1 Install OpenIPMI and ipmitool

## run as root
yum install  OpenIPMI  ipmitool
systemctl enable ipmi 
systemctl start ipmi
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## key step: ipmitool sdr type temp"
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# add  `*/5 * * * * root /home/muyw/.soft/GBS/temp_monitor.sh` to /etc/crontab
systemctl restart crond