Warning
Error Code:
1708
MariaDB Error 1708: Configuration Value Too Low
Description
This error signifies that a configured system variable or option has been set to a value lower than its allowed minimum. This minimum might be an inherent lower bound or dictated by another related parameter, preventing proper operation or resource allocation. It commonly occurs during server startup, configuration updates, or when defining specific object properties.
Error Message
The value of '%s' should be no less than the value of '%s'
Known Causes
4 known causesInvalid System Variable Setting
A MariaDB system variable (e.g., `innodb_buffer_pool_size`, `max_connections`) is explicitly configured to a value below its documented or calculated minimum allowed threshold.
Dependent Parameter Mismatch
The value of one configuration parameter is constrained by another, and the dependent parameter is set lower than the value required by its master parameter.
Outdated Configuration File Entry
The `my.cnf` or `my.ini` configuration file contains a value for a variable that is no longer valid or acceptable for the current MariaDB server version.
Dynamic Variable Assignment Below Minimum
An attempt was made to change a session or global variable dynamically (e.g., using `SET GLOBAL`) to a value that falls below its predefined minimum range.
Solutions
3 solutions available1. Increase `innodb_buffer_pool_size` easy
Adjust `innodb_buffer_pool_size` to be at least as large as `innodb_log_file_size` multiplied by `innodb_log_files_in_group`.
1
Connect to your MariaDB server using a client like `mysql` or `mariadb`.
mariadb -u your_user -p2
Check the current values of `innodb_buffer_pool_size`, `innodb_log_file_size`, and `innodb_log_files_in_group`.
SHOW VARIABLES LIKE 'innodb_buffer_pool_size';
SHOW VARIABLES LIKE 'innodb_log_file_size';
SHOW VARIABLES LIKE 'innodb_log_files_in_group';3
Calculate the required minimum value for `innodb_buffer_pool_size`: `innodb_log_file_size` * `innodb_log_files_in_group`.
For example, if `innodb_log_file_size` is 512M and `innodb_log_files_in_group` is 2, the minimum is 1024M (1G).4
Edit your MariaDB configuration file (e.g., `my.cnf` or `mariadb.conf.d/50-server.cnf`). Locate or add the `innodb_buffer_pool_size` directive under the `[mysqld]` section and set it to a value greater than or equal to the calculated minimum, and ideally larger for performance.
[mysqld]
innodb_buffer_pool_size = 2G # Example: Set to 2 Gigabytes5
Save the configuration file and restart the MariaDB service.
sudo systemctl restart mariadb2. Adjust `innodb_log_file_size` or `innodb_log_files_in_group` medium
If you cannot increase `innodb_buffer_pool_size` significantly, consider adjusting the log file parameters.
1
Connect to your MariaDB server.
mariadb -u your_user -p2
Check current log file settings.
SHOW VARIABLES LIKE 'innodb_log_file_size';
SHOW VARIABLES LIKE 'innodb_log_files_in_group';3
Determine if reducing `innodb_log_file_size` or `innodb_log_files_in_group` would satisfy the condition, while still maintaining acceptable performance.
A smaller log file size or fewer log files will require less buffer pool space.4
Edit your MariaDB configuration file. Modify `innodb_log_file_size` or `innodb_log_files_in_group` under the `[mysqld]` section.
[mysqld]
innodb_log_file_size = 256M # Example: Reduce to 256 Megabytes
# innodb_log_files_in_group = 1 # Example: Reduce to 1 group5
Save the configuration file. **Important:** Changing log file parameters requires a specific procedure: stop MariaDB, remove the old log files (ib_logfile0, ib_logfile1, etc.), start MariaDB, and then create new log files. This process can lead to data loss if not performed correctly, so ensure you have a full backup.
STOP MariaDB
rm /var/lib/mysql/ib_logfile*
START MariaDB6
After restarting, you may need to re-enable InnoDB and create new log files, or MariaDB might do this automatically upon startup.
This step is highly dependent on your MariaDB version and setup. Consult MariaDB documentation for the exact procedure for your version.3. Understand the Relationship Between InnoDB Parameters advanced
Educate yourself on how `innodb_buffer_pool_size`, `innodb_log_file_size`, and `innodb_log_files_in_group` interact to prevent future occurrences.
1
Read the official MariaDB documentation on InnoDB configuration parameters, specifically focusing on `innodb_buffer_pool_size`, `innodb_log_file_size`, and `innodb_log_files_in_group`.
Search for 'MariaDB InnoDB configuration' in your preferred search engine.2
Understand that `innodb_buffer_pool_size` caches data and indexes for InnoDB tables. `innodb_log_file_size` and `innodb_log_files_in_group` define the size and number of redo log files used for transaction durability and crash recovery.
The error message indicates a mismatch where the buffer pool is too small to accommodate the redo log configuration, which is crucial for write operations and recovery.3
When tuning these parameters, always consider the total available RAM on your server. `innodb_buffer_pool_size` is typically set to 50-80% of your system's RAM for optimal performance, but this must be balanced with other system processes and the requirements of the log files.
Ensure that the sum of `innodb_log_file_size` multiplied by `innodb_log_files_in_group` is less than or equal to `innodb_buffer_pool_size`.4
Regularly review your `my.cnf` or `mariadb.conf.d` files and understand the impact of each parameter on your database's performance and stability.
Consider using performance tuning tools or scripts to guide your configuration adjustments.