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Percona Software for MySQL Documentation

ProxySQL 2.6.2 and ProxySQL admin tools (2024-04-18)

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ProxySQL is a high-performance proxy for MySQL and MySQL-compatible database servers such as Percona Server for MySQL and MariaDB. It acts as an intermediary for client requests seeking resources from the database. ProxySQL was created for the database administrator to solve complex replication topology issues.

You can download the original ProxySQL from GitHub. The ProxySQL documentation provides information on installing and running ProxySQL.

The ProxySQL Admin (proxysql-admin) tool simplifies the configuration of Percona XtraDB Cluster nodes with ProxySQL. ProxySQL Admin 1 requires custom Bash scripts to track the status of a Percona XtraDB Cluster. ProxySQL Admin 2 supports Percona XtraDB Cluster without custom scripts.

The ProxySQL 2 and pxc_scheduler_handler tool can automatically perform a failover due to node failures, service degradation, or maintenance. The pxc_scheduler_handler tool has different features and capabilities than ProxySQL admin. Do not use the options from one tool in the other tool. Mixing the options may cause unintended results.

Release highlights

Compared to the previous ProxySQL 2.5.5-1.2 release, this release includes all improvements and bug fixes available in ProxySQL 2.6.2.

In this release, we are skipping ProxySQL 2.6.0 and 2.6.1. We are releasing ProxySQL 2.6.2, which is the latest ProxySQL release. This decision ensures that you receive the most up-to-date features and improvements.

The improvements and bug fixes introduced by ProxySQL 2.6.2 and included in this release are:

  • Support for [caching_sha2_passwords] for frontend and backend connections. Setting the mysql-default_authentication_plugin to caching_sha2_passwords automatically enables SSL for frontend connections. Using this setting reduces the risk of unauthorized access and data breaches. The setting is compatible with MySQL 8.0 and above.

  • Added new SQLite3 functions to support password management.

  • New feature mysql_servers_ssl_params - controls the SSL parameters in a per-host basis.

  • Added mysql-default_authentication_plugin - controls which authentication method is sent to the client in the Initial Handshake packet.

  • Improved LDAP support with the LDAP Plugin. The admin--checksum_ldap_variables global variable enables LDAP variables to be synchronized by ProxySQL Cluster if the LSAP Plugin is enabled.

  • Deprecated admin-hash_passwords - A user can store the passwords in clear text or with a hashing method, depending on the user’s preference.

For more information on these items and other changes, see the ProxySQL 2.6.2 release notes.

Bug fixes

PSQLADM-511: When using proxysql-admin, syncusers stalls when adding 1000 or more DB users.

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Last update: 2024-11-20