Enabling Autorecovery for the Tungsten Replicator

Author: , August 7th, 2019

The replicator is a critical piece of the Tungsten Clustering solution for MySQL / MariaDB, as well as its own stand-alone data replication product. Automatic recovery enables the replicator to go back online in the event of a transient failure. In this blog, we discuss how to enable Autorecovery.

Where are the logs for a Tungsten Cluster?

Author: , July 9th, 2019

Where are the logs for a Tungsten Cluster and which are the proper log files to monitor if I do a master role switch to another node?

What is the Best Way to Check the Health of a Tungsten Cluster Before a Switch?

Author: , June 26th, 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.

How To See MySQL Traffic Using tcpdump

Author: , March 22nd, 2016

Quick-and-dirty way: tcpdump -i eth0 -s 0 -l -X dst port 3306 NOTE: That option above is a dash-ELL which provides for unbuffered output. Maciej Dobrzanski posted the following script on the Percona site at https://www.percona.com/blog/2008/11/07/poor-mans-query-logging/, which I am reposting without permission because it is so good:

How To Use netcat and telnet for Simple Network Testing

Author: , January 27th, 2015

yum install nc SERVER-SIDE: host1 shell> echo hello | nc -l 3456 CLIENT-SIDE: host2 shell> nc host1 3456 hello ~or~ CLIENT-SIDE: yum install telnet host1 shell> telnet host2 {PORT}