squid 3.5 配置正向代理缓存加速
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配置文件如下# 监听127.0.0.1:8080 http_port 127.0.0.1:8080 accel allow-direct acl manager proto cache_object http_access allow manager # 对日志文件和pid文件位置进行设置 # cache_store_log none # cache_access_log /var/log/squid/access.log # cache_log /var/log/squid/cache.log # pid_filename /var/run/squid.pid # 取消对代理阵列的支持 icp_port 8080 # 允许所有流量 http_access allow all # 关闭该项，这样就可以显示用户的整个请求内容 strip_query_terms off # 64M内存缓存，2G硬盘做缓存，可自行调整 cache_mem 512 MB cache_swap_low 90 cache_swap_high 95 cache_dir ufs /var/spool/squid 10000 16 256 #10G 磁盘缓存 目录下分16个级别，每隔级别分256个目录 # swap 性能微调 half_closed_clients off maximum_object_size 65536 KB minimum_object_size 0 KB # 设置内存中最大可缓存的最大文件大小 maximum_object_size_in_memory 512 KB # 内存和硬盘cache的替换策略 memory_replacement_policy lru cache_replacement_policy lru # http1.0的vary信息里带有过期时间的话，squid还是不能缓存住。打开此选项提高缓存命中率 vary_ignore_expire on # 合并回源，多个回源流量变成一个回源,这个在大文件时,也比较有用。 collapsed_forwarding on # 一些优化参数 refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern (cgi-bin|\?) 0 0% 0 refresh_pattern \.(jpg|png|gif|mp3|xml|html|htm|css|js) 1440 80% 2880 ignore-reload refresh_pattern ^/forum/viewthread.php 1440 1000% 1440 ignore-reload refresh_pattern . 0 20% 4320 refresh_pattern -i .html 1440 90% 129600 reload-into-ims refresh_pattern -i .shtml 1440 90% 129600 reload-into-ims refresh_pattern -i .hml 1440 90% 129600 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 1440 90% 129600 reload-into-ims refresh_pattern -i .css$ 1440 90% 2880 reload-into-ims 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 # 禁止代理识别 via off forwarded_for off request_header_access From deny all request_header_access Server deny all request_header_access WWW-Authenticate deny all request_header_access Link deny all request_header_access Cache-Control deny all request_header_access Proxy-Connection deny all request_header_access X-Cache deny all request_header_access X-Cache-Lookup deny all request_header_access Via deny all request_header_access X-Forwarded-For deny all request_header_access Pragma deny all request_header_access Keep-Alive deny all
系统内核优化
net.ipv6.conf.all.accept_ra = 2 net.core.default_qdisc = fq net.ipv4.tcp_congestion_control = bbr net.ipv4.ip_forward = 0 net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.default.accept_source_route = 0 kernel.sysrq = 0 kernel.core_uses_pid = 1 net.ipv4.tcp_syncookies = 1 kernel.msgmnb = 65536 kernel.msgmax = 65536 kernel.shmmax = 68719476736 kernel.shmall = 4294967296 net.ipv4.tcp_max_tw_buckets = 10000 net.ipv4.tcp_sack = 1 net.ipv4.tcp_window_scaling = 1 net.ipv4.tcp_rmem = 4096 87380 4194304 net.ipv4.tcp_wmem = 4096 16384 4194304 net.core.wmem_default = 8388608 net.core.rmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.core.netdev_max_backlog = 262144 net.core.somaxconn = 262144 net.ipv4.tcp_max_orphans = 3276800 net.ipv4.tcp_max_syn_backlog = 262144 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_synack_retries = 1 net.ipv4.tcp_syn_retries = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_mem = 94500000 915000000 927000000 net.ipv4.tcp_fin_timeout = 1 net.ipv4.tcp_keepalive_time = 15 net.ipv4.ip_local_port_range = 1024 65535
最后配置流量转发
iptables -t nat -I PREROUTING -i ens3 -s ip1/32 -p tcp --dport 80 -j REDIRECT --to-port 8080
意思是把本地ens3 网口的请求流量转发到本地8080 端口上，squid 监听的是本地8080
也可以这样写
# 将 对于 80、443 端口的访问 重定向到 3128 端口 </P><P> iptables -t nat -A PREROUTING -i eth1 -p tcp -s 192.168.0.0/24 --dport 80 -j DNAT --to 192.168.0.1:3128 iptables -t nat -A PREROUTING -i eth1 -p tcp -s 192.168.0.0/24 --dport 443 -j DNAT --to 192.168.0.1:3128
最后这个没试过，慎用
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