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From Jim Jagielski <>
Subject Re: New feature request for balancer-manager: command line usage
Date Thu, 01 Nov 2012 13:39:02 GMT
You're right that the API really needs to be documented. My hope
is that once the "make balancer-manager changes sticky" backports
are approved and in 2.4.x, I'll write up in more detail how
the b-m works and its API.

afaik, nginx lacks any sort of dynamic reverse-proxy reconfig
capability. It's one of the killer features of Apache 2.4
esp for cloud environs.

On Nov 1, 2012, at 9:07 AM, John M <> wrote:

> It's correct that somebody could use an http client to do the load
> balancing, it's just awkward: there isn't a published API for it.  The
> script / client might need to have some intelligence built into it, to
> try to figure out what the current states of the load balanced servers
> are, and to handle any errors that might occur.  Also, with Tomcat,
> one can deploy outside of the tomcat manager web application with
> Maven, with Ant, or with the Tomcat Client Deployer, which is why I
> was hoping something could eventually be built into Httpd as well
> (and, does nginx already have this capability?).  But for now, you're
> right, I can do what I need to do with Curl or some other client.
> Thanks,
> John M
> On Thu, Nov 1, 2012 at 7:29 AM, Jim Jagielski <> wrote:
>> On Oct 30, 2012, at 3:12 PM, John M <> wrote:
>>> Hello,
>>> I have a new feature request for the balancer-manager: the ability to
>>> enable or disable servers in the balancer using the command line,
>>> instead of using the only way that exists that I know of: the
>>> balancer-manager webpage.  The use case for this would be the creation
>>> of a shell script that could call such a command-prompt command, as
>>> part of an automated hot-deploy or continuous deployment architecture.
>>> I don't know anything about the httpd source and don't know if this
>>> would have to be part of a new executable if not an addition to httpd
>>> or apacectl....what does everyone / anyone think?  This is my first
>>> time emailing this group: for this request to be considered, do I need
>>> to create an item in Bugzilla?
>>> I could also think about trying to implement this sort of thing myself
>>> and submitting it as a patch, but I could very much use guidance
>>> towards what to create / modify and where it would go in the
>>> codebase......
>> Right now, the balancer-manager doesn't require the use
>> of the web-interface. You can talk straight http to it
>> via curl/httpclient/whatevs. So creating a php/perl/python/ruby
>> script that interfaces with the manager should be no prob at all.

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