System resource monitoring

sysstat | sysstat-ops | sysstat-graph

   *    *  ()   *   *
*        * /\         *
      *   /i\\    *  *
    *     o/\\  *      *
 *       ///\i\    *
     *   /*/o\\  *    *
   *    /i//\*\      *
    /o/*\\i\   *
  *    //i//o\\\\     *
    * /*////\\\\i\*
 *    //o//i\\*\\\   *
   * /i///*/\\\\\o\   *
  *    *   ||     * jrei

Install

ubuntu

apt install sysstat

systemctl status sysstat.service
# ubuntu20: enabled but not started/exited

systemctl restart sysstat.service

enable the unattended mode

mv -i /etc/default/sysstat /etc/default/sysstat.dist
echo ENABLED=true > /etc/default/sysstat

find /etc/cron* | grep sysstat
cat /etc/cron.d/sysstat
cat /etc/cron.daily/sysstat

slackware

slackpkg search sysstat
slackpkg install sysstat
ls -lF /etc/rc.d/rc.sysstat
/etc/rc.d/rc.sysstat restart
ls -lF /usr/lib64/sa/sa1
ls -lF /usr/lib64/sa/sa2

crontab -e

*/5 * * * * /usr/lib64/sa/sa1 1 1
59 02 * * * /usr/lib64/sa/sa2 -A
00 03 * * * /usr/lib64/sa/sa1 --rotate iso
# /root/sysstat-graphs.bash

Setup

tune the unattended mode, we don’t need inode nor space usage (XALL), we only want performance metrics

mv -i /etc/sysstat/sysstat /etc/sysstat/sysstat.dist
grep -vE '^#|^$' /etc/sysstat/sysstat.dist > /etc/sysstat/sysstat
vi /etc/sysstat/sysstat

#SADC_OPTIONS="-S DISK"
SADC_OPTIONS="-S ALL"

Ready to go

    sar -V

see sysstat-ops

Resources

install

https://github.com/sysstat/sysstat/tags

http://sebastien.godard.pagesperso-orange.fr/documentation.html

setup

linux server administration/sar https://en.wikiversity.org/wiki/Linux_server_administration/sar

slackware

https://englanders.us/~jason/howtos/?howto=sysstat

moar

Linux server administration/atop https://en.wikiversity.org/wiki/Linux_server_administration/atop