是不是不能在Nginx中使用变量保存文件路径？

[维格纳的朋友]

server{
        set $certs "/home/test/.letsencrypt/certs";
        listen 443 ssl http2 default_server;
        server_name  test.test.moe; # 域名
        ssl on;
        ssl_certificate ${certs}/test.chained.crt;

用了就会报错的样子

[GroverChouT (精灵猫猫)]

首先，不建议这样用变量：

Variables should not be used as template macros. Variables are evaluated in the run-time during the processing of each request, so they are rather costly compared to plain static configuration. Using variables to store static strings is also a bad idea. Instead, a macro expansion and “include” directives should be used to generate configs more easily and it can be done with the external tools, e.g. sed + make or any other common template mechanism. nginx.org/en/docs/faq/variables_in_config.html

其次，你把这一行

ssl_certificate ${certs}/test.chained.crt;

换成这一行试试

ssl_certificate $certs/test.chained.crt;