###CentOS TIME_WAIT太多
#查看连接数 netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}' ##解决方法 cat >>/etc/sysctl.conf <<EOF net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_fin_timeout = 10 EOF sysctl -p