server {
        server_name www.domain.com;
        root /var/www;
        access_log /var/log/nginx/domain.access.log;
        error_log /var/log/nginx/domain.error.log;
        include global/common.conf;
        include global/wordpress.conf;

        location /site1 {
                index index.php;
                rewrite ^/csr/(.*)+$ /site1/index.php?$1;
                access_log /var/log/nginx/site1.access.log;
                error_log /var/log/nginx/site2.error.log;
        }

        location /site2 {
                index index.php;
                rewrite ^/csr/(.*)+$ /site1/index.php?$1;
                access_log /var/log/nginx/site1.access.log;
                error_log /var/log/nginx/site2.error.log;
        }

        location /site3 {
                index index.php;
                rewrite ^/csr/(.*)+$ /site1/index.php?$1;
                access_log /var/log/nginx/site1.access.log;
                error_log /var/log/nginx/site2.error.log;
        }

}