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 MariaDB Service
The Managed MariaDB Service offers a powerful and widely used relational database solution. This service allows you to create and manage a replicated MariaDB cluster seamlessly.
Deployment Details
This managed service is controlled by mariadb-operator, ensuring efficient management and seamless operation.
- Docs: https://mariadb.com/kb/en/documentation/
- GitHub: https://github.com/mariadb-operator/mariadb-operator
HowTos
How to switch master/slave replica
kubectl edit mariadb <instnace>
update:
spec:
replication:
primary:
podIndex: 1
check status:
NAME READY STATUS PRIMARY POD AGE
<instance> True Running app-db1-1 41d
How to restore backup:
find snapshot:
restic -r s3:s3.example.org/mariadb-backups/database_name snapshots
restore:
restic -r s3:s3.example.org/mariadb-backups/database_name restore latest --target /tmp/
more details:
Known issues
-
Replication can't not be finished with various errors
-
Replication can't be finised in case if binlog purged Until mariadbbackup is not used to bootstrap a node by mariadb-operator (this feature is not inmplemented yet), follow these manual steps to fix it: https://github.com/mariadb-operator/mariadb-operator/issues/141#issuecomment-1804760231
-
Corrupted indicies Sometimes some indecies can be corrupted on master replica, you can recover them from slave:
mysqldump -h <slave> -P 3306 -u<user> -p<password> --column-statistics=0 <database> <table> ~/tmp/fix-table.sql mysql -h <master> -P 3306 -u<user> -p<password> <database> < ~/tmp/fix-table.sql
Parameters
Common parameters
| Name | Description | Value |
|---|---|---|
external |
Enable external access from outside the cluster | false |
size |
Persistent Volume size | 10Gi |
replicas |
Number of MariaDB replicas | 2 |
storageClass |
StorageClass used to store the data | "" |
Configuration parameters
| Name | Description | Value |
|---|---|---|
users |
Users configuration | {} |
databases |
Databases configuration | {} |
Backup parameters
| Name | Description | Value |
|---|---|---|
backup.enabled |
Enable pereiodic backups | false |
backup.s3Region |
The AWS S3 region where backups are stored | us-east-1 |
backup.s3Bucket |
The S3 bucket used for storing backups | s3.example.org/postgres-backups |
backup.schedule |
Cron schedule for automated backups | 0 2 * * * |
backup.cleanupStrategy |
The strategy for cleaning up old backups | --keep-last=3 --keep-daily=3 --keep-within-weekly=1m |
backup.s3AccessKey |
The access key for S3, used for authentication | oobaiRus9pah8PhohL1ThaeTa4UVa7gu |
backup.s3SecretKey |
The secret key for S3, used for authentication | ju3eum4dekeich9ahM1te8waeGai0oog |
backup.resticPassword |
The password for Restic backup encryption | ChaXoveekoh6eigh4siesheeda2quai0 |
resources |
Resources | {} |
resourcesPreset |
Use a common resources preset when resources is not set explicitly. (allowed values: none, nano, micro, small, medium, large, xlarge, 2xlarge) |
nano |