linux 系统监控脚本

1.对CPU的监控函数

function GetCpu(){cpu_num=`grep -c "model name" /proc/cpuinfo`cpu_user=`top -b -n 1 | grep Cpu | awk '{print $2}' | cut -f 1 -d "%"`cpu_system=`top -b -n 1 | grep Cpu | awk '{print $4}' | cut -f 1 -d "%"`cpu_idle=`top -b -n 1 | grep Cpu | awk '{print $8}' | cut -f 1 -d "%"`cpu_iowait=`top -b -n 1 | grep Cpu | awk '{print $10}' | cut -f 1 -d "%"`cpu_interrupt=`vmstat -n 1 1 | sed -n 3p | awk '{print $11}'`cpu_context_switch=`vmstat -n 1 1 | sed -n 3p | awk '{print $12}'`cpu_load_15min=`uptime | awk '{print $12}' | cut -f 1 -d ','`cpu_load_5min=`uptime | awk '{print $11}' | cut -f 1 -d ','`cpu_load_1min=`uptime | awk '{print $10}' | cut -f 1 -d ','`color "cpu总核数：" "$cpu_num"color "用户空间占用CPU百分比：" "$cpu_user"color "内核空间占用CPU百分比：" "$cpu_system"color "空闲CPU百分比：" "$cpu_idle"color "等待输入输出占CPU百分比：" "$cpu_iowait"color "CPU中断次数：" "$cpu_interrupt"color "CPU上下文切换次数：" "$cpu_context_switch"color "CPU 15分钟前到现在的负载平均值：" "$cpu_load_15min"color "CPU 5分钟前到现在的负载平均值：" "$cpu_load_5min"color "CPU 1分钟前到现在的负载平均值：" "$cpu_load_1min"
}

2.对内存的监控函数

function GetMem(){mem_total=`free | grep Mem | awk '{print $2}'`mem_sys_used=`free | grep Mem | awk '{print $3}'`mem_sys_free=`free | grep Mem | awk '{print $4}'`mem_user_used=`free | sed -n 3p | awk '{print $3}'`mem_user_free=`free | sed -n 3p | awk '{print $4}'`mem_swap_total=`free | grep Swap | awk '{print $2}'`mem_swap_used=`free | grep Swap | awk '{print $3}'`mem_swap_free=`free | grep Swap | awk '{print $4}'`color "物理内存总量：" "$mem_total"color "已使用内存总量(操作系统)：" "$mem_sys_used"color "剩余内存总量(操作系统)：" "$mem_sys_free"color "已使用内存总量(应用程序)：" "$mem_user_used"color "剩余内存总量(应用程序)：" "$mem_user_free"color "交换分区总大小：" "$mem_swap_total"color "已使用交换分区大小：" "$mem_swap_used"color "剩余交换分区大小：" "$mem_swap_free"
}

3.对磁盘IO的监控函数

function GetDiskIo(){disk=sdaread -p "请输入指定磁盘：(eg:sda)" input_diskif [ -z "$input_disk" ]; thenecho "用户未输入，使用默认值 $disk"input_disk="$disk"  # 由于未赋值，这里相当于保持默认elseecho "用户输入的disk路径: $input_disk"fiecho "指定设备($input_disk)的统计信息"disk_sda_rs=`iostat -kx | grep $input_disk| awk '{print $4}'`disk_sda_ws=`iostat -kx | grep $input_disk| awk '{print $5}'`disk_sda_avgqu_sz=`iostat -kx | grep $input_disk| awk '{print $9}'`disk_sda_await=`iostat -kx | grep $input_disk| awk '{print $10}'`disk_sda_svctm=`iostat -kx | grep $input_disk| awk '{print $11}'`disk_sda_util=`iostat -kx | grep $input_disk| awk '{print $12}'`color "每秒向设备发起的读请求次数：" "$disk_sda_rs"color "每秒向设备发起的写请求次数：" "$disk_sda_ws"color "向设备发起的I/O请求队列长度平均值：" "$disk_sda_avgqu_sz"color "每次向设备发起的I/O请求平均时间：" "$disk_sda_await"color "向设备发起的I/O服务时间均值：" "$disk_sda_svctm"color "向设备发起I/O请求的CPU时间百分占比：" "$disk_sda_util"
}

4.对线程状态的监控函数

function GetPidstat(){#初始化变量Ptotal=0Rtotal=0Stotal=0Ttotal=0Dtotal=0Ztotal=0for pid in /proc/[1-9]*do#获取进程状态let Ptotal=Ptotal+1stat=$(cd $pid && cat stat| awk '{print $3}')case $stat inR)let Rtotal=Rtotal+1;;S)let Stotal=Stotal+1;;T)let Ttotal=Ttotal+1;;D)let Dtotal=Dtotal+1;;Z)let Ztotal=Ztotal+1;;esacdonecolor "当前进程总数为：" "$Ptotal"color "其中Running进程数为：" "$Rtotal"color "其中Sleeping进程数为：" "$Stotal"color "其中Stopped进程数为：" "$Ttotal"color "其中Disk sleep进程数为：" "$Dtotal"color "其中Zombies进程数为：" "$Ztotal"
}

5.对网卡流量的监控函数

function GetNet(){eth_name=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $2}'`rxpck_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $3}'`txpck_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $4}'`rxkB_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $5}'`txkB_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $6}'`rxcmp_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $7}'`txcmp_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $8}'`rxmcst_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $9}'`color "$eth_name每秒钟接收的数据包:" "$rxpck_num"color "$eth_name每秒钟发送的数据包:" "$txpck_num"color "$eth_name每秒钟接收的字节数:" "$rxkB_num"color "$eth_name每秒钟发送的字节数:" "$txkB_num"color "$eth_name每秒钟接收的压缩数据包:" "$rxcmp_num"color "$eth_name每秒钟发送的压缩数据包:" "$txcmp_num"color "$eth_name每秒钟接收的多播数据包:" "$rxmcst_num"
}

6.实现效果

#!/bin/bash
function color() {local a=$1local b=$2echo -e "\033[1;32m$a\033[0m \033[1;31m$b\033[0m"
}
function GetIp(){IP=`ifconfig | grep inet | grep -vE 'inet6|127.0.0.1' | awk '{print $2}'`echo "IP地址："$IP
}
#检查CPU利用率
function GetCpu(){cpu_num=`grep -c "model name" /proc/cpuinfo`cpu_user=`top -b -n 1 | grep Cpu | awk '{print $2}' | cut -f 1 -d "%"`cpu_system=`top -b -n 1 | grep Cpu | awk '{print $4}' | cut -f 1 -d "%"`cpu_idle=`top -b -n 1 | grep Cpu | awk '{print $8}' | cut -f 1 -d "%"`cpu_iowait=`top -b -n 1 | grep Cpu | awk '{print $10}' | cut -f 1 -d "%"`cpu_interrupt=`vmstat -n 1 1 | sed -n 3p | awk '{print $11}'`cpu_context_switch=`vmstat -n 1 1 | sed -n 3p | awk '{print $12}'`cpu_load_15min=`uptime | awk '{print $12}' | cut -f 1 -d ','`cpu_load_5min=`uptime | awk '{print $11}' | cut -f 1 -d ','`cpu_load_1min=`uptime | awk '{print $10}' | cut -f 1 -d ','`color "cpu总核数：" "$cpu_num"color "用户空间占用CPU百分比：" "$cpu_user"color "内核空间占用CPU百分比：" "$cpu_system"color "空闲CPU百分比：" "$cpu_idle"color "等待输入输出占CPU百分比：" "$cpu_iowait"color "CPU中断次数：" "$cpu_interrupt"color "CPU上下文切换次数：" "$cpu_context_switch"color "CPU 15分钟前到现在的负载平均值：" "$cpu_load_15min"color "CPU 5分钟前到现在的负载平均值：" "$cpu_load_5min"color "CPU 1分钟前到现在的负载平均值：" "$cpu_load_1min"
}
#检查内存使用率
function GetMem(){mem_total=`free | grep Mem | awk '{print $2}'`mem_sys_used=`free | grep Mem | awk '{print $3}'`mem_sys_free=`free | grep Mem | awk '{print $4}'`mem_user_used=`free | sed -n 3p | awk '{print $3}'`mem_user_free=`free | sed -n 3p | awk '{print $4}'`mem_swap_total=`free | grep Swap | awk '{print $2}'`mem_swap_used=`free | grep Swap | awk '{print $3}'`mem_swap_free=`free | grep Swap | awk '{print $4}'`color "物理内存总量：" "$mem_total"color "已使用内存总量(操作系统)：" "$mem_sys_used"color "剩余内存总量(操作系统)：" "$mem_sys_free"color "已使用内存总量(应用程序)：" "$mem_user_used"color "剩余内存总量(应用程序)：" "$mem_user_free"color "交换分区总大小：" "$mem_swap_total"color "已使用交换分区大小：" "$mem_swap_used"color "剩余交换分区大小：" "$mem_swap_free"
}#检查磁盘IO状态
function GetDiskIo(){disk=sdaread -p "请输入指定磁盘：(eg:sda)" input_diskif [ -z "$input_disk" ]; thenecho "用户未输入，使用默认值 $disk"input_disk="$disk"  # 由于未赋值，这里相当于保持默认elseecho "用户输入的disk路径: $input_disk"fiecho "指定设备($input_disk)的统计信息"disk_sda_rs=`iostat -kx | grep $input_disk| awk '{print $4}'`disk_sda_ws=`iostat -kx | grep $input_disk| awk '{print $5}'`disk_sda_avgqu_sz=`iostat -kx | grep $input_disk| awk '{print $9}'`disk_sda_await=`iostat -kx | grep $input_disk| awk '{print $10}'`disk_sda_svctm=`iostat -kx | grep $input_disk| awk '{print $11}'`disk_sda_util=`iostat -kx | grep $input_disk| awk '{print $12}'`color "每秒向设备发起的读请求次数：" "$disk_sda_rs"color "每秒向设备发起的写请求次数：" "$disk_sda_ws"color "向设备发起的I/O请求队列长度平均值：" "$disk_sda_avgqu_sz"color "每次向设备发起的I/O请求平均时间：" "$disk_sda_await"color "向设备发起的I/O服务时间均值：" "$disk_sda_svctm"color "向设备发起I/O请求的CPU时间百分占比：" "$disk_sda_util"
}
function GetPidstat(){#初始化变量Ptotal=0Rtotal=0Stotal=0Ttotal=0Dtotal=0Ztotal=0for pid in /proc/[1-9]*do#获取进程状态let Ptotal=Ptotal+1stat=$(cd $pid && cat stat| awk '{print $3}')case $stat inR)let Rtotal=Rtotal+1;;S)let Stotal=Stotal+1;;T)let Ttotal=Ttotal+1;;D)let Dtotal=Dtotal+1;;Z)let Ztotal=Ztotal+1;;esacdonecolor "当前进程总数为：" "$Ptotal"color "其中Running进程数为：" "$Rtotal"color "其中Sleeping进程数为：" "$Stotal"color "其中Stopped进程数为：" "$Ttotal"color "其中Disk sleep进程数为：" "$Dtotal"color "其中Zombies进程数为：" "$Ztotal"
}
function GetNet(){eth_name=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $2}'`rxpck_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $3}'`txpck_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $4}'`rxkB_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $5}'`txkB_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $6}'`rxcmp_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $7}'`txcmp_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $8}'`rxmcst_num=`sar -n DEV 1 1|grep ens|awk 'NR==2{print $9}'`color "$eth_name每秒钟接收的数据包:" "$rxpck_num"color "$eth_name每秒钟发送的数据包:" "$txpck_num"color "$eth_name每秒钟接收的字节数:" "$rxkB_num"color "$eth_name每秒钟发送的字节数:" "$txkB_num"color "$eth_name每秒钟接收的压缩数据包:" "$rxcmp_num"color "$eth_name每秒钟发送的压缩数据包:" "$txcmp_num"color "$eth_name每秒钟接收的多播数据包:" "$rxmcst_num"
}
echo "---------------------开始检查CPU----------------------"
GetCpu
echo "---------------------开始检查内存---------------------"
GetMem
echo "---------------------开始检查磁盘IO-------------------"
GetDiskIo
echo "---------------------开始检查进程状态-----------------"
GetPidstat
echo "---------------------开始检查网卡流量-----------------"
GetNet