后端 production 容器负载均衡

[Triple-Z]

使用裸机 NGINX 对 alpha release 的 production 版容器集群进行负载均衡。

http://nginx.org/en/docs/http/load_balancing.html

[Triple-Z]

使用 least-connected 调度策略做负载均衡，并辅以被动的健康检查。

[Triple-Z]

NGINX 配置文件信息：

nginx.conf:

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
	worker_connections 768;
	# multi_accept on;
}

http {
	
	# SafeU backend server LB settings
	upstream app_servers {
        	least_conn;
        	server 127.0.0.1:8080 max_fails=3 fail_timeout=10s;
        	server 127.0.0.1:8081 max_fails=3 fail_timeout=10s;
	}

	##
	# Basic Settings
	##

	sendfile on;
	tcp_nopush on;
	tcp_nodelay on;
	keepalive_timeout 65;
	types_hash_max_size 2048;
	# server_tokens off;

	# server_names_hash_bucket_size 64;
	# server_name_in_redirect off;

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

	##
	# SSL Settings
	##

	ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
	ssl_prefer_server_ciphers on;

	##
	# Logging Settings
	##

	access_log /var/log/nginx/access.log;
	error_log /var/log/nginx/error.log;

	##
	# Gzip Settings
	##

	gzip on;

	# gzip_vary on;
	# gzip_proxied any;
	# gzip_comp_level 6;
	# gzip_buffers 16 8k;
	# gzip_http_version 1.1;
	# gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

	##
	# Virtual Host Configs
	##

	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;

}

site-available/api.safeu.a2os.club:

server {
	listen 80 default_server;
	listen [::]:80 default_server;
	server_name api.safeu.a2os.club;
	return 301 https://$host$request_uri;
}

server {

	# SSL configuration

	listen 443 ssl default_server;
	listen [::]:443 ssl default_server;

	server_name api.safeu.a2os.club;
	ssl on;
	ssl_certificate 	/etc/letsencrypt/live/api.safeu.a2os.club/fullchain.pem;
	ssl_certificate_key	/etc/letsencrypt/live/api.safeu.a2os.club/privkey.pem;

	location / {
		proxy_pass	http://app_servers;
		proxy_redirect	default;
	}
}