PLEASE HELP - Production ColdFusion server down

Question

I've been running CF 8.0.1 on a Windows 2008 server for over 2 years with no problems.  Tonight, IIS 7 locked up for the first time and I had to kill off the process.  Afterwards, I started getting this on all requests for .cfm pages:
The service is unavailable
Server Error
Either the Macromedia application server(s) are unreachable or none of them has a mapping to process this request.
The server *can* still serve up .html files.
I've tried rebooting and using the Web Server Configuration Tool to remove and re-add the connector but neither has fixed the problem.  The last time I ran the tool, I enabled "verbose logging for connector".
I see the following in the jrun_iis6_wildcard111221.log file:
2011-12-21 02:00:40 jrISAPI[4128:2184]  ***HttpExtensionProc for JRun ISAPI Extension: uri is "/index.cfm"
2011-12-21 02:00:40 jrISAPI[4128:2184]  trying to bootstrap from "127.0.0.1:51800"
2011-12-21 02:00:40 jrISAPI[4128:2184]  127.0.0.1:51800 initPool finished
2011-12-21 02:00:40 jrISAPI[4128:2184]  initialized temp proxy for 127.0.0.1:51800
2011-12-21 02:00:40 jrISAPI[4128:2184]  127.0.0.1:51800 jrConnect [376]
2011-12-21 02:00:40 jrISAPI[4128:2184]  sent/avail/result 25/25/25
2011-12-21 02:00:40 jrISAPI[4128:2184]  recv failed[376]: 10054 Connection reset by peer
2011-12-21 02:00:40 jrISAPI[4128:2184]  read/len/total -1/4/0
2011-12-21 02:00:40 jrISAPI[4128:2184]  127.0.0.1:51800 destroying/closing socket [376] error 10054
2011-12-21 02:00:40 jrISAPI[4128:2184]  jrCloseSocket [376]
2011-12-21 02:00:40 jrISAPI[4128:2184]  JRun closed connection. [376] dropped while sending command
2011-12-21 02:00:40 jrISAPI[4128:2184]  127.0.0.1:51800 could not fetch clustered-servers
2011-12-21 02:00:40 jrISAPI[4128:2184]  127.0.0.1:51800 destroyed.
2011-12-21 02:00:40 jrISAPI[4128:2184]  used thread identity to open file C:/ColdFusion8/runtime/lib/wsconfig/1/jrunserver.store
2011-12-21 02:00:40 jrISAPI[4128:2184]  loadServersFromStore(C:/ColdFusion8/runtime/lib/wsconfig/1/jrunserver.store)
2011-12-21 02:00:40 jrISAPI[4128:2184]  Couldn't initialize from remote server, JRun server(s) probably down.
2011-12-21 02:00:40 jrISAPI[4128:2184]  ExecUrl: request received: URL=/index.cfm
2011-12-21 02:00:40 jrISAPI[4128:2184]  ExecUrl Completion: 503, URL=/index.cfm.
I *can* telnet to port 51800 but don't know how to test that any further.
I would be extremely grateful to any suggestions on what I should try next as this is a production server for a fairly large international company.

Answer 1

In that case, you may have to remove the connectors manually. The connector is installed within CF's directory (something like c:\coldfusion9\runtime\lib\wsconfig in the standalone install if I recall correctly) and obviously settings for that connector are installed in IIS. In the case of IIS 7, those settings end up in one of the .config files (web.config, applicationHost.config, machine.config depending on what options you selected).
Is this documented anywhere?  I'd very much like to understand this but am not sure I'd find all the components by hunting around.  I know about the handler mappings but I'm curious what else is involved.
Not that I'm aware of, but those are the two locations where everything is.
Is the jrun_iis6_wildcard111221.log file one of these?  I guess I'm not quite sure what software components make up the "connector".  I know there's an ISAPI filter/extension and some handler mappings but am not sure what else.  I'd love to see a technical document that details all of this.
Yes, that's one of the files that makes up the connector. The connector consists of a couple of DLLs and a bunch of text files. On the CF server side, the port that the connector talks to is the JrunProxyServer port in jrun.xml (if I recall correctly).
Dave Watts, CTO, Fig Leaf Software