Showing entries 1 to 10 of 65
10 Older Entries »
Displaying posts with tag: pxc (reset)
CRITICAL UPDATE for Percona XtraDB Cluster users: 5.7.23-31.31.2 Is Now Available

To resolve a critical regression, Percona announces the release of Percona XtraDB Cluster 5.7.23-31.31.2 on October 2, 2018 Binaries are available from the downloads section or from our software repositories.

This release resolves a critical regression in Galera’s wsrep library and supersedes 5.7.23-31.31

Percona XtraDB Cluster 5.7.23-31.31.2 is now the current release, based on the following:

[Read more]
Percona XtraDB Cluster 5.7.23-31.31 Is Now Available

This release has been superseded by 5.7.23-31.31.2 after a critical regression was found. Please update to the latest release.

Percona is glad to announce the release of Percona XtraDB Cluster 5.7.23-31.31 on September 26, 2018. Binaries are available from the downloads section or from our software repositories.

Percona XtraDB Cluster 5.7.23-31.31 is now the current release, based on the following:

[Read more]
Percona XtraDB Cluster 5.6.41-28.28 Is Now Available

Percona announces the release of Percona XtraDB Cluster 5.6.41-28.28 (PXC) on September 18, 2018. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.6.41-28.28 is now the current release, based on the following:

Fixed Bugs

[Read more]
ProxySQL Series : Percona Cluster/MariaDB Cluster (Galera) Read-write Split

ProxySQL is the most preferred and is widely used for load-balancing MySQL workload, thanks to Rene Cannon & Team for the great tool, and kudos on the recent release of ProxySQL 1.4.10, with a lot of bug fixes. ProxySQL is simple in design, lightweight, highly efficient and feature rich, We have been working with ProxySQL in production for our client quite a sometime, we have also shared some of our encounters/experience and use cases in the below blogs.

[Read more]
Percona XtraDB Cluster 5.7.22-29.26 Is Now Available

Percona announces the release of Percona XtraDB Cluster 5.7.22-29.26 (PXC) on June 29, 2018. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.7.22-29.26 is now the current release, based on the following:

Deprecated

The following variables …

[Read more]
Percona XtraDB Cluster 5.6.40-26.25 Is Now Available

Percona announces the release of Percona XtraDB Cluster 5.6.40-26.25 (PXC) on June 20, 2018. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.6.40-26.25 is now the current release, based on the following:

All Percona software is open-source and free. …

[Read more]
PXC loves firewalls (and System Admins loves iptables)

Let them stay together.

In the last YEARS, I have seen quite often that users, when installing a product such as PXC, instead of spending five minutes to understand what to do just run

iptables -F

  and save.

In short, they remove any rules for their firewall.

With this post, I want to show you how easy it can be to do the right thing instead of putting your server at risk. I’ll show you how a slightly more complex setup like PXC (compared to MySQL), can be easily achieved without risky shortcuts.

iptables is the utility used to manage the chains of rules used by the Linux kernel firewall, which is your basic security tool.
Linux comes with a wonderful firewall built into the kernel. As an administrator, you can configure this firewall with interfaces like ipchains  — which we are not going to cover — and iptables, which we shall talk about.

iptables is …

[Read more]
MySQL Test Framework for Percona XtraDB Cluster

At my latest webinar “MySQL Test Framework (MTR) for Troubleshooting”, I received an interesting question about MTR test cases for Percona XtraDB Cluster (PXC). Particularly about testing SST and IST.

This post is intended to answer this question. It assumes you are familiar with MTR and can write tests for MySQL servers. If you are not, please watch the webinar recording first.

You can find example tests in any PXC tarball package. They are located in directories

mysql-test/suite/galera

 ,

mysql-test/suite/galera_3nodes

  and

mysql-test/suite/wsrep

 , though that last directory only contains a configuration file.

If you …

[Read more]
Fulfilled Tablespace Encryption (TDE) in Percona Cluster

Encryption is a very important form of security and It’s becoming a standard from a compliance perspective to ensure PCI, PII and HIPPA compliances. Encryption needs to be performed for Data at Rest, Data over Wire.

Data At Rest:

  • Until 5.6, To encrypt the MySQL data files, Only disk level encryption possible (Gazzang, Luks)
  • From 5.7.11 MySQL added a feature for tablespace encryption. Which encrypts only the …
[Read more]
Handling long duration SST(timeout) in PXC with systemd

In this blog post, We will be explaining about the timeouts in SST on systemd implementation which we faced recently in Percona XtraDB Cluster  during our Consulting with a client. State Snapshot Transfers (SST) refers to complete data sync from one of the nodes from the cluster to the joining node.

SST will happen for one or more reasons listed below.

  1. Initial sync to join a node to cluster.
  2. Node is out of cluster and lost its ability to join back due to data corruption or inconsistencies and also when the node went far behind the node, …
[Read more]
Showing entries 1 to 10 of 65
10 Older Entries »