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add example to generate dm key #19306

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Nov 6, 2024
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add example to generate dm key #19306

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D3Hunter Nov 4, 2024
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Update dm/dm-master-configuration-file.md
D3Hunter Nov 4, 2024
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qiancai Nov 6, 2024
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Update dm-master-configuration-file.md
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2 changes: 1 addition & 1 deletion dm/dm-customized-secret-key.md
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Expand Up @@ -9,7 +9,7 @@ Before v8.0.0, [DM](/dm/dm-overview.md) uses a [fixed AES-256 secret key](https:

## Usage

1. Create a custom key file, which must contain a 64-character hexadecimal AES-256 secret key.
1. Create a custom key file, which must contain a 64-character hexadecimal AES-256 secret key. One way to generate this key is by calculating SHA256 checksum of random data, such as `head -n 256 /dev/urandom | sha256sum`.
2. In the DM-master [command-line flags](/dm/dm-command-line-flags.md) or [configuration file](/dm/dm-master-configuration-file.md), specify `secret-key-path` as the path of your custom key file.

## Upgrade from a version earlier than v8.0.0
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2 changes: 1 addition & 1 deletion dm/dm-master-configuration-file.md
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Expand Up @@ -60,4 +60,4 @@ This section introduces the configuration parameters of DM-master.
| `ssl-cert` | The path of the file that contains X509 certificate in PEM format for DM-master to connect with other components. |
| `ssl-key` | The path of the file that contains X509 key in PEM format for DM-master to connect with other components. |
| `cert-allowed-cn` | Common Name list. |
| `secret-key-path` | The file path of the secret key, which is used to encrypt and decrypt upstream and downstream passwords. The file must contain a 64-character hexadecimal AES-256 secret key. |
| `secret-key-path` | The file path of the secret key, which is used to encrypt and decrypt upstream and downstream passwords. The file must contain a 64-character hexadecimal AES-256 secret key. One way to generate this key is by calculating SHA256 checksum of random data, such as <code>head -n 256 /dev/urandom \| sha256sum</code>. For more information, see [Customize a secret key for DM encryption and decryption](dm-customized-secret-key.md). |
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