Author:
erics, July 16th, 2019
Tungsten Clustering provides high availability, disaster recovery, and a host of other benefits for MySQL / MariaDB / Percona Server databases. In this blog post we will explore some of the shell aliases I use every day to administer various Tungsten Clusters.
Categories: Mastering Tungsten Clustering, Monitor Tags: Aliases, bash, cli, Command, Command line, HA, High Availability, monitoring, mysql, Tungsten
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Author:
erics, May 24th, 2019
The Question Recently, a customer asked us: What is the meaning of this error message found in trepsvc.log? 2019/05/14 01:48:04.973 | mysql02.prod.example.com | [east – binlog-to-q-0] INFO pipeline.SingleThreadStageTask Performing rollback of possible partial transaction: seqno=(unavailable) Simple Overview The Skinny This message is an indication that we are dropping any uncommitted or incomplete data read from […]
Categories: Architecture, Mastering Tungsten Replicator, Multimaster, Multisite Tags: HA, High Availability, monitoring, mysql, nagios, NRPE
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Author:
erics, 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 […]
Categories: Architecture, CMM, Mastering Tungsten Clustering, MSMM, Multi Master, Multimaster, Multisite, Site, v6 Tags: cross, cross-site, HA, High Availability, monitoring, mysql, Replication
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Author:
erics, May 21st, 2019
The Question Recently, a customer asked us: Why would Tungsten Replicator be slow to apply to MySQL? The Answer Performance Tuning 101 When you run trepctl status and see: appliedLatency : 7332.394 like this on a slave, it is almost always due to the inability for the target database to keep up with the applier. […]
Categories: Architecture, Mastering Tungsten Replicator, Multimaster, Multisite Tags: HA, High Availability, monitoring, mysql, nagios, NRPE
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Author:
erics, 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 […]
Categories: Architecture, Mastering Tungsten Clustering, Multimaster, Multisite Tags: HA, High Availability, monitoring, mysql, nagios, NRPE
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Author:
erics, 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 […]
Categories: Architecture, Mastering Tungsten Clustering, Multimaster, Multisite Tags: HA, High Availability, monitoring, mysql, nagios, NRPE
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Author:
erics, October 30th, 2009
Just got my Nagios monitoring system to recognize each of my client’s website individually. I also started monitoring the secret client’s servers and sites – even added him into a new contact group for SMS-based notifications. Bought two new domain names: wespeakgeek.org and brainlog.org. I tried to get painlog.org but there was a problem with […]
Categories: Business, Personal, Technology, Wyzaerd Tags: monitoring, nagios, Wyzaerd
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