Hi Boris, this is a very good question. I have used Ruby and Rails and there's an application called mongrel_rails:<div><br class="webkit-block-placeholder"></div><div><span class="Apple-style-span" style="color: rgb(68, 68, 68); font-family: Courier; font-size: 11px; text-align: left; white-space: pre; ">
sudo mongrel_rails cluster::configure -e production -p 8000 -N 3 \</span></div><div><span class="Apple-style-span" style="color: rgb(68, 68, 68); font-family: Courier; font-size: 11px; text-align: left; white-space: pre; ">
-c /var/www/apps/testapp</span></div><div><span class="Apple-style-span" style="color: rgb(68, 68, 68); font-family: 'Trebuchet MS'; text-align: left; "><pre><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-family: arial; font-size: 13px; white-space: normal; ">
Note: The above line configure 3 mongrel instances (i.e. web servers) in production mode starting at port 8000. Thus, ports 8000 - 8002 would have an instance of the rails webserver running on it. This would create a file called
<span class="Apple-style-span" style="font-family: Trebuchet MS; "><font class="Apple-style-span" color="#009900">mongrel_cluster.yml</font></span><span class="Apple-style-span" style="color: rgb(68, 68, 68); font-family: Trebuchet MS; ">
. This looks like the following:</span></span></pre><pre><font class="Apple-style-span" face="'Trebuchet MS'" size="3"><span class="Apple-style-span" style="font-size: 13px; white-space: normal;">---
</span></font></pre><pre><font class="Apple-style-span" face="'Trebuchet MS'" size="3"><span class="Apple-style-span" style="font-size: 13px; white-space: normal;">port: "8000" </span></font></pre><pre>
<font class="Apple-style-span" face="'Trebuchet MS'" size="3"><span class="Apple-style-span" style="font-size: 13px; white-space: normal;">environment: production </span></font></pre><pre><font class="Apple-style-span" face="'Trebuchet MS'" size="3">
<span class="Apple-style-span" style="font-size: 13px; white-space: normal;">address: localhost </span></font></pre><pre><font class="Apple-style-span" face="'Trebuchet MS'" size="3"><span class="Apple-style-span" style="font-size: 13px; white-space: normal;">
pid_file: log/mongrel.pid </span></font></pre><pre><font class="Apple-style-span" face="'Trebuchet MS'" size="3"><span class="Apple-style-span" style="font-size: 13px; white-space: normal;">servers: 3 <br><br class="webkit-block-placeholder">
</span></font></pre><pre><font class="Apple-style-span" face="'Trebuchet MS'" size="3"><span class="Apple-style-span" style="font-size: 13px; white-space: normal;">Now, that I have generated the cluster file. I can perform the following actions:
</span></font></pre><pre><span class="Apple-style-span" style="font-size: 13px; ">sudo mongrel_rails cluster::start</span></pre><pre><font class="Apple-style-span" face="'Trebuchet MS'" size="3"><span class="Apple-style-span" style="font-size: 13px; white-space: normal;">
<pre><span class="Apple-style-span" style="font-family: 'Trebuchet MS'; white-space: normal; "><pre><code>sudo mongrel_rails cluster::stop</code></pre><pre><span class="Apple-style-span" style="font-family: 'Trebuchet MS'; white-space: normal; ">
<pre>sudo mongrel_rails cluster::restart</pre></span></pre></span></pre></span></font></pre><pre>Next, I would configure Apache's mod_proxy_balancer by inserting the following lines in my</pre><pre>conf file:</pre><pre>
<br class="webkit-block-placeholder"></pre><pre><span class="Apple-style-span" style="font-family: 'Trebuchet MS'; font-size: 13px; white-space: normal; "><pre><code><Proxy balancer://mongrel_cluster>
BalancerMember <a href="http://127.0.0.1:8000">http://127.0.0.1:8000</a>
BalancerMember <a href="http://127.0.0.1:8001">http://127.0.0.1:8001</a>
BalancerMember <a href="http://127.0.0.1:8002">http://127.0.0.1:8002</a>
</Proxy></code></pre></span></pre><pre>Note: I skipped a few steps but you can get the gist of what's going on in the above.</pre><pre><br></pre><pre>Finally, it would be great if Swazoo or another application (
i.e. Swazoo-Cluster) allowed one to</pre><pre>configure the relevant pieces of a Swazoo webserver. Then you can use this Swazoo-Cluster</pre><pre>application to start, stop, and restart the Swazoo webservers for a given application.
</pre><pre><br class="webkit-block-placeholder"></pre><pre>-Conrad</pre></span><div><br><div><span class="gmail_quote">On 8/23/07, <b class="gmail_sendername">Boris Popov</b> <<a href="mailto:boris@deepcovelabs.com">boris@deepcovelabs.com
</a>> wrote:</span><blockquote class="gmail_quote" style="margin:0;margin-left:0.8ex;border-left:1px #ccc solid;padding-left:1ex">Janko,<br><br>I do remember having this discussion as well, but in many situations you are deploying behind a web server of some sorts by proxying the Seaside/Swazoo combo, so IP configuration takes place there and does not belong in the application, at least as far as I'm concerned. So I want to bind to all addresses and let other people (or load balancers) decide which ones they will route traffic to (this becomes even more important in managed environments, which is where we are currently moving to).
<br><br>In a nutshell given the following two choices, which would you prefer if you wanted to listen on all interfaces?<br><br>A) Query the host for its interfaces and bind to all of them individually<br>B) Bind to <a href="http://0.0.0.0">
0.0.0.0</a><br><br>Thanks!<br><br>-Boris<br><br>--<br>+1.604.689.0322<br>DeepCove Labs Ltd.<br>4th floor 595 Howe Street<br>Vancouver, Canada V6C 2T5<br><a href="http://tinyurl.com/r7uw4">http://tinyurl.com/r7uw4</a><br><br>
<a href="mailto:boris@deepcovelabs.com">boris@deepcovelabs.com</a><br><br>CONFIDENTIALITY NOTICE<br><br>This email is intended only for the persons named in the message<br>header. Unless otherwise indicated, it contains information that is
<br>private and confidential. If you have received it in error, please<br>notify the sender and delete the entire message including any<br>attachments.<br><br>Thank you.<br><br>> -----Original Message-----<br>> From:
<a href="mailto:seaside-bounces@lists.squeakfo">seaside-bounces@lists.squeakfo</a><a href="http://undation.org">undation.org</a> [mailto:<a href="mailto:seaside-">seaside-</a><br>> <a href="mailto:bounces@lists.squeakfoundation">
bounces@lists.squeakfoundation</a>.org] On Behalf Of Janko Mivšek<br>> Sent: Thursday, August 23, 2007 2:49 PM<br>> To: Seaside - general discussion<br>> Subject: Re: [Seaside] Starting a site<br>><br>> Boris,
<br>><br>> Boris Popov wrote:<br>><br>> > Mostly because I just don't want to query the host to see which IPs<br>> > are available when <a href="http://0.0.0.0">0.0.0.0</a> is out there and waiting for me to use it :)
<br>> > Single site restriction is just fine for ~100% of Seaside users anyway.<br>><br>> We already had a debate on that. I think that most users are just happy<br>> with default 'localhost' configuration when they start with Swazoo.
<br>><br>> Because immediately when you want to go public, you need to register<br>> your hostname and ip anyway! Not to mention when you are going to host<br>> on some server with many ip's, etc etc. What is missing of course is
<br>> better documentation how to do that in Swazoo.<br>><br>> I think that your case is a special one and I don't understand why<br>> should Swazoo be complicated to deal with just your special case?<br>>
<br>> That doesn't mean that we won't introduce that feature in future Swazoo<br>> of course.<br>><br>> Best regards<br>> Janko<br>><br>><br>> --<br>> Janko Mivšek<br>> AIDA/Web<br>> Smalltalk Web Application Server
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