install sysstat & get all sar logs which give u the approx all the os level log & any performance issue occurred like disk read write/cpu utilization memory utilization
1. CPU utilization
2. Memory paging and its utilization
3. Network I/O, and transfer statistics
4. Process creation activity
5. All block devices activity
6. Interrupts/sec etc.
yum install sysstat*
# run system activity accounting tool every 10 minutes
*/10 * * * * root /usr/lib64/sa/sa1 1 1
# generate a daily summary of process accounting at 23:53
53 23 * * * root /usr/lib64/sa/sa2 -A
sar -n "memory"
sar -q "run queue/cpu Load"
sar -u "CPU utilization "
man sar "more on"
unzip the ksar
take a report from the server in which the problem occur on "24dated"
LC_ALL=C sar -A -f /var/log/sa/sa24 > /tmp/sardata.txt
take that sardate.txt into the server where u unzip that zip file of ksar now run the ./run.sh after changing the permission chmod a+x run.sh & now give the path of the sardata.txt file & save it as pdf so that you get the proper report which can share & also justify the any error occurred happen at that period related to the health/performance