#!/bin/bash
TOTAL=$(free -g | grep Mem | awk '{print $2}')
USED=$(free -g | grep Mem | awk '{print $3}')
PERCENTAGE=$((USED * 100 / TOTAL))

RES=70

if [[ "$PERCENTAGE" -ge "$RES" ]]; then
	echo "内存告警,当前使用率: ${PERCENTAGE}%"
	redis-cli -a $1 -n 4 KEYS "cache*" | xargs redis-cli -a $1 -n 4 DEL
	echo "清理Redis内存完毕,当前使用率: ${PERCENTAGE}%"
else
	echo "内存小于"$RES"%,处于健康范围: ${PERCENTAGE}%"
fi