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Linux Web服务器连接数控制

平时检测网站服务器连接数情况，常用的如  netstat -ant |awk ‘{print $6}’|sort|uniq -c |sort -n  给出如下统计

TIME_WAIT 3699 CLOSE_WAIT 52 FIN_WAIT1 32 SYN_SENT 1 FIN_WAIT2 2 ESTABLISHED 17 SYN_RECV 45 CLOSING 6

有时会发现大量的TIME_WAIT，SYN_RECV,  CLOSE_WAIT  ,  FIN_WAIT状态，此时需要对系统参数做些调整：

vi /etc/sysctl net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_keepalive_time = 1000 net.ipv4.tcp_fin_timeout = 30 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_sack = 0 net.ipv4.tcp_max_syn_backlog = . . . → Read More: linux-SYN-netstat TIME_WAIT