Wordpress Nginx Permalink从普通到postname

我正在努力改变 http://sitename/?p=123 到 http://sitename/postname 使用重写规则,但未找到错误404。这是我的nginx服务器块代码:

server {

        listen 80;
        listen 443 ssl;

        root /var/www/sitename/html;
        index index.php index.html index.htm;

        server_name sitename www.sitename;
        client_max_body_size 10M;

        # Certificates handled by CertBot

        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
                fastcgi_index index.php;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                include fastcgi_params;
        }

        location / {
                server_name sitename www.sitename;
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                # try_files $uri $uri/ /index.php$is_args$args;
                # rewrite ^ http://$server_name$request_uri permanent;
                rewrite ^/(.*)$ http://$server_name/$1 permanent;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules
                # root /data/www;
                # index index.html index.htm;
        }
}

我想使用重写,所以我将前端的https重定向到http和wp admin,wp登录为https,由Wordpress处理。

我怎样才能修复它?