> AI agents: this is one page from PostHog's docs. Full index of Markdown docs for LLMs: https://posthog.com/llms.txt

# Linking Redshift as a source

Canonical URL: https://posthog.com/docs/data-pipelines/sources/redshift

> **Cloud region:** This page uses US Cloud hosts. For an EU Cloud project, use `https://eu.posthog.com` instead of `https://app.posthog.com` (app host for links).

![](https://res.cloudinary.com/dmukukwp6/image/upload/texture_tan_9608fcca70)

![](https://res.cloudinary.com/dmukukwp6/image/upload/texture_tan_dark_a92b0e022d)

Let AI connect your sources for you

Skip the manual setup — run this in your project and the wizard auto-detects your databases and APIs and connects them to PostHog.

`npx @posthog/wizard warehouse`

![PostHog Wizard hedgehog](https://res.cloudinary.com/dmukukwp6/image/upload/wizard_3f8bb7a240.png)

![](https://res.cloudinary.com/dmukukwp6/image/upload/wizard_3f8bb7a240.png)Let AI connect your sources for you

The Redshift connector can link your database tables to PostHog.

To link Redshift:

1.  Go to the [Data pipeline page](https://app.posthog.com/data-management/sources) and the sources tab in PostHog
2.  Click **New source** and select Redshift
3.  Enter your database connection details:
    -   **Host:** The hostname or IP of your Redshift cluster like `my-cluster.abc123.us-east-1.redshift.amazonaws.com`.
    -   **Port:** The port your Redshift cluster is listening on. The default is `5439`.
    -   **Database:** The name of the database you want like `analytics_db`.
    -   **User:** The username with the necessary permissions to access the database.
    -   **Password:** The password for the user.
    -   **Schema:** (Optional) The schema for your database. Leave blank to browse and sync tables from all schemas, or specify one to limit the selection. The default is `public`.
4.  Click **Next**

The data warehouse then starts syncing your Redshift data. You can see details and progress in the [sources tab](https://app.posthog.com/data-management/sources).

> **Permissions:** The Redshift source only requires read permissions on the schemas and tables you intend to sync.

## Configuration

| Option | Description |
| --- | --- |
| `Connection string (optional)` **Type:** text **Required:** False |  |
| `Host` **Type:** text **Required:** True | Must be reachable from the public internet. Add PostHog's egress IP addresses to your firewall allowlist (see the docs above) and use a public host. `localhost` and private IPs (10.x, 172.16-31.x, 192.168.x) can't be reached. For a database that can't be exposed publicly, enable the SSH tunnel below. |
| `Port` **Type:** number **Required:** True |  |
| `Database` **Type:** text **Required:** True |  |
| `User` **Type:** text **Required:** True |  |
| `Password` **Type:** password **Required:** True |  |
| `Schema` **Type:** text **Required:** False |  |
| `Use SSH tunnel?` **Type:** ssh-tunnel **Required:** False |  |

## Selecting columns

By default, PostHog syncs all columns from each table. To sync only specific columns:

1.  During source setup, click **Columns** next to any table in the table picker.
2.  Uncheck columns you don't want to sync.
3.  Primary key columns and the incremental sync field (if configured) are always synced and cannot be disabled.

You can also change column selection after setup:

1.  Go to the [sources tab](https://app.posthog.com/data-management/sources) and click your Redshift source.
2.  Click **Configure** next to any schema.
3.  Under **Columns**, select which columns to sync.

**Adding columns to existing syncs**

When you add columns to a schema using incremental or append sync, PostHog prompts you to choose:

-   **Sync forward only** - New columns are populated only for future data. Existing rows show `NULL` for the new columns.
-   **Full resync** - Triggers a complete resync to backfill the new columns for all rows.

#### Inbound IP addresses

We use a set of IP addresses to access your instance. To ensure this connector works, add these IPs to your inbound security rules:

| US | EU |
| --- | --- |
| 44.205.89.55 | 3.75.65.221 |
| 52.4.194.122 | 18.197.246.42 |
| 44.208.188.173 | 3.120.223.253 |