MySQL Error: Client requested master to start replication from impossible position

Error reading packet from server: Client requested master to start replication from impossible position (server_errno=1236) Got fatal error 1236: 'Client requested master to start replication from impossible position' from master when reading data from binary log    This might happen, for example, if there is a power failure on the master and it is unable to write out all the transactions...

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RAID 0, RAID 1, RAID 5, RAID 10 Explained with Diagrams

RAID stands for Redundant Array of Inexpensive (Independent) Disks. On most situations you will be using one of the following four levels of RAIDs. RAID 0 RAID 1 RAID 5 RAID 10 (also known as RAID 1+0) This article explains the main difference between these raid levels along with an easy to understand diagram. In all the diagrams mentioned below: A, B,...

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Install RRDTool on Red Hat Enterprise Linux

RRD is the Acronym for Round Robin Database. RRD is a system to store and display time-series data (i.e. network bandwidth, machine-room temperature, server load average). It stores the data in a very compact way that will not expand over time, and it presents useful graphs by processing the data to enforce a certain data density. It can be used either via simple wrapper scripts (from shell or...

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