You could probably easily port the functionality you're looking for in
using ReadTCP to netcat. Then you could either write a wrapper script that
calls netcat, or just run netcat itself, inside of a ReturnsZero or
ReturnsZeroShell function. Although you're obviating the usage of an
internal cfengine function (boo) you're gaining the ability to more easily
control the method of class expression (yay).
classes:
locationX = ( ReturnsZero("/path/to/nc.script $dostuff") )
locationY = ( ReturnsZero("/path/to/nc.script $dootherstuff") )
-Chris
On Thu, 18 Mar 2010, Aleksey Tsalolikhin wrote:
> Hi. Is it possible to selectively suppress error messages with cfengine 2?
>
> For example, I have the following working config which sets a class indicating
> the machine's physical location.
>
> I deal with two locations, and each location has it's own Web proxy server.
> I try to connect to both, and set a class based on which one succeeds.
>
> --- start of cfengine 2.2.10 config file file ---
>
> #!/var/cfengine/bin/cfagent -qKf
>
> control:
>
> probehttphwd = ( ReadTCP(webproxy.hollywood.example.com,8008,"GET
> /cfengine_probe HTTP/1.0${n}${n}",1024) )
> probehttpnyc = ( ReadTCP(webproxy.newyork.example.com,8008,"GET
> /cfengine_probe HTTP/1.0${n}${n}",1024) )
>
>
> classes:
> we_are_in_hollywood = ( RegCmp(".*HTTP.*","${probehttphwd}") )
> we_are_in_newyork = ( RegCmp(".*HTTP.*","${probehttpmmb}") )
>
> --- start of cfengine 2.2.10 policy file ---
>
> However this results in error messages for the other proxy:
>
> Couldn't open a tcp socket
> Connection timed out
>
> Is there any way to suppress just that error message? I searched the
> Cfengine 2 reference manual and did not find anything so I suspect
> the answer is "no", but maybe I missed something?
>
> I am trying to determine location. I can't use network addresses,
> as these are separate entities each using private address space
> and there is some overlap in the address space they use.
>
> Thanks,
> Aleksey
> _______________________________________________
> Help-cfengine mailing list
> Help-cfengine@cfengine.org
> https://cfengine.org/mailman/listinfo/help-cfengine
>
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