Nginx config for wordpress in subfolder with rewrites for main folder

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
for vbulletin to make search engine friendly urls

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

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

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

Current domain.conf for nginx

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

    root /home/username/domains/;
    access_log /home/username/domains/;
    error_log /home/username/domains/;

    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


    # 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 ~*

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
again here.
thats here

Any help w2ould be most appreciated.

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

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

Posted at Nginx Forum:

sip Wrote:

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

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

Posted at Nginx Forum: