I am running a cluster with 7 nodes under version 5.1.1.
I've upgraded this cluster from old 2.x version 20 days before and he was running ok until today.
After today 2pm all the requests made to the any node of the cluster are delaying a lot.
I checked if i have a problem with I/O and Network throughput, but it's not the case.
I disabled some monitoring agents to isolate the problem.
I collected some logs from my current master node and uploaded to my google drive.
My cluster log: https://drive.google.com/open?id=0B2uG9PA8RQJGX0xqNmJCUEM1Snc
My cluster deprecation log: https://drive.google.com/open?id=0B2uG9PA8RQJGcEh0R1JDTG9vaU0
I'm not sure if the cluster upgrade caused the problem or some another factor that i can't see right now.
May someone give me a light about what could be happening?