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+ 8MW$ m$
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说明:本优化适合apache,nginx,squid多种等web应用,特殊的业务也可能需要略作调整。 45]Ym{]
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[root@c64 ~]# vi /etc/sysctl.conf `I]1l MJ)o
#by sun in 20131001 DLwC5Iir
net.ipv4.tcp_fin_timeout = 2 C:|q'"F
net.ipv4.tcp_tw_reuse = 1 ,mAB)at
net.ipv4.tcp_tw_recycle = 1 xiOv$.@q
net.ipv4.tcp_syncookies = 1 @&nx;K6h
net.ipv4.tcp_keepalive_time =600 d/ 'A\"o+
net.ipv4.ip_local_port_range = 4000 65000 -s?dzX
net.ipv4.tcp_max_syn_backlog = 16384 T U"K#V&u
net.ipv4.tcp_max_tw_buckets = 36000 :IP;FrcMP
net.ipv4.route.gc_timeout = 100 w@gl
net.ipv4.tcp_syn_retries = 1 O+{pF.P#V
net.ipv4.tcp_synack_retries = 1 ims=-1,
net.core.somaxconn = 16384 9H
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net.core.netdev_max_backlog = 16384 e4>L@7
net.ipv4.tcp_max_orphans = 16384 (dO'_s&M]/
#一下参数是对iptables防火墙的优化,防火墙不开会有提示,可以忽略不理。 -Y
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net.ipv4.ip_conntrack_max = 25000000 \>aa8LOe
net.ipv4.netfilter.ip_conntrack_max = 25000000 HwVgT"
net.ipv4.netfilter.ip_conntrack_tcp_timeout_established = 180 }v'PY/d.
net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait = 120 -Fok%iQ'5
net.ipv4.netfilter.ip_conntrack_tcp_timeout_close_wait = 60 ziB]S@U
net.ipv4.netfilter.ip_conntrack_tcp_timeout_fin_wait = 120 =Nv=Q mO
[root@localhost ~]# sysctl –p #使配置文件生效 Z)6nu)
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提示:由于CentOS6.X系统中的模块名不是ip_conntrack,而是nf_conntrack,所以在/etc/sysctl.conf优化时,需要把net.ipv4.netfilter.ip_conntrack_max 这种老的参数,改成net.netfilter.nf_conntrack_max这样才可以。 TYJnQ2m
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即对防火墙的优化,在5.8上是 WV!kA_
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net.ipv4.ip_conntrack_max = 25000000 zoJkDr=jn
net.ipv4.netfilter.ip_conntrack_max = 25000000 @L>NN>?SGQ
net.ipv4.netfilter.ip_conntrack_tcp_timeout_established = 180 OCOO02Wq1
net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait = 120 !ovZ>,1
net.ipv4.netfilter.ip_conntrack_tcp_timeout_close_wait = 60 pD}VB6=
net.ipv4.netfilter.ip_conntrack_tcp_timeout_fin_wait = 120 \Q?|gfJH
复制代码 Zh~Lm
在6.4上是 7p>-oR"
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net.nf_conntrack_max = 25000000 +q_lYGTiO
net.netfilter.nf_conntrack_max = 25000000
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net.netfilter.nf_conntrack_tcp_timeout_established = 180 M_.,c Vk
net.netfilter.nf_conntrack_tcp_timeout_time_wait = 120 J&U0y
net.netfilter.nf_conntrack_tcp_timeout_close_wait = 60 |`t!aG8
net.netfilter.nf_conntrack_tcp_timeout_fin_wait = 120 b\Xu1>
复制代码 7%"\DLA
6.4版本上 qxcBj
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]E8<;t)#
error: "net.bridge.bridge-nf-call-ip6tables"isan unknown key :iNAXy
error: "net.bridge.bridge-nf-call-iptables"isan unknown key ]pP2c[;
error: "net.bridge.bridge-nf-call-arptables"isan unknown key -S3+
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这个错误是由于自动处理可载入的模块bridge没有自动载入,解决办法是自动处理开载入的模块ip_conntrack Z2j*%/
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~md|k
modprobe bridge echo "modprobe bridge">> /etc/rc.local