服务器群秒级别文件同步（ssh+SHELL）

1.介绍

2.业务服务器远程更新浏览服务器文件的脚本

#!/bin/bash

operate=$1
ip=$2
conf_file="/var/www/html/test/ip_list"
file_chsum="/var/www/html/test/cksvalue"
file_ser="10.60.10.62"

cksum(){
  ssh ${file_ser} "cksum ${conf_file}|awk '{print$1}' > ${file_chsum}"
  if [ $? -ne 0 ];then
    #生成cksum值失败
    echo "10005"
  fi
}

if [[ ! $ip =~ ^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$ ]];then
  #IP不合法
  echo "10003";
  exit 1;
fi

if [[ "${operate}" == "add" ]];then
  ips=`ssh ${file_ser} "cat $conf_file|grep ${ip}/32|wc -l"`
  if [ ${ips} -eq 0 ];then
    ssh ${file_ser} "echo "${ip}/32" >> $conf_file"
    if [ $? -eq 0 ];then
      cksum
      #添加IP成功
      echo "10000"
      exit 0;
    else
      #添加IP失败
      echo "10001"
      exit 1;
    fi
  else
    #添加IP成功(IP已存在)
    echo "10000";
    exit 0;
  fi
elif [[ "${operate}" == "del" ]];then
  ssh ${file_ser} "sed -i '/${ip}/32/d' $conf_file"
  if [ $? -eq 0 ];then
    cksum
    #删除IP成功
    echo "10000"
    exit 0;
  else
    #删除IP失败
    echo "10002"
    exit 1;
  fi
else 
  #参数1($1)不合法
  echo "10004"
  exit 1;
fi

3.浏览服务器采用http的方式提供配置文件和cksum值的浏览和下载

4.VPS主机群每隔30校验一次配置文件的cksum值来保持配置文件的最新状态

* * * * * sleep 10 && sh /tmp/sync_customIP.sh
* * * * * sleep 40 && sh /tmp/sync_customIP.sh

#!/bin/bash

conf_file_url="http://10.60.10.62:8060/test/ip_list"
cksum_url="http://10.60.10.62:8060/test/cksvalue"
local_conf_file="/tmp/ip_list"
time=`date`
log="/tmp/sync_customIP.log"

get_cksum() {
  remote_cksum=`curl -s "${cksum_url}"`
  local_cksum=`cksum ${local_conf_file}|awk '{print$1}'`
}

sync_file() {
  cat ${local_conf_file} > /tmp/.tmp_ip.txt
  wget -q  ${conf_file_url} -O ${local_conf_file};
}


get_cksum

if [[ "$remote_cksum" != "$local_cksum" ]];then
  sync_file
  get_cksum
  if [[ "$remote_cksum" != "$local_cksum" ]];then
    cat /tmp/.tmp_ip.txt > ${local_conf_file}
    echo "${time} sync fail.." >> $log
  else
    echo "${time} sync  success.." >> $log
  fi
else
  echo "${time} there are no need to sync.. ">> $log
fi

log_count=`cat $log |wc -l`
if [ $log_count -gt 2000 ];then
  sed -i '1,1000d' $log
fi