背景:web访问过慢,服务器内存搞
- cpu 60%
- 内存 利用率
- 硬盘 利用率
- TCP连接状态
脚本编写
#!/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}% ,等待磁盘IO相应使用率:${iowait}:${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 "内存 - 总大小: ${total}G , 使用: ${used}G , 剩余: ${available}G" } disk(){ fs=$(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 "硬盘 - 挂载点: $mounted , 总大小: $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连接状态 - $summary" } cpu memory disk tcp_status