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

# MOLT Fetch Installation

export const InternalLink = ({version, path = "", children, ...props}) => {
  let detectedVersion = version || "stable";
  if (typeof window !== 'undefined' && !version) {
    const match = window.location.pathname.match(/\/docs\/([^/]+)/);
    if (match) {
      detectedVersion = match[1];
    }
  }
  const normalizedPath = path.startsWith("/") ? path.slice(1) : path;
  return <a href={`/docs/${detectedVersion}/${normalizedPath}`} {...props}>
      {children}
    </a>;
};

This page explains the prerequisites for using <InternalLink path="molt-fetch">MOLT Fetch</InternalLink> and then describes how to install it.

## Supported databases

The following source databases are supported:

* PostgreSQL 11-16
* MySQL 5.7-8.4
* Oracle Database 19c (Enterprise Edition) and 21c (Express Edition)

## Installation

To install MOLT, download the binary that matches your architecture and source database:

| Operating System | Architecture | PostgreSQL/MySQL                                                                | Oracle                                                                                |
| ---------------- | ------------ | ------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------- |
| Windows          | AMD 64-bit   | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.windows-amd64.tgz) | N/A                                                                                   |
|                  | ARM 64-bit   | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.windows-arm64.tgz) | N/A                                                                                   |
| Linux            | AMD 64-bit   | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.linux-amd64.tgz)   | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.linux-amd64-oracle.tgz)  |
|                  | ARM 64-bit   | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.linux-arm64.tgz)   | N/A                                                                                   |
| Mac              | AMD 64-bit   | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.darwin-amd64.tgz)  | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.darwin-amd64-oracle.tgz) |
|                  | ARM 64-bit   | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.darwin-arm64.tgz)  | [Download](https://molt.cockroachdb.com/molt/cli/molt-latest.darwin-arm64-oracle.tgz) |

The download package includes the following:

* `molt` binary.
* `replicator` binary.
* Grafana dashboard JSON files for MOLT Fetch (`grafana_dashboard.json`) and Replicator (`replicator_grafana_dashboard.json`) metrics.  Each bundled dashboard is compatible with its corresponding binary version.
  * Oracle downloads also include the Oracle-specific Replicator dashboard (`replicator_oracle_grafana_dashboard.json`).

<Tip>
  For ease of use, keep both `molt` and `replicator` in your current working directory.
</Tip>

To display the current version of each binary, run `molt --version` and `replicator --version`.

<Note>
  `molt` is bundled with the latest `replicator` version available at the time of the MOLT release. This means that the MOLT download always contains the latest released version of <InternalLink path="molt-replicator">MOLT Replicator</InternalLink>. To verify that the `molt` and `replicator` versions match, run `molt --version` and `replicator --version`.
</Note>

For previous binaries, refer to the [MOLT version manifest](https://molt.cockroachdb.com/molt/cli/versions.html). For release details, refer to the <InternalLink version="releases" path="molt">MOLT changelog</InternalLink>.

### Docker images

#### MOLT Fetch

[Docker multi-platform images](https://hub.docker.com/r/cockroachdb/molt/tags) containing both the AMD and ARM `molt` and `replicator` binaries are available. To pull the latest image for PostgreSQL and MySQL:

```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
docker pull cockroachdb/molt
```

To pull a specific version (for example, `1.1.3`):

```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
docker pull cockroachdb/molt:1.1.3
```

To pull the latest image for Oracle (note that only `linux/amd64` is supported):

```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
docker pull cockroachdb/molt:oracle-latest
```

#### MOLT Replicator

[Docker images for MOLT Replicator](https://hub.docker.com/r/cockroachdb/replicator/tags) are also available as a standalone binary:

```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
docker pull cockroachdb/replicator
```

To pull a specific version (for example, `v1.1.1`):

```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
docker pull cockroachdb/replicator:v1.1.1
```

## See also

* <InternalLink path="molt-fetch">MOLT Fetch</InternalLink>
* <InternalLink path="molt-fetch-commands-and-flags">MOLT Fetch Commands and Flags</InternalLink>
* <InternalLink path="molt-fetch-best-practices">MOLT Fetch Best Practices</InternalLink>
* <InternalLink path="migration-overview">Migration Overview</InternalLink>