varnish nginx wordpress

http://stackoverflow.com/questions/8026763/nginx-port-in-redirect-not-working

# Add trailing slash to */wp-admin requests.
rewrite /wp-admin$ $scheme://$host$uri/ permanent;

https://codex.wordpress.org/Nginx

80 varnish
8080 nginx
の場合に上記の設定をしないと

http://example.com/wp-admin
が
http://example.com:8080/wp-admin/
になってしまう。