In this blog, we’ll look at different MySQL high availability options. The dynamic MySQL ecosystem is rapidly evolving many technologies built around MySQL. This is especially true for the technologies involved with the high availability (HA) aspects of MySQL. When I joined Percona back in 2009, some of these HA technologies were very popular – […]
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This blog post discusses managing replication with Percona XtraDB Cluster. Recently a customer asked me to setup replication between two distinct Percona XtraDB Clusters located in geographically separate data centers. The customer goal was to use one of the clusters only in case of disaster recovery. They tried extending the cluster, but because of the […]
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This post discusses how XtraDB Cluster and Ceph are a good match, and how their combination allows for faster SST and a smaller disk footprint. My last post was an introduction to Red Hat’s Ceph. As interesting and useful as it was, it wasn’t a practical example. Like most of the readers, I learn about […]
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Over the last year, the Ceph world drew me in. Partly because of my taste for distributed systems, but also because I think Ceph represents a great opportunity for MySQL specifically and databases in general. The shift from local storage to distributed storage is similar to the shift from bare disks host configuration to LVM-managed […]
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Recently, I happened to have an onsite engagement and the goal of the engagement was to move a database service to RDS Aurora. Like probably most of you, I knew the service by name but I couldn’t say much about it, so, I Googled, I listened to talks and I read about it. Now that […]
Read MoreIMPORTANT: DON’T TRY THIS IN PRODUCTION. As demonstrated by Marko (see comments), it may corrupt your data. In a post, written a few months ago, I found that using EXT4 transactions with the “data=journal” mount option, improves the write performance significantly, by 55%, without putting data at risk. Many people commented on the post mentioning […]
Read MoreEver since MySQL replication has existed, people have dreamed of a good solution to automatically split read from write operations, sending the writes to the MySQL master and load balancing the reads over a set of MySQL slaves. While if at first it seems easy to solve, the reality is far more complex. First, the […]
Read MoreI’ll have the pleasure to present, next Wednesday, September 17 at 10 a.m. PDT (1 p.m. EDT) a webinar titled “OpenStack: A MySQL DBA Perspective.” Everyone is invited. The webinar will be divided into two parts. The first part will cover how MySQL can be used by the OpenStack infrastructure including the expected load, high-availability […]
Read MoreLike you all may know, OpenStack is currently one of the coolest open source projects, so I was thrilled when I was asked to manage the deployment of an OpenStack lab for internal Percona use. Starting from basically zero, I created tasks in our Jira and assigned them to a pool of volunteer consultants. As usual in […]
Read MorePercona Replication Manager (PRM) continues to evolve and improve, I want to introduce two new features: Slave resync and Async stop. Slave resync This behavior is for regular non-gtid replication. When a master crashes and is no longer available, how do we make sure all the slaves are in a consistent state. It is easy […]
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