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80 lines
5.9 KiB
Markdown
80 lines
5.9 KiB
Markdown
# Managed PostgreSQL Service
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PostgreSQL is currently the leading choice among relational databases, known for its robust features and performance. Our Managed PostgreSQL Service takes advantage of platform-side implementation to provide a self-healing replicated cluster. This cluster is efficiently managed using the highly acclaimed CloudNativePG operator, which has gained popularity within the community.
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## Deployment Details
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This managed service is controlled by the CloudNativePG operator, ensuring efficient management and seamless operation.
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- Docs: <https://cloudnative-pg.io/docs/>
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- Github: <https://github.com/cloudnative-pg/cloudnative-pg>
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## HowTos
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### How to switch master/slave replica
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See:
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- <https://cloudnative-pg.io/documentation/1.15/rolling_update/#manual-updates-supervised>
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### How to restore backup
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find snapshot:
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```bash
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restic -r s3:s3.example.org/postgres-backups/database_name snapshots
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```
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restore:
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```bash
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restic -r s3:s3.example.org/postgres-backups/database_name restore latest --target /tmp/
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```
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more details:
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- <https://itnext.io/restic-effective-backup-from-stdin-4bc1e8f083c1>
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## Parameters
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### Common parameters
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| Name | Description | Value |
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| --------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ | ------- |
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| `external` | Enable external access from outside the cluster | `false` |
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| `size` | Persistent Volume size | `10Gi` |
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| `replicas` | Number of Postgres replicas | `2` |
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| `storageClass` | StorageClass used to store the data | `""` |
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| `postgresql.parameters.max_connections` | Determines the maximum number of concurrent connections to the database server. The default is typically 100 connections | `100` |
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| `quorum.minSyncReplicas` | Minimum number of synchronous replicas that must acknowledge a transaction before it is considered committed. | `0` |
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| `quorum.maxSyncReplicas` | Maximum number of synchronous replicas that can acknowledge a transaction (must be lower than the number of instances). | `0` |
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### Configuration parameters
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| Name | Description | Value |
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| ----------- | ----------------------- | ----- |
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| `users` | Users configuration | `{}` |
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| `databases` | Databases configuration | `{}` |
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### Backup parameters
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| Name | Description | Value |
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| ------------------------ | -------------------------------------------------------------------- | ----------------------------------- |
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| `backup.enabled` | Enable pereiodic backups | `false` |
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| `backup.schedule` | Cron schedule for automated backups | `0 2 * * * *` |
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| `backup.retentionPolicy` | The retention policy | `30d` |
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| `backup.destinationPath` | The path where to store the backup (i.e. s3://bucket/path/to/folder) | `s3://BUCKET_NAME/` |
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| `backup.endpointURL` | Endpoint to be used to upload data to the cloud | `http://minio-gateway-service:9000` |
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| `backup.s3AccessKey` | The access key for S3, used for authentication | `oobaiRus9pah8PhohL1ThaeTa4UVa7gu` |
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| `backup.s3SecretKey` | The secret key for S3, used for authentication | `ju3eum4dekeich9ahM1te8waeGai0oog` |
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### Bootstrap parameters
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| Name | Description | Value |
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| ------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------- |
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| `bootstrap.enabled` | Restore cluster from backup | `false` |
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| `bootstrap.recoveryTime` | Time stamp up to which recovery will proceed, expressed in RFC 3339 format, if empty, will restore latest | `""` |
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| `bootstrap.oldName` | Name of cluster before deleting | `""` |
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| `resources` | Resources | `{}` |
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| `resourcesPreset` | Set container resources according to one common preset (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge). This is ignored if resources is set (resources is recommended for production). | `micro` |
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