Skip to content

squid.md

Latest commit

 

History

History
101 lines (63 loc) · 2.46 KB

squid.md

File metadata and controls

101 lines (63 loc) · 2.46 KB

##squid

###前言 squid是款优秀的代理服务器,普通代理、透明代理、反向代理。作为服务器加速使用，采用反向代理，缓冲静态文件，达到加速目的。

###源码安装###

下载地址，选择最新稳定版

http://www.squid-cache.org/Versions/

安装流程，基于最少安装

yum -y install gcc gcc-c++
wget http://www.squid-cache.org/Versions/v3/3.5/squid-3.5.5.tar.gz
tar zxvf squid-3.5.5.tar.gz
cd squid-3.5.5
./configure --prefix=/usr/local/squid
make && make install

配置初始，参考手册sqduid.conf.documented

http_port 80 accel vhost 
http_access allow all 
cache_peer 192.168.100.82 parent 80 0 originserver round-robin weight=1 
cache_peer 192.168.100.83 parent 80 0 originserver round-robin weight=1 
visible_hostname my.test.com 
cache_mgr gencat@163.com


http_port 3128
cache_mem 128 MB
maximum_object_size 4 MB
minimum_object_size 0 KB
maximum_object_size_in_memory	 4096 KB
cache_dir ufs /usr/local/squid/var/cache/squid 100 16 256
access_log daemon:/usr/local/squid/var/logs/access.log squid
cache_log /usr/local/squid/var/logs/cache.log

logformat combined   %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh

#当cache高于95%的时候开始删除cache,直到保持80%的cache容量
cache_swap_low 80
cache_swap_high 95	

#允许使用purge清空缓存
acl AdminBoxes src 127.0.0.1 172.16.0.1 192.168.0.1
acl Purge method PURGE
http_access allow AdminBoxes Purge
http_access deny Purge

cache_effective_user nobody	
cache_effective_group nobody

###错误处理

  1. 权限问题，squid默认用户为nobody

    /usr/local/squid/var/logs/cache.log: Permission denied

    see: (in squid.conf)

     cache_effective_user   nobody
 cache_effective_group  nobody

    chown -R nobody:nobody /usr/local/squid/var

###参考清空脚本

cat clear_squid.cache.sh

#!/bin/sh

#缓存路径
squidcache_path=/usr/local/squid/var/cache/squid
squidclient_path=/usr/local/squid/bin/squidclient

grep -a -r $1 $squidcache_path/* | strings | grep "http:"| awk -F'ttp:' '{print "http:" $2;}' > cache_list.list
for url in `cat cache_list.list`; do
	$squidclient_path -m PURGE -p 80 $url
done

用法：

1、清除所有Flash缓存（扩展名.swf）：
./clear_squid_cache.sh swf
2、清除URL中包含sina.com.cn的所有缓存：
./clear_squid_cache.sh sina.com.cn
3、清除文件名为zhangyan.jpg的所有缓存：
./clear_squid_cache.sh zhangyan.jpg