系统参数修改

1.打开文件数修改
# vi /etc/security/limits.conf(添加如下两行)
* soft nofile 102400
* hard nofile 102400

查看修改是否生效
# ulimit -a

2.tcp连接优化
# vi /etc/sysctl.conf(添加或修改如下6行)

    net.ipv4.ip_local_port_range = 1024 65000
    net.ipv4.ip_forward = 1
   
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_tw_recycle = 1
    net.ipv4.tcp_fin_timeout = 30

  让内核参数生效
# sysctl -p