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Percona XtraDB Cluster 8.0 New Feature: wsrep_sst_auth Removal
The problem In PXC 5.6 and 5.7, when using xtrabackup-v2 as the SST method, the DBA must create a user with the appropriate privileges for use by Percona XtraBackup (PXB). The username and password of...
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Help Drive the Future of Percona XtraDB Cluster
Percona is happy to announce the experimental release of Percona XtraDB Cluster 8.0. This is a major step for tuning Percona XtraDB Cluster to be more cloud- and user-friendly. This is the second...
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Replication Between Two Percona XtraDB Clusters, GTIDs and Schema Changes
I got this question on the “How to Avoid Pitfalls in Schema Upgrade with Percona XtraDB Cluster (PXC)” webinar and wanted to answer it in a separate post. Will RSU have an effect on GTID consistency if...
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Various Ways to Perform Schema Upgrades with Percona XtraDB Cluster
Schema changes are the big challenges in Galera replication. So, it is recommended to understand the schema changes operation for everyone who uses the Percona XtraDB Cluster (PXB)/Galera clusters. In...
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CVE-2020-15180 – Affects Percona XtraDB Cluster
Galera replication technology, a key component of Percona XtraDB Cluster, suffered from a remote code execution vulnerability. Percona has been working with the vendor since early September on this...
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Inconsistent Voting in Percona XtraDB Cluster
AKA Cluster Error Voting… What is Cluster Error Voting (CEV)? “Cluster Error Voting is a new feature implemented by Alexey Yurchenko, and it is a protocol for nodes to decide how the cluster will react...
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A Look Into Percona XtraDB Cluster Non-Blocking Operation for Online Schema...
Percona XtraDB Cluster 8.0.25 (PXC) has introduced a new option to perform online schema modifications: NBO (Non-Blocking Operation). When using PXC, the cluster relies on the wsrep_OSU_method...
View ArticleConsequences of Forcing Bootstrap on Percona XtraDB Cluster
Recently, I was working on a very unfortunate case that revolved around diverging clusters, data loss, missing important log errors, and forcing commands on Percona XtraDB Cluster (PXC). Even though...
View ArticleHow Missing Primary Keys Break Your Galera Cluster
Any Galera documentation about limitations will state that tables must have primary keys. They state that DELETEs are unsupported and other DMLs could have unwanted side-effects such as inconsistent...
View ArticlePercona XtraDB Cluster: Our Commitment to Open Source High Availability
At Percona, we’ve always been dedicated to providing robust, open source high availability solutions that meet our users’ evolving needs. Percona XtraDB Cluster (PXC) stands as a testament to this...
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