Comments on: Have You Had JRun Connector Problems?

By: Amir

Amir — Wed, 12 Nov 2008 18:36:46 +0000

The connector log is the output from the connector plugin for apache. its a text file that details the information exchange between the http server (apache) and the application server (coldfusion). The log is the info from the connector (or man in the middle).

HTH

By: Ryan Stille

Ryan Stille — Tue, 12 Aug 2008 21:50:03 +0000

What is this ‘connector log’ of what you speak? I’ve never heard of such a thing. I’m running into some issues with a site thats using the IIS connector to talk to a JRun cluster.

By: How to Configure JRun Clustering with Apache | ~/my-other-beans

How to Configure JRun Clustering with Apache | ~/my-other-beans — Tue, 04 Mar 2008 23:14:00 +0000

[...] Harper reported some long standing issues he has experienced with JRun connectors and IIS. Although this post doesn’t address this [...]

By: Karl

Karl — Fri, 06 Oct 2006 18:00:33 +0000

One guy who I know has had serious problems over time with Jrun and CFMX is Matt Haughey of http://www.metafilter.com .. metafilter is cfmx, it’s hosted on a single instance server, and he’s had stability problems for years.

By: My Other Beans » Blog Archive » How to Configure JRun Clustering with Apache

Sun, 16 Jul 2006 20:43:40 +0000

[...] Brandon Harper reported some long standing issues he has experienced with JRun connectors and IIS. Although this post doesn’t address this exact problem, it will provide guidance for those experiencing similar problems with Apache. [...]

By: Brandon Harper

Brandon Harper — Sat, 15 Jul 2006 02:28:09 +0000

Steve,

No problem– I’m working on almost the exact same thing at the moment and have not had any luck with it for quite a long time and was reluctantly glad to see someone else with the same issues.

Alex,

Sounds very similar to my experiences. We’re in the process of moving to having a dedicated load balancer direct traffic in the exact manner that you mention. Thanks for the links too, I’ll check those out.

By: Alex Hubner

Alex Hubner — Sat, 15 Jul 2006 02:17:47 +0000

I’ve faced many problems with connectors both on Windows and Linux machines. Whenever you configure the connector to a Jrun cluster it became a instable and unpredictable sollution. Things get worst when you have a cluster with remote instances. Last time I’ve tried to use it was in a RHEL 4 with Apache 2.0.x with 6 Jrun/CF instances (4 on a machine and 2 on another, via a 1Gbps network). It does not work as it should, does not balance as it should and worst: hangs the entire cluster, cloging evertyhing. Now I’m only buiding a cluster with replicate sessions on and using a third load-balancer (which can be a dedicated appliance or a software) to forward HTTP requests to the instances itself (8301,8302,8303, etc…). The Jrun/CF built-in webserver seams to handle well a lot of traffic (you should tune it on the jrun.xml file) and the sollution is pretty fair and reliable.

Some free clustering softwares that I’ve cogitate as a bypasss to the Jrun/CF connector:

Sun WebServer - http://www.sun.com/download/pr.....d=446518d5
HAProxy - http://haproxy.1wt.eu/
Balance - http://www.inlab.de/balance.html
Pound Reverse Proxy - http://www.apsis.ch/pound
Pen - http://siag.nu/pen/

And of course, Apache mod_proxy (including mod_proxy_balancer).

By: Steve Ray

Steve Ray — Sat, 15 Jul 2006 00:40:02 +0000

Brandon -

Thanks for the post. I have now moved onto Apache 2.0.58. It is loading the connector properly, from what I can see in the apache error log. And, my individual apache virtual host error logs have nothing in them. I’ve followed some advice from Steven Erat’s blog on configuring mult virtual hosts, and yet, all I get in the browser window is the CF code displayed (not run). I’ll continue to work on this on Monday, so if you think of anything else, please pass it on. Thanks again.

By: Brandon Harper

Brandon Harper — Fri, 14 Jul 2006 22:11:05 +0000

I haven’t tried the setup on Linux and the like, but at this point it’s not an option (and isn’t worthwhile given that this configuration will only be up for another 3 weeks or so).

And yep, I read their blogs and have an entry dedicated to Clustering CF and what not. I’ve been setting-up/tuning enterprise clusters for a bit short of 4 years now, have been doing sysadmin on Windoze, Linux, and FreeBSD for 9 years or so at this point, Linux certified, etc. and this is about the only problem which I haven’t been able to work around as far as CF/JRun configuration is concerned.

I’m curious to see if anyone besides Steve and I have had the exact same problem and/or knows a specific workaround for it since it’s very specific problem and I think I’ve exhausted everything I can think of to try.

By: Claude

Claude — Fri, 14 Jul 2006 21:48:54 +0000

Did you try running on a non-Windoze server?

I manage a load balanced environment with 4 RedHat Linux Enterprise servers, each box has 2 JRun clusters, one of 2 and the other of 4 instances of CFMX7/Flex 1.5 — Yes that’s 24 hybrid instances.

Also check out Steven Erat and Brandon Purcell’s blogs.