# Create a MariaDB service MariaDB is the open source relational database loved by developers all over the world. Created by MySQL's original developers, MariaDB is compatible with MySQL and guaranteed to stay open source forever. ## Create MariaDB using Zerops GUI :::note If you're migrating from another database system such as MySQL, please review the [migration information](#migrating-from-other-database-systems) section first, as some critical settings must be configured at creation time. ::: First, set up a project in Zerops GUI. Then go to the project dashboard page and choose **Add new service** in the left menu in the **Services** block. Then add a new MariaDB service: ### Choose MariaDB version Following MariaDB versions are currently supported: ### Set a hostname Enter a unique service identifier like `mariadb`, `sql`, `db` etc. #### Limitations: - Duplicate services with the same name within the same project are not allowed - Maximum 25 characters - Must contain only lowercase ASCII letters (a-z) or numbers (0-9) :::caution The hostname is fixed after the service is created and cannot be changed later. ::: ### Configure auto scaling Zerops automatically scales MariaDB services based on actual database usage. Configure the scaling parameters to match your database needs and control costs. **CPU Mode**: Choose between shared (cost-effective) or dedicated (consistent performance). **Resource Limits**: Set minimum and maximum resources for CPU, RAM, and disk to control costs and ensure performance. **Deployment Mode**: Choose the reliability configuration for your MariaDB service: - **Highly Available**: Multiple containers with redundancy across different physical machines. Recommended for production environments. - **Single Container**: One container suitable for development and non-critical environments. :::warning Deployment mode cannot be changed after service creation. ::: :::tip Learn More For detailed scaling configuration, deployment mode details, and troubleshooting, see: - [How Zerops scales MariaDB](/mariadb/how-to/scale) - Database-specific scaling guide - [Automatic Scaling and High Availability](/features/scaling) - Complete technical details ::: ## Create MariaDB using zCLI :::note If you're migrating from another database system such as MySQL, please review the [migration information](#migrating-from-other-database-systems) section first, as some critical settings must be configured at creation time. ::: zCLI is the Zerops command-line tool. To create a new MariaDB service via the command-line, follow these steps: 1. [Install & setup zCLI](/references/cli) 2. [Create a project description file](#create-a-project-description-file) 3. Create a project and a MariaDB service ### Create a project description file Zerops uses a yaml format file to describe the project infrastructure. #### Basic example Create a directory `my-project`. Create a `description.yaml` file inside the directory with the following content: ```yaml # basic project data project: # project name name: my-project # array of project services services: - # service name hostname: mariadb1 # service type and version number in mariadb@{version} format type: mariadb@10.4 # mode of operation "HA"/"NON_HA" mode: NON_HA ``` The yaml file describes your future project infrastructure. The project will contain one MariaDB 10.4 service in single container mode with default [auto scaling](/mariadb/how-to/scale) configuration. Hostname will be set to `mariadb1`. #### Full example Create a directory `my-project`. Create a `description.yaml` file inside the directory with the following content: ```yaml # basic project data project: # project name name: my-project # optional: project description description: A project with a MariaDB database # optional: project tags tags: - DEMO - ZEROPS # array of project services services: - # first service hostname hostname: mariadb1 # service type and version number in mariadb@{version} format type: mariadb@10.4 # mode of operation "HA"/"NON_HA" mode: HA # optional: vertical auto scaling customization verticalAutoscaling: cpuMode: DEDICATED minCpu: 2 maxCpu: 5 minRam: 2 maxRam: 24 minDisk: 6 maxDisk: 50 startCpuCoreCount: 3 minFreeRamGB: 0.5 minFreeRamPercent: 20 # optional: system variables configuration envSecrets: lower_case_table_names: "1" - # second service hostname hostname: mariadb2 # service type and version number in mariadb@{version} format type: mariadb@10.4 # mode of operation "HA"/"non_HA" mode: NON_HA ``` The yaml file describes your future project infrastructure. The project will contain two MariaDB 10.4 services. The hostname of the first service will be set to `mariadb1`. The highly available mode will be chosen and the custom [auto scaling configuration](/mariadb/how-to/scale) will be set. The `lower_case_table_names` system variable will be set to "1". The hostname of the second service will be set to `mariadb2`. The single container mode will be chosen and the default [auto scaling configuration](/mariadb/how-to/scale) will be set. #### Description of description.yaml parameters The `project:` section is required. Only one project can be defined.
Parameter Description Limitations
name The name of the new project. Duplicates are allowed.
description Optional. Description of the new project. Maximum 255 characters.
tags Optional. One or more string tags. Tags do not have a functional meaning, they only provide better orientation in projects.
At least one service in `services:` section is required. You can create a project with multiple services. The example above contains only MariaDB services but you can create a `description.yaml` with [different types] of services.
Parameter Description Limitations
hostname A unique service identifier like `mariadb`,`sql`, `db` etc.
  • duplicate services with the same name in the same project are forbidden
  • maximum 25 characters
  • must contain only lowercase ASCII letters (a-z) or numbers (0-9)
type Specifies the service type and version. See what [MariaDB service types](/references/import-yaml/type-list#database-services) are currently supported.
mode Defines the operation mode of MariaDB service. HA Zerops will create a MariaDB cluster with 3 database containers and 2 free database proxies. This mode is suited for production. Zerops always keep the 3 database containers on different physical machines. All your data is stored redundantly in 3 copies. In case of a failure of a container or the underlying physical machine, Zerops automatically disconnects the failed container from the cluster, creates a new container and syncs all data from the remaining 2 copies. Finally the broken container is automatically deleted. NON_HA Zerops will create a MariaDB database installed in a single container. Useful for non-essential data or dev environments. Your data is stored only in a single container. If the container or the underlying physical machine fails, your data since the last backup are lost. Zerops doesn't provide any automatic repairs of single node MariaDB services.
verticalAutoscaling Defines [custom vertical auto scaling parameters](/mariadb/how-to/scaling#configure-scaling) All verticalAutoscaling attributes are optional. Not specified attributes will be set to their default values.
- cpuMode Accepts `SHARED`, `DEDICATED` values. Default is `SHARED`
- minCpu/maxCpu Set the minCpu or maxCpu in CPU cores (integer).
- minRam/maxRam Set the minRam or maxRam in GB (float).
- minDisk/maxDisk Set the minDisk or maxDisk in GB (float).
envSecrets Defines [secret environment variables](/features/env-variables#2-secret-variables) for the service
:::caution The MariaDB service **hostname** and **mode** are fixed after the service is created. They can't be changed later. ::: ### Create a project based on the description.yaml When you have your `description.yaml` ready, use the `zcli project project-import` command to create a new project and the service infrastructure. ```sh Usage: zcli project project-import importYamlPath [flags] Flags: -h, --help Help for the project import command. --org-id string If you have access to more than one organization, you must specify the org ID for which the project is to be created. --working-dir string Sets a custom working directory. Default working directory is the current directory. (default "./") ``` Zerops will create a project and one or more services based on the `description.yaml` content. Maximum size of the `description.yaml` file is 100 kB. You don't specify the project name in the `zcli project project-import` command, because the project name is defined in the `description.yaml`. If you have access to more than one client, you must specify the client ID for which the project is to be created. The `clientID` is located in the Zerops GUI under the client name on the project dashboard page. ### Add MariaDB service to an existing project #### Example Create a directory `my-project` if it doesn't exist. Create an `import.yaml` file inside the `my-project` directory with following content: ```bash # array of project services services: - # service name hostname: mariadb1 # service type and version number in mariadb@{version} format type: mariadb@10.4 # mode of operation "HA"/"NON_HA" mode: NON_HA # optional: system variables configuration envSecrets: lower_case_table_names: "1" ``` The yaml file describes the list of one or more services that you want to add to your existing project. In the example above, one MariaDB 10.4 service in single container mode with default [auto scaling](/mariadb/how-to/scale) configuration will be added to your project. Hostname of the new service will be set to `mariadb1`. The `lower_case_table_names` system variable will be set to "1". The content of the `services:` section of `import.yaml` is identical to the [project description file](#create-a-project-description-file). The `import.yaml` never contains the `project:` section because the project already exists. When you have your `import.yaml` ready, use the `zcli project service-import` command to add one or more services to your existing Zerops project. ```sh Usage: zcli project service-import importYamlPath [flags] Flags: -h, --help Help for the project service import command. -P, --project-id string If you have access to more than one project, you must specify the project ID for which the command is to be executed. ``` zCLI commands are interactive, when you press enter after `zcli project service-import importYamlPath`, you will be given a list of your projects to choose from. Maximum size of the `import.yaml` file is 100 kB. ## Migrating from other database systems ### Configure system variables When migrating to MariaDB in Zerops from other database systems, you may need to configure specific system variables to maintain compatibility with your existing applications. #### Setting `lower_case_table_names` for MySQL compatibility The `lower_case_table_names` system variable determines how MariaDB handles table name case sensitivity:
Value Table Name Storage Comparison Behavior
0 Stored as specified (preserves case) Case-sensitive
1 Stored in lowercase Case-insensitive
2 Stored as specified (preserves case) Case-insensitive
:::caution This variable must be configured when the MariaDB instance is first created and cannot be changed afterward. This is a limitation of MariaDB itself, not specific to Zerops. ::: When configuring this in Zerops: - **Using GUI**: Set the `lower_case_table_names` parameter in the advanced options section when creating a new MariaDB service - **Using YAML**: Include it in your service configuration under the `envSecrets` section (see examples in the [Create MariaDB using zCLI](#create-mariadb-using-zcli) section) ##### Migration considerations If you're migrating from MySQL to MariaDB and your application relies on a specific table name case handling: 1. Determine the value used in your source MySQL installation 2. Configure the same value in your Zerops MariaDB configuration before initializing the database 3. For most migrations from MySQL 5.7, setting the value to "1" is recommended for compatibility After deploying your MariaDB service, you can verify the settings with this SQL command: ```sql SELECT @@lower_case_file_system, @@lower_case_table_names; ``` :::important If you need to change this setting after the database has been initialized, you'll need to create a new MariaDB service with the correct configuration and migrate your data. :::