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Subject: Re: Unable to use Balancer plugin
From: James Peach <jpeach@apache.org>
In-Reply-To: 
 <1E72FBF508057746831C74E0A885DAF8845BB11AB5@EXSERVER5.cougarnet.uh.edu>
Date: Thu, 10 Mar 2016 08:22:45 -0800
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References: 
 <1E72FBF508057746831C74E0A885DAF8845BB11AB5@EXSERVER5.cougarnet.uh.edu>
To: users@trafficserver.apache.org


> On Mar 9, 2016, at 11:44 AM, Velusamy, Gandhimathi =
<gvelusam@Central.UH.EDU> wrote:
>=20
> Hi,
> I started using Traffic server recently for my graduate research. I =
want to use balancer plugin for my experiment.

That sounds great. A word of caution, the balancer is very simple, it =
might not be suitable for your experiment :)

> I configured traffic server with configure enable-experimental plugin =
option.
> I could see balance.so, hash.so and roundrobin.so files under =
/usr/local/libexec/trafficserver/ folder.
> I have set =E2=80=9Cproxy.config.plugin.plugin_dir=E2=80=9D to the =
above folder.
> My remap.config contains:
> map http://px206.perk http://px206.perk \
>     @plugin=3Dbalancer.so @pparam=3D--policy=3Droundrobin, url =
@pparam=3Dhttp://px205.perk:80 @pparam=3Dhttp://py205.perk:80

The targets for the balancer plugin are hostnames or IP addreses not =
URLs. You should be able to  verify what is happening in Traffic Server =
error logs or by using the "http_hdr" diagnostic tags, but I'd bet it =
ends up trying to send the request to a host named "http".

> I tested with hash policy too. I am getting connection refused error =
as below:
> =20
> root@px207:~# wget http://px206.perk:80/
> --2016-03-09 13:35:43--  http://px206.perk/
> Resolving px206.perk (px206.perk)... 10.0.101.6
> Connecting to px206.perk (px206.perk)|10.0.101.6|:80... connected.
> HTTP request sent, awaiting response... Read error (Connection reset =
by peer) in headers.
> Retrying.
> --2016-03-09 13:36:42--  (try: 2)  http://px206.perk/
> Connecting to px206.perk (px206.perk)|10.0.101.6|:80... failed: =
Connection refused.
> Resolving px206.perk (px206.perk)... 10.0.101.6
> Connecting to px206.perk (px206.perk)|10.0.101.6|:80... failed: =
Connection refused.
> root@px207:~#
> =20
> My client is px207.perk. Proxy is running from px206.perk and I want =
to load balance between px205.perk and py205.perk.
> On both px205 and py205 apache2 is running. I am just trying to get =
index.html file.
> =20
> When I tested with reverse proxy configuration it worked for me for =
both origin servers.
> Am I missing something here. Kindly help me.=20
> =20
> Thanks
> Gandhimathi