linux系统主机每日巡检脚本

摘要：@Author: 爱踢人生sre# beseem CentOS6.X CentOS7.X# date: 20250224echo "Host Daily Check Script"[ $(id -u) -gt 0 ] && echo "请用root用户执行此脚

由于运维工程师的工作需要，要求每日对服务器进行线上巡检，巡检的指标有系统状态信息、CPU、内存、硬盘、网络这几个大项。

通过自动化手段对系统、网络或服务进行巡检，以确保其健康状态、性能、配置等满足预期。巡检脚本可以为系统管理员提供持续的监控，及早发现潜在问题并进行修复，避免系统故障或性能下降。

具体功能如下：

1.系统信息检查

2.CPU检查

3.内存检查

4.硬盘检查

5.网络检查

#!/bin/bash# @Author: 爱踢人生sre# beseem CentOS6.X CentOS7.X# date: 20250224echo "Host Daily Check Script"[ $(id -u) -gt 0 ] && echo "请用root用户执行此脚本！" && exit 1if [ ! -d /root/check_log ];then mkdir /root/check_log echo "/root/check_log检查日志存放目录创建成功"else echo "/root/check_log检查日志存放目录已存在"fifunction getSystem{echo ""echo ""echo 系统信息检查 Default_LANG=${LANG}OS=$(uname -o)Release=$(cat /etc/redhat-release 2>/dev/null)Kernel=$(uname -r)Hostname=$(uname -n)Nowdate=$(date +'%F %T')LastReboot=$(who -b | awk '{print $3,$4}')uptime=$(uptime | sed 's/.*up $[^,]*$, .*/\1/')echo " 语言环境: $Default_LANG"echo " 系统: $OS"echo " 发行版本: $Release"echo " 内核: $Kernel"echo " 主机名: $Hostname"echo " 当前时间: $Nowdate"echo " 最后启动: $LastReboot"echo " 运行时间: $uptime"}function getCpu{echo ""echo ""echo CPU检查 Physical_CPUs=$(grep "physical id" /proc/cpuinfo| sort | uniq | wc -l)Virt_CPUs=$(grep "processor" /proc/cpuinfo | wc -l)CPU_Kernels=$(grep "cores" /proc/cpuinfo|uniq| awk -F ': ' '{print $2}')CPU_Type=$(grep "model name" /proc/cpuinfo | awk -F ': ' '{print $2}' | sort | uniq)CPU_Hz=$(cat /proc/cpuinfo | grep "cpu MHz" | uniq | awk -F':' '{sub(/ /,"",$2);printf "%s MHz\n",$2}')CPU_Arch=$(uname -m)CPU_Usage=$(cat /proc/loadavg | awk '{print $1}')echo "物理CPU个数: $Physical_CPUs"echo "逻辑CPU个数: $Virt_CPUs"echo "每CPU核心数: $CPU_Kernels"echo "CPU型号: $CPU_Type"echo "CPU频率: $CPU_Hz"echo "CPU架构: $CPU_Arch"echo "CPU使用率: ${CPU_Usage}%"}function getMemory{echo ""echo ""echo 内存检查 Memory_Used=$(awk '/MemTotal/{total=$2}/MemFree/{free=$2}END{print (total-free)/1024/1024}' /proc/meminfo)Memory_Total=$(awk '/MemTotal/{total=$2}END{print (total)/1024/1024}' /proc/meminfo)# kb的换算是1000 kB的换算是1024Memory_Usage=$(awk '/MemTotal/{total=$2}/MemFree/{free=$2}END{print (total-free)/total*100}' /proc/meminfo)echo "已使用内存/全部内存: ${Memory_Used}GB/${Memory_Total}GB"echo "内存使用率: ${Memory_Usage}%"}function getDisk{echo ""echo ""echo 硬盘检查 Disk_Count=$(lsblk |awk '/disk/{print $1}'|wc -l)echo "硬盘数量: ${Disk_Count}个"echo "硬盘分区情况: "echo "`df -hTP | sort |grep -E "/sd|/mapper" |awk '{print ($1 "\t\n" " 文件系统"$2 " 合计"$3 " 已用"$4 " 剩余"$5 " 使用率"$6 " 挂载点"$7)}'`"# -P, --portability 使用 POSIX 输出格式,方便shell过滤处理smartctl -V >&/dev/nullif [ $? -eq 0 ]; then echo "smartctl工具已安装,可以进行硬盘健康检测: " for i in $(lsblk |awk '/disk/{print $1}') do echo "硬盘"$i `smartctl -H /dev/$i |grep -Ei "OK|PASSED|FAILED|Failure|Failed"` doneelse echo "smartctl工具未安装,无法进行硬盘健康检测"fi# "\n磁盘IO信息:$(iotop -bon 1 &>/dev/null || echo 'iotop 未安装信息获取失败')"}function getNetwork{echo ""echo ""echo 网络检查 Network_Device=$(cat /proc/net/dev | awk 'NR>2 && $1 !~/lo/ {sub(/:/,"");print $1}')for i in $Network_Devicedo echo "网卡：$i 状态: $(ip link show $Network_Device | awk 'NR==1{print $9}') RX: $(ethtool -g $Network_Device | grep "RX:" | tail -1 | awk '{print $2}') TX: $(ethtool -g $Network_Device | grep "TX:" | tail -1 | awk '{print $2}')" # rx是接收(receive),tx是发送(transport) MAC_Info=$(ip link | egrep -v "lo" | grep link | awk '{print $2}') echo "MAC地址: $Mac_Info" Private_Ip=$(ip addr | awk '/^[0-9]+: / {}; /inet.*global/ {print gensub(/(.*)\/(.*)/, "\\1", "g", $2)}') echo "IP地址: $Private_Ip" # Public_Ip=$(curl ifconfig.me -s) # echo "公网IP地址: $Public_Ip" Gateway=$(ip route | grep default | awk '{print $3}') # echo "网关地址: $Gateway" # Dns_Config=$(grep nameserver /etc/resolv.conf| grep -v "#" | awk '{print $2}' | tr '\n' ',' | sed 's/,$//') # echo "DNS地址: $Dns_Config" echo "网关连接情况: $(ping -c 4 -i 0.5 -W 3 $Gateway &>/dev/null && echo '正常通信' || echo '无法通信')" echo "外网连接情况: $(ping -c 4 -i 0.5 -W 3 baidu.com &>/dev/null && echo '正常通信' || echo '无法通信')" # 发送4次请求包，每次间隔0.5秒，最长等待时间为3秒doneListen_Port=$(ss -tuln | grep LISTEN | awk '{print $5}' | awk -F: '{print $2$4}' | sort |uniq -d | tr '\n' ',' | sed 's/,$//')echo "系统运行的端口: $Listen_Port"}function check{echo "Host Daily Check Script"getSystemgetCpugetMemorygetDiskgetNetwork}RESULTFILE="/root/check_log/check-`date +%Y%m%d`.txt"check > $RESULTFILEecho "检查结果：$RESULTFILE"chmod +x system_check.sh./system_check.sh