Saturday, August 17, 2013

Exercise 5 (Part III): Investigation/Experiment on Heartbeat

For the first part of the investigation, we needed to repeat the process we did on our last exercise to set up heartbeat on two servers. When we remove the LAN cable on the primary server, here is what happen/the result when we used ping to test the set up.




Considering the first time result on each test, the average delay before the server responds is 0.7493 ms.

After getting the result for the first part of the investigation, we needed to add a server with heartbeat to be used for the second part. We had two secondary servers this time. When the LAN of the primary server was removed, one of the two secondary servers took over. The delay of the secondary server is  1.15ms.

When we removed the LAN of the slave server which responded earlier, the other/remaining slave server took over.





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