> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blnkfinance.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Backup Configuration
> Configure backup paths and S3 settings for Blnk backups.
export const CtaCallout = props => {
const {title, buttonLabel, href, trackingEvent, buttonTarget, rel = "noopener noreferrer", children} = props;
const handleCtaClick = () => {
if (typeof window === "undefined" || !trackingEvent) {
return;
}
try {
window.dispatchEvent(new CustomEvent("blnk:docs-cta", {
detail: {
name: trackingEvent,
href
}
}));
} catch {}
try {
window.posthog?.capture?.(trackingEvent, {
href
});
} catch {}
const gaPayload = {
cta_href: href
};
try {
window.gtag?.("event", trackingEvent, gaPayload);
} catch {}
try {
window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
event: trackingEvent,
...gaPayload
});
} catch {}
};
const isExternal = typeof href === "string" && (/^https?:\/\//i).test(href);
const target = buttonTarget ?? (isExternal ? "_blank" : undefined);
const linkRel = isExternal ? rel : undefined;
return ;
};
This page covers the settings Blnk uses for backup storage, including the local backup path and the credentials needed for S3-compatible object storage.
***
## Backup settings
Use these settings to choose where backup files are written and how Blnk connects to S3 or another S3-compatible service.
```bash blnk.env theme={"system"}
BLNK_BACKUP_DIR=
BLNK_AWS_ACCESS_KEY_ID=
BLNK_AWS_SECRET_ACCESS_KEY=
BLNK_S3_ENDPOINT=
BLNK_S3_BUCKET_NAME=
BLNK_S3_REGION=
```
```json blnk.json theme={"system"}
{
"backup_dir": "",
"aws_access_key_id": "",
"aws_secret_access_key": "",
"s3_endpoint": "",
"s3_bucket_name": "",
"s3_region": ""
}
```
| | Description | Default |
| :--------------------------- | :-------------------------------------------------------------------- | :------ |
| `BLNK_BACKUP_DIR` | Local directory path Blnk uses when writing backup files. | None |
| `BLNK_AWS_ACCESS_KEY_ID` | Access key ID used to authenticate with S3. | None |
| `BLNK_AWS_SECRET_ACCESS_KEY` | Secret access key used to authenticate with S3. | None |
| `BLNK_S3_ENDPOINT` | Custom S3 endpoint, usually used for S3-compatible storage providers. | None |
| `BLNK_S3_BUCKET_NAME` | Bucket name where backup files are stored. | None |
| `BLNK_S3_REGION` | Region for the S3 bucket. | None |
**Important:** Store `BLNK_AWS_ACCESS_KEY_ID` and `BLNK_AWS_SECRET_ACCESS_KEY` as secrets. Do not commit them to version control.
### `BLNK_BACKUP_DIR`
Use this to tell Blnk where backup files should be written before they are stored or uploaded.
Set a path that your Blnk process can read from and write to. If you are running Blnk in containers, make sure the directory is backed by a mounted volume instead of short-lived container storage.
## Need help?
We are very happy to help you make the most of Blnk, regardless of whether it is your first time or you are switching from another tool.
To ask questions or discuss issues, please [contact us](mailto:support@blnkfinance.com) or [join our Discord community](https://discord.gg/7WNv94zPpx).
Sign up and manage your ledger with our back-office dashboard. You can invite teammates to collaborate and manage your ledger operations directly from the dashboard.