日常巡检(脚本)

#!/bin/bash

function system(){
echo "#########################系统信息#########################"
os_type=`uname`
os_ver=`cat /etc/redhat-release`
os_ker=`uname -a|awk '{print $3}'`
os_time=`date +%f_%t`
os_run_time=`uptime |awk '{print $3}'|awk -f, '{print $1}'`
os_last_reboot_time=`who -b|awk '{print $2,$3}'`
os_hostname=`hostname`

echo "    系统类型：$os_type"
echo "    系统版本：$os_ver"
echo "    系统内核：$os_ker"
echo "    当前时间：$os_time"
echo "    运行时间：$os_run_time"
echo "最后重启时间：$os_last_reboot_time"
echo "    本机名称：$os_hostname"
}
system

function network(){
echo "#########################网络信息#########################"
internet=(`ifconfig|grep ens|awk -f: '{print $1}'`)
for((i=0;i<`echo ${#internet[*]}`;i++))
do 
  os_ip=`ifconfig ${internet[$i]}|head -2|grep inet|awk '{print $2}'`
  echo "      本机ip：${internet[$i]}:$os_ip"
done
curl -i http://www.baidu.com &>/dev/null
if [ $? -eq 0 ]
then echo "    访问外网：成功"
else echo "    访问外网：失败"
fi
}
network

function hardware(){
echo "#########################硬件信息#########################"
cpuid=`grep "physical id" /proc/cpuinfo |sort|uniq|wc -l`
cpucores=`grep "cores" /proc/cpuinfo|sort|uniq|awk -f: '{print $2}'`
cpumode=`grep "model name" /proc/cpuinfo|sort|uniq|awk -f: '{print $2}'`

echo "     cpu数量: $cpuid"
echo "     cpu核心:$cpucores"
echo "     cpu型号:$cpumode"

memtotal=`free -m|grep mem|awk '{print $2}'`
memfree=`free -m|grep mem|awk '{print $7}'`

echo "  内存总容量: ${memtotal}mb"
echo "剩余内存容量: ${memfree}mb"

disksize=0
swapsize=`free|grep swap|awk {'print $2'}`
partitionsize=(`df -t|sed 1d|egrep -v "tmpfs|sr0"|awk {'print $3'}`)
for ((i=0;i<`echo ${#partitionsize[*]}`;i++))
do
disksize=`expr $disksize + ${partitionsize[$i]}`
done
((disktotal=\($disksize+$swapsize\)/1024/1024))

echo "  磁盘总容量: ${disktotal}gb"

diskfree=0
swapfree=`free|grep swap|awk '{print $4}'`
partitionfree=(`df -t|sed 1d|egrep -v "tmpfs|sr0"|awk '{print $5}'`)
for ((i=0;i<`echo ${#partitionfree[*]}`;i++))
do
diskfree=`expr $diskfree + ${partitionfree[$i]}`
done

((freetotal=\($diskfree+$swapfree\)/1024/1024))

echo "剩余磁盘容量：${freetotal}gb"
}
hardware

function secure(){
echo "#########################安全信息#########################"

countuser=(`last|grep "still logged in"|awk '{print $1}'|sort|uniq`)
for ((i=0;i<`echo ${#countuser[*]}`;i++))
do echo "当前登录用户：${countuser[$i]}"
done

md5sum -c --quiet /opt/passwd.db &>/dev/null
if [ $? -eq 0 ]
then echo "    用户异常：否"
else echo "    用户异常：是"
fi
}
secure

　　centos7