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68 lines
4.1 KiB
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68 lines
4.1 KiB
Markdown
---
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title: Creating a Replication Rule
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weight: 25
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---
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A replication endpoint must exist before you create a replication rule. To create an endpoint, follow the instructions in [Creating Replication Endpoints](create-replication-endpoints.md).
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1. Log in to the Harbor interface with an account that has Harbor system administrator privileges.
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1. Expand **Administration**, and select **Replications**.
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1. Click **New Replication Rule**.
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1. Provide a name and description for the replication rule.
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1. Select **Push-based** or **Pull-based** replication, depending on whether you want to replicate images to or from the remote registry.
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1. For **Source resource filter**, identify the images to replicate.
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* **Name**: Replicate resources with a given name by entering an image name or fragment.
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* **Tag**: Replicate resources with a given tag by entering a tag name or fragment.
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* **Label**: Replicate resources with a given label by using the drop-down menu to select from the available labels.
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* **Resource**: Replicate images, charts, or both.
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The name filter and tag filters support the following patterns:
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* **\***: Matches any sequence of non-separator characters `/`.
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* **\*\***: Matches any sequence of characters, including path separators `/`.
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* **?**: Matches any single non-separator character `/`.
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* **{alt1,...}**: Matches a sequence of characters if one of the comma-separated alternatives matches. are as follows:
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* **\***: Matches any sequence of non-separator characters `/`.
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* **\*\***: Matches any sequence of characters, including path separators `/`.
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* **?**: Matches any single non-separator character `/`.
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* **{alt1,...}**: Matches a sequence of characters if one of the comma-separated alternatives matches.
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**NOTE:** You must add `library` if you want to replicate the official images of Docker Hub. For example, `library/hello-world` matches the official hello-world images.
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Pattern | String(Match or not)
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---------- | -------
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`library/*` | `library/hello-world`(Y)<br> `library/my/hello-world`(N)
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`library/**` | `library/hello-world`(Y)<br> `library/my/hello-world`(Y)
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`{library,goharbor}/**` | `library/hello-world`(Y)<br> `goharbor/harbor-core`(Y)<br> `google/hello-world`(N)
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`1.?` | `1.0`(Y)<br> `1.01`(N)
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1. Use the **Destination Registry** drop-down menu to select from the configured replication endpoints.
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1. Enter the name of the namespace in which to replicate resources in the **Destination namespace** text box.
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If you do not enter a namespace, resources are placed in the same namespace as in the source registry.
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1. Use the Trigger Mode drop-down menu to select how and when to run the rule.
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* **Manual**: Replicate the resources manually when needed. **Note**: Deletion operations are not replicated.
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* **Scheduled**: Replicate the resources periodically by defining a cron job. **Note**: Deletion operations are not replicated.
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* **Event Based**: When a new resource is pushed to the project, or an image is retagged, it is replicated to the remote registry immediately. If you select the **Delete remote resources when locally deleted**, if you delete an image, it is automatically deleted from the replication target.
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{{< note >}}
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You can filter images for replication based on the labels that are applied to the images. However, changing a label on an image does not trigger replication. Event-based replication is limited to pushing, retagging, and deleting images.
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{{< /note >}}
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1. Optionally select the Override checkbox to force replicated resources to replace resources at the destination with the same name.
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1. Click **Save** to create the replication rule.
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## What to Do Next
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After you create a replication rule, see [Running Replication Manually](manage-replications.md).
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