[Xymon] Re: WinPSClient - Updates?

[David Baldwin]

Jason,

Thanks for the email.
> So it looks like the WinPSClient hasn’t been updated in a few months.
> I had seen a thread from quite a while ago about some issues David was
> running into, but can’t tell if he’s still around and willing/able to
> work on it.
>
In principle I am interested, but don't have a lot of time to work on it
at present.
> I’ve been able to get XymonPSClient.exe (aka SrvAny) to run powershell
> natively as a 64-bit executable. The only change necessary to enable
> this was changing the PowerShell executable to running as
> %windir%\sysnative\WindowsPowerShell\v1.0\powershell.exe. The
> sysnative portion prevents a 32-bit program (SrvAny) from being
> redirected to %windir%\SysWow64.
> (See http://msdn.microsoft.com/en-us/library/windows/desktop/aa384187(v=vs.85).aspx
> <http://msdn.microsoft.com/en-us/library/windows/desktop/aa384187%28v=vs.85%29.aspx>).
>
Thanks - I found the "sysNative" workaround a month or two ago also.
Very useful for running PS scripts from BBWin since it is still 32-bit only.
> I also found a better service wrapper than SrvAny, namely nssm
> (http://nssm.cc/). This has the ability to detect if powershell fails
> and restart it, which is something SrvAny lacks. It also comes in both
> 32-bit and 64-bit versions, so when using the latter the sysnative
> piece isn’t necessary. I’ve only been working at this for a day or
> two, so it probably needs more testing, but it looks promising.
>
That's an awesome improvement. Definitely a big advance :)
> Is there any work (design contemplation) about how xymonclient.ps1
> could handle external scripts? I assume this was just a future phase
> and not so much a limitation or barrier that hadn’t yet been overcome.
>
I'd played around with things like start-job in PS, but I hadn't worked
through all of the legacy reporting mechanisms from BBNT/BBWin (e.g.
writing text files into directory - that's an easy one in practice) but
more to the point worked out throttling mechanisms for long-running
scripts that don't exit, etc. Had also considered just running external
scripts as scheduled tasks, but not had time to investigate.

>From memory there were some other issues such as dealing with memory
leaks (periodic service restart would solve that).

David.

-- 
David Baldwin - Senior Systems Administrator (Datacentres + Networks)
Information and Communication Technology Services
Australian Sports Commission          http://ausport.gov.au
Tel 02 62147830 Fax 02 62141830       PO Box 176 Belconnen ACT 2616
david.baldwin at ausport.gov.au          Leverrier Street Bruce ACT 2617


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