. `1`) - This means 1 hyperthread
- Float (eg. `0.5`) - This means half hyperthread
- Milicpu (eg. `500m`) This means also half hyperthread

Regex used to match those: `^(?!^0(\.0|m|)$)([0-9]+)(\.[0-9]|m?)$`
You can try live [here](https://regex101.com/r/WxComc/1)
More detailed info can be found [here](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#meaning-of-cpu)

**`Memory RAM`**
Accepted formats are:

- Suffixed with E, P, T, G, M, K (eg. `5G`) - This means 5Gigabyte of RAM
- Suffixed with Ei, Pi, Ti, Gi, Mi, Ki (eg. `5Gi`) - This means 5Gibibyte of RAM
- Plain integer (eg. `134217728`) - This means 128Megabyte of RAM
- As an exponent format (eg. `134e6`) This means ~128Megabyte of RAM

Regex used to match those: `^(?!^0(e[0-9]|[EPTGMK]i?|)$)([0-9]+)(|[EPTGMK]i?|e[0-9]+)$`
You can try live [here](https://regex101.com/r/LyDc6u/1)
More detailed info can be found [here](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#meaning-of-memory)

## Paths

Accepted formats are:

- Paths prefixed with `/`, without whitespace characters on begin or end of each segment (eg. `/media`, `/media/shows`, `/media/movies/`)

Accepted characters are:

- `a-z`, `A-Z`
- `0-9`
- `.`, `-`, `_`
- `" "` (Whitespace, Not on begin or end)

Regex used to match those: `^\/([a-zA-Z0-9._-]+(\s?[a-zA-Z0-9._-]+|\/?))+$`
You can try live [here](https://regex101.com/r/WjSpXg/1)

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_If you find a field that you think it needs validation, please open an issue on github_
