如果您使用的是Varnish，而没有看到管理栏，那是因为您可能在/etc/varnish/default.vcl 看起来是这样的：

sub vcl_recv {
    if (!(req.url ~ "wp-(login|admin)")) {
        unset req.http.cookie;
    }
}

有几种不同的处理方式，而且各不相同。您可以检查特定的cookie名称、URL字符串等。

我也遇到了同样的问题，所以我更新了/etc/varnish/default。vcl到这一点-很难说我现在是否允许了太多的cookie（？我可能只在登台而不是生产时使用它），但它让我重新获得了工具栏！

# Drop any unnecessary cookies sent to Wordpress.
sub vcl_recv {
   // pages that require cookies
   if ((req.url ~ "^/sqlstuff") || (req.url ~ "wp-(login|admin)")) {
       return (pass);
   }

   // unset any cookies we don\'t want to keep
   if (req.http.cookie && !(req.http.cookie ~ "(wordpress_|wp-settings-)")) {
       unset req.http.cookie;
   }
}

# Drop any unnecessary cookies Wordpress tries to send back to the client.
sub vcl_fetch {
   // pages that require cookies
   if ((req.url ~ "^/sqlstuff") || (req.url ~ "wp-(login|admin)")) {
       return (hit_for_pass);
   }

   // unset any cookies we don\'t want to keep
   if (req.http.cookie && !(req.http.cookie ~ "(wordpress_|wp-settings-)")) {
       unset beresp.http.set-cookie;
   }
}