Wordpress, Apache and Nginx: permalinks and cache

Question

I have a server with Ubuntu 14.04.1, Apache at port 8008 and nginx at port 80 as a proxy for Apache. It runs a website based on Wordpress.

I use Wordpress's plugin WP Super Cache with the following settings:

Also I use Permalinks like this:

When I had only Apache at port 80 (nginx was not installed back then), everything was working just fine.

But now (with Apache at 8008 and nginx at 80) the problem is: I can load only title page, like example.com, and other links like example.com/2015/05/16/somepost don't load and return back to the title page example.com.

Here's the nginx website config (/etc/nginx/sites-enabled/mysite):

server {
    listen 80;
    server_name example.com;
    root /var/www;
    index index.php;

    gzip on;
    gzip_disable "msie6";
    gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript;

    location ~ /\. {
            deny all;
    }

    location ~* /(?:uploads|files)/.*\.php$ {
            deny all;
    }

    location ~* ^.+\.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|rss|atom|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ {
            access_log off;
            log_not_found off;
            expires max;
    }

    location / {
        try_files $uri $uri/ /index.php$args;
    }

    location ~ \.php$ {
        proxy_set_header X-Real-IP  $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header Host $host;
        proxy_pass http://127.0.0.1:8008;
    }
}

And that's /var/www/.htaccess:

# BEGIN WordPress

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

# END WordPress

What am I doing wrong? I tried the following advices:

• https://stackoverflow.com/questions/23936618/500-error-with-nginx-and-wordpress-pretty-permalinks
• https://stackoverflow.com/questions/17282963/wordpress-nginx-preview-post-is-404-not-found-but-old-posts-are-working
• https://stackoverflow.com/questions/27593466/plesk-nginx-wordpress-permanent-links-404-not-found-nginx

But none of them helped.

By the way, http://example.com/wp-admin/ works anytime, so I guess the trouble is related to cache (WP Super Cache).

Answer 1

After a while researching and experimenting I've managed to find solution:

1. Install plugin Permalink Fix & Disable Canonical Redirects Pack;
2. Change the location / block in my config (the one I posted above) like that:

location / {
    try_files $uri $uri/ /index.php?q=$uri&$args;
}