问Nginx大流量负载均衡

EN

user  nginx;
worker_processes 10;

worker_rlimit_nofile 200000;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  10000;
    use epoll;
    multi_accept on;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  /var/log/nginx/access.log  main;
    access_log off;

    sendfile        on;
    tcp_nopush     on;

    keepalive_timeout  65;
    reset_timedout_connection on;

    gzip  on;
    gzip_comp_level 1;
    include /etc/nginx/conf.d/*.conf;
} 

#Set the upstream (servers to load balance)
#HTTP stream
upstream adsbar {
  least_conn;
  server xx.xx.xx.34 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.36 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.37 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.39 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.40 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.42 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.43 max_fails=2 fail_timeout=15s;
}      

#HTTPS stream
upstream adsbar-ssl {
  least_conn;
  server xx.xx.xx.34:443 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.36:443 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.37:443 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.39:443 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.40:443 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.42:443 max_fails=2 fail_timeout=15s;
  server xx.xx.xx.43:443 max_fails=2 fail_timeout=15s;
}

#HTTP
server {
  listen xxx.xxx.xxx.xxx:8080;
  server_name www.mycompany.com;
  location / {
      proxy_set_header Host $host;
      # So the original HTTP Host header is preserved
      proxy_set_header X-Real-IP $remote_addr;
      # The IP address of the client (which might be a proxy itself)
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_pass http://adsbar;
  }
}

#HTTPS
server {
  listen xxx.xxx.xxx.xxx:8443;
  server_name www.mycompany.com;
  ssl on;
  ssl_certificate /etc/pki/tls/certs/mycompany.crt;
  # Path to an SSL certificate;
  ssl_certificate_key /etc/pki/tls/private/mycompany.key;
  # Path to the key for the SSL certificate;
  location / {
      proxy_set_header Host $host;
      # So the original HTTP Host header is preserved
      proxy_set_header X-Real-IP $remote_addr;
      # The IP address of the client (which might be a proxy itself)
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_pass https://adsbar-ssl;
  }
}

server {
    listen xxx.xxx.xxx.xxx:61709;
    location /nginx_status {
        stub_status on;
        access_log off;
        allow 127.0.0.1;
        deny all;
    }
} 

# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 

0 is disabled, 1 is enabled.  See sysctl(8) and
# sysctl.conf(5) for more details.

# Controls IP packet forwarding
net.ipv4.ip_forward = 0

# Controls source route verification
net.ipv4.conf.default.rp_filter = 1

# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0

# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 1

# Controls whether core dumps will append the PID to the core filename
# Useful for debugging multi-threaded applications
kernel.core_uses_pid = 1

# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 1

# Controls the maximum size of a message, in bytes
kernel.msgmnb = 65536

# Controls the default maxmimum size of a mesage queue
kernel.msgmax = 65536

# Controls the maximum shared segment size, in bytes
kernel.shmmax = 68719476736

# Controls the maximum number of shared memory segments, in pages
kernel.shmall = 4294967296

fs.file-max = 120000
net.ipv4.ip_conntrack_max = 131072
net.ipv4.tcp_max_syn_backlog = 8196
net.ipv4.tcp_fin_timeout = 25
net.ipv4.tcp_keepalive_time = 3600
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_rmem = 4096 25165824 25165824
net.core.rmem_max = 25165824
net.core.rmem_default = 25165824
net.ipv4.tcp_wmem = 4096 65536 25165824
net.core.wmem_max = 25165824
net.core.wmem_default = 65536
net.core.optmem_max = 25165824
net.core.netdev_max_backlog = 2500
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1