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Parallel supercomputers and computer clusters needs to use failover and Infiniband multipathing to provide non stop computing. InfiniBand is a switched fabric communications link primarily used in high-performance computing. Its features include quality of service and failover, and it is designed to be scalable. The InfiniBand architecture specification defines a connection between processor nodes and [...]
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From my mailbag:
We have 5 Dell server collocated running CentOS 4.x and 5.x server operating system. Sometime my file system (ext3) goes read-only. I’d like to know what could be causing such a problem?
My guess:
a) Hardware problem / hard disk problem, check harddisk for errors.
b) High disk I/O aka busy I/O retry error can [...]
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MySQL Proxy is a simple and new program that sits between your client and MySQL server(s) that can monitor, analyze or transform their communication. Its flexibility allows for a wide variety of use cases, including:
a) Load balancing
b) Failover
c) Query analysis
d) Query filtering and modification
e) and many more…
MySQL Proxy tutorial
Oreilly has published a nice tutorial using [...]
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