/etc/sysctl.conf 这个文件加上以下这些参数，然后执行sysctl -p更新
net.ipv4.tcp_max_syn_backlog = 4096
net.core.netdev_max_backlog = 2048
net.ipv4.tcp_fin_timeout = 15
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_local_port_range = 1024 65535
vm.swappiness = 10
net.core.somaxconn = 1024
net.ipv4.ip_local_reserved_ports = 2090,9080,9090,10029,22223-22323
vm.dirty_background_bytes = 104857600