Forward port small PCR changes to 25.4 #20384
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Forward port changes to 25.4
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lgtm pending suggestions
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| In this tutorial, you will set up [**physical cluster replication (PCR)**]({% link {{ page.version.version }}/physical-cluster-replication-overview.md %}) between a primary cluster and standby cluster. The primary cluster is _active_, serving application traffic. The standby cluster is _passive_, accepting updates from the primary cluster. The replication stream will send changes from the primary to the standby. | ||
| {{site.data.alerts.callout_info}} | ||
| Physical cluster replication is supported in CockroachDB {{ site.data.products.core }} clusters and is in [limited access]({% link {{ page.version.version }}/cockroachdb-feature-availability.md %}) on [Cockroach Cloud]({% link cockroachcloud/physical-cluster-replication.md %}). |
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| Physical cluster replication is supported in CockroachDB {{ site.data.products.core }} clusters and is in [limited access]({% link {{ page.version.version }}/cockroachdb-feature-availability.md %}) on [Cockroach Cloud]({% link cockroachcloud/physical-cluster-replication.md %}). | |
| Physical cluster replication is supported in CockroachDB {{ site.data.products.core }} clusters and is in [limited access]({% link {{ page.version.version }}/cockroachdb-feature-availability.md %}) on [CockroachDB {{ site.data.products.cloud }}]({% link cockroachcloud/physical-cluster-replication.md %}). |
| - All nodes in each cluster will need access to the Certificate Authority for the other cluster. Refer to [Manage the cluster certificates](#step-3-manage-the-cluster-certificates). | ||
| - The primary and standby clusters **must have the same [region topology]({% link {{ page.version.version }}/topology-patterns.md %})**. For example, replicating a multi-region primary cluster to a single-region standby cluster is not supported. Mismatching regions between a multi-region primary and standby cluster is also not supported. | ||
| - All nodes in each cluster will need access to the Certificate Authority for the other cluster. Refer to [Manage cluster certificates](#step-3-manage-cluster-certificates-and-generate-connection-strings). | ||
| - The primary and standby clusters can have different [region topologies]({% link {{ page.version.version }}/topology-patterns.md %}). However, behavior for features that rely on multi-region primitives, such as Region by Row and Region by Table, may be affected. |
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maybe use the actual terms with links:
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| - The primary and standby clusters can have different [region topologies]({% link {{ page.version.version }}/topology-patterns.md %}). However, behavior for features that rely on multi-region primitives, such as Region by Row and Region by Table, may be affected. | |
| - The primary and standby clusters can have different [region topologies]({% link {{ page.version.version }}/topology-patterns.md %}). However, behavior for features that rely on multi-region primitives, such as [`REGIONAL BY ROW`]({% link {{ page.version.version }}/table-localities.md %}#regional-tables) and [`REGIONAL BY TABLE`]({% link {{ page.version.version }}/table-localities.md %}#regional-by-row-tables), may be affected. |
| To _fail over_ to the standby cluster, follow the instructions on the [Fail Over from a Primary Cluster to a Standby Cluster]({% link {{ page.version.version }}/failover-replication.md %}) page. | ||
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| For details on how to _fail back_ after replicating a non-virtualized cluster, refer to [Fail back after PCR from an existing cluster]({% link {{ page.version.version }}/failover-replication.md %}#fail-back-after-pcr-from-an-existing-cluster). | ||
| For details on how to _fail back_ after replicating a non-virtualized cluster, refer to [Fail back after replicating from an existing cluster]({% link {{ page.version.version }}/failover-replication.md %}#fail-back-after-replicating-from-an-existing-primary-cluster). |
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| For details on how to _fail back_ after replicating a non-virtualized cluster, refer to [Fail back after replicating from an existing cluster]({% link {{ page.version.version }}/failover-replication.md %}#fail-back-after-replicating-from-an-existing-primary-cluster). | |
| For details on how to _fail back_ after replicating a non-virtualized cluster, refer to [Fail back after replicating from an existing primary cluster]({% link {{ page.version.version }}/failover-replication.md %}#fail-back-after-replicating-from-an-existing-primary-cluster). |
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Sep 19, 2025
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Addresses: DOC-14757
Forward ports easy PCR changes to 25.4