Readable MultiAZ Cluster with AWS RDS MySQL under the hood.

Amazon Web Services (AWS) very recently(March 02, 2022) announced the GA of its new RDS feature “Readable standby with Multi-AZ deployments” for MySQL. Yes !! you heard it right you can now use the standby instances created with Multi-AZ deployments for failover as well as for Read-scaling starting with version 8.0.26 and later for MySQL … Continue reading Readable MultiAZ Cluster with AWS RDS MySQL under the hood.

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

6 Step MySQL Point-In-Time recovery on AWS RDS

Recently one of our customers ran into an issue, wherein a bad actor(code) from the application had made the wrong update to 16 M records of a critical table in the database, causing the entire production process to go down. The application Team was able to find the bad actor and block it, our Remote … Continue reading 6 Step MySQL Point-In-Time recovery on AWS RDS

XtraDB Cluster troubleshooting a rejected node.

PXC(Percona XtraDB Cluster), aka Galera cluster, is one of my favorite clustering technology for MySQL that comes with real Multi-master capabilities, Write-set based nearly real-time replication and many more features. I could proudly say that Mydbops is one of the very few companies who have been supporting mission-critical clusters and preaching PXC ie., Galera cluster … Continue reading XtraDB Cluster troubleshooting a rejected node.

ProxySQL Series : ProxySQL Native Cluster

ProxySQL supports a feature called clustering from version 1.4.2 .while planning for setting up a  cluster ensure to have a version greater than 1.4.2 ( latest is better) . This is still an experimental feature but works well. This blog would be a continuation of our proxysql series of blogs. MySQL replication Read-Write Split up … Continue reading ProxySQL Series : ProxySQL Native Cluster

Troubleshooting an OLAP system on InnoDB

As a part of Mydbops Consulting we have a below problem statement from one of our client. "We have a high powered server for reporting which in turn powers our internal dashboard for viewing the logistics status.Even with a high end hardware, we had a heavy CPU usage and which in turn triggers spikes in … Continue reading Troubleshooting an OLAP system on InnoDB

Setting up a High Availability for PMM

We have been working with PMM for quite a long time, we do most of the performance analysis with PMM for most of our clients. It also provides the flexibility that we have built our own custom dashboard. PMM has many advantages Easy to deploy (docker based) Flexible Customizable Query Analytics One-stop solution for MySQL,Mongo,ProxySQL … Continue reading Setting up a High Availability for PMM

Get the most IOPS out of your physical volumes using LVM.

Hope everyone aware about known about LVM(Logical Volume Manager) an extremely useful tool for handling the storage at various levels. LVM basically functions by layering abstractions on top of physical storage devices as mentioned below in the illustration. Below is a simple diagrammatic expression of LVM sda1 sdb1 (PV:s on partitions or whole disks) \ … Continue reading Get the most IOPS out of your physical volumes using LVM.

TaskMax limit affects MySQL connections

Recently we had been bitten by a Systemd limitation at the “Tasks” created per-unit ie., process. This includes both the kernel threads and user-space threads, with each thread counting individually. Am writing this blog as a reference for someone who might come across this limitation. We have been actively working on migration DB instances, from … Continue reading TaskMax limit affects MySQL connections

Hot Backup For MyRocks(Rocksdb) using Percona Xtrabackup

Xtrabackup now supports Hotbackup for Myrocks!! yes you heard me right, this is one of the most awaited features with xtrabackup. With the latest release of percona xtrabackup 8.0.6 this is enabled and is supported only for Percona Server version 8.0.15-6 or higher, you can see detailed released notes here. Myrocks is getting much of … Continue reading Hot Backup For MyRocks(Rocksdb) using Percona Xtrabackup