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  • nginx问题之nginx: could not build server_names_hash, you should increase server_names_hash_bucket_size解决方案

    昨天在nginx上部署了一个网站后,发现访问不了,再去访问之前部署的网站,发现都访问不了了,去看下下nginx,发现nginx服务停止了,没有在运行,重启了下服务,发现还是一样,就去看了下nginx的日志,发下下面这样的提示:

    看到什么server_names_hash_bucket_size之类的,我猜测是部署网站的时候,起的主机名称太长了,改小后果然,重启nginx,马上就好了。

    解决方案:

     edit the http{} nginx configuration

    http {
        server_names_hash_bucket_size 64;
        ...
    }
    • The default value of server_names_hash_bucket_size depends on the size of the processor’s cache line
    • If a large number of server names are defined, or unusually long server names are defined, tuning the server_names_hash_max_size and server_names_hash_bucket_size directives at the http level may become necessary.
    • If the default value of server_names_hash_bucket_size used at the server is not enough, means nginx complained with could not build the server_names_hash, you should increase server_names_hash_bucket_size: 32, the directive value should be increased to the next power of two (e.g. in this case to 64).
    • If a large number of server names are defined, and nginx complained with the following error could not build the server_names_hash, you should increase either server_names_hash_max_size: 512 or server_names_hash_bucket_size: 32. try to set server_names_hash_max_size to a number close to the number of server names. Only if this does not help, or if nginx’s start time is unacceptably long, try to increase server_names_hash_bucket_size.
    • The hash bucket size parameter is aligned to the size that is a multiple of the processor’s cache line size
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  • 原文地址:https://www.cnblogs.com/Steven-shi/p/8241162.html
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