centos下简单配置安装Squid 3.0反向代理

安装篇：

本教程应用环境为干净centos 5.5 ，预先分好并加载/data分区,并且关闭selinux及iptables

首先修改文件描述符并设定临时端口范围，这些设置重启后生效

 
cat >> /etc/security/limits.conf <<DDD 
* soft nofile 8192 
* hard nofile 20480 
DDD 

cat >> /etc/sysctl.conf <<DDD 
#set temp port range 
net.ipv4.ip_local_port_range = 32768 61000 
DDD 

init 6 

确认修改是否正确

复制代码代码如下:

 
[root@sudutest ~]# ulimit -n 
8192 
[root@suduotest ~]# sysctl -n net.ipv4.ip_local_port_range 
net.ipv4.ip_local_port_range = 32768 61000 

添加squid专用账户

复制代码代码如下:

 
groupadd squid 
useradd -g squid -s /bin/false -M squid 

复制代码代码如下:

 
mkdir /data/squidlog/ 
chown -R squid.squid /data 

然后上传或者wget squid3.0软件tar包，tar zxvf解压，并且进入解压后的目录安装编译

复制代码代码如下:

 
./configure Cprefix=/usr/local/squid3 Cenable-async-io=100 Cwith-pthreads Cenable-storeio="aufs,diskd,ufs" Cenable-removal-policies="heap,lru" Cenable-icmp Cenable-delay-pools Cenable-useragent-log Cenable-referer-log Cenable-kill-parent-hack Cenable-arp-acl Cenable-default-err-language=Simplify_Chinese Cenable-err-languages="Simplify_Chinese English" Cdisable-poll Cdisable-wccp Cdisable-wccpv2 Cdisable-ident-lookups Cdisable-internal-dns Cenable-basic-auth-helpers="NCSA" Cenable-stacktrace Cwith-large-files Cdisable-mempools Cwith-filedescriptors=65535 Cenable-ssl Cenable-x-accelerator-var 
make 
make install 
make install-pinger 

至此squid已经成功安装了，然后大家自己所需的/usr/local/squid3/etc/squid.conf 配置文件，我这边的配置文件将会在本文末尾贴出来供大家研究。

写好配置文件后执行下面的命令初始化cache目录
/usr/local/squid3/sbin/squid -z
然后运行squid，注：-D参数用来跳过DNS检测
/usr/local/squid3/sbin/squid -D
最后设置squid开机自动启动
echo "/usr/local/squid3/sbin/squid -D " >>/etc/rc.local
维护篇：

以下是squid常用的命令
如果修改过配置文件，则用下面的命令重读配置文件（即时生效）
/usr/local/squid3/sbin/squid -k reconfigure
检查配置文件配置的语法是否正确
注：只有像这样的“cache_cf.cc(346) squid.conf:14 unrecognized: 'http1_port'”才是语法错误，
“WARNING: use of 'reload-into-ims'……”这类提示属于意见建议，可以忽略。
/usr/local/squid3/sbin/squid -k parse
查看squid的日志和进程，看squid运行是否正常

复制代码代码如下:

 
ps -ef |awk '/^squid/' 
cat /data/squidlog/cache.log 
/usr/local/squid3/sbin/squid -k check ;echo $? 

关闭squid
发出关闭信号，等会话结束后彻底关闭
/usr/local/squid3/sbin/squid -k shutdown
关闭squid（更高优先级，直接关闭squid）
/usr/local/squid3/sbin/squid -k interrupt

关闭squid（最高优先级，直接杀死squid进程）
/usr/local/squid3/sbin/squid -k kill
滚动日志文件
/usr/local/squid3/sbin/squid -k rotate
设置每周二凌晨四点30分自动滚动日志

echo "30 4 * * 2 root /usr/local/squid3/sbin/squid -k rotate " >>/etc/crontab

目前应用中的squid.conf文件，由于日志文件增长很快，所以直接输出到/dev/null丢弃掉了

复制代码代码如下:

 
#basic 
cache_effective_user squid 
cache_effective_group squid 
pid_filename /usr/local/squid3/var/logs/squid.pid 
visible_hostname squid.678114.com 
cache_mgr sudu@sudu.us 
error_directory /usr/local/squid3/share/errors/Simplify_Chinese 
icon_directory /usr/local/squid3/share/icons 
mime_table /usr/local/squid3/etc/mime.conf 
hosts_file /etc/hosts 

acl DEIpadd dstdom_regex [0-9]$ 
http_access deny DEIpadd 

cache_replacement_policy lru 
memory_replacement_policy lru 

http_port 80 vhost vport 

cache_mem 4024 MB 
maximum_object_size_in_memory 5120 KB 

icp_port 0 

#.cache_dir 
cache_dir aufs /data/cache 50000 64 128 

max_open_disk_fds 0 
maximum_object_size 20 MB 

#.cache_peer 
cache_peer 125.76.225.44 parent 80 0 no-query originserver no-digest name=all 
cache_peer_domain all .678114.com 

#acl 
acl Safe_ports port 80 
acl SSL_ports port 443 
acl LanSrc src 192.168.100.0/24 
acl webdomain dstdomain .678114.com 
acl manager proto cache_object 
acl localhost src 127.0.0.1/255.255.255.255 
acl CONNECT method CONNECT 
http_access allow manager localhost 
http_access deny manager 
http_access deny !Safe_ports 
http_access deny CONNECT !SSL_ports 
http_access allow LanSrc 
http_access allow webdomain 
http_access deny all 

#refresh_pattern 
refresh_pattern -i /$ 15 90% 600 reload-into-ims 
refresh_pattern -i .html$ 15 90% 600 reload-into-ims 
refresh_pattern -i .htm$ 15 90% 600 reload-into-ims 
refresh_pattern -i .shtml$ 15 90% 600 reload-into-ims 
refresh_pattern -i .hml$ 15 90% 600 reload-into-ims 
refresh_pattern -i .gif$ 1440 90% 129600 reload-into-ims 
refresh_pattern -i .swf$ 1440 90% 129600 reload-into-ims 
refresh_pattern -i .jpg$ 1440 90% 129600 reload-into-ims 
refresh_pattern -i .png$ 1440 90% 129600 reload-into-ims 
refresh_pattern -i .bmp$ 1440 90% 129600 reload-into-ims 
refresh_pattern -i .js$ 120 90% 129600 reload-into-ims 
refresh_pattern -i .css$ 120 90% 129600 reload-into-ims 
refresh_pattern -i .wma$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .zip$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .mp3$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .rar$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .rm$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .flv$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .rar$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .rm$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .avi$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .3gp$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .mp4$ 1440 90% 21600 reload-into-ims 
refresh_pattern -i .wmv$ 1440 90% 21600 reload-into-ims 

#keepalived 
client_persistent_connections off 
server_persistent_connections on 

#log 
emulate_httpd_log on 
logformat web1 %{X-Forwarded-For}>h %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh 
cache_log /data/squidlog/cache.log 
cache_access_log /dev/null web1 
cache_store_log /dev/null 
strip_query_terms off 
logfile_rotate 10 

#other 
forwarded_for on 
log_icp_queries off 
via off 
httpd_suppress_version_string off 
ie_refresh off 
tcp_recv_bufsize 32 KB 
ipcache_size 1024 
ipcache_low 90 
ipcache_high 95 
cache_swap_low 80 
cache_swap_high 90 
request_header_max_size 128 KB 

quick_abort_min 20 KB 
quick_abort_max 20 KB 
quick_abort_pct 95 

connect_timeout 1 minute 
negative_ttl 0 minutes 

read_timeout 30 seconds 
pconn_timeout 120 seconds 
half_closed_clients off 
client_lifetime 10 minutes 
shutdown_lifetime 5 seconds 

hierarchy_stoplist cgi-bin ? 
access_log /dev/null squid 

本文首发于http://www.sudu.us/simple-to-install-squid-3-0-reverse-proxy-configuration/

centos下简单配置安装Squid 3.0反向代理

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