shell获取服务器cpu、内存、磁盘性能信息

主要使用SAR命令（sysstat）：执行一次动态采样，获取对应资源的数据

拼接为json串，发送给server端

#!/bin/bash
host_id=1
#host_id=1
json="{\"host_id\":\"$host_id\",";
cpu=$(sar -u 1 1|awk 'END {print $3}')
json="$json\"cpu\":\"$cpu\","
memory=$(sar -r 1 1|awk 'END {print $8}')
json="$json\"memory\":\"$memory\","
n=0;
sign=1;
json="$json\"io\":["
for line in `sar -d -p 1 1|grep -E "秒|Average"|sed '1d'|awk '{print $2,$3,$8}'`
do
if [ $sign -eq 1 ] && [ $n -eq 0 ];then
json="$json{\"name\":\"$line\","
n=$((${n}+1))
elif [ $sign -eq 0 ] && [ $n -eq 0 ];then
json="$json,{\"name\":\"$line\","
n=$((${n}+1))
elif [ $sign -eq 0 ] && [ $n -eq 1 ];then
json="$json\"tps\":\"$line\","
n=$((${n}+1))
elif [ $sign -eq 0 ] && [ $n -eq 2 ];then
json="$json\"await\":\"$line\"}"
n=0
fi
sign=0;
done
json="$json]}"

##
curl -H "Content-Type: application/json" -X POST --data "$json" http://10.50.16.201:8090/interface/gethostper

展示：