Upgrading from 0.7.19 ?

[George]

Hi guys, I've been running very old 0.7.19 nginx with virtual host configuration for ages now with nginx.conf listed below. But it's time to upgrade to 0.8.20 so what's the best way to do this AND be able to backup 0.7.19 nginx (which specific files) so I could ASAP switch back to 0.7.19 to get things running if I mess up 0.8.20 install ?  

Also not sure if my settings in conf files below are correct for 0.8.20 syntax/format etc wise ?

Any help is appreciated :)

nginx.conf


user					nobody nobody;
worker_processes			2;
#worker_cpu_affinity 0101 1010;
pid					/usr/local/nginx/logs/nginx.pid;


events {
	worker_connections		1024;
	use epoll;
}


http {
	include				mime.types;
	default_type			application/octet-stream;

	log_format			main	'$remote_addr - $remote_user [$time_local] $request '
						'"$status" $body_bytes_sent "$http_referer" '
						'"$http_user_agent" "$http_x_forwarded_for"';

	#access_log			/usr/local/nginx/logs/access.log main;
	error_log			/usr/local/nginx/logs/error.log debug;
	#google_perftools_profiles	/var/spool/nginx/profile;

	sendfile			on;
	tcp_nopush			on;

	gzip				on;
	gzip_min_length			1100;
	gzip_buffers			16 8k;
	gzip_http_version		1.0;
	gzip_comp_level			1;
	gzip_proxied			any;
	gzip_types			text/plain text/css text/javascript text/xml
					application/x-javascript application/xml application/xml+rss;
 
      include /usr/local/nginx/conf/vhosts/*.conf;

}


example vhosts/mydomain.conf


server {
	listen	xxx.xxx.xxx.xxx:80;
	server_name	mydomain.com;
	access_log	/usr/local/nginx/logs/mydomain.com.access.log main;
	error_log	/usr/local/nginx/logs/mydomain.com.error.log notice;
	#client_header_buffer_size 8k;
	#client_body_buffer_size 256k;
	keepalive_timeout     10 10;

	error_page 404		   = /error/404.html;
	error_page    502 503 504  = /error/50x_error.html;

	location    /error/50x_error.html {
	    internal;
	}

	root          /home/username/html;
	autoindex on;
	index		  index.php index.html;

	location ~ \.php$ {
		fastcgi_index			index.php;
		fastcgi_pass			127.0.0.1:9000;
		include				fastcgi_params;
		fastcgi_param  SCRIPT_FILENAME  /home/username/html$fastcgi_script_name;
		fastcgi_intercept_errors	on;
		break;
	}

	location ~* \.(jpg|jpeg|gif|css|png|js|ico)$ {
		root                /home/username/html;
		access_log			off;
		expires				30d;
		break;
	}

     ## Serve an empty 1x1 gif _OR_ an error 204 (No Content) for favicon.ico
      location = /favicon.ico {
       #empty_gif;
        return 204;
      }

}



Posted at Nginx Forum: http://forum.nginx.org/read.php?2,14726,14726#msg-14726