nginx日常報錯解決

1. 問題一

報錯：

nginx: [emerg] "proxy_pass" cannot have URI part in location given by regular expression, or inside named location, or inside "if" statement, or inside "limit_except" block in /lingtian/opt/nginx/conf/vhost/test.conf:46

描述：

# 當nginx的location使用～或～*等正則表達式時，proxy_pass不能在后面等url中加 / 去掉location的內容，如：
location ~* /test {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $http_x_forwarded_for;
        proxy_set_header Host  $host;
        proxy_set_header Connection "";
        proxy_pass      http://127.0.0.1/;   # 想要通過此 / 去掉test后去請求http://127.0.0.1，如127.0.0.1/test/123 --> 127.0.0.1/123
}

解決：

# 1. 不使用正則表達式，如下：
location /test {    # 正則不允許，那就不用唄，但是這里不區分大小寫了，⚠️
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $http_x_forwarded_for;
        proxy_set_header Host  $host;
        proxy_set_header Connection "";
        proxy_pass      http://127.0.0.1/;   
}

# 2. 通過 $ 符號傳遞變量
location /test/(.*) {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $http_x_forwarded_for;
        proxy_set_header Host  $host;
        proxy_set_header Connection "";
        proxy_pass      http://127.0.0.1/$1;   # 此處$1是上面location中的括號內的內容
}

# 3. 通過lua來實現，這里不做介紹，有興趣自行學習