Tag: Replication

Replication

More P_S Instrumentation for Group Replication

In order to improve observability and manageability of MySQL Group Replication (GR), we enhanced its instrumentation in MySQL 8.0.4. With these goals in mind, we have extended the usage of Performance Schema (P_S) from this plugin to the included Group Communication System (GCS) module as well as its submodule eXtended Communications (XCom) which are responsible for all …

Clustering

How to convert galera node to async slave and vice-versa with MariaDB Galera Cluster

Recently, I was working with one of our customer and this is what their requirement as they want to automate this process for converting galera node to async slave and make async slave to galera node without shutting down any server. ———- I’ve tested locally with my galera cluster and it’s working smoothly. But with …

Replication

Replication Features in MySQL 8.0.4

MySQL 8 second release candidate is out (MySQL 8.0.4). Besides fixes to replication issues we have also delivered a couple of enhancements in this release. Let me quickly summarize them. Additional instrumentation for Group Replication (WL#9856). We have instrumented mutexes and condition synchronization objects on the group communication library. These are exposed as usual through …

Performance, Replication

Replication Performance Enhancements in MySQL 8

Although it feels like it was only yesterday that Oracle released version 5.7 of their acclaimed MySQL Community Server, version 8 is already available as a development milestone release (DMR). No, you didn’t sleep through a bunch of releases; MySQL is jumping several versions in its numbering due to 6.0 being dropped and 7.0 being …

Replication

Replication Will Start On AWS RDS for MariaDB 10.2

AWS recently announced the release of MariaDB 10.2 for RDS. One of customer needs this release for GIS indexing .The recent encounter on a Replication issue with RDS MariaDB 10.2 is briefed here . Problem Statement: After the upgrade of replicas to MariaDB 10.2 on RDS, Once replication is stopped manually through “call mysql.rds_stop_replication;” or …

Replication

Replication Filter Per Channel is Now Available in MySQL!

On the same day last year, I wrote a post about replication filters in MySQL Multi Source Replication and whether we can set the filters per replication channel or not (Bug #80843). My feature request – as well as some others – has been implemented in MySQL 8.0.1. Thanks Oracle for the implementation. (Full list of changes can …

Replication

MySQL High Available with MHA

Providing a suitable High Availability (HA) solution for each database system is one of the challenging tasks for a DBA and here we have to answer some questions like the following ones: What is the cost for that HA solution? Is it required to change the system structure or the DB design to use that …

Replication, Troubleshooting

Can we set Replication Filters per channel in Multi-Source Replication?

Multi-Source Replication is one of the awesome features in MySQL 5.7 which allows the slave to get the replication streams from multiple masters by having a replication channel for each master. But what about the replication filters? Can we set replication filters per channel in the multi-source replication? In brief, replication filtering is a way …