详解Linux系统配置nginx的负载均衡
<p><strong>详解Linux系统配置nginx的负载均衡</strong></p>
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<strong>负载均衡的几种方式：</strong></p>
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1.轮询：默认按照时间顺序对所有服务器一个一个的访问，如果有服务器宕机，会自动剔除；</p>
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2.weight：服务器的方位几率和weight成正比，这个可以在服务器配置不均的时候进行配置；</p>
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3.ip_hash：对每个请求的ip进行hash计算，并按照一定的规则分配对应的服务器（可解决session共享）；</p>
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4.fair：按照每台服务器的响应时间（rt）来分配请求，rt知道优先分配；</p>
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5.url_hash：按照访问url的hash值来分配请求；</p>
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<strong>NGINX配置文件：</strong></p>
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<code class="bash plain">user nginx;</code>
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<code class="bash plain">worker_processes auto;</code>
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<code class="bash plain">error_log </code><code class="bash plain">/var/log/nginx/error</code><code class="bash plain">.log;</code>
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<code class="bash plain">pid </code><code class="bash plain">/run/nginx</code><code class="bash plain">.pid;</code>
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<code class="bash plain">events {</code>
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<code class="bash spaces"> </code><code class="bash plain">worker_connections 1024;</code>
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<code class="bash plain">}</code>
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<code class="bash plain">http {</code>
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<code class="bash spaces"> </code><code class="bash plain">log_format main </code><code class="bash string">'$remote_addr - $remote_user [$time_local] "$request" '</code>
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<code class="bash spaces"> </code><code class="bash string">'$status $body_bytes_sent "$http_referer" '</code>
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<code class="bash spaces"> </code><code class="bash string">'"$http_user_agent" "$http_x_forwarded_for"'</code><code class="bash plain">;</code>
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<code class="bash spaces"> </code><code class="bash plain">access_log </code><code class="bash plain">/var/log/nginx/access</code><code class="bash plain">.log main;</code>
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<code class="bash spaces"> </code><code class="bash plain">sendfile on;</code>
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<code class="bash spaces"> </code><code class="bash plain">tcp_nopush on;</code>
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<code class="bash spaces"> </code><code class="bash plain">tcp_nodelay on;</code>
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<code class="bash spaces"> </code><code class="bash plain">keepalive_timeout 65;</code>
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<code class="bash spaces"> </code><code class="bash plain">types_hash_max_size 2048;</code>
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<code class="bash spaces"> </code>
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<code class="bash spaces"> </code><code class="bash plain">include blockip.conf; </code><code class="bash comments">#过虑IP</code>
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<code class="bash spaces"> </code><code class="bash plain">include </code><code class="bash plain">/etc/nginx/mime</code><code class="bash plain">.types;</code>
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<code class="bash spaces"> </code><code class="bash plain">default_type application</code><code class="bash plain">/octet-stream</code><code class="bash plain">;</code>
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<code class="bash spaces"> </code><code class="bash comments"># Load modular configuration files from the /etc/nginx/conf.d directory.</code>
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<code class="bash spaces"> </code><code class="bash comments"># See http://nginx.org/en/docs/ngx_core_module.html#include</code>
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<code class="bash spaces"> </code><code class="bash comments"># for more information.</code>
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<code class="bash spaces"> </code><code class="bash plain">include </code><code class="bash plain">/etc/nginx/conf</code><code class="bash plain">.d/*.conf;</code>
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<code class="bash spaces"> </code><code class="bash plain">upstream www.域名.com {</code>
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<code class="bash spaces"> </code><code class="bash plain">server IP1:端口; </code><code class="bash comments">#服务器1</code>
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<code class="bash spaces"> </code><code class="bash plain">server IP2:端口; </code><code class="bash comments">#服务器2</code>
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<code class="bash spaces"> </code><code class="bash plain">ip_hash; </code><code class="bash comments">#负载均衡的规则</code>
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<code class="bash spaces"> </code><code class="bash plain">}</code>
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<code class="bash spaces"> </code><code class="bash plain">server {</code>
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<code class="bash spaces"> </code><code class="bash plain">listen 80 default_server; </code><code class="bash comments">#NGINX 指向的服务域名</code>
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<code class="bash spaces"> </code><code class="bash plain">listen [::]:80 default_server;</code>
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<code class="bash spaces"> </code><code class="bash plain">server_name IP; </code><code class="bash comments">#NGINX 指向的服务器 IP</code>
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<code class="bash spaces"> </code><code class="bash plain">root </code><code class="bash plain">/usr/share/nginx/html</code><code class="bash plain">; </code><code class="bash comments">#NGINX HTML 目录</code>
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<code class="bash spaces"> </code><code class="bash comments"># Load configuration files for the default server block.</code>
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<code class="bash spaces"> </code><code class="bash plain">include </code><code class="bash plain">/etc/nginx/default</code><code class="bash plain">.d/*.conf;</code>
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<code class="bash spaces"> </code><code class="bash plain">location / {</code>
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<code class="bash spaces"> </code><code class="bash plain">proxy_pass http:</code><code class="bash plain">//www</code><code class="bash plain">.域名.com; </code><code class="bash comments">#nginx指向的域名</code>
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<code class="bash spaces"> </code><code class="bash plain">}</code>
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<code class="bash spaces"> </code><code class="bash plain">error_page 404 </code><code class="bash plain">/404</code><code class="bash plain">.html;</code>
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<code class="bash spaces"> </code><code class="bash plain">location = </code><code class="bash plain">/40x</code><code class="bash plain">.html { </code><code class="bash comments">#404页面</code>
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<code class="bash spaces"> </code><code class="bash plain">}</code>
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<code class="bash spaces"> </code><code class="bash plain">error_page 500 502 503 504 </code><code class="bash plain">/500</code><code class="bash plain">.html;</code>
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<code class="bash spaces"> </code><code class="bash plain">location = </code><code class="bash plain">/500</code><code class="bash plain">.html { </code><code class="bash comments">#500页面</code>
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<code class="bash spaces"> </code><code class="bash plain">}</code>
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<code class="bash spaces"> </code><code class="bash plain">}</code>
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<code class="bash plain">}</code>
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感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！</p>
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原文链接：https://my.oschina.net/miger/blog/757617</p>
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