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43 lines
1.7 KiB
Plaintext
43 lines
1.7 KiB
Plaintext
---
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title: Maintenance Mode
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---
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:::info Availability
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Maintenance mode was introduced in Unleash 4.22.0.
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:::
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Unleash maintenance mode is a feature that lets administrators put Unleash into a mostly read-only mode. While Unleash is in maintenance mode:
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- Unleash users **can not change any configuration settings**
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- Unleash's APIs will not allow you to persist any changes
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However, any metrics sent to Unleash from client SDKs are still processed, so this mode does not have any effect on client SDKs.
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Maintenance mode is particularly useful during important events when any accidental or deliberate changes the feature/strategy configurations could lead to issues.
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## Maintenance mode configuration
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Maintenance mode is controlled from the "maintenance" section of the Unleash admin configuration page.
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When maintenance mode is enabled, a warning banner appears at the top of the Unleash dashboard, indicating that any changes made during this period will not be saved and may result in errors.
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## Maintenance mode and scheduled jobs
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When maintenance mode is enabled all internal jobs performed by Unleash such as updating metrics and statistics are paused. When maintenance mode is toggled back to disabled later, all scheduled
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jobs are resumed.
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## Maintenance mode and read-only DB user
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When maintenance mode is enabled most DB operations are suspended so you can use even read-only DB user. There's one exception though.
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Unleash DB user role needs a DELETE and UPDATE permission on the unleash_session table.
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```
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GRANT DELETE ON unleash_session TO my_db_role;
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GRANT UPDATE ON unleash_session TO my_db_role;
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```
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