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37 lines
2.2 KiB
Markdown
37 lines
2.2 KiB
Markdown
---
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title: High availability for GitHub Actions
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intro: 'There are some special considerations for administering {% data variables.product.prodname_actions %} in a high availability configuration.'
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versions:
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enterprise-server: '>=3.0'
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type: reference
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topics:
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- Actions
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- Enterprise
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- High availability
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- Infrastructure
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- Storage
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---
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### Replication or redundancy of your {% data variables.product.prodname_actions %} data
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{% data reusables.actions.enterprise-storage-ha-backups %}
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We strongly recommend that you configure your {% data variables.product.prodname_actions %} external storage to use data redundancy or replication. For more information, refer to your storage provider's documentation:
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* [Azure Storage redundancy documentation](https://docs.microsoft.com/en-us/azure/storage/common/storage-redundancy)
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* [Amazon S3 replication documentation](https://docs.aws.amazon.com/AmazonS3/latest/dev/replication.html)
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### High availability replicas
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#### Promoting a replica
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When enabling a high availability configuration, any replicas are automatically configured to use the {% data variables.product.prodname_actions %} external storage configuration. If you need to initiate a failover to promote a replica, no extra configuration changes are required for {% data variables.product.prodname_actions %}.
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For more information, see "[Initiating a failover to your replica appliance](/admin/enterprise-management/initiating-a-failover-to-your-replica-appliance)."
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#### Removing a high availability replica
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Avoid letting multiple instances to write to the same {% data variables.product.prodname_actions %} external storage. This could occur when using the `ghe-repl-teardown` command to stop and permanently remove a {% data variables.product.prodname_actions %}-enabled replica. This is because the replica will be converted into a standalone {% data variables.product.prodname_ghe_server %}, and after the teardown it will still use the same external storage configuration as the primary.
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To help avoid this issue, we recommend either decommissioning the replica server or updating its {% data variables.product.prodname_actions %} configuration with different external storage.
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