This blog covers INI vs Staging configurations for Secure Shell.
SSH Differences Between Staging and INI Configuration Methods
May 07, 2019
Tungsten University, Geographic Distribution and Geo-Scale
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Tungsten University
Tungsten University
How to Integrate Tungsten Clustering Monitoring Tools with PagerDuty Alerts
In this blog post we will discuss how to best integrate various Continuent-bundled cluster monitoring solutions with PagerDuty (pagerduty.com), a popular alerting service.
Apr 23, 2019
Tungsten University, Database Administration, Monitoring and Observability, Native, Performance
Why Does a MySQL / MariaDB Cluster Require an Odd Number of Nodes?
When deploying Tungsten Clustering for MySQL / MariaDB / Percona Server, we always recommend an odd number of Manager nodes in each cluster. Let's take a look at how having an odd number of Managers helps keep a Tungsten Cluster functioning and avoids data corruption scenarios (i.e. "split brain").
Dec 11, 2018
Tungsten University, Database Administration, Intelligent Proxy, Native, Zero Downtime Maintenance
Understanding THL, Events and Storage: Part 1
When Tungsten Replicator extracts data, the information that has been extracted is written down into the Tungsten History Log, or THL.
Dec 07, 2018
Tungsten University
Keeping a Consistent View of the Cluster
You already know about the Tungsten Connector which is the "secret sauce" that routes your application database traffic to the appropriate MySQL data source of your cluster. Have you ever wondered how the Connector keeps track of the cluster configuration? How it always knows which host is the master (or masters in a Composite Multimaster topology), and which are slaves?
Nov 26, 2018
Tungsten University, Intelligent Proxy
No-Downtime Cluster Software Upgrades for MySQL / MariaDB / Percona Server
One important way to protect your MySQL / MariaDB / Percona Server data is to keep your Tungsten Clustering software up-to-date; but how can you achieve this with zero-downtime?
Oct 23, 2018
Tungsten University, Database Administration, Zero Downtime Maintenance
Picking a MySQL Clustering Deployment Method: Staging versus INI
Learn about the two different methods for installing, updating and upgrading Tungsten Clustering software for MySQL / MariaDB / Percona Server.
Oct 18, 2018
Tungsten University, Deployment, Database Administration, Native
MySQL Cluster Performance Validation via Load Testing
Your MySQL database cluster contains your most business-critical data; in this post, we discuss how to ensure proper performance under load.
Oct 16, 2018
Tungsten University, Performance
Essential MySQL Cluster Monitoring Using Nagios and NRPE
This post covers some standard Nagios checks that would keep your MySQL / MariaDB / Percona Server cluster nodes healthy.
Oct 11, 2018
Tungsten University, Cluster Management, Database Administration, Monitoring and Observability
Global Multi-Primary MySQL Cluster Monitoring Using Nagios and NRPE
A robust monitoring setup is essential for cluster health and viability - if your replicator goes offline and you do not know about it, then that Replica becomes effectively useless because it has stale data. This means keeping a close watch on the health of the MySQL / MariaDB / Percona Server database nodes from many perspectives, from ensuring sufficient disk space to testing that replication traffic is flowing.
Oct 02, 2018
Tungsten University, Geographic Distribution and Geo-Scale, Monitoring and Observability
Mastering Tungsten Replicator Series: Tasty THL Tips - unsafe_for_block_commit
The Tungsten Replicator is an extraordinarily powerful and flexible tool capable of moving vast volumes of data from source to target.
In this blog post we will discuss one specific aspect of the THL (Transaction History Log) - the METADATA unsafe_for_block_commit flag.
Sep 20, 2018
Tungsten University, Advanced Replication
MySQL / MariaDB Clustering with Tungsten: Failover Focus
In this blog post, we discuss failover concepts and administration.
Sep 14, 2018
Tungsten University, Intelligent Proxy