Entries Categorized as 'Mastering Tungsten Clustering'

What on Earth is a Split-Brain Scenario in a MySQL Database Cluster?

Author: , June 24th, 2019

In this blog post we will define what a split-brain scenario means in a MySQL database cluster, and then explore how a Tungsten MySQL database cluster reacts to a split-brain situation.

Configuring the Tungsten Connector for PCI Compliance

Author: , June 18th, 2019

This blog is about configuring Tungsten for PCI compliance.

Why is My Java Application Freezing Under Heavy I/O Load?

Author: , June 17th, 2019

Latency-sensitive applications running in Java sometimes experience unacceptable delays under heavy I/O load. This blog discusses why this problem occurs and what to do about it for applications running Tungsten Clustering for MySQL.

Using Keep-Alives To Ensure Long-Running MySQL & MariaDB Sessions Stay Connected

Author: , June 14th, 2019

Overview The Skinny In this blog post we will discuss how to use the Tungsten Connector keep-alive feature to ensure long-running MySQL & MariaDB/Percona Server client sessions stay connected in a Tungsten Cluster. Agenda What’s Here? Briefly explore how the Tungsten Connector works Describe the Connector keep-alives – what are they and why do we […]

Understanding Cross-Site Replication in a Tungsten Composite Multi-Master Cluster for MySQL, MariaDB and Percona Server

Author: , May 22nd, 2019

Overview The Skinny In this blog post we will discuss how the managed cross-site replication streams work in a Composite Multi-Master Tungsten Cluster for MySQL, MariaDB and Percona Server. Agenda What’s Here? Briefly explore how managed cross-site replication works in a Tungsten Composite Multi-Master Cluster Describe the reasons why the default design was chosen Explain […]

SSH Differences Between Staging and INI Configuration Methods

Author: , May 7th, 2019

The Question Recently, a customer asked us: If we move to using the INI configuration method instead of staging, would password-less SSH still be required? The Answer The answer is both “Yes” and “No” No, for installation and updates/upgrades specifically. Since INI-based configurations force the tpm command to act upon the local host only for […]

How to Integrate Tungsten Clustering Monitoring Tools with PagerDuty Alerts

Author: , April 23rd, 2019

Overview The Skinny 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. Agenda What’s Here? Briefly explore the bundled cluster monitoring tools Describe the procedure for establishing alerting via PagerDuty Examine some of the multiple monitoring tools included with the Continuent […]