linux中squid3(高命中率)缓存服务器配置

08-19

quid cache(简称为Squid)是一个流行的自由软件(GNU通用公共许可证)的代理服务器和Web缓存服务器。Squid有广泛的用途，从作为网页服务器的前置cache服务器缓存相关请求来提高Web服务器的速度，到为一组人共享网络资源而缓存万维网，域名系统和其他网络搜索，到通过过滤流量帮助网络安全，到局域网通过代理上网。Squid主要设计用于在Unix一类系统运行,下面我们来看看squid3(高命中率)缓存服务器配置教程。

今天对我的varnish进行了下小小的压力测试,40s里的8000并发,没有失败一个,估计还可以承受更大的并发,先不说varnish了,我最近找到个命中率很高的squid的配置文件,当然是squid3.0的配置文件,有需要的可以copy回去自己改.

系统:centos 5.x

需要的软件:squid-3.0.STABLE25.tar.gz

1.下载squid

代码如下
wget http://www.squid-cache.org/Versions/v3/3.0/squid-3.0.STABLE25.tar.gz tar zxf squid-3.0.STABLE25.tar.gz && cd squid-3.0.STABLE25

2.编译squid

代码如下

./configure --prefix=/usr/local/squid
--enable-async-io=100
--with-pthreads
--enable-storeio="aufs,diskd,ufs"
--enable-removal-policies="heap,lru"
--enable-icmp
--enable-delay-pools
--enable-useragent-log
--enable-referer-log
--enable-kill-parent-hack
--enable-arp-acl
--enable-default-err-language=Simplify_Chinese
--enable-err-languages="Simplify_Chinese English"
--disable-poll
--disable-wccp
--disable-wccpv2
--disable-ident-lookups
--disable-internal-dns
--enable-basic-auth-helpers="NCSA"
--enable-stacktrace
--with-large-files
--disable-mempools
--with-filedescriptors=65536
--enable-ssl
--enable-x-accelerator-var

make
make install
make install-pinger

3.配置squid

代码如下
cp /usr/local/squid/etc/squid.conf /usr/local/squid/etc/squid.conf.old >/usr/local/squid/etc/squid.conf ln -s /usr/local/squid/etc/squid.conf /etc/squid.conf

squid.conf里的内容:

代码如下

#accel listen port
http_port 80 accel vhost vport
#accel domain
cache_peer xx.xx.xx.xx parent 80 0 no-query originserver no-digest name=a
cache_peer_domain a www.111cn.net

#acl
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl SSL_ports port 443 563
acl Safe_ports port 80 # http
acl Safe_ports port 8080
acl LanSrc src all
acl LanDst dst all
acl LanDstDM dstdomain www.111cn.net

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 LanDst
http_access allow LanDstDM
http_access deny all

#base
visible_hostname www.111cn.net
cache_mgr [email protected]
cache_effective_user squid
cache_effective_group squid

error_directory /usr/local/squid/share/errors/Simplify_Chinese
icon_directory /usr/local/squid/share/icons
mime_table /usr/local/squid/etc/mime.conf

cache_replacement_policy lru
#cache_dir
cache_dir aufs /var/cache1 32768 64 64
cache_dir aufs /var/cache2 32768 64 64
cache_mem 2048 MB
max_open_disk_fds 0
#maximum_object_size 512 KB
#maximum_object_size_in_memory 256 KB
maximum_object_size 20 MB
maximum_object_size_in_memory 8 MB

#keepalived
client_persistent_connections off
server_persistent_connections on
#persistent_request_timeout 60 seconds

#memory_pools on
#memory_pools_limit 64 MB

forwarded_for on
log_icp_queries off

via off
httpd_suppress_version_string off

ie_refresh off
tcp_recv_bufsize 32 KB

#acl webservices rep_header Server -i ^linuxtoneWS ^Apache ^nginx
#broken_vary_encoding allow webservices

#hidden the squid header
#reply_header_access Server deny all
#reply_header_access X-Cache deny all
#reply_header_access Warning deny all
#reply_header_access Expires deny all
#reply_header_access Cache-Control deny all
#reply_header_access age deny all
#reply_header_access All deny all

ipcache_size 1024
ipcache_low 90
ipcache_high 95

memory_replacement_policy lru

hosts_file /etc/hosts
request_header_max_size 128 KB

#deny cache
hierarchy_stoplist cgi-bin ? .php
acl QUERY urlpath_regex cgi-bin? .php
cache deny QUERY

#request_body_max_size 0 KB

refresh_pattern ^ftp: 60 20% 10080
refresh_pattern ^gopher: 60 0% 1440
refresh_pattern . 0 20% 1440
refresh_pattern -i .css$ 360 50% 2880 reload-into-ims
refresh_pattern -i .js$ 1440 50% 2880 reload-into-ims
refresh_pattern -i .html$ 720 50% 1440 reload-into-ims
refresh_pattern -i .jpg$ 1440 90% 2880 ignore-reload
refresh_pattern -i .gif$ 1440 90% 2880 ignore-reload
refresh_pattern -i .swf$ 1440 90% 2880 ignore-reload
refresh_pattern -i .jpg$ 1440 50% 2880 ignore-reload
refresh_pattern -i .png$ 1440 50% 2880 ignore-reload
refresh_pattern -i .bmp$ 1440 50% 2880 ignore-reload

refresh_pattern -i .doc$ 1440 50% 2880 ignore-reload
refresh_pattern -i .ppt$ 1440 50% 2880 ignore-reload
refresh_pattern -i .xls$ 1440 50% 2880 ignore-reload
refresh_pattern -i .pdf$ 1440 50% 2880 ignore-reload
refresh_pattern -i .rar$ 1440 50% 2880 ignore-reload
refresh_pattern -i .zip$ 1440 50% 2880 ignore-reload
refresh_pattern -i .txt$ 1440 50% 2880 ignore-reload

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
shutdown_lifetime 5 seconds
strip_query_terms off

#snmp
#snmp_port 3401
#acl snmppublic snmp_orgmunity snsimg
#snmp_access allow snmppublic localhost
#snmp_access deny all

icp_port 0

# logfile
emulate_httpd_log on
#logformat combined %{X-Forwarded-For}>h %ui %un [%tl] “%rm %ru HTTP/%rv” %Hs %<st “%{Referer}>h” “%{User-Agent}>h” %Ss:%Sh
#access_log none
#access_log /data/logs/access.log combined
logformat squid %ts.%03tu %6tr %>a %Ss/%03Hs %<st %rm %ru %un %Sh/%<A %mt
access_log /var/log/squid/access.log squid
#cache_store_log /var/log/squid/store.log
cache_store_log /dev/null
cache_log /var/log/squid/cache.log
logfile_rotate 12

# MISCELLANEOUS
store_objects_per_bucket 15
client_db off

4.创建目录

代码如下

/usr/sbin/groupadd squid
/usr/sbin/useradd -g squid squid
mkdir -p /var/log/squid
chown -R squid:squid /var/log/squid
mkdir -p /var/{cache1,cache2}
chown -R squid:squid /var/{cache1,cache2}

初始化squid的cache目录
/usr/local/squid/sbin/squid -z

启动squid
/usr/local/squid/sbin/squid -D

如果大家不喜欢这样的启动方式,可以自己去找个squid的启动脚本,这里就不放出了.当squid运行起来了之后,大家可以使用下面这个命令来查看命中率:

代码如下
/usr/local/squid/bin/squidclient -p 80 mgr:info

好了,具体其他squid的使用命令就只能你们自己去搜了,就到这里了.