28 lines
1.6 KiB
Markdown
28 lines
1.6 KiB
Markdown
## Etcd v2.3.7 Persistent
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### Backup Configuration
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Backups are enabled/disabled via the `Enable Backups` radio buttons.
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The backup period durations must be a sequence of decimal numbers, each with optional fraction and a unit suffix, such as `300ms`, `1.5h` or `2h45m`. Valid time units are `ns`, `us` or `µs`, `ms`, `s`, `m` and `h`.
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The `Backup Creation Period` duration indicates at what rate backups should be created. It is not recommended to create backups more often than `30s`.
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The `Backup Retention Period` duration indicates at what rate historical backups should be deleted. Backups outside of the retention period are expired after the next successful backup.
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The maximum number of backups stored on disk at any given moment follows the equation `ceiling(retention period / creation period)`. For example, `5m` creation period with `4h` retention period would store at most `ceiling(4h / 5m)` backups or `48` backups. A conservative estimate for backup size is `50MB`, so the attached network storage should have at least `2.4GB` free space. Backup sizes will vary depending on usage.
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If backups are disabled, the values for `Backup Creation Period` and `Backup Retention Period` are ignored.
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### Disaster Recovery
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See [this wiki](https://github.com/rancher/rancher/wiki/Kubernetes-Management#disaster-recovery) for instructions.
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### Restoring Backups
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See [this wiki](https://github.com/rancher/rancher/wiki/Kubernetes-Management#restoring-backups) for instructions.
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### Upgrading to this Version: WARNING
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Automated upgrading to this version is unsupported. Please capture a snapshot of a node's data directory and follow backup restoration process if necessary.
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