cat /proc/sys/vm/zone_reclaim_mode
cat /proc/sys/vm/min_free_kbytes
free -h
echo "vm.zone_reclaim_mode = 1" >> /etc/sysctl.conf
echo "vm.min_free_kbytes = 2048" >> /etc/sysctl.conf
sysctl -p
cat /etc/sysctl.conf 确认刚才的配置正确无误。

systemctl restart i2node
或者
service i2node restart