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所属分类：Nginx
Nginx负载均衡的应用很广，很多场景下都在使用这种架构。
环境如下：
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1 2 3 |
192.168.1.100 (master node) server1 192.168.1.109 (slave) server2 192.168.1.106 (slave) server3 |
安装nginx
在上面三台服务器上，分别安装nginx
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1 |
yum install nginx |
配置nginx
在上面三台服务器上，分别配置nginx
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user nginx; worker_processes 1; error_log /var/log/nginx_error.log crit; worker_rlimit_nofile 8192; events { worker_connections 1024; # you might need to increase this setting for busy servers use epoll; # Linux kernels 2.6.x change to epoll } http { server_names_hash_max_size 2048; server_names_hash_bucket_size 512; server_tokens off; include mime.types; default_type application/octet-stream; sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 10; # Gzip on gzip on; gzip_min_length 1100; gzip_buffers 4 32k; gzip_types text/plain application/x-javascript text/xml text/css; ignore_invalid_headers on; client_max_body_size 8m; client_header_timeout 3m; client_body_timeout 3m; send_timeout 3m; connection_pool_size 256; client_header_buffer_size 4k; large_client_header_buffers 4 64k; request_pool_size 4k; output_buffers 4 32k; postpone_output 1460; # Cache most accessed static files open_file_cache max=10000 inactive=10m; open_file_cache_valid 2m; open_file_cache_min_uses 1; open_file_cache_errors on; # Include each virtual host include "/etc/nginx/conf.d/*.conf"; } |
配置虚拟主机
在server2和server3上
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1 |
nano -w /etc/nginx/conf.d/mysite.com.conf |
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
server { access_log off; error_log /var/log/yoursite.com-error.log; listen 80; server_name yoursite.com www.yoursite.com; location ~* .(gif|jpg|jpeg|png|ico|wmv|3gp|avi|mpg|mpeg|mp4|flv|mp3|mid|js|css|wml|swf)$ { root /var/www/yoursite.com; expires max; add_header Pragma public; add_header Cache-Control "public, must-revalidate, proxy-revalidate"; } location / { root /var/www/yoursite.com; index index.php index.html index.htm; } } |
在server1上
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1 |
nano -w /etc/nginx/conf.d/balancer.com.conf |
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 |
upstream balancer { server 192.168.1.100:80 ; server 192.168.1.106:80 ; } server { listen 192.168.1.100:80; server_name yoursite.com; error_log /var/log/yoursite.com-error.log; location / { proxy_pass http://balancer; } } |
重启nginx
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1 |
service nginx restart |
DNS记录
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1 2 |
yoursite.com IN A 192.168.1.100 www IN A 192.168.1.100 |
如果仅仅是为了测试，直接绑定hosts文件。
The master server
之所以叫它master，是由于作为主的负载均衡器使用的。它也可以被用来从slave上请求服务。
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upstream balancer { server 192.168.1.100:80 ; server 192.168.1.106:80 ; } server { listen 192.168.1.100:80; server_name yoursite.com; error_log /var/log/yoursite.com-error.log; location / { proxy_pass http://balancer; } } |
另一种场景，负载均衡器同时做为请求
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server { access_log off; error_log /var/log/yoursite.com-error.log; listen 127.0.01:80; server_name yoursite.com www.yoursite.com; location ~* .(gif|jpg|jpeg|png|ico|wmv|3gp|avi|mpg|mpeg|mp4|flv|mp3|mid|js|css|wml|swf)$ { root /var/www/yoursite.com; expires max; add_header Pragma public; add_header Cache-Control "public, must-revalidate, proxy-revalidate"; } location / { root /var/www/yoursite.com; index index.php index.html index.htm; } } upstream balancer { server 192.168.1.100:80 ; server 192.168.1.106:80 ; server 127.0.0.1:80 ; } server { listen 192.168.1.100:80; server_name yoursite.com; error_log /var/log/yoursite.com-error.log; location / { proxy_pass http://balancer; } } |
参考文档：
- http://nginx.org/en/docs/http/load_balancing.html
- http://wiki.nginx.org/HttpUpstreamModule
- http://wiki.nginx.org/LoadBalanceExample
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02/04/2015 下午 10:26 沙发
博主，这三台都是代理吗？
listen 127.0.01:80 少了个点。而且没有分发给109机器呢。