Insight for DBAs

MongoDB: Impact-free Index Builds using Detached ReplicaSet Nodes

MongoDB Impact-free Index Builds

Creating an index on a MongoDB collection is simple; just run the command CreateIndex and that’s all there is to it. There are several index types available, and in a previous post, you can find the more important index types: MongoDB index types and explain().
The command is quite simple, but for MongoDB, building an […]

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MySQL: Disk Space Exhaustion for Implicit Temporary Tables

Implicit Temporary Tables

I was recently faced with a real issue about completely exhausting the disk space on MySQL. This was a serious issue because of the continuous outages of the service, as the customer had to constantly restart the server and wait for the next outage.
What was happening? In this article, I’m going to explain it […]

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Percona Server for MySQL Highlights – binlog_space_limit

Percona Server for MySQL

I think it is often confusing to compare upstream MySQL and Percona Server for MySQL, and some helpful information can be found in the introductory notes. But what does that really mean for an ordinary DBA, especially if none of the known big extra features are important in a particular use case?
In this article, […]

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Setting World-Writable File Permissions Prior to Preparing the Backup Can Break It

Setting World-Writable File Permissions

It’s bad practice to provide world-writable access to critical files in Linux, though we’ve seen time and time again that this is done to conveniently share files with other users, applications, or services. But with Xtrabackup, preparing backups could go wrong if the backup configuration has world-writable file permissions.
Say you performed a backup on […]

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Percona XtraDB Cluster 5.7.26-31.37 Is Now Available

Percona XtraDB Cluster 5.7

Percona is glad to announce the release of Percona XtraDB Cluster 5.7.26-31.37 on June 26, 2019. Binaries are available from the downloads section or from our software repositories.
Percona XtraDB Cluster 5.7.26-31.37 is now the current release, based on the following:

Percona Server for MySQL 5.7.26-29
Codership WSREP API release 5.7.25
Codership Galera library 3.26

All Percona software is open-source and […]

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