Configuring the MySQL Server

These instructions apply to the version of MySQL specified in the Software Requirements.

Terminology:

MySQL Server

The database server which has MySQL Server software installed, configured, and running.

MySQL Client

Any other computer which connects to the database server and has the MySQL Client software installed, configured, and running.

• The client connects to the database server to access data, for example, webserver.

Configuration file

my.cnf, a MySQL configuration file that may be edited and used in the MySQL client or MySQL Server installation.

MySQL Settings

Storage Engine default-storage-engine = innodb Server System Variables Configuration It is observed that READ_UNCOMMITTED does not work well with Row-Based Replication. Use one of the following configurations: a) Either STATEMENT-BASED or MIXED replication with the Transaction Isolation level dictated by business needs. b) ROW-BASED replication with transaction_isolation = READ-COMMITTED User Configuration Create a user account with password in MySQL The Application Server will use the user details. The user account should have all MySQL privileges enabled on all databases Use the default root account that is created during the installation of MySQL. You can also create a non-root MySQL user to run Agile Apps. For more information, see Creating a non-root MySQL User to Run Agile Apps. sql-mode Configuration Add the following code to the my.cnf file located in the MySQL Client: sql-mode="PIPES_AS_CONCAT,ANSI_QUOTES" Add the following code to the my.cnf file located in the MySQL Server: sql-mode="PIPES_AS_CONCAT,ANSI_QUOTES" MySQL Configuration for UTF-8 Unicode character set for 5.7 Version Add the following code to the my.cnf file, located in the MySQL Client: default-character-set=utf8 Add the following code to the my.cnf file, located in MySQL Server: character-set-server=utf8 collation-server=utf8_general_ci The character set defines how records can be alphanumerically ordered (or grouped, sorted, filtered, indexed). The list of supported languages is determined by the character set available at the server level. Hence, the UTF-8 Unicode character set configuration is required as part of MySQL configuration. To specify character settings at MySQL configuration time: For MySQL Version 5.7, see https://dev.mysql.com/doc/refman/5.7/en/charset-applications.html MySQL Configuration for UTF-8mb4 Unicode character set for MySQL 8.0 Version Add the following code to the my.cnf file, located in the MySQL Client: default-character-set=utf8mb4 Add the following code to the my.cnf file, located in MySQL Server: character-set-server=utf8mb4 collation-server=utf8mb4_0900_ai_ci The character set defines how records can be alphanumerically ordered (or grouped, sorted, filtered, indexed). The list of supported languages is determined by the character set available at the server level. Hence, the UTF-8 Unicode character set configuration is required as part of MySQL configuration. Note: If user does not specific in my.cnf or my.ini file then default MySQL 8 character set and collation are utf8mb4 and utf8mb4_0900_ai_ci taken by server. To specify character settings at MySQL configuration time: For MySQL Version 8.0, see http://dev.mysql.com/doc/refman//8.0/en/charset-applications.html max_allowed_packet Configuration Add max_allowed_packet = 64M to my.cnf or my.ini For MySQL Version 5.7, see https://dev.mysql.com/doc/refman/5.7/en/charset-applications.html For MySQL Version 8.0, see https://dev.mysql.com/doc/refman/8.0/en/charset-applications.html Restart the MySQL server to implement the changes

regexp_time_limit Configuration

The regular expression limit is expressed as the maximum permitted number of steps performed by the match engine, and thus affects execution time only indirectly. It is defined in milliseconds.

• Add regexp_time_limit=1024 to my.cnf or my.ini

For MySQL Version 5.7, see https://dev.mysql.com/doc/refman/5.7/en/charset-applications.html

For MySQL Version 8.0, see https://dev.mysql.com/doc/refman/8.0/en/charset-applications.html

• Restart the MySQL server to implement the changes

Populate the Timezone Tables

The platform uses MySQL's timezone tables for timezone conversions. These tables are not automatically populated when MySQL is installed, so it necessary to do so after installation.

Run the following program to initialize the MySQL timezone tables:

mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root mysql

where /usr/share/zoneinfo is the standard Linux location for the time zone files. (Your system may differ.)

For MySQL Version 5.7, see https://dev.mysql.com/doc/refman/5.7/en/mysql-tzinfo-to-sql.html

For MySQL Version 8.0, see https://dev.mysql.com/doc/refman/8.0/en/mysql-tzinfo-to-sql.html

Configuring MySQL Version 5.7 root password

1. Start the mysql service using the command: service mysqld start
2. Execute mysql_secure_installation script
   A prompt appears to input the root password.
   Info: To get temporary root password for MySQL Version 5.7 Community edition, see /root/.mysql_secret file.
   For Commercial installation temporary password will be generated at at /var/log/mysqld.log.
   Note: MySQL user password should contain at least one special character.