一鍵查看服務器利用率

背景：web訪問過慢，服務器內存搞
cpu 60%
內存 利用率
硬盤 利用率
TCP鏈接狀態

#!/bin/bash
function cpu(){

    util=$(vmstat | awk '{if(NR==3)print $13+$14}')
    iowait=$(vmstat | awk '{if(NR==3)print $16}')
    echo "CPU -使用率：${util}% ,等待磁盤IO相應使用率：${iowait}:${iowait}%"

}
function memory (){

    total=`free -m |awk '{if(NR==2)printf "%.1f",$2/1024}'`
    used=`free -m |awk '{if(NR==2) printf "%.1f",($2-$NF)/1024}'`
    available=`free -m |awk '{if(NR==2) printf "%.1f",$NF/1024}'`
    echo "內存 - 總大小: ${total}G , 使用: ${used}G , 剩餘: ${available}G"
}
disk(){

    fs=$(df -h |awk '/^\/dev/{print $1}')
    for p in $fs; do
        mounted=$(df -h |awk '$1=="'$p'"{print $NF}')
        size=$(df -h |awk '$1=="'$p'"{print $2}')
        used=$(df -h |awk '$1=="'$p'"{print $3}')
        used_percent=$(df -h |awk '$1=="'$p'"{print $5}')
        echo "硬盤 - 掛載點: $mounted , 總大小: $size , 使用: $used , 使用率: $used_percent"
    done

}
function tcp_status() {
    summary=$(ss -antp |awk '{status[$1]++}END{for(i in status) printf i":"status[i]" "}')
    echo "TCP鏈接狀態 - $summary"
}
cpu
memory
disk
tcp_status