1、启动容器:
docker run --name <容器名称> -d -p <主机端口:容器端口> <镜像名称>
-d:后台运行
-p:端口映射
举例:docker run --name nginx-test -d -p 80:80 nginx
2、安装nginx
docker run --name nginx-test -d -p 80:80 nginx
3、优化nginx万级并发
3.1、系统层面
1、调整同时打开文件数量
ulimit -n 20480
2、TCP最大连接数(somaxconn)
echo 10000 > /proc/sys/net/core/somaxconn
3、TCP连接立即回收、回用(recycle、reuse)
echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse
echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle
4、不做TCP洪水抵御
echo 0 > /proc/sys/net/ipv4/tcp_syncookies
也可以直接使用优化后的配置,在/etc/sysctl.conf中加入:
net.core.somaxconn = 20480
net.core.rmem_default = 262144
net.core.wmem_default = 262144
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 4096 4096 16777216
net.ipv4.tcp_wmem = 4096 4096 16777216
net.ipv4.tcp_mem = 786432 2097152 3145728
net.ipv4.tcp_max_syn_backlog = 16384
net.core.netdev_max_backlog = 20000
net.ipv4.tcp_fin_timeout = 15
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_max_orphans = 131072net.ipv4.tcp_syncookies = 0
使用:sysctl -p 生效
3.2、nginx层面
worker_processes 1;
worker_rlimit_nofile 20000; events {
use epoll;
worker_connections 20000; multi_accept on;
}
http {
keepalive_timeout 0;
}