#五万连接优化方案
系统限制最多只允许单个端口 61000-32758=28232个线程
echo "10000 65535" > /proc/sys/net/ipv4/ip_local_port_range
#加大打开文件数的限制
vi /etc/security/limits.conf
* soft nofile 65535
* hard nofile 65535
hive - nofile 65535
hive - nproc 65535
#用户进程限制 此步骤需要重启机器生效，可以设置完后再重启
vi /etc/security/limits.d/20-nproc.conf
* soft nproc 62459
root soft nproc 62459
#网络线程优化
vi /etc/sysctl.conf
# Disable IPv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
# Determines how often to check for stale neighbor entries.
net.ipv4.neigh.default.gc_stale_time=120
# Using arp_announce/arp_ignore to solve the ARP Problem
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.all.arp_announce=2
vm.swappiness = 0
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_max_syn_backlog = 1024
net.ipv4.tcp_synack_retries = 2
net.ipv4.conf.lo.arp_announce=2
net.ipv4.tcp_keepalive_time = 1800
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl = 15
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
#本配置如果不配置 最大连接数会有限制
kernel.pid_max=65535
#保存退出
#执行命令生效 /sbin/sysctl -p