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Live Migrations Using MySQL Replication

This is the seventh installment in the ‘Become a MySQL DBA’ blog series. Our previous posts in the DBA series include Database Upgrades, Replication Topology Changes, Schema Changes, High Availability, Backup & Restore, Monitoring & Trending.

How to Avoid SST When Adding a New Node to MySQL Galera Cluster

SST can be painful in some occasions, as it can block the donor node (with SST methods like mysqldump or rsync) and burden it when backing up the data and feeding it to the joiner. For a dataset of a few hundred gigabytes or more, the syncing process can take hours to complete - even if you have a fast network. It might be advisable to avoid e.g. when running in WAN environments with slower connects and limited bandwidth, or if you just want a very fast way of introducing a new node in your cluster.

Deploying MySQL Galera Cluster Using Vagrant

Vagrant is a system that allows you to easily create and move development environments from one machine to another. Simply define what type of VM you want in a file called Vagrantfile and then fire them up with a single command. It integrates well with virtual machine providers like VirtualBox, VMware and AWS. In this blog, we’ll show you how to expedite the deployment of your development environment using some Vagrant boxes we’ve put together.

Installing a Kubernetes Cluster with 3 Minions on CentOS 7 to Manage Pods and Services

Kubernetes is a system for managing containerized applications in a clustered environment. It provides basic mechanisms for deployment, maintenance and scaling of applications on public, private or hybrid setups. It also comes with self-healing features where containers can be auto provisioned, restarted or even replicated.

Deploying an Asynchronous Slave to MySQL Galera Cluster

Due to its synchronous nature, Galera performance can be limited by the slowest node in the cluster. So running heavy reporting queries or making frequent backups on one node, or putting a node across a slow WAN link to a remote data center might indirectly affect cluster performance. Combining Galera and asynchronous MySQL replication in the same setup, aka Hybrid Replication, can help. A slave is loosely coupled to the cluster, and will be able to handle a heavy load without affecting the performance of the cluster. The slave can also be a live copy of the Galera cluster for disaster recovery purposes.

How to Deploy and Configure MaxScale for SQL Load Balancing with Read-Write Split

There are two models of load balancing: transport and application layer. HAProxy is a great TCP load balancer, but it’s lack of SQL awareness effectively limits its ability to address certain scaling issues in distributed database environments. In the open source world, there’s been a few SQL-aware load balancers, namely MySQL Proxy, ProxySQL and MaxScale, but they all seemed to be in beta status and unfit for production use. So we were pretty excited when the MariaDB team released a GA version of MaxScale earlier this year. In this blog, we’ll have a look at MaxScale and see how it compares with HAProxy.

How to Cluster Atlassian Server Apps in Your Data Center - JIRA, Confluence, Stash with MySQL Galera Cluster

Atlassian apps are widely used by development teams to facilitate software development and collaboration. For larger teams who require enterprise-grade tools, you might want to host the applications in your own data center and cluster them for high availability and performance. 

How to Deploy High Availability CloudStack/CloudPlatform with MariaDB Galera Cluster

Apache CloudStack is a turnkey orchestration platform to deliver IaaS clouds. As a cloud infrastructure scales to hundreds or thousands of servers, with production environments supporting multiple applications and services, high availability becomes a key requirement. Just as for OpenStack, it is possible to deploy the CloudStack management server in a multi-node installation. Since the management server uses a MySQL database to store the state of all its objects, the database could become a single point of failure. The CloudStack manual recommends MySQL replication with manual failover in the event of database loss. We believe there is a better way.

High Availability File Sync and Share - Deploying ownCloud with Galera Cluster for MySQL and GlusterFS

Cloud storage is hot. Dropbox, Apple iCloud, Google Drive, Microsoft SkyDrive and Amazon Cloud Drive all offer cloud sharing platforms where you can store documents in the cloud and access them from all your devices. For enterprises who require full control, ownCloud is an open source solution that allows files to be stored on-premises and/or a backend cloud. 

Chef Cookbooks for ClusterControl - Management and Monitoring for Your Database Clusters

If you are automating your infrastructure deployments with Chef, then read on. We are glad to announce the availability of a Chef cookbook for ClusterControl. This cookbook replaces previous cookbooks we released for ClusterControl and Galera Cluster. For those using Puppet, please have a look at our Puppet module for ClusterControl.