Category Archives: Architecture

Architecture.

Setting up Galera Arbitrator on Ubuntu

Galera Arbitrator: The recommended deployment of Galera Cluster is that you use a minimum of three instances. Three nodes, three datacenters and so on. In the event that the expense of adding resources, such as a third datacenter, is too … Continue reading

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Repair MySQL Replication

Repair MySQL Replication: If you have set up MySQL replication, you probably know this problem: sometimes there are invalid MySQL queries which cause the replication to not work anymore. 1) Check log entry, #tail -n100 /var/log/mysql/error.log 131127 18:10:46 [ERROR] Slave … Continue reading

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Setup MySQL Master Slave Replication

Setup MySQL Master Slave Replication : Replication enables data from one MySQL database server (the master) to be replicated to one or more MySQL database servers (the slaves). Replication is asynchronous – slaves need not be connected permanently to receive … Continue reading

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AWS tools s3cmd and s3fs

AWS tools s3cmd and s3fs : s3cmd : command line S3 client Amazon S3 is a reasonably priced data storage service. Ideal for off-site backups, archiving and other data storage needs. It is generally more reliable than your regular web … Continue reading

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