重新啟動 Varnish 時出現“‘input’ 處的語法錯誤”；default.vcl 有問題

這是我在大量閱讀和參考後建構的 default.vcl，清漆配置文件：

backend default {
 .host = "127.0.0.1";
 .port = "8080";
}

acl purge {
 "localhost";
}


# Called when a request is received
sub vcl_recv {

 if (req.request == "BAN") {
   if(!client.ip ~ purge) {
     error 405 "Not allowed.";
   }
   ban("req.url ~ "+req.url+" && req.http.host == "+req.http.host);
   error 200 "Banned.";
 }

 if (req.request != "GET" &&
     req.request != "HEAD" &&
     req.request != "PUT" &&
     req.request != "POST" &&
     req.request != "TRACE" &&
     req.request != "OPTIONS" &&
     req.request != "DELETE") {
   return (pipe);
 }

 if (req.request != "GET" && req.request != "HEAD") {
   return (pass);
 }

 #Requests for login, admin, sign up, preview, password protected posts, admin-ajax or other ajax requests
 if (req.url ~ "(wp-login|wp-admin|wp-signup|preview=true|admin-ajax.php)" || req.http.Cookie ~ "(wp-postpass|wordpress_logged_in|comment_author_)" || req.http.X-Requested-With == "XMLHttpRequest" || req.url ~ "nocache" || req.url ~ "(control.php|wp-comments-post.php|wp-login.php|bb-login.php|bb-reset-password.php|register.php)") {
   return (pass);
 }

 remove req.http.cookie;
 return (lookup);

}


# Called after a document has been successfully retrieved from the backend
sub vcl_fetch {

 if (beresp.status == 404 || beresp.status == 503 || beresp.status >= 500) {
   set beresp.ttl = 0m;
   return(hit_for_pass);
 }

 # Requests for login, admin, sign up, preview, password protected posts, admin-ajax or other ajax requests
 if (req.url ~ "(wp-login|wp-admin|wp-signup|preview=true|admin-ajax.php)" || req.http.Cookie ~ "(wp-postpass|wordpress_logged_in|comment_author_)" || req.http.X-Requested-With == "XMLHttpRequest" || req.url ~ "nocache" || req.url ~ "(control.php|wp-comments-post.php|wp-login.php|bb-login.php|bb-reset-password.php|register.php)") {
   return (hit_for_pass);
 }

 # Don't cache .xml files (e.g. sitemap)
 if (req.url ~ "\.(xml)$") {
   set beresp.ttl   = 0m;
 }

 # Cache HTML
 # if (req.url ~ "\.(html|htm)$") {
 #   set beresp.ttl   = 60m;
 # }

 remove beresp.http.set-cookie;
 set beresp.ttl = 24h;
 return (deliver);

}

保存文件後，這是我嘗試重新啟動清漆時發生的情況：

user@host:~$ sudo service varnish restart
* Stopping HTTP accelerator varnishd                                                                                          [fail] 
* Starting HTTP accelerator varnishd                                                                                          [fail] 
Message from VCC-compiler:
Syntax error at
('input' Line 62 Pos 19)
   set beresp.ttl   = 0m;
------------------#---------

Running VCC-compiler failed, exit 1

VCL compilation failed

它本質上意味著我的 default.vcl 中的這一行有問題：

# Don't cache .xml files (e.g. sitemap)
if (req.url ~ "\.(xml)$") {
 set beresp.ttl   = 0m;
}

但我不確定它是什麼。我在這裡做錯了什麼？

錯誤是由於第 62 行上的多餘空格，從配置（default.vcl）中的位置 19 開始，正如錯誤中明確指出的那樣：

   set beresp.ttl   = 0m;
------------------#---------

***注意：***表示#位置。

引用自：https://serverfault.com/questions/540054