Recently we had encountered a strange issue with replication and temp directory(tmpdir) change while working for one major client. All the servers under this were running with Percona flavor of MySQL versioned 5.6.38 hosted on a Debian 8(Jessie) The MySQL architecture setup is as follows one master with 5 direct slaves under it Through this … Continue reading Impact of “tmpdir” change in MySQL replication
Introduction - Recently i worked on a production issue for one of our client under support .They have a architecture of a three node Galera cluster with one asynchronous slave . Node1 - 188.8.131.52Node2 - 184.108.40.206Node3 - 220.127.116.11Replica - 18.104.22.168 Architecture - The slave(replica) was configured with node3 as replica master. Unfortunately the node 3 was … Continue reading How to Switch Replica Master of a non-GTID Slave in Percona Cluster ?
MySQL 8.0 has come with a list of new features for DBA's ,we will discuss the new feature in MySQL 8.0 which supports Descending index.Prior to MySQL 8.0 (i.e MySQL 5.6 and 5.7) creating desc index syntax was supported but desc keyword was ignored, Now in MySQL 8.0 release descending index is extended are supported. … Continue reading Descending index in MySQL 8.0