logging traps - traphandle calling Perl scripts

permalink · #1 (**permalink**) 04-12-2006

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Hi all,
=20
My name is Irving Barr=EDa, a panamanian student of electronics
engineering, in charge of a project regarding net-snmp. I have installed
net-SNMP 5.1.4 on a RHEL AS 3 system with kernel version 2.4.24 and I
can generate traps and also receive them in the same machine through the
loopback interface. As you can see, I=92m just testing but there is a =
plan
to use net-snmp in a production system. First of all, I would like to
know how to log the traps that my machine receives. In my test I open a
terminal and type the following:
=20
# snmptrapd -f =96Lo
=20
After this, I open another terminal and type:
=20
# snmptrap -v 1 -c public localhost "" "" 0 0 ""
=20
As long as I understand, the first command starts the trap receiver
while the later generates a ColdStart trap. In the terminal where
snmptrapd is running I can see the receipt of the trap but I can=92t
figure out how to log them in some file of my preference.
=20
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D One more question
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=20
Previously, I successfully tested traptoemail in a Windows machine. I
just had to install ActiveState=92s ActivePERL and everything worked =
fine.
Now that I=92m testing on Linux I=92ve found some problems. What I would
like to know is how to install Perl correctly. Here is what I typed
during the installation:
=20
# ./configure --with-perl-modules --enable-embedded-perl --enable-shared
# make
# make install
# cd perl
# perl Makefile.PL
# make
# make install
=20
I don=92t know why traptoemail (neither any other Perl script) does not
work! For testing, I wrote a very simple Perl program like this:
=20
#!/usr/local/bin/perl
print "This is a test";
=20
And modified my snmptrapd.conf (located at /usr/local/etc/snmp) as
follows:
=20
traphandle default usr/bin/perl /usr/local/bin/Hello
=20
And ran my test again (forcing snmptrapd to use the recently created
configuration file):
=20
# snmptrapd -f =96Lo =96c /usr/local/etc/snmp/snmptrad.conf
=20
And I can see the trap in the Terminal but no output from my Perl
script.
I have to mention that I after a long time testing I ended up installing
ActivePERL for Linux but nothing got better.
Could somebody help?
=20
Thanks in advance for your time and attention.
=20
Regards,
IB

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<div class=3DSection1>

Hi<font=
size=3D2
face=3DArial> all,<o:p></o:p>

<o:p> </o:p>

My name is Irving =
Barr=EDa, a panamanian
student of electronics engineering, in charge of a project regarding =
net-snmp. I have installed net-SNMP 5.1.4 on a RHEL AS =
3 system
with kernel version 2.4.24 and I can generate traps and also receive =
them in
the same machine through the loopback =
interface. As
you can see, I’m just testing but there is a plan to use net-snmp in a production system. First of all, I would =
like to
know how to log the traps that my machine receives. In my test I open a
terminal and type the following:<o:p></o:p>

<o:p> </o:p></span=
>

=A0=A0=A0=A0=A0 # snmptrapd
-f –Lo<o:p></o:p>

<o:p> </o:p></span=
>

After this, I open =
another
terminal and type:<o:p></o:p>

<o:p> </o:p></span=
>

=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 # snmptrap =
-v 1 -c
public localhost "" "" 0 =
0=A0 =
""<o:p></o:p>

<o:p> </o:p></span=
>

As long as I =
understand, the
first command starts the trap receiver while the later generates a ColdStart trap. In the terminal where snmptrapd
is running I can see the receipt of the trap but I can’t figure =
out how
to log them in some file of my preference.<o:p></o:p>

<o:p> </o:p></span=
>

=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D
One more question =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<o:p></o:p>

<o:p> </o:p></span=
>

Previously, I =
successfully tested
traptoemail in a Windows machine. I just had =
to
install ActiveState’s ActivePERL
and everything worked fine. Now that I’m testing on Linux =
I’ve
found some problems. What I would like to know is how to install Perl =
correctly.
Here is what I typed during the =
installation:<o:p></o:p>

<o:p> </o:p></span=
>

# ./configure =
--with-perl-modules
--enable-embedded-perl =
--enable-shared<o:p></o:p>

# make<o:p></o:p>

# make install<o:p></o:p>

# cd perl<o:p></o:p>

# perl =
Makefile.PL<o:p></o:p>

# make<o:p></o:p>

# make install<o:p></o:p>

<o:p> </o:p>

I don’t know why =
traptoemail (neither any other Perl script) does =
not work! =A0For testing, I wrote a very simple =
Perl
program like this:<o:p></o:p>

<o:p> </o:p></span=
>

#!/usr/local/bin/perl<o:p></o:p>

print "This is a =
test";<o:p></o:p>

<o:p> </o:p></span=
>

And =
modified
my snmptrapd.conf (located at /usr/local/etc/snmp)
as follows:<o:p=
></o:p>

<o:p> </o:p></span=
>

traphandle default usr/bin/perl /usr/local/bin/Hello<o:p></o:p>

<o:p> </o:p></span=
>

And ran my test again =
(forcing
snmptrapd to use the recently created =
configuration
file):<o:p></o:p>

<o:p> </o:p></span=
>

# snmptrapd -f –Lo =
–c /usr/local/etc/snmp/snmptrad.conf<o:p></o:p>

<o:p> </o:p>

And I can see the trap =
in the
Terminal but no output from my Perl script.<o:p></o:p>

I have to mention that =
I
after a long time testing I ended up installing ActivePERL
for Linux but nothing got better.<o:p></o:p>

Could somebody =
help?<o:p></o:p>

<o:p> </o:p></span=
>

Thanks in advance for =
your
time and attention.<o:p></o:p>

<o:p> </o:p></span=
>

Regards,<o:p></o:p></sp=
an>

IB<o:p></o:p></f=
ont>

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