Recently, while doing a test process to examine resource usage and the time required to alter the table using pt-osc, it leads to a loss of triggers even though the --preserve-triggers option is specified. I made the decision to recreate the identical circumstance so that everyone could see it. Test environment : OS: Amazon Linux … Continue reading pt-online-schema-change resulted in missing MySQL triggers ?
Category: MySQL tools
Beware of your Backup before upgrading MySQL 8.0.30
MySQL 8.0.30 was released on 26-07-2022. It has a good list of features. Generated Invisible Primary Key Dynamic Redo log Sizing Instruments to monitor group replication memory Support for Ubuntu 22.04 A most notable feature for Database Administrators and database reliability engineers is Dynamic redo logging. The more widely adopted open-source backup tool is Xtrabackup. … Continue reading Beware of your Backup before upgrading MySQL 8.0.30
MySQL Schema change With Skeema – Part 2 “Production use cases”
In the previous blog, we have gone through the Basic operation of the Skeema tool. In this blog, we will see the production use case of the Skeema tool. Selective schema setup :All (Global) servers :Selective server execution:Selective schema validation of production server :Concurrency and other notable options :Environment based Execution:Conclusion : Selective schema setup … Continue reading MySQL Schema change With Skeema – Part 2 “Production use cases”
Stream MySQL data with mydumper
Mydumper supports streaming of backups right from version 0.11.3 and the latest version Mydumper 0.12.3 it enabled its support for compressed streaming backup. This was the most awaited feature added to Mydumper, making it a more powerful tool for data migration to RDS or Cloud. If you are hearing mydumper for the first time, then … Continue reading Stream MySQL data with mydumper
MySQL time_zone and CPU Spike another performance troubleshooting
It was a clear day and traffic started to increase as we are in the biggest sale event of the year for one of our Managed services clients. This is one of the interesting troubleshooting let's dive in. Let me provide some background. We were running the Percona version of MySQL (5.7.30), on a 96 … Continue reading MySQL time_zone and CPU Spike another performance troubleshooting
Faster Load data outfile in MySQL
While exporting the table with MySQL native utility, we don't have any control on the process, and also there will be no progress update as well on the process completion. So when exporting the larger table will consume high resource utilization and also the disk space usage will also be high. MySQL shell utility will … Continue reading Faster Load data outfile in MySQL
Troubleshooting an unique key addition during pt-online-schema-change
We all tried various alternative methods for modifying the table structure, but pt-online-schema-change (pt-osc) is the most convenient and preferred method for performing the alter online. It has more granular control too. But it may lead to data loss if proper precautionary steps are not taken care of. In this blog, we are going to … Continue reading Troubleshooting an unique key addition during pt-online-schema-change
Replication Filters in MySQL an Overview
What are Replication Filters in MySQL? A replication filter is used to filter out the necessary databases and tables that will be replicated in the replica. The replication filter can be set either in my. cnf or the command line. The change made in those databases will be logged in binary log files. The filter … Continue reading Replication Filters in MySQL an Overview
Faster logical backup of a single table in MySQL.
Logical backup's are of great use in data migration across cloud environments and table level recoveries. The new Mysql shell 8.0.22 ,has introduced a couple of new utilities named util.dumpTable() and util.exportTable() to export individual tables from a MySQL. Prior to 8.0.22 it is not possible to make a backup of single table using MySQL … Continue reading Faster logical backup of a single table in MySQL.
Dockerizing MySQL step by step.
As a Database Engineer in Mydbops. We tend to solve multiple complex problems for our esteemed customers. To control the System resources and scale up /down based on needed we are evaluating Dockers and Kubernetes. Docker is a set of platform as a service products that uses OS-level virtualization to deliver software in packages called … Continue reading Dockerizing MySQL step by step.