CF8 Multiserver configuration - how to identify jvm config file for an instance?

@djangolives, the simple answer is that what you seek is tracked in the registry. The longer answer, including how to get that info from the command line, follows.

Since you’re running CF on Windows, then if you’re running each instance as a service, then @joopk was on the right track. The way to indicate a different jvm.config for an instance is to modify the service definition to denote it. And as Carl later noted, you do that using the command line jrunsvc command and the –config argument. Sadly, there is no jrunsvc argument that lists these definitions (that I know of).

And you’re right that if you look at the Windows service definition, all you’ll see is it pointing to jrunsvc.exe itself, not indicating the jvm.config.

Instead, the configuration is saved as part of the Service definition as tracked by Windows in the registry, and that’s where you need to look to find this info. If you’re comfortable using RegEdit, I’ll share what you need to find it. If you may prefer to use a command-line tool instead, I’ll show that also, which is helpful both to get for many instances quickly as well as to avoid risk of editing values by mistake in regedit.

First, note that all services are defined in the registry at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\. So let’s say your service name of interest was “Adobe Coldfusion 8 AS instance1”. You’d find that there’s a key there with that name. And under that key you will see it has various values, among which is one (if you did modify it to have its own jvm.config) called “Parameters”, which is where the JRunSVC command would place this –config argument and value if provided.

So that’s one way to find what config is used for what service. But a second way is to use the REG command-line tool (should be available free within Windows on most versions that I’ve seen.) You’d want to use its “query” argument, and you then pass it the keyname (including the service/instance name, so it’s varied a bit from what I showed above). Note also that if the service name has spaces, then you need to enclose the whole keyname in quotes.

reg query "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Adobe Coldfusion 8 AS instance1"

That will show all the keys and their values, but even niftier is that you can get it to list JUST the one value you’re interested in (in this case, the one called “parameters”) using the /v argument:

reg query "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Adobe Coldfusion 8 AS instance1" /v parameters

Note also that the reg query command also lets you specify the machine name (before the keyname) if you wanted to use this to run against other servers in your network, and it has still other args that may be of interest. Run “reg query /?” from the command line to learn more.

I do think this will be the most straight-forward way to get the info you seek, @djangolives. Let us know if that helps or if you need more info.

/charlie

PS As I was responding to this note, and referring to djangolives and joopk above, I wondered, “do people realize they can change the forums to show their real name rather than just their Adobe ID?” I do appreciate that some may like it that way, but if you maybe didn’t know you could and you’d like to show your name instead, see another forum entry I just created at http://forums.adobe.com/thread/1029289.

PPS I am also going to blog all this above. I was torn as to whether to do it there and point to it here, or vice-versa. I decided it may be best for all concerned to just repeat the info in both places. I’ll update the blog entry if we get some new info to modify what I propose above.