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bd9e283d3b
This patch removes the loophole to leave resource requests and limits unspecified in managed apps. Any of cpu, memory, and ephemeral storage are now filled in from the resource preset (default or user-specified) if not explicitly specified in .Values.resources. "none" is no longer an accepted value in resourcePresets and the primary resources now always have some explicit value for proper billing and isolation. Signed-off-by: Timofei Larkin <lllamnyp@gmail.com>
Managed Clickhouse Service
ClickHouse is an open source high-performance and column-oriented SQL database management system (DBMS). It is used for online analytical processing (OLAP). Cozystack platform uses Altinity operator to provide ClickHouse.
How to restore backup:
-
Find a snapshot:
restic -r s3:s3.example.org/clickhouse-backups/table_name snapshots -
Restore it:
restic -r s3:s3.example.org/clickhouse-backups/table_name restore latest --target /tmp/
For more details, read Restic: Effective Backup from Stdin.
Parameters
Common parameters
| Name | Description | Value |
|---|---|---|
size |
Size of Persistent Volume for data | 10Gi |
logStorageSize |
Size of Persistent Volume for logs | 2Gi |
shards |
Number of Clickhouse shards | 1 |
replicas |
Number of Clickhouse replicas | 2 |
storageClass |
StorageClass used to store the data | "" |
logTTL |
TTL (expiration time) for query_log and query_thread_log | 15 |
Configuration parameters
| Name | Description | Value |
|---|---|---|
users |
Users configuration | {} |
Backup parameters
| Name | Description | Value |
|---|---|---|
backup.enabled |
Enable periodic backups | false |
backup.s3Region |
AWS S3 region where backups are stored | us-east-1 |
backup.s3Bucket |
S3 bucket used for storing backups | s3.example.org/clickhouse-backups |
backup.schedule |
Cron schedule for automated backups | 0 2 * * * |
backup.cleanupStrategy |
Retention strategy for cleaning up old backups | --keep-last=3 --keep-daily=3 --keep-within-weekly=1m |
backup.s3AccessKey |
Access key for S3, used for authentication | oobaiRus9pah8PhohL1ThaeTa4UVa7gu |
backup.s3SecretKey |
Secret key for S3, used for authentication | ju3eum4dekeich9ahM1te8waeGai0oog |
backup.resticPassword |
Password for Restic backup encryption | ChaXoveekoh6eigh4siesheeda2quai0 |
resources |
Explicit CPU/memory resource requests and limits for the Clickhouse service | {} |
resourcesPreset |
Use a common resources preset when resources is not set explicitly. |
small |
In production environments, it's recommended to set resources explicitly.
Example of resources:
resources:
limits:
cpu: 4000m
memory: 4Gi
requests:
cpu: 100m
memory: 512Mi
Allowed values for resourcesPreset are none, nano, micro, small, medium, large, xlarge, 2xlarge.
This value is ignored if resources value is set.