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Today's Topics:
1. Does netdisco map MAC to IP to host name to switch port for
Nexus 7010 & ASA (Gene Mosley)
2. Re: Does netdisco map MAC to IP to host name to switch port
for Nexus 7010 & ASA (Chris Moody)
3. Re: Timezone question (Oliver Gorwits)
4. Re: Netdisco 2: error running job (Oliver Gorwits)
5. Re: Netdisco 2 questions (Oliver Gorwits)
6. Re: Netdisco 2 questions (Oliver Gorwits)
--- Begin Message ---
I have read a lot of bulletin board/forum/blog postings stating that
netdisco does not work with Nexus - but all of the messages I read were a
few months old or older.
Does netdisco work with Cisco 7000/5000/2000 Nexus switches and FEX or is
there still an issue?
If there is an issue what is it? A couple of postings I read made it sound
like the problem is that NX/OS does not support 'bridge MIB' - is this
correct?
If SNMP is incapable of doing this is there an alternative (SSH/expect or
something) that works and works reliably?
--- End Message ---
--- Begin Message ---
I can speak from my personal experience that Nexus (thanks to the way
SNMP was 're-engineered' by Cisco) acts really wonky for a number of tools.
For example, NetDisco-specific, each 'vrf' has to be discovered as a
separate 'device'...and I still have tons of 'undiscovered neighbor'
entries for the Nexus boxes, when they are all in-fact discovered.
That coupled with not being able to lookup the "MAC to IP to host name
to switch port" mappings as you mention in the subject line, and I'd say
that yes, there are definitely issues with Nexus.
These are the -only- device types giving me these kinds of headaches.
NetDisco kicks ass in so many ways. Nexus, not so much IMHO - they
still feel like the paint is drying in a lot of cases. I've had to
customize a LOT of the automation scripting I do just to account for
"special cases and behaviors" from Nexus gear.
Currently running:
n e t d i s c o
--------------------------------------------------
Netdisco Version : 1.1
SNMP::Info Version : 3.07
Net-SNMP Version : 5.03022
Perl Version : 5.8.8
Cheers,
-Chris
On 12/6/13 12:45 AM, Gene Mosley wrote:
I have read a lot of bulletin board/forum/blog postings stating that
netdisco does not work with Nexus - but all of the messages I read
were a few months old or older.
Does netdisco work with Cisco 7000/5000/2000 Nexus switches and FEX or
is there still an issue?
If there is an issue what is it? A couple of postings I read made it
sound like the problem is that NX/OS does not support 'bridge MIB' -
is this correct?
If SNMP is incapable of doing this is there an alternative (SSH/expect
or something) that works and works reliably?
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--- End Message ---
--- Begin Message ---
Hi David,
Netdisco uses, consistently, just "timestamp" format fields in the
database, without time zone information.
This causes PostgreSQL to convert to/from local time zone on
output/input respectively.
Therefore you should set your timezone configuration parameter for the
database to be "US/Eastern".
regards,
oliver.
On 2013-10-31 12:46, David Koski wrote:
I've suddenly noticed that my netdisco timestamps seem to be off 4
hours. To me this signifies some issue with the time zones. My
system is currently set for 'US/Eastern' but the database is set for
GMT apparently. Should postgres be set to GMT or should it be set
for the local time zone as the default? Could there be something
else I'm missing?
To me it looks like it's inserting the timestamps from the local
system taking them as the GMT time, and then when the web pages pull
it back out, it's being translated to Eastern Daylight time (Hence
the
current timestamp shows it -04:00 from the actual time).
I wanted to check to see what everyone else was doing before I
started
changing parameters in the database.
Thanks
Dave
------------
DAVID KOSKI
GCFA, GISP, GSEC, RHCE
ITS Communications Systems and Data Centers
734-647-8993 (Office)
734-678-5824 (Mobile)
--- End Message ---
--- Begin Message ---
Hi Peter,
Two possibilities:
It could be a bug in SNMP::Info's Extreme module, causing more than one
port to have the name "1:23" (is that a normal looking name for Extreme
switches anyway?).
It could be the port reports VLAN 11 as both native and non-native,
which may trip up the primary key constraint.
Are you comfortable working with snmpwalk, so we can see what
information the device actually returns?
regards,
oliver.
On 2013-10-31 13:22, Huber, Peter wrote:
Hi,
after running netdisco-do discover -d 10.10.10.10 I get the following
error message:
[26644] info @0.000020> discover: started at Thu Oct 31 14:10:21
2013
[26644] info @13.101797> discover: finished at Thu Oct 31 14:10:34
2013
[26644] info @13.101963> discover: status error: error running job:
DBIx::Class::Storage::DBI::_dbh_execute_for_fetch():
execute_for_fetch() aborted with 'ERROR: duplicate key value
violates
unique constraint "device_port_vlan_pkey"' at populate slice:
{
ip => "10.10.10.10",
last_discover => \"now()",
native => "t",
port => "1:23",
vlan => 11,
vlantype => undef
} at /opt/netdisco/perl5/lib/perl5/App/Netdisco/Core/Discover.pm line
453
How can I fix this? I am using version 2.019003
Regards
Peter
Private Universität Witten/Herdecke gGmbH
Alfred-Herrhausen-Straße 50
D - 58448 Witten
Homepage: http://www.uni-wh.de
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Geschäftsführung: Prof. Dr. Martin Butzlaff (Präsident), Dipl. oec.
Jan Peter Nonnenkamp (Kanzler)
Sitz der Gesellschaft: Witten
Handelsregister des Amtsgerichts Bochum Nr. HRB 8671
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--- End Message ---
--- Begin Message ---
Hi Jeremy,
On 2013-11-28 04:22, Jeremy Bresley wrote:
1. netdisco -F flag doesn't seem to be available in Netdisco 2, is
there an easy way to do a bulk discovery in Netdisco2?
No equivalent of the -F flag. If you want to let Netdisco 2 know about
devices which cannot be discovered through CDP/LLDP then you could run
the following command for each IP:
~/bin/netdisco-do -d <device-ip>
2. User management. If you login as a user, doesn't seem to be any
way
short of completely closing the browser to logout. Is this on the
list
for a future release/feature request?
There is a logout button. Look for the username at the right of the
navigation bar, then click the little down chevron next to the name.
There should be a Log Out option.
3. I've got about 120-150 users configured with local passwords on
my
Netdisco 1 install. Is there a way to bulk add users and set them to
LDAP access in Netdisco 2?
Only using SQL, I'm afraid. User management at the command line is on
the TODO list.
regards,
oliver.
Thanks for any pointers on these. I've looked through the docs I can
find, but Netdisco 2 docs seem to be harder to come by than Netdisco
1 docs.
Jeremy "TheBrez" Bresley
[email protected]
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--- End Message ---
--- Begin Message ---
On 2013-11-28 08:44, Michael Butash wrote:
It would be useful to use some kind of enumeration in ldap to match
security group membership for authorization purposes, allowing role
mapping
capability (group,group=role). Adding local users is a pain - have
you
considered this for implementation at some point to remove local user
creation and make it more dynamic? Consider kerberos too as this is
used a
lot for file-system access (ie. likewise, centrify).
No, we've not ever looked at implementing role mapping to LDAP and not
having a local users list in Netdisco. At this stage, I'm not sure any
developers will find the time themselves unless they need to personally
scratch the itch so... patches welcome!
It would be possible to hack this using Apache authN then mapping all
users to a single REMOTE_USER name, which Netdisco knows and trusts.
Example of using Apache and REMOTE_USER is in the Deployment docs.
p.s. Kerberos via the web? SPNEGO is nice, but when I last tried it the
browser support was patchy, sadly.
regards,
oliver.
Sadly windoze is still largely the source of truth for user accounts.
-mb
On November 27, 2013 9:22:32 PM Jeremy Bresley <[email protected]>
wrote:
Got a new server in to replace our old Netdisco one, and I've gotten
Netdisco2 up and running on it to see if I want to make the jump to
the new
version now or hold off for a while yet.
Couple questions for the group that came up while I'm getting
everything setup.
1. netdisco -F flag doesn't seem to be available in Netdisco 2, is
there
an easy way to do a bulk discovery in Netdisco2?
2. User management. If you login as a user, doesn't seem to be any
way
short of completely closing the browser to logout. Is this on the
list for
a future release/feature request?
3. I've got about 120-150 users configured with local passwords on
my
Netdisco 1 install. Is there a way to bulk add users and set them
to LDAP
access in Netdisco 2?
Thanks for any pointers on these. I've looked through the docs I
can find,
but Netdisco 2 docs seem to be harder to come by than Netdisco 1
docs.
Jeremy "TheBrez" Bresley
[email protected]
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