分享一个Linux系统巡检脚本,话不多说,上干货!
#!/bin/bash
########################################################################################################
# @mail [email protected]
# @author qayu
# @company_name
########################################################################################################
# @Scpript 该脚本用于系统日常巡检,仅供学习研究 #######################
########################################################################################################
function RED(){
echo -e "\033[31m$@\033[0m"
}
function GRE(){
echo -e "\033[36m$@\033[0m"
}
function OS_INFO(){
# 系统名
local OS_NAME=`uname -n`
# 系统版本
local OS_VERSION=`cat /etc/.kyinfo | grep dist_id | grep -oE "Kylin.*" 2>/dev/null || echo 获取信息失败`
# 系统类型
local OS_TYPE=`uname`
# 主机序列号
local OS_NUM=`dmidecode -t system | grep 'Serial Number' | awk '{print $3}'`
# 系统内核版本
local OS_KERNEL=`uname -r`
# 系统机器码
local OS_CODE=""
# 系统语言环境
local OS_LANG=`echo $LANG`
# 系统时间
local OS_DATE=`date +"%Y-%m-%d %H:%M:%S"`
# 系统运行时间
local OS_UPTIME=`uptime | awk -F',' '{sub(/.*up /,"",$1);print $1'} || echo 获取信息失败`
# 系统上次重启时间
local OS_LAST_REBOOT=`last reboot | head -1 | awk '{print $5,$6,$7,$8,$10}'`
# 系统上次关机时间
local OS_LAST_SHUTDOWN=`last -x | grep shutdown | head -1 | awk '{print $5,$6,$7,$8,$10}'`
RED "################################# [ 系统信息巡检区 ] ######################################"
GRE "主机名:$OS_NAME"
GRE "主机类型:$OS_TYPE"
GRE "主机序列号:${OS_NUM:-获取信息失败}"
GRE "系统版本:$OS_VERSION"
GRE "系统内核版本:$OS_KERNEL"
GRE "系统机器码:${OS_CODE:-获取信息失败}"
GRE "系统语言环境:${OS_LANG}"
GRE "系统时间;$OS_DATE"
GRE "系统已运行时间:$OS_UPTIME"
GRE "系统上次重启时间:${OS_LAST_REBOOT:-获取信息失败}"
GRE "系统上次关机时间:${OS_LAST_SHUTDOWN:-获取信息失败}"
}
function OS_HDWARE(){
# CPU架构
local CPU_ARCH=`uname -m`
# CPU型号
local CPU_TYPE=`cat /proc/cpuinfo | grep "model name" | uniq | awk -F':' '{sub(/ /,"",$2);print $2}'`
# CPU个数
local CPU_NUM=`cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l`
# CPU 核数
local CPU_CORE=`cat /proc/cpuinfo | grep cores | uniq | awk -F':' '{sub(/ /,"",$2);print $2}'`
# CPU 频率
local CPU_HZ=`cat /proc/cpuinfo | grep "cpu MHz" | uniq | awk -F':' '{sub(/ /,"",$2);printf "%s MHz\n",$2}'`
# 内存容量
local ME_SIZE=$(echo "scale=2;`cat /proc/meminfo | grep 'MemTotal:' | awk '{print $2}'`/1048576"|bc)
# 空闲内存
local ME_FREE=$(echo "scale=2;`cat /proc/meminfo | grep 'MemFree:' | awk '{print $2}'`/1048576"|bc)
# 可用内存
local ME_FREEE=$(echo "scale=2;`cat /proc/meminfo | grep 'MemAvailable:' | awk '{print $2}'`/1048576" | bc)
# 内存使用率
local ME_USE=$(awk 'BEGIN{printf "%.1f%\n",('$ME_SIZE'-'$ME_FREEE')/'$ME_SIZE'*100}')
# SWAP大小
local ME_SWAP_SIZE=$(echo "scale=2;`cat /proc/meminfo | grep 'SwapTotal:' | awk '{print $2}'`/1048576"|bc)
# SWAP可用
local ME_SWAP_FREE=$(echo "scale=2;`cat /proc/meminfo | grep 'SwapFree:' | awk '{print $2}'`/1048576"|bc)
# SWAP使用率
local ME_SWAP_USE=$(awk 'BEGIN{printf "%.1f%\n",('$ME_SWAP_SIZE'-'$ME_SWAP_FREE')/'$ME_SWAP_SIZE'*100}')
# Buffer大小
local ME_BUF=$(cat /proc/meminfo | grep 'Buffers:' | awk '{printf "%s KB",$2}')
# 内存Cache大小
local ME_CACHE=$(cat /proc/meminfo | grep '^Cached:' | awk '{printf "%s KB",$2}')
# 当前系统所有网卡
local NET_DEVICE=(`cat /proc/net/dev | awk 'NR>2 && $1 !~/lo/ {sub(/:/,"");print $1}'`)
RED "################################# [ 系统硬件巡检区 ] ######################################"
GRE "CPU型号:$CPU_TYPE"
GRE "CPU架构:$CPU_ARCH"
GRE "CPU个数:$CPU_NUM"
GRE "CPU核数: $CPU_CORE"
GRE "CPU频率:$CPU_HZ"
GRE "内存容量:${ME_SIZE} GB"
GRE "内存空闲:${ME_FREE} GB"
GRE "内存可用:${ME_FREEE} GB"
GRE "内存使用率:${ME_USE}"
GRE "SWAP容量:$ME_SWAP_SIZE GB"
GRE "SWAP可用容量:$ME_SWAP_FREE GB"
GRE "SWAP使用率:$ME_SWAP_USE"
GRE "内存Buffer大小:${ME_BUF}"
GRE "内存Cache大小:${ME_CACHE}"
for i in ${NET_DEVICE[@]}
do
GRE "网卡:$i 状态: $(ip link show ens33 | awk 'NR==1{print $9}') RX: $(ethtool -g ens33 | grep "RX:" | tail -1 | awk '{print $2}') TX: $(ethtool -g ens33 | grep "TX:" | tail -1 | awk '{print $2}')"
done
}
function OS_NETWORK(){
# 系统IP
local IP=$(hostname -I)
# 网关地址
local GATEWAY=$(ip route | grep default &>/dev/null && ip route | grep default | awk '{print $3}' || echo '未设置默认网关')
# DNS地址
local DNS=(`cat /etc/resolv.conf | grep nameserver | uniq | awk '{print $2}'`)
RED "################################# [ 系统网络巡检区 ] ######################################"
GRE "IP地址:$IP"
GRE "网关地址:$GATEWAY"
GRE "DNS地址:${DNS[@]}"
GRE "网关[$GATEWAY]连接情况: $(ping -t 1 -i 1 -c 5 -W 1 192.168.0.2 &>/dev/null && echo '正常通信' || echo '无法通信')"
}
function OS_RESOURCE(){
# 系统磁盘列表
local DISK_LIST=(`lsblk | egrep "^[a-z].*" | grep -v "^sr" | awk '{print $1}'`)
# 系统磁盘使用率情况
local DISK_PER=(`df -h | awk 'NR>1 && $1 !~/sr/ {gsub(/%/,"",$5);print $5}'`)
# CPU空闲率
local CPU_FREE=$(top -d 1 -n 1 -b | awk 'NR==3{print $8}')
# CPU使用率
local CPU_USE=$(awk 'BEGIN{printf "%.1f%\n",100-'$CPU_FREE'}')
# CPU_TOP_TEN
local CPU_TOP_TEN=$(top -d 1 -n 1 -b | column -t | awk 'NR>=7 && NR<=15')
# 当前进程数
local CPU_PROCESSORS=$(top -d 1 -n 1 -b | awk 'NR==2{print $2}')
# 当前正在运行进程数
local CPU_RUN_PROCESSORS=$(top -d 1 -n 1 -b | awk 'NR==2{print $4}')
# 当前正在休眠进程数
local CPU_SL_PROCESSORS=$(top -d 1 -n 1 -b | awk 'NR==2{print $6}')
# 当前停止运行进程数
local CPU_STOP_PROCESSORS=$(top -d 1 -n 1 -b | awk 'NR==2{print 8}')
# 当前僵尸进程数
local CPU_ZOM_PROCESSORS=$(top -d 1 -n 1 -b | awk 'NR==2{print $10}')
RED "################################# [ 系统资源巡检区 ] ######################################"
GRE "CPU使用率:$CPU_USE"
GRE "CPU使用率前十进程信息:"
GRE "$(ps -eo user,pid,pcpu,pmem,args --sort=-pcpu | head -n 10)"
GRE "\n内存使用率前十进程信息:"
GRE "$(ps -eo user,pid,pcpu,pmem,args --sort=-pmem | head -n 10)"
GRE "\n磁盘IO信息:$(iotop -bon 1 &>/dev/null || echo 'io top 未安装信息获取失败')"
GRE "$(iotop -bon 1 &>/dev/null && iotop -bon 1 | head -n 13)"
GRE "\n磁盘分区使用率是否正常:正常"
for i in ${DISK_LIST[@]}
do
if [[ -z "$(lsblk --nodeps -no serial /dev/$i)" ]]; then
GRE "磁盘:$i 磁盘序列号:获取信息失败"
else
GRE "磁盘:$i 磁盘序列号:$(lsblk --nodeps -no serial /dev/$i)"
fi
done
for i in ${DISK_PER[@]}
do
if [ $i -gt 80 ]; then
RED "某分区磁盘使用率为:$i% > 80% 请及时扩容"
fi
done
GRE "\n系统磁盘分区inode使用情况:"
GRE "$(df -Thi)"
GRE "\n系统当前进程数:$CPU_PROCESSORS"
GRE "系统当前进程运行数:$CPU_RUN_PROCESSORS"
GRE "系统当前休眠进程数:$CPU_SL_PROCESSORS"
GRE "系统当前停止进程数:$CPU_STOP_PROCESSORS"
GRE "系统当前僵尸进程数:$CPU_ZOM_PROCESSORS"
GRE "\n系统当前允许最大fd数量:$(cat /proc/sys/fs/file-nr | awk '{print $3}')"
GRE "系统当前已打开fd数量:$(cat /proc/sys/fs/file-nr | awk '{print $1}')"
GRE "系统单个进程运行打开fd数量:$(ulimit -n)"
GRE "\n系统当前socket连接数:$(netstat -anp &>/dev/null && netstat -anp | wc -l || echo 'net-tools 未安装,获取信息失败')"
GRE "系统 established socket数量: $(netstat -anp &>/dev/null && netstat -anp | grep "ESTABLISHED" | wc -l || echo 'net-tools 未安装,获取信息失败')"
GRE "系统 sync socket数量:$(netstat -anp &>/dev/null && netstat -anp | grep "SYN" | wc -l || echo 'net-tools 未安装,获取信息失败')"
GRE "系统当前已建立socket如下:"
GRE "$(netstat -anp &>/dev/null && netstat -anp | grep ESTABLISHED | awk '{printf " 本地:%-20s <=> 外部:%-22s\n",$4,$5}' || echo '')"
}
function OS_SECURITY(){
# 系统所有能登录的用户
local OS_USER=(`cat /etc/passwd | awk -F':' '$NF !~/nologin|sync|shutdown|halt/ {print $1}'`)
# Selinux
local OS_SELINUX=`getenforce`
# 防火墙状态
local OS_FIREWALLD=`service firewalld status &>/dev/null | grep "running" && echo on || echo off`
RED "################################# [ 系统安全巡检区 ] ######################################"
GRE "防火墙状态: $OS_FIREWALLD"
GRE "Selinux状态:${OS_SELINUX}\n"
GRE "系统可登录用户数:$(cat /etc/passwd | awk -F':' '$NF !~/nologin|sync|shutdown|halt/ {print $1}' | wc -l)"
GRE "系统可登录用户:${OS_USER[@]}"
for i in ${OS_USER[@]}
do
GRE "用户 $i 最后1次登录信息: $(lastlog -u $i | awk 'NR==2')"
done
GRE "系统当前登录用户:"
GRE "$(who | sed 's#[()]##g' | awk '{printf " 用户: %10s 终端: %7s 登录时间: %7s %7s 登录IP: %7s\n",$1,$2,$3,$4,$5}')"
}
function OS_SERVICE(){
RED "################################# [ 系统服务巡检区 ] ######################################"
GRE "自行添加"
}
if [ $(id -u -n) != "root" ]; then
ERROR "请以ROOT用户运行这个脚本"
fi
OS_INFO
OS_HDWARE
OS_NETWORK
OS_RESOURCE
OS_SECURITY
标签:脚本,巡检,OS,GRE,awk,Linux,print,local,CPU
From: https://www.cnblogs.com/cheyunhua/p/17138478.html