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[docs] Add backup and restore instructions for PostgreSQL

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Rephrase the descriptions for backup and restore variables

Co-authored-by: Nick Volynkin <nick.volynkin@gmail.com>
Signed-off-by: Nick Volynkin <nick.volynkin@gmail.com>
This commit is contained in:
kklinch0
2025-07-02 12:27:50 +03:00
committed by Andrei Kvapil
parent da3ee5d0ea
commit e99d238647
5 changed files with 79 additions and 53 deletions
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2
packages/apps/postgres/Chart.yaml
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@@ -16,7 +16,7 @@ type: application
# This is the chart version. This version number should be incremented each time you make changes
# to the chart and its templates, including the app version.
# Versions are expected to follow Semantic Versioning (https://semver.org/)
version: 0.17.0
version: 0.17.1
# This is the version number of the application being deployed. This version number should be
# incremented each time you make changes to the application. Versions are not expected to

87
packages/apps/postgres/README.md
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@@ -11,7 +11,50 @@ This managed service is controlled by the CloudNativePG operator, ensuring effic
- Docs: <https://cloudnative-pg.io/docs/>
- Github: <https://github.com/cloudnative-pg/cloudnative-pg>
## HowTos
## Operations
### How to enable backups
To back up a PostgreSQL application, an external S3-compatible storage is required.
To start regular backups, update the application, setting `backup.enabled` to `true`, and fill in the path and credentials to an `backup.*`:
```yaml
## @param backup.enabled Enable regular backups
## @param backup.schedule Cron schedule for automated backups
## @param backup.retentionPolicy Retention policy
## @param backup.destinationPath Path to store the backup (i.e. s3://bucket/path/to/folder)
## @param backup.endpointURL S3 Endpoint used to upload data to the cloud
## @param backup.s3AccessKey Access key for S3, used for authentication
## @param backup.s3SecretKey Secret key for S3, used for authentication
backup:
enabled: false
retentionPolicy: 30d
destinationPath: s3://bucket/path/to/folder/
endpointURL: http://minio-gateway-service:9000
schedule: "0 2 * * * *"
s3AccessKey: oobaiRus9pah8PhohL1ThaeTa4UVa7gu
s3SecretKey: ju3eum4dekeich9ahM1te8waeGai0oog
```
### How to recover a backup
CloudNativePG supports point-in-time-recovery.
Recovering a backup is done by creating a new database instance and restoring the data in it.
Create a new PostgreSQL application with a different name, but identical configuration.
Set `bootstrap.enabled` to `true` and fill in the name of the database instance to recover from and the recovery time:
```yaml
## @param bootstrap.enabled Restore database cluster from a backup
## @param bootstrap.recoveryTime Timestamp (PITR) up to which recovery will proceed, expressed in RFC 3339 format. If left empty, will restore latest
## @param bootstrap.oldName Name of database cluster before deleting
##
bootstrap:
enabled: false
recoveryTime: "" # leave empty for latest or exact timestamp; example: 2020-11-26 15:22:00.00000+00
oldName: "<previous-postgres-instance>"
```
### How to switch primary/secondary replica
@@ -19,24 +62,6 @@ See:
- <https://cloudnative-pg.io/documentation/1.15/rolling_update/#manual-updates-supervised>
### How to restore backup
find snapshot:
```bash
restic -r s3:s3.example.org/postgres-backups/database_name snapshots
```
restore:
```bash
restic -r s3:s3.example.org/postgres-backups/database_name restore latest --target /tmp/
```
more details:
- <https://blog.aenix.io/restic-effective-backup-from-stdin-4bc1e8f083c1>
## Parameters
### Common parameters
@@ -60,23 +85,23 @@ more details:
### Backup parameters
| Name | Description | Value |
| ------------------------ | -------------------------------------------------------------------- | ----------------------------------- |
| `backup.enabled` | Enable pereiodic backups | `false` |
| `backup.schedule` | Cron schedule for automated backups | `0 2 * * * *` |
| `backup.retentionPolicy` | The retention policy | `30d` |
| `backup.destinationPath` | The path where to store the backup (i.e. s3://bucket/path/to/folder) | `s3://BUCKET_NAME/` |
| `backup.endpointURL` | Endpoint to be used to upload data to the cloud | `http://minio-gateway-service:9000` |
| `backup.s3AccessKey` | The access key for S3, used for authentication | `oobaiRus9pah8PhohL1ThaeTa4UVa7gu` |
| `backup.s3SecretKey` | The secret key for S3, used for authentication | `ju3eum4dekeich9ahM1te8waeGai0oog` |
| Name | Description | Value |
| ------------------------ | ---------------------------------------------------------- | ----------------------------------- |
| `backup.enabled` | Enable regular backups | `false` |
| `backup.schedule` | Cron schedule for automated backups | `0 2 * * * *` |
| `backup.retentionPolicy` | Retention policy | `30d` |
| `backup.destinationPath` | Path to store the backup (i.e. s3://bucket/path/to/folder) | `s3://bucket/path/to/folder/` |
| `backup.endpointURL` | S3 Endpoint used to upload data to the cloud | `http://minio-gateway-service:9000` |
| `backup.s3AccessKey` | Access key for S3, used for authentication | `oobaiRus9pah8PhohL1ThaeTa4UVa7gu` |
| `backup.s3SecretKey` | Secret key for S3, used for authentication | `ju3eum4dekeich9ahM1te8waeGai0oog` |
### Bootstrap parameters
| Name | Description | Value |
| ------------------------ | --------------------------------------------------------------------------------------------------------------------------------------- | ------- |
| `bootstrap.enabled` | Restore cluster from backup | `false` |
| `bootstrap.recoveryTime` | Time stamp up to which recovery will proceed, expressed in RFC 3339 format, if empty, will restore latest | `""` |
| `bootstrap.oldName` | Name of cluster before deleting | `""` |
| `bootstrap.enabled` | Restore database cluster from a backup | `false` |
| `bootstrap.recoveryTime` | Timestamp (PITR) up to which recovery will proceed, expressed in RFC 3339 format. If left empty, will restore latest | `""` |
| `bootstrap.oldName` | Name of database cluster before deleting | `""` |
| `resources` | Explicit CPU and memory configuration for each PostgreSQL replica. When left empty, the preset defined in `resourcesPreset` is applied. | `{}` |
| `resourcesPreset` | Default sizing preset used when `resources` is omitted. Allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge. | `micro` |

20
packages/apps/postgres/values.schema.json
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@@ -62,7 +62,7 @@
"properties": {
"enabled": {
"type": "boolean",
"description": "Enable pereiodic backups",
"description": "Enable regular backups",
"default": false
},
"schedule": {
@@ -72,27 +72,27 @@
},
"retentionPolicy": {
"type": "string",
"description": "The retention policy",
"description": "Retention policy",
"default": "30d"
},
"destinationPath": {
"type": "string",
"description": "The path where to store the backup (i.e. s3://bucket/path/to/folder)",
"default": "s3://BUCKET_NAME/"
"description": "Path to store the backup (i.e. s3://bucket/path/to/folder)",
"default": "s3://bucket/path/to/folder/"
},
"endpointURL": {
"type": "string",
"description": "Endpoint to be used to upload data to the cloud",
"description": "S3 Endpoint used to upload data to the cloud",
"default": "http://minio-gateway-service:9000"
},
"s3AccessKey": {
"type": "string",
"description": "The access key for S3, used for authentication",
"description": "Access key for S3, used for authentication",
"default": "oobaiRus9pah8PhohL1ThaeTa4UVa7gu"
},
"s3SecretKey": {
"type": "string",
"description": "The secret key for S3, used for authentication",
"description": "Secret key for S3, used for authentication",
"default": "ju3eum4dekeich9ahM1te8waeGai0oog"
}
}
@@ -102,17 +102,17 @@
"properties": {
"enabled": {
"type": "boolean",
"description": "Restore cluster from backup",
"description": "Restore database cluster from a backup",
"default": false
},
"recoveryTime": {
"type": "string",
"description": "Time stamp up to which recovery will proceed, expressed in RFC 3339 format, if empty, will restore latest",
"description": "Timestamp (PITR) up to which recovery will proceed, expressed in RFC 3339 format. If left empty, will restore latest",
"default": ""
},
"oldName": {
"type": "string",
"description": "Name of cluster before deleting",
"description": "Name of database cluster before deleting",
"default": ""
}
}

20
packages/apps/postgres/values.yaml
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@@ -59,17 +59,17 @@ databases: {}
## @section Backup parameters
## @param backup.enabled Enable pereiodic backups
## @param backup.enabled Enable regular backups
## @param backup.schedule Cron schedule for automated backups
## @param backup.retentionPolicy The retention policy
## @param backup.destinationPath The path where to store the backup (i.e. s3://bucket/path/to/folder)
## @param backup.endpointURL Endpoint to be used to upload data to the cloud
## @param backup.s3AccessKey The access key for S3, used for authentication
## @param backup.s3SecretKey The secret key for S3, used for authentication
## @param backup.retentionPolicy Retention policy
## @param backup.destinationPath Path to store the backup (i.e. s3://bucket/path/to/folder)
## @param backup.endpointURL S3 Endpoint used to upload data to the cloud
## @param backup.s3AccessKey Access key for S3, used for authentication
## @param backup.s3SecretKey Secret key for S3, used for authentication
backup:
enabled: false
retentionPolicy: 30d
destinationPath: s3://BUCKET_NAME/
destinationPath: s3://bucket/path/to/folder/
endpointURL: http://minio-gateway-service:9000
schedule: "0 2 * * * *"
s3AccessKey: oobaiRus9pah8PhohL1ThaeTa4UVa7gu
@@ -77,9 +77,9 @@ backup:
## @section Bootstrap parameters
## @param bootstrap.enabled Restore cluster from backup
## @param bootstrap.recoveryTime Time stamp up to which recovery will proceed, expressed in RFC 3339 format, if empty, will restore latest
## @param bootstrap.oldName Name of cluster before deleting
## @param bootstrap.enabled Restore database cluster from a backup
## @param bootstrap.recoveryTime Timestamp (PITR) up to which recovery will proceed, expressed in RFC 3339 format. If left empty, will restore latest
## @param bootstrap.oldName Name of database cluster before deleting
##
bootstrap:
enabled: false

3
packages/apps/versions_map
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@@ -103,7 +103,8 @@ postgres 0.12.1 632224a3
postgres 0.14.0 62cb694d
postgres 0.15.1 4369b031
postgres 0.16.0 70f82667
postgres 0.17.0 HEAD
postgres 0.17.0 acd4663a
postgres 0.17.1 HEAD
rabbitmq 0.1.0 263e47be
rabbitmq 0.2.0 53f2365e
rabbitmq 0.3.0 6c5cf5bf