Install SysStat to enable system monitoring.
[1] Install SysStat.
[root@dlp ~]# yum -y install sysstat
[root@dlp ~]# systemctl start sysstat
[root@dlp ~]# systemctl enable sysstat [2] Logging is executed by cron's setting like follows.
* Logs are stored in
/var/log/sa/sa** per 10 minutes with
/usr/lib64/sa/sa1 command.
* The Statics of a day is generated at 23:53 every day to
/var/log/sa/sar** with
/usr/lib64/sa/sa2 command.
[root@dlp ~]# cat /etc/cron.d/sysstat
# Run system activity accounting tool every 10 minutes
*/10 * * * * root /usr/lib64/sa/sa1 1 1
# 0 * * * * root /usr/lib64/sa/sa1 600 6 &
# Generate a daily summary of process accounting at 23:53
53 23 * * * root /usr/lib64/sa/sa2 -A
[3] If you'd like to change some settings of SysStat, the configuration file is located like follows.
[root@dlp ~]# vi /etc/sysconfig/sysstat#
sysstat-10.1.5 configuration file.
# How long to keep log files (in days).
# If value is greater than 28, then log files are kept in
# multiple directories, one for each month.
HISTORY=28
# Compress (using gzip or bzip2) sa and sar files older than (in days):
COMPRESSAFTER=31
# Parameters for the system activity data collector (see sadc manual page)
# which are used for the generation of log files.
# *note
SADC_OPTIONS="-S DISK"
# *note : valid options
INT ⇒ System Interrupts
DISK ⇒ Block Devices
SNMP ⇒ SNMP statistics
IPV6 ⇒ IPv6 statistics
POWER ⇒ Power Management statistics
ALL ⇒ All of the above
XDISK ⇒ DISK + Partition statistics
XALL ⇒ All of the above (ALL + XDISK)
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