Clik here to view.
Percona XtraDB Cluster 5.5.39-25.11 is now available
Percona is glad to announce the new release of Percona XtraDB Cluster 5.5 on September 5th 2014. Binaries are available from downloads area or from our software repositories.Based on Percona Server...
View ArticleSyncing MySQL slave table with pt-online-schema-change
I recently encountered a situation in which after running Percona Toolkit’s pt-table-checksum on a customer system, 95% of the table on the MySQL master was different on the MySQL slave. Although this...
View ArticleClik here to view.
MySQL Replication: ‘Got fatal error 1236′ causes and cures
MySQL replication is a core process for maintaining multiple copies of data – and replication is a very important aspect in database administration. In order to synchronize data between master and...
View ArticleMySQL compression: Compressed and Uncompressed data size
MySQL has information_schema.tables that contain information such as “data_length” or “avg_row_length.” Documentation on this table however is quite poor, making an assumption that those fields are...
View ArticleHow to avoid hash collisions when using MySQL’s CRC32 function
Percona Toolkit’s pt-table-checksum performs an online replication consistency check by executing checksum queries on the master, which produces different results on replicas that are inconsistent...
View ArticleHow to setup a PXC cluster with GTIDs (and have async slaves replicating from...
This past week was marked by a series of personal findings related to the use of Global Transaction IDs (GTIDs) on Galera-based clusters such as Percona XtraDB Cluster (PXC). The main one being the...
View ArticleClik here to view.
5 free handy tools for monitoring and managing MySQL replication
MySQL Replication is very simple to set up. In this post I’ll discuss its importance and five handy tools for monitoring and managing MySQL replication.What is MySQL Replication? It’s the process of...
View ArticleChecking table definition consistency with mysqldiff
Data inconsistencies in replication environments are a pretty common. There are lots of posts that explain how to fix those using pt-table-checksum and pt-table-sync. Usually we only care about the...
View ArticleMySQL replication primer with pt-table-checksum and pt-table-sync
MySQL replication is a process that allows you to easily maintain multiple copies of MySQL data by having them copied automatically from a master to a slave database.It’s essential to make sure the...
View ArticleClik here to view.
ObjectRocket’s David Murphy talks about MongoDB, Percona Live Amsterdam
Say hello to David Murphy, lead DBA and MongoDB Master at ObjectRocket (a Rackspace company). David works on sharding, tool building, very large-scale issues and high-performance MongoDB architecture....
View Article