Sar/SysStat Installation and configuration
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yum install sysstat
Then check the file /etc/cron.d/sysstat . It should be as given below :
# 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
Permission of this file should be 644, other wise you will get the following error in cron log.
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(*system*) BAD FILE MODE (/etc/cron.d/sysstat)
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Another possible error is,
Cannot open /var/log/sa/sa28: No such file or directory
This file will be automatically created after 10 minutes. For testing this, you can execute the following command, which will save the current details.
root /usr/lib64/sa/sa1 1 1
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