Nginx config for wordpress in subfolder with rewrites for main folder

Server NGINX
1

I have a vbulletin site in root and a wordpress blog in /blog/

the root nginx rewrites all work as they should utilising the dbseo
plugin
for vbulletin to make search engine friendly urls

if i turn on permalinks in wordpress i get a 404 error no matter what i
try.

Could anyone advise what the change should be to be able to use a
different
set of rewrite rules in just the blog folder.

I am hoping to have other wordpress installs for different purposes so
this
will hopefully explain for the future also.

Current domain.conf for nginx

server {
listen 80;
#listen [::]:80 default ipv6only=on;

    server_name www.mydomain.com mydomain.com;
    root /home/username/domains/mydomain.com/public_html;
    access_log /home/username/domains/mydomain.com/logs/access.log;
    error_log /home/username/domains/mydomain.com/logs/error.log;

    index index.php index.html index.htm;
    error_page 404 /404.html;

    location / {
        try_files $uri $uri/ /dbseo.php;
    }

    location ~ ^((?!dbseo).)*\.php$
    {
            rewrite ^/(.*)$ /dbseo.php last;
    }

    # Pass PHP scripts to PHP-FPM
    location ~ \.php$ {
        try_files $uri =403;
        fastcgi_split_path_info ^(/blog)(/.*)$;
        fastcgi_pass unix:/var/run/php5-fpm-username.sock;
        include fastcgi_params;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME

$document_root$fastcgi_script_name;
}

    # Enable browser cache for CSS / JS
    location ~* \.(?:css|js)$ {
        expires 30d;
        add_header Pragma "public";
        add_header Cache-Control "public";
        add_header Vary "Accept-Encoding";
    }

    # Enable browser cache for static files
    location ~*

.(?:ico|jpg|jpeg|gif|png|bmp|webp|tiff|svg|svgz|pdf|mp3|flac|ogg|mid|midi|wav|mp4|webm|mkv|og$
expires 60d;
add_header Pragma “public”;
add_header Cache-Control “public”;
}

    # Deny access to hidden files
    location ~ (^|/)\. {
        deny all;
    }

    # Prevent logging of favicon and robot request errors
    location = /favicon.ico { log_not_found off; access_log off; }
    location = /robots.txt  { log_not_found off; access_log off; }

}

I have tried a load of different options to get this to work.

I have posted these on stackoverflow which is possibly simpler than
posting
again here.
thats here
http://stackoverflow.com/questions/29518899/nginx-config-for-wordpress-in-subfolder-with-rewrites-for-main-folder

Any help w2ould be most appreciated.

I think i just need the basics of how to ignore / include certain rules
for
certain pages.

how do i make /blog/ only use its own rules and ignore everything else.?

Posted at Nginx Forum:

2

sip Wrote:

how do i make /blog/ only use its own rules and ignore everything
else.?

Have you tried a location block for /blog/ at a position before other
blocks
start handling things ?

Posted at Nginx Forum: