shell实现统计nginx 目录下一共有多少个属于本机映射的vhost...

765435 · 发表于 2016-9-14 10:03:08

需求分析:有些小项目的公司一个服务器上的nginx上配置了很多个域名站点,你会一个个配置文件去查看有哪些站点，有哪些域名，这些是否域名配置了负载均衡？那个域名解析映射的是本机。
为此，我写了个脚本用了批量服务器整理
技能演练提升，shell数组的循环，awk gsub函数的应用，自动化需求的发现与体验
话不多少，下面是鄙人的代码：

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#!/bin/bash
EXEC=nginx
LOCAL_IPS=`ifconfig | grep "t a" | awk '{print $2}'| awk -F":" '{print $2}' | awk BEGIN{RS=EOF}'{if($NR!=NR){gsub(/\n/," ")};print}'`
which $EXEC
if [ ! $? -eq 0 ];then
echo -e "\[033m 请确认是否安装了$EXEC\[0m";
exit 1;
fi
EXEC_BIN=`which $EXEC`
BASE_HOME=`ls -l $EXEC_BIN | awk '{print $NF}'`
BIN_HOME=`echo ${BASE_HOME%%$EXEC}`
CONF_HOME=`cd $BIN_HOME && cd .. && pwd`/conf
server_nums=`grep -ir "server_name" $CONF_HOME | awk -F"server_name" '{print $2}' | uniq |  awk BEGIN{RS=EOF}'{gsub(/\n/," ");print}' | awk '{gsub(";"," ");print}' | awk '{print NF}' | uniq`
server_names=`grep -ir "server_name" $CONF_HOME | awk -F"server_name" '{print $2}' | uniq |  awk BEGIN{RS=EOF}'{gsub(/\n/," ");print}' | awk '{gsub(";"," ");print}'`
echo "一共发现$server_nums个域名"
### 将域名写入临时文件 ##
rm -rf /tmp/server_names.txt
for server in $server_names
do
if [[ $server =~ "letiku.net" ]];then
      for ip in ${LOCAL_IPS[@]}
      do
         ping_rs=`ping -c 1 $server | sed -n '1p' | grep "$ip"`
         #echo $ping_rs
         if [ ! -z "$ping_rs" ];then
            echo $server >> /tmp/server_names.txt
         fi
      done
fi
done
local_server_num=`cat /tmp/server_names.txt | wc -l`
echo "属于本机的vhost一共有$local_server_num个"

4.脚本运行结果截图:
QQ截图20160914100251.png