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Displaying posts with tag: plugins (reset)
Data Masking in MySQL

If you’re here, that probably means you’re about to acquire some sensitive data to take care of. Or that you’ve already acquired it and are protecting it, and you want to see how MySQL Enterprise Data Masking and De-Identification features can help you do it in an easier, better and more efficient manner.…

Percona Monitoring Plugins 1.1.8 Release Is Now Available

Percona announces the release of Percona Monitoring Plugins 1.1.8.

Changelog

  • Add MySQL 5.7 support
  • Changed a canary check to use timestamp.now() and return a timedelta.seconds
  • Remove an additional condition for the Dictionary memory allocated
  • Fixed a false-positive problem when the calculated delay was less than 0 and the -m was not set.
  • Fixed the problem where slaves would alert due to deadlocks on the master.
  • If using pt-heartbeat, get_slave_status was only called when the -s option is set to …
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MySQL 8.0.4 : New Default Authentication Plugin : caching_sha2_password

Starting with MySQL 8.0.4, we are changing the default authentication plugin for MySQL server from mysql_native_password to caching_sha2_password. Correspondingly, libmysqlclient will now use caching_sha2_password as the default authentication mechanism, too.

Why did we do it?

The advantage of mysql_native_password is that it support challenge-response mechanism which is very quick and does not require encrypted connection.…

Protecting MySQL Passwords With the sha256_password Plugin

Over the years, MySQL has used three different mechanisms for securing passwords both for storage and for transmission across networks. This blog post aims to provide a brief history of the various mechanisms and highlight reasons to migrate accounts to use the sha256_password mechanism introduced in MySQL Server 5.6.…

What Makes the MySQL Audit Plugin API Special?

Why Should I Be Reading This?

To better understand how the MySQL Server functions, how to monitor the relevant server events, and find out what’s new in MySQL 5.7.8.

What’s Special About the Audit Plugin API?

Picking the right API for your new plugin is probably the most important design decision a plugin author will need to make.…

MySQL Enterprise Audit : Parsing Audit Information From Log Files, Inserting Into MySQL Table

The MySQL Enterprise Audit plug-in is part of the MySQL Enterprise Edition (available through a paid license). Basically, Enterprise Audit tracks everything that is happening on your MySQL server, and can be used to protect/detect the misuse of information, and to meet popular compliance regulations including HIPAA, Sarbanes-Oxley, and the PCI Data Security Standard.

MySQL Enterprise Audit uses the open MySQL Audit API to enable standard, policy-based monitoring and logging of connection and query activity executed on specific MySQL servers. Designed to meet the …

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MySQL 5.7 Labs — Inserting, Updating, and Deleting Records via HTTP

In the MySQL Labs version of MySQL version 5.7, there is a new HTTP plugin. The HTTP plugin documentation from the labs site provides this information (from MySQL Labs):

The HTTP Plugin for MySQL adds HTTP(S) interfaces to MySQL. Clients can use the HTTP respectively HTTPS (SSL) protocol to query data stored in MySQL. The query language is SQL but other, simpler interfaces exist. All data is serialized as JSON. This version of MySQL Server HTTP Plugin is a Labs release, which means it’s at an early development stage. It contains several known bugs and limitation, and is meant primarily to give you a rough idea how this plugin will look some day. Likewise, the user API is anything but finalized. Be aware it will change in many respects.

In …

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Emulating roles with expanded proxy user support in 5.7.7

MySQL has provided support for proxy users since version 5.5, but the roles-like capabilities offered have been largely unnoticed until recently.  Part of that has been due to limitations on which types of accounts could leverage proxy user capabilities.  This changes with the release of MySQL Server 5.7.7 (Release Candidate), which includes support for proxy user mapping for the standard mysql_native_password and sha256_password authentication plugins.  This post will introduce the new functionality and explain how to leverage it to emulate certain features …

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Write Yourself a Query Rewrite Plugin: Part 2

In my last post I covered how to use the query rewrite framework to write your own pre-parse plugin. The interface is simplistic: a string goes in, a string comes out, and the rest is up to your plugin’s internal workings. It doesn’t interact that much with the server. Today I am going to show you the other type of plugins that rewrite queries, post-parse query rewrite plugins. This type is, out of necessity, more tightly coupled with the server; it operates on the internal data structures that make up the query’s parse tree.

Creating the Plugin

Declaring the plugin is similar to declaring a pre-parse plugin: you declare the plugin in the usual way but with the addition of a specific plugin descriptor for the post-parse query rewrite plugin type. This is a struct, as usual:

struct …
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Write Yourself a Query Rewrite Plugin: Part 1

With the query rewrite framework in the latest MySQL (Optimizer/InnoDB/Replication) labs release, you get the opportunity to author plugins that can rewrite queries. You can choose whether to rewrite the queries before and/or after parsing. Today I am going to walk you through how to write a pre-parse query rewrite plugin.

When would you want to use a pre-parse query rewrite plugin? The greatest benefit compared to post-parse rewrites — which I cover in a separate post — is the efficiency, especially the lack of overhead for those queries that are actually rewritten. Typical cases where you may want to write a pre-parse plugin are:

  • When you want to remove certain specific clauses from queries. For example, perhaps you want to remove all ENGINE …
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