Clustering multiple Servers

Fake667 · 1st December 2003, 23:43

Hiya, ive got about 5 people who are wanting to help my Radio station with hosting, i would love it if i knew how to get all of them together like the big stations do, well down to the base question, how do i make all the servers a cluster?

FesterHead · 2nd December 2003, 00:09

Setup another DNAS (the other folks) and have it relay the main DNAS (yours).

From the DNASs sc_serv.ini/conf configuration file:

code:
; RelayPort and RelayServer specify that you want to be a relay server.

; Relay servers act as clients to another server, and rebroadcast.

; Set RelayPort to 0, RelayServer to empty, or just leave these commented

; out to disable relay mode.

; RelayPort=8000

; RelayServer=192.168.1.58

Set relayport of the secondary DNAS to the portbase of the main DNAS.
Set relayserver of the secondary DNAS to the ip of the main DNAS.

Also, don't forget to remove the comment designator ( ; ) from the front of both lines after making the changes then restart the DNAS.

Fake667 · 2nd December 2003, 00:35

Thanks, It worked, "now to move to about 5 servers" ^^

vnRock · 3rd December 2003, 00:16

festerhead
Do we need to change the these setting in relay server?
;PortBase=8000
;SourceIP=ANY

the main server I use port 272, the relay server I use port 8000, is that OK...

I see both server in the yp directory. How can we fix that?

FesterHead · 3rd December 2003, 00:34

Leave SourceIP as ANY.

If the selected portBase is available, use it. Else, select another portBase. (remember both portBase and portBase+1 need to be free)

************************

Once relayed, the DNASs will [cluster] in the SHOUTcast yp. Give it a little time.

vnRock · 3rd December 2003, 22:06

Got it festerhead, thank. Now everything makes sense, "load balancing", "relay", "cluster" really make sense. I didn't get the load balancing to work. But I'll try more.

theravenz · 10th October 2004, 03:54

Alright, I found a script on this site somewhere, which i modified for my own site, so im going to post my modification here, You might see this script somewhere (thanks to whoever posted it -

forgot who)

But anyways, it didnt have listener count on it, like the shoutcast.com cluster link did, so i pretty much made it identical to the cluster link, here it is

code:


<? 

##Settings## 



//Define all servers here (add more if needed) 

$server_address[0]='65.75.186.30'; 

$server_port[0]=8400; 

$server_title[0]='fuseRADIO 24/7 Mix';  



$server_address[1]='67.19.102.78'; 

$server_port[1]=8010; 

$server_title[1]='fuseRADIO 24/7 Mix'; 



$server_address[2]='67.19.102.78'; 

$server_port[2]=8012; 

$server_title[2]='fuseRADIO 24/7 Mix';



//Set mode (either load_balancing, random, or new_random) 

// $mode='load_balancing'; 

// $mode='random'; 

$mode='load_balancing'; 



##Settings complete## 



if($mode=='random'){ 

mt_srand((double) microtime() * 1000000); 

for($i=0; $i<count($server_address); $i++){ 

$server[$i]=mt_rand(0, count($server_address)-1); 

for($j=0; $j<$i; $j++){ 

if($server[$j]==$server[$i]){ 

$i--; 

break; 

} 

} 

} 



} 

elseif($mode=='load_balancing'){ 

//This is really not a good way to do this since each request will 

//query all the servers. It would be better to have a cache that is updated 

//periodically (file or database) and just grab the current numbers from there, 

//but since this is just something to go off of I will do it by contacting each 

//server. 

for($i=0; $i<count($server_address); $i++){ 

$fp = fsockopen($server_address[$i], $server_port[$i], $errnum, $errstr, 2); 

if ($fp){ 

$buffer=''; 

fwrite($fp, "GET /7.html HTTP/1.0\r\nUser-Agent: Playlist Generator(Mozilla)\r\n\r\n"); 

while(!feof($fp)){ 

$buffer.=fread($fp, 1024); 

} 

fclose($fp); 

$data=eregi_replace(".*<body>(.*)</body>.*", '\1', $buffer); 



$numbers=explode(",", $data); 



$lnr[$i]=$numbers[0];

$mx[$i]=$numbers[3];

$percent_filled[$i][0]=$numbers[0]/$numbers[3]; 

$percent_filled[$i][1]=$i; 

} 

else{ 

$lnr[$i]=$listen;

$mx[$i]=$max;

$percent_filled[$i][0]=1.1; 

$percent_filled[$i][1]=$i; 

} 



} 

sort($percent_filled); 

reset($percent_filled); 

for($i=0; $i<count($server_address); $i++){ 

$server[$i]=$percent_filled[$i][1]; 



} 

} 

elseif($mode=='new_random'){ 

//Doubt it is useful for this, but if you had a LARGE number of servers this would 

//be faster since in the other random there are only as many random numbers as servers 

//and technically you could get stuck in a for loop for a long time trying to get an unused 

//random number. This method uses 1000 times the number of servers so the probability 

//of getting repeats is much less meaning less time in the for loop that makes sure the 

//random numbers are unique. 

mt_srand((double) microtime() * 1000000); 

for($i=0; $i<count($server_address); $i++){ 

$rand[$i][0]=mt_rand(0, (1000*count($server_address))); 

$rand[$i][1]=$i; 

for($j=0; $j<$i; $j++){ 

if($rand[$j][0]==$rand[$i][0]){ 

$i--; 

break; 

} 

} 

} 

sort($rand); 

reset($rand); 

for($i=0; $i<count($server_address); $i++){ 

$server[$i]=$rand[$i][1]; 

} 



} 

else{ 

for($i=0; $i<count($server_address); $i++){ 

$server[$i]=$i; 

} 

} 

$totall=$lnr[$server[0]]+$lnr[$server[1]]+$lnr[$server[2]];

$totalm=$mx[$server[0]]+$mx[$server[1]]+$mx[$server[2]];

$total_entries=count($server_address)+1; 





header("Content-Type: audio/x-scpls"); 



echo("[playlist]\n"); 

for($i=0; $i<count($server_address); $i++){ 

$file=$i+1; 

echo('File'.$file.'=http://'.$server_address[$server[$i]].':'.$server_port[$server[$i]].'/'); 

echo("\n"); 

echo('Title'.$file.'=(#'.$file.' '.$lnr[$server[$i]].'/'.$mx[$server[$i]].') '.$server_title[$server[$i]].''); 

echo("\n"); 

echo("Length$file=-1\n"); 

} 

echo("File4=http://hmmm:8743/");

echo("\n"); 

echo("Title4=Current total listeners (".$totall."/".$totalm.")");

echo("\n"); 

echo("Length4=-1\n");

echo("NumberOfEntries=$total_entries\n

Version=2\n"); 



?>

This is the script i use,
theres 2 copies of it of you guys wanna test it out, links should be in my sig, else here they are again :P

http://fuseradio.com.au/alt.pls
http://fuseradio.com.au/trance.pls

Have fun.

1st December 2003, 23:43	#1
Fake667 Junior Member Join Date: Jan 2003 Location: Van Buren AR Posts: 6	Clustering multiple Servers Hiya, ive got about 5 people who are wanting to help my Radio station with hosting, i would love it if i knew how to get all of them together like the big stations do, well down to the base question, how do i make all the servers a cluster?

2nd December 2003, 00:09	#2
FesterHead Alumni Join Date: Sep 2001 Location: Maui, Hawaii Posts: 14,108	Setup another DNAS (the other folks) and have it relay the main DNAS (yours). From the DNASs sc_serv.ini/conf configuration file: code: ; RelayPort and RelayServer specify that you want to be a relay server. ; Relay servers act as clients to another server, and rebroadcast. ; Set RelayPort to 0, RelayServer to empty, or just leave these commented ; out to disable relay mode. ; RelayPort=8000 ; RelayServer=192.168.1.58 Set relayport of the secondary DNAS to the portbase of the main DNAS. Set relayserver of the secondary DNAS to the ip of the main DNAS. Also, don't forget to remove the comment designator ( ; ) from the front of both lines after making the changes then restart the DNAS.

2nd December 2003, 00:35	#3
Fake667 Junior Member Join Date: Jan 2003 Location: Van Buren AR Posts: 6	thx Thanks, It worked, "now to move to about 5 servers" ^^

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3rd December 2003, 00:16	#4
vnRock Junior Member Join Date: Dec 2003 Posts: 6	festerhead Do we need to change the these setting in relay server? ;PortBase=8000 ;SourceIP=ANY the main server I use port 272, the relay server I use port 8000, is that OK... I see both server in the yp directory. How can we fix that?

3rd December 2003, 00:34	#5
FesterHead Alumni Join Date: Sep 2001 Location: Maui, Hawaii Posts: 14,108	Leave SourceIP as ANY. If the selected portBase is available, use it. Else, select another portBase. (remember both portBase and portBase+1 need to be free) ************************ Once relayed, the DNASs will [cluster] in the SHOUTcast yp. Give it a little time.

3rd December 2003, 22:06	#6
vnRock Junior Member Join Date: Dec 2003 Posts: 6	Got it festerhead, thank. Now everything makes sense, "load balancing", "relay", "cluster" really make sense. I didn't get the load balancing to work. But I'll try more.