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    <title>Nginx on 极客老墨</title>
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      <title>Nginx Bad Gateway和no live upstreams错误分析</title>
      <link>https://blog.hankmo.com/posts/devops/nginx-bad-gateway-no-live-upstreams/</link>
      <pubDate>Sat, 07 Oct 2023 00:00:00 +0000</pubDate>
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      <description>Nginx返回 `502 Bad Gateway` 时，注意观察其错误日志，通过日志来分析是请求超时或服务不可用导致的，如果输出 `no live upstreams while connecting to upstream` 说明并发请求量大，Nginx将服务下线后仍有请求被转发到下线服务，也可能是服务资源紧缺导致响应不及时，超时后所致。适当的增加 `max_fails` 参数可以有效避免由于极端情况服务被下线造成 `502` 问题。</description>
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      <title>Nginx学习——nginx的下载、安装和启动</title>
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      <pubDate>Mon, 15 May 2017 17:28:11 +0000</pubDate>
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      <description>Nginx作为轻量级、高并发、高性能的web服务器，目前使用非常广泛。本文讲解了windows和linux下nginx的下载、安装和启动、停止等常规操作，一般建议Nginx部署在Linux服务器上，以发挥其高并发、高性能的特点。</description>
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