15项目实战_收集系统信息

项目实战_收集系统信息

脚本目的

收集系统信息，用于分析系统资源性能瓶颈

脚本功能

1.查看CPU利用率与负载(top、vmstat、sar)

2.查看磁盘、Inode利用率与I/O负载(df、iostst、iotop、sar、dstat)

3.查看内存利用率(free、vmstat)

4.查看TCP连接状态(netstat、ss)

5.查看CPU与内存占用最高的10个进程(top、ps)

6,查看网络流量(ifconfig、iftop、iptraf)

脚本内容

#!/bin/bash
#show system information

# 定义提示符
PS3="Your choice is: "

os_check(){
    # 获取包的安装方式
    if [ -e /etc/redhat-release ]; then
        # REDHAD=`cat /etc/redhat-release | cut -d' ' -f1`
        REDHAT=`cat /etc/redhat-release | awk '{print $1}'`
    else
        DEBIAN=`cat /etc/issue | cut -d' ' -f1`
    fi
    if [ "${REDHAT}" == "CentOS" -o "${REDHAT}" == "Red" ]; then
        P_M=yum
    elif [ "${DEBIAN}" == "Ubuntu" -o "${DEBIAN}" == "ubuntu" ]; then
        P_M=apt-get
    else
         echo "Operating system doen not support."
        exit 1
    fi
}

# 检查当前登录用户是否root
if [ ${LOGNAME} != root ]; then
    echo "Please use the root account operation."
    exit 1
fi

# 检查命令是否安装
if ! which vmstat &>/dev/null; then
    echo "vmstat command not found,now the install."
    sleep 1
    os_check
    ${P_M} install procps -y
    echo "-----------------------------------------------------------------"
fi

if ! which iostat &>/dev/null; then
    echo "vmstat command not found,now the install."
    sleep 1
    os_check
    ${P_M} install sysstat -y
    echo "-----------------------------------------------------------------"
fi

if ! which ifconfig &>/dev/null; then
    echo "ifconfig command not found,now the install."
    sleep 1
    os_check
    ${P_M} install net-tools -y
    echo "-----------------------------------------------------------------"
fi


while true
do
    select input in cpu_load disk_load disk_use disk_inode mem_use tcp_status cpu_top10 mem_top10 traffic quit
    do
        case ${input} in
            cpu_load)
                # cpu利用率与负载
                echo "-----------------------------------------"
                i=1
                while [[ $i -lt 3 ]]
                do
                    echo -e "\033[32m  参考值${i}\033[0m"
                    UTIL=`vmstat | awk '{if(NR==3){print 100-$(NF-2)"%"}}'`
                    USER=`vmstat | awk '{if(NR==3){print $(NF-4)"%"}}'`
                    SYS=`vmstat | awk '{if(NR==3){print $(NF-3)"%"}}'`
                    IOWAIT=`vmstat | awk '{if(NR==3){print $(NF-1)"%"}}'`
                    echo "Util: ${UTIL}"
                    echo "user use: ${USER}"
                    echo "System use: ${SYS}"
                    echo "I/O wait: ${IOWAIT}"
                    let i++
                    sleep 1
                done
                echo "-----------------------------------------"
                break
            ;;
            disk_load)
                #硬盘I/O负载
                echo "-----------------------------------------"
                i=1
                while [[ $i -lt 3 ]]
                do
                    echo -e "\033[32m  参考值${i}\033[0m"
                    UTIL=`iostat -x -k | awk '/^[v|s]/{OFS=": ";print $1,$NF"%"}'`
                    READ=`iostat -x -k | awk '/^[v|s]/{OFS=": ";print $1,$6"KB"}'`
                    WRITE=`iostat -x -k | awk '/^[v|s]/{OFS=": ";print $1,$7"KB"}'`
                    IOWAIT=`vmstat | awk '{if(NR==3){print $(NF-1)"%"}}'`
                    echo -e "Util:"
                    echo -e "${UTIL}"
                    echo -e "I/O Wait: ${IOWAIT}"
                    echo -e "Read/s:\n${READ}"
                    echo -e "Write/s:\n${WRITE}"
                    # let i++
                    i=$(($i+1))
                    sleep 1
                done              
                echo "-----------------------------------------"
                break
            ;;
            disk_use)
                #硬盘利用率
                DISK_LOG=/tmp/disk_use.tmp
                DISK_TOTAL=`fdisk -l | awk '/^Disk.*bytes/ && /\/dev/{print $2" ";printf "%d",$3;print "GB"}'`
                USE_RATE=`df -h | awk '/^\/dev/{print int($5)}'`
                for i in ${USE_RATE}
                do
                    if [ ${i} -gt 90 ]; then
                        PART=`df -h | awk '{if(int($5)=='''${i}'''){print $NF}}'`
                        echo "${PART} = ${i}%" >> ${DISK_LOG}
                    fi
                done
                echo "-----------------------------------------"
                echo -e "Disk total:\n${DISK_TOTAL}"
                if [ -f "${DISK_LOG}" ]; then
                    echo "-----------------------------------------"
                    cat ${DISK_LOG}
                    echo "-----------------------------------------"
                    rm -rf ${DISK_LOG}
                else
                    echo "-----------------------------------------"
                    echo "Disk use rate no than 90% of the partition."
                    echo "-----------------------------------------"
                fi
                break
            ;;
            disk_inode)
                #硬盘inode利用率
                INODE_LOG=/tmp/inode_use.tmp
                INODE_USE=`df -i | awk '/^\/dev/{print int($5)}'`
                for i in ${INODE_USE}
                do
                    if (( ${i} > 90 )); then
                        PART=`df -i | awk '{if(int($5)=='''${i}'''){print $NF}}'`
                        echo "${PART} = ${i}%" >> ${INODE_LOG}
                    fi
                done
                if [ -f "${INODE_LOG}" ]; then
                    echo "-----------------------------------------"
                    cat ${INODE_LOG}
                    echo "-----------------------------------------"
                    rm -rf ${INODE_LOG}
                else
                    echo "-----------------------------------------"
                    echo "Inode use rate no than 90% of the partition."
                    echo "-----------------------------------------"
                fi
                break
            ;;
            mem_use)
                #内存利用率
                echo "-----------------------------------------"
                MEM_TOTAL=`free -mh | awk '{if(NR==2){printf "%.1f",$2}}'`
                USE=`free -mh | awk '{if(NR==2){printf "%.1f",$3}}'`
                FREE=`free -mh | awk '{if(NR==2){printf "%.1f",$4}}'`
                CACHE=`free -mh | awk '{if(NR==2){printf "%.1f",$6}}'`
                echo -e "Total: ${MEM_TOTAL}"
                echo -e "Use: ${USE}"
                echo -e "Free: ${FREE}"
                echo -e "Cache: ${CACHE}"
                echo "-----------------------------------------"
                break
            ;;
            tcp_status)
                #网络连接状态
                echo "-----------------------------------------"
                COUNT=`ss -ant | awk '!/^State/{status[$1]++}END{for(i in status){print i,status[i]}}'`
                echo -e "Tcp connection status:\n${COUNT}"
                echo "-----------------------------------------"
                break
            ;;
            cpu_top10)
                #占用CPU高的前10个进程
                echo "-----------------------------------------"
                CPU_LOG=/tmp/cpu_top.tmp
                i=1
                while [[ $i -le 3 ]]
                do
                    #循环从11列开始（进程名）开始打印，如果i等于最后一行，就打印i的列，并换行，否则就打印i的列
                    ps aux | awk '{if($3>=0.1){{printf "PID: " $2 " CPU: " $3 "%--> "}for(i=11;i<=NF;i++){if(i==NF){printf $i"\n"}else{printf $i}}}}' | sort -k4 -nr | head -n 10 > ${CPU_LOG}
                    if [[ -n `cat ${CPU_LOG}` ]]; then
                        echo -e "\033[32m 参考值${i}\033[0m"
                        cat ${CPU_LOG}
                        > ${CPU_LOG}
                    else
                        echo "No process using the CPU."
                        break
                    fi
                    let i++
                    sleep 1
                done            
                echo "-----------------------------------------"
                break
            ;;
            mem_top10)
                #占用内存高的前10个进程
                echo "-----------------------------------------"
                MEM_LOG=/tmp/mem_top.tmp
                i=1
                while [[ $i -le 3 ]]
                do
                    #循环从11列开始（进程名）开始打印，如果i等于最后一行，就打印i的列，并换行，否则就打印i的列
                    ps aux | awk '{if($4>=0.1){{printf "PID: " $2 " Memory: " $4 "%--> "}for(i=11;i<=NF;i++){if(i==NF){printf $i"\n"}else{printf $i}}}}' | sort -k4 -nr | head -n 10 > ${MEM_LOG}
                    if [[ -n `cat ${MEM_LOG}` ]]; then
                        echo -e "\033[32m 参考值${i}\033[0m"
                        cat ${MEM_LOG}
                        > ${MEM_LOG}
                    else
                        echo "No process using the Memory."
                        break
                    fi
                    let i++
                    sleep 1
                done            
                echo "-----------------------------------------"
                break
            ;;
            traffic)
                #查看网络流量
                while : 
                do
                    read -p "Please enter the network card name(eth[0-9] or em[0-9]): " eth
                    if [ `ifconfig | grep -c "\<$eth\>"` -eq 1 ]; then
                        break
                    else
                        echo "Input format error or Don't have the card name,please input again."
                    fi
                done
                echo "-----------------------------------------"
                echo -e "In ------ Out"
                i=1
                while [[ $i -le 3 ]]
                do
                    # CentOS6和CentOS7 ifconfig输出进出流量信息位置不同
                    # CentOS6中RX与TX行号等于8
                    # CentOS7中RX行号是5，,TX行号是7
                    OLD_RX=`ifconfig eth0 | awk -F'[ :]+' '/bytes/{if(NR==8){print $4} else if(NR==5){print $6}}'`
                    OLD_TX=`ifconfig eth0 | awk -F'[ :]+' '/bytes/{if(NR==8){print $9} else if(NR==7){print $6}}'`
                    sleep 1
                    NEW_RX=`ifconfig eth0 | awk -F'[ :]+' '/bytes/{if(NR==8){print $4} else if(NR==5){print $6}}'`
                    NEW_TX=`ifconfig eth0 | awk -F'[ :]+' '/bytes/{if(NR==8){print $9} else if(NR==7){print $6}}'`
                    # 1M带宽==>1M=1024bit 计算下载速率的时候用的是KB/S（指的K字节（byte）每秒）1byte=8*bit
                    # 1M带宽的理论下载速度通常是1024/8=128KB/S
                    # 网卡的流量单位是byte 字节，所以要先除以1024转成Kbyte，然后转换成多少M带宽，就再除以128
                    RX=`awk 'BEGIN{printf "%.1f\n",'$((${NEW_RX}-${OLD_RX}))'/1024/128}'`
                    TX=`awk 'BEGIN{printf "%.1f\n",'$((${NEW_TX}-${OLD_TX}))'/1024/128}'`
                    echo "${RX}MB/s ${TX}MB/s"
                    let i++
                    sleep 1
                done
                echo "-----------------------------------------"
                break
            ;;
            quit)
                exit 0
            ;;
            *)
                echo "-----------------------------------------"
                echo "Please enter the right number."
                echo "-----------------------------------------"
                break
            ;;            
        esac
        
    done
done