On 05/07/2013 03:20 PM, Mike Lowe wrote:
You've learned on of the three computer science facts you need to know about distributed systems, and I'm glad I could pass something on:
1. Consistent, Available, Distributed - pick any two
To some degree of Consistent, Available and Distributed. :-P
2. To completely guard against k failures where you don't know which one failed just by looking you need 2k+1 redundant copies
3. Fault tolerant systems must all agree on what time it is
On May 7, 2013, at 6:29 AM, Varun Chandramouli <varun.c37@xxxxxxxxx> wrote:
Hi All,
Thanks for the replies. I started the ntp daemon and the warnings as well as the crashes seem to have gone. This is the first time I set up a cluster (of physical machines), and was unaware of the need to synchronize the clocks. Probably should have googled it more :). Pardon my ignorance.
Thanks Again,
Varun
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Joao Eduardo Luis
Software Engineer | http://inktank.com | http://ceph.com
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