Tag: MySQL

New MySQL File System Vulnerabilities

Get insight into the recent MySQL file system vulnerabilities.

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Using ProxySQL to validate MySQL Updates

Derek Downey provides a quick look at ProxySQL.

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Enabling InnoDB Compression

Learn how to recover some disk space by enabling InnoDB compression.

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Using gh-ost for online schema changes

The pt-online-schema-change tool has been a workhorse for years, allowing MySQL DBAs to alter tables with minimal impact to application workload, and before MySQL had native online alter capabilities. Although consistently grateful for the tool’s existence, I never liked the…

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Rejoining a Node to MySQL’s InnoDB Cluster

Derek Downey, OSDB Practice Advocate at Pythian, gives you the steps to setup and deploy a local sandbox Cluster as well as the steps to kill a node.

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Auditing MySQL Users With McAfee Plugin

Ivan Groenewold, MySQL Database Consultant at Pythian, discusses auditing MySQL users with the McAffee plugin.

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Ansible Dependencies for Docker Containers

I recently had the opportunity to test out Ansible’s ability to interact with docker containers. Some might ask why we would want Ansible to connect to running containers. Afterall, we can build the containers to our liking using ansible-container, or…

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Exposing Innodb Internals via System Variables: Part 5, Consistency / Statistics handling

In part 5 of this series, Peter Sylvester, Lead Database Consultant at Pythian, looks at variables that relate to enforcing data consistency, and how index statistics are handled and stored.

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Exposing Innodb Internals via System Variables: Part 4, Concurrency

In part 4 of this series, Peter Sylvester, Lead Database Consultant at Pythian, looks at the mechanics that impact CPU resourcing and how InnoDB handles concurrent threads.

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Exposing Innodb Internals via System Variables: Part 3, I/O (Table data)

In part 3 of this series, Peter Sylvester, Lead Database Consultant at Pythian, continues looking at I/O, specifically the mechanics on how data gets written to table files.

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