Varnish help on setting up for multiple internal webservers

kegler

php: /pkg_edit.php: The command '/usr/local/etc/rc.d/varnish.sh' returned exit code '2', the output was 'kern.ipc.nmbclusters: 65536 sysctl: kern.ipc.nmbclusters: Invalid argument kern.ipc.somaxconn: 16384 -> 16384 kern.maxfiles: 131072 -> 131072 kern.maxfilesperproc: 104856 -> 104856 kern.threads.max_threads_per_proc: 4096 -> 4096 storage_malloc: max size 1024 MB. Message from VCC-compiler: Expected ';' got '/' (program line 369), at (input Line 28 Pos 26) .url = ""/""; –-----------------------#--- In backend specification starting at: (input Line 21 Pos 1) backend kegapp33BACKEND { #######------------------ Running VCC-compiler failed, exit 1 VCL compilation failed'

saw this in my log… but i dont quite understand what went wrong

and i kvm into my pfsense and saw this on the screen.... seems like its stucked at the loading of varnish....

i think i messed up the pfsense somewhere

marcelloc

Remove quotes from your backend Test url

.url = ""/"";

kegler

omg…it worked now...thank you very much....

canefield

@marcelloc:

Each backend means a webserver

inside each configuration, you must provide:

Backend name = WindowsServer

Ip Address = 192.168.1.4

Port = 80 <– Q

Probe URL = "/"(if your server has a valid page on "/")

Probe Interval = 5

Probe Timeout = 1

Probe window = 5

Probe Threshold = 3

Q:
Can I enter multiple listening ports e.g. port: "80, 443"? Or should I configure that host several times according to how many ports it is listening on?

Thanks,
Canefield

marcelloc

I think you need one port for each config as varnish is going to check backend health as well send traffic based on this port.

Keep in mind That varnish implemets http balance/cache only. If you what to balance https as well, haproxy can do this.

Pound and relayd can do client/firewall ssl comunication and then forward client request to varnish, but there is no gui options for this yet.

Landmine

Hate to jump on someone else's thread, but I've gone threw all the same motions, but still no results.

web1.domain.com
web2.domain.com

All end up pointing to the pfSense login, so my question is simply this… What IP do you point the Rule to? the pfSense box that host Varnish?

marcelloc

Did you changed pfsense gui port?
This current varnish gui implementation listens deamon on all interfaces.

Landmine

I did now and it works!

Guess next time I need to slow down and read all the helpful text.

Thank you

Landmine

Correction, it was working. I didnt change anything and I'm getting the 503 errors again :(

–---------- Update ------------

I only get the 503 error on 1 of the 2 domains.

------------ Update ------------

Removing the Backend mapping with the http:// on it seemed to fix the issue.

------------ Update ------------

Down again after about 30 seconds. >:(

marcelloc

That's probably a backend health url check problem.

Add varnish widget to dashboard to see backend status.

The 503 error means could not find any available backend.

Also try to see backend configuration file on view configuration.

Landmine

Here is my config


# Varnish configuration file
# Automatically generated by the pfSense package system

# This file is located in /var/etc/default.vcl

sub vcl_error {
		if (obj.status == 503 && req.restarts < 1) {
			restart;
		}

	set obj.http.Content-Type = "text/html; charset=utf-8";
	synthetic {"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<title>"} obj.status " " obj.response {"</title>

 **We are very sorry but an error occurred during this request.** 

Please press refresh in your browser to try again.

Varnish Error "} obj.status " " obj.response {"

"} obj.response {"

### Guru Meditation:

XID: "} req.xid {"

"};
	return(deliver);

}

backend MinecraftBACKEND {
	# used in catch_all 
	.host = "10.0.0.50";
	.port = "80";
	.first_byte_timeout = 300s;
	.connect_timeout = 25s;
	.probe = {
		.url = "/index.php";
		.interval = 5s;
		.timeout = 3s;
		.window = 5;
		.threshold = 3;
	}
}

sub vcl_recv {

	#BASIC VCL RULES SETTING
	#Fix gzip compression
	if (req.http.Accept-Encoding) {
	if (req.url ~ "\.(gif|jpg|jpeg|bmp|png|ico|img|tga|wmf|gz|tgz|bz2|tbz|mp3|ogg)$") {
		unset req.http.Accept-Encoding;
		}
	else if (req.http.Accept-Encoding ~ "gzip") {
		set req.http.Accept-Encoding = "gzip";
		}
	else if (req.http.Accept-Encoding ~ "deflate") {
		set req.http.Accept-Encoding = "deflate";
		}
	else	{
		unset req.http.Accept-Encoding;
		}
	}
	#set client balance identity
	set client.identity = client.ip;

	#set X-forward
	set req.http.X-Forwarded-For = client.ip;

	if (req.http.host == "minecraft.domain.com") {
		set req.backend = MinecraftBACKEND;
	} 

	#respect client wish to refresh the page
	if (req.http.Pragma ~ "no-cache")
		{
		return(pass);
		}

	#BASIC VCL RULES ACTIONS
	#Disable post cache
	if (req.request == "POST") {
		return(pass);
		}
	#Enable static cache
	if (req.request=="GET" && req.url ~ "\.(css|js|txt|zip|rtf|flv|swf|html|htm)$") {
		return(pass);
		}
	if (req.request=="GET" && req.url ~ "\.(gif|jpg|jpeg|bmp|png|ico|img|tga|wmf|mp3|ogg)$") {
		return(pass);
		}
	#Disable session cache
	if (req.http.Cookie && req.http.Cookie ~ "(PHPSESSID|phpsessid)") {
		return(pass);
		}
	if (req.http.Cookie && req.http.Cookie ~ "(JSESSION|jsession)") {
		return(pass);
		}
	if (req.http.X-Requested-With == "XMLHttpRequest" || req.url ~ "nocache") {
		return(pass);
		}
	#Be rfc2616 compliant
	if (req.request ~ "^(GET|HEAD|PUT|POST|TRACE|OPTIONS|DELETE)$") {
		return(lookup);
		}
	else	{
		return(pipe);
		}

	return(lookup);
}

sub vcl_pipe {

	# If we don't set the Connection: close header, any following
	# requests from the client will also be piped through and
	# left untouched by varnish. We don't want that.
	set req.http.connection = "close";
	# Note: no "pipe" action here - we'll fall back to the default
	# pipe method so that when any changes are made there, we
	# still inherit them.

}

sub vcl_fetch {

	#Disable cache when backend is starting a session
	if (beresp.http.Set-Cookie && beresp.http.Set-Cookie ~ "(PHPSESSID|phpsessid)") {
		return(pass);
		}
	if (beresp.http.Set-Cookie && beresp.http.Set-Cookie ~ "(JSESSION|jsession)") {
		return(pass);
		}
	if (beresp.http.X-Requested-With == "XMLHttpRequest" || req.url ~ "nocache") {
		return(pass);
		}

	# Varnish respects the wishes of the backend application.
	if (beresp.http.Pragma ~ "no-cache" || beresp.http.Cache-Control ~ "(no-cache|no-store|private)") {
	return(pass);
	}
    ## If the request to the backend returns a code other than 200, restart the loop
    ## If the number of restarts reaches the value of the parameter max_restarts,
    ## the request will be error'ed.  max_restarts defaults to 4.  This prevents
    ## an eternal loop in the event that, e.g., the object does not exist at all.
    if (beresp.status != 200 && beresp.status != 403 && beresp.status != 404 && 
    	beresp.status != 303 && beresp.status != 302 && beresp.status != 301 && beresp.status != 401 ) {
		restart;
        }

	return(deliver);
}

sub vcl_deliver {
	##set resp.http.X-Served-By = server.hostname;
  	if (obj.hits > 0) {
    	set resp.http.X-Cache = "HIT";	
    	set resp.http.X-Cache-Hits = obj.hits;
  	} else {
    	set resp.http.X-Cache = "MISS";	
  	}
	return(deliver);
}

marcelloc

can you try to access backend test url?

http://10.0.0.50/index.php

Also, what you get on dashboard varnish widget?

Landmine

The URL works get when I'm at home and here is a pic of what the widget looks like.

Thank you for taking the time to help me.

marcelloc

Varnish could not get this url from your web server.

Can you try an static html, a full http request or something else?

Landmine

So far so good. Now if I wanted to add more servers to the list, I'd basically copy the settings and just change the Backend name, IP and Mapping?

marcelloc

Yes. :)

Just don't forget to check backend status on Dashboard.

normtodd

im having a strange issue that im sure is something easy that im not doing - im pretty sure everthing is working vis a vis varnish, but i am not getting any data on the varnish widget except that the backend is up and running - everything else (cache hits, cache hits pass, cache missed, conn accepted, req. received, and uptime) are empty. ive attached a picture of the widget from the dashboard to illustrate.

right now i only have one machine (an atmail mail server) behind pfsense/varnish and want to confirm that everything is working before i deploy more machines behind pfsense.

here is my varnish config -

# Varnish configuration file
# Automatically generated by the pfSense package system

# This file is located in /var/etc/default.vcl

sub vcl_error {
		if (obj.status == 503 && req.restarts < 1) {
			return(restart);
		}

	set obj.http.Content-Type = "text/html; charset=utf-8";
	synthetic {"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<title>"} + obj.status + " " + obj.response + {"</title>

# Error "} + obj.status + " " + obj.response + {"

"} + obj.response + {"

### Guru Meditation:

XID: "} + req.xid + {"

* * *

Varnish cache server

138	"};
	return(deliver);

}

backend atmailBACKEND {
	# used in catch_all 
	.host = "192.168.20.5";
	.port = "80";
	.first_byte_timeout = 300s;
	.connect_timeout = 25s;
	.probe = {
		.url = "/";
		.interval = 5s;
		.timeout = 1s;
		.window = 5;
		.threshold = 3;
	}
}

sub vcl_recv {

	#BASIC VCL RULES SETTING
	#Fix gzip compression
	if (req.http.Accept-Encoding) {
	if (req.url ~ "\.(gif|jpg|jpeg|bmp|png|ico|img|tga|wmf|gz|tgz|bz2|tbz|mp3|ogg)$") {
		unset req.http.Accept-Encoding;
		}
	else if (req.http.Accept-Encoding ~ "gzip") {
		set req.http.Accept-Encoding = "gzip";
		}
	else if (req.http.Accept-Encoding ~ "deflate") {
		set req.http.Accept-Encoding = "deflate";
		}
	else	{
		unset req.http.Accept-Encoding;
		}
	}
	#set client balance identity
	set client.identity = client.ip;

	#set X-forward
	set req.http.X-Forwarded-Varnish = client.ip;

	if (req.http.host == "www.coldhardmath.com") {
		set req.backend = atmailBACKEND;
	} 

	#respect client wish to refresh the page
	if (req.http.Pragma ~ "no-cache")
		{
		return(pass);
		}

	#BASIC VCL RULES ACTIONS
	#Disable post cache
	if (req.request == "POST") {
		return(pass);
		}
	#Disable session cache
	if (req.http.Cookie && req.http.Cookie ~ "(PHPSESSID|phpsessid)") {
		return(pass);
		}
	if (req.http.Cookie && req.http.Cookie ~ "(JSESSION|jsession)") {
		return(pass);
		}
	if (req.http.X-Requested-With == "XMLHttpRequest" || req.url ~ "nocache") {
		return(pass);
		}
	#Enable static cache
	if (req.request=="GET" && req.url ~ "\.(css|js|txt|zip|pdf|rtf|flv|swf|html|htm)$") {
		unset req.http.cookie;
		return(lookup);
		}
	if (req.request=="GET" && req.url ~ "\.(gif|jpg|jpeg|bmp|png|ico|img|tga|wmf|mp3|ogg)$") {
		unset req.http.cookie;
		return(lookup);
		}
	#Be rfc2616 compliant
	if (req.request ~ "^(GET|HEAD|PUT|POST|TRACE|OPTIONS|DELETE)$") {
		return(lookup);
		}
	else	{
		return(pipe);
		}

	return(lookup);
}

sub vcl_pipe {

	# If we don't set the Connection: close header, any following
	# requests from the client will also be piped through and
	# left untouched by varnish. We don't want that.
	set req.http.connection = "close";
	# Note: no "pipe" action here - we'll fall back to the default
	# pipe method so that when any changes are made there, we
	# still inherit them.

}
sub vcl_hit {
	return (deliver);
}

sub vcl_miss {
	return (fetch);
}

sub vcl_fetch {
	set beresp.do_stream = true;

	#Disable cache when backend is starting a session
	if (beresp.http.Set-Cookie && beresp.http.Set-Cookie ~ "(PHPSESSID|phpsessid)") {
		return(hit_for_pass);
		}
	if (beresp.http.Set-Cookie && beresp.http.Set-Cookie ~ "(JSESSION|jsession)") {
		return(hit_for_pass);
		}
	if (beresp.http.X-Requested-With == "XMLHttpRequest" || req.url ~ "nocache") {
		return(hit_for_pass);
		}

	# Varnish respects the wishes of the backend application.
	if (beresp.http.Pragma ~ "no-cache" || beresp.http.Cache-Control ~ "(no-cache|no-store|private)") {
	return(hit_for_pass);
	}
    ## If the request to the backend returns a code other than 200, restart the loop
    ## If the number of restarts reaches the value of the parameter max_restarts,
    ## the request will be error'ed.  max_restarts defaults to 4.  This prevents
    ## an eternal loop in the event that, e.g., the object does not exist at all.
    if (beresp.status != 200 && beresp.status != 403 && beresp.status != 404 && 
    	beresp.status != 303 && beresp.status != 302 && beresp.status != 301 && beresp.status != 401 ) {
		return(restart);
        }

	set beresp.grace = 60s;
		return(deliver);
}

sub vcl_deliver {
	##set resp.http.X-Served-By = server.hostname;
  	if (obj.hits > 0) {
    	set resp.http.X-Cache = "HIT";	
    	set resp.http.X-Cache-Hits = obj.hits;
  	} else {
    	set resp.http.X-Cache = "MISS";	
  	}
	return(deliver);
}

sub vcl_init {
	return (ok);
}

sub vcl_fini {
	return (ok);
}

im sure there is something very simple that im missing and ive been staring at this so long im missing the forest staring at the trees.

anyone have any ideas?

all the best and thanks in advance
NT

![Screen Shot 2012-04-13 at 2.53.37 PM.jpg](/public/imported_attachments/1/Screen Shot 2012-04-13 at 2.53.37 PM.jpg)
![Screen Shot 2012-04-13 at 2.53.37 PM.jpg_thumb](/public/imported_attachments/1/Screen Shot 2012-04-13 at 2.53.37 PM.jpg_thumb)

marcelloc

Are you sure you do not have any nat or pfsense gui on port 80?

normtodd

thanks marcelloc for responding and for all of your wonderful work on pfsense

pfsense gui is on :81 and i removed the nat forwarding to port 80, just adding a rule on the wan opening port 80 (toward varnish)

marcelloc

@normtodd:

just adding a rule on the wan opening port 80 (toward varnish)

Without this rule, varnish will get no traffic. :)