AIX monitoring with SNMP doesn't work

[ABBsupervision]

Hello,
We're trying to configure SNMPv3 on AIX to check its status through XI but we doesn't succeed.
We followed your instructions based on https://assets.nagios.com/downloads/nag ... g-SNMP.pdf

The logging is not written on /usr/tmp/snmpdv3.log as specified on conf file, instead we got error message on /usr/tmp/snmpd.log as follow:
06/11/21 15:45:18 EXCEPTIONS: decode_SNMP_Message: pr_seq:missing mandatory parameter: module SNMP OBJECT/class=UNIV/id=1 got CONT/5 (::ffff:<IP_Nagios_Server>)

We added following lines on conf files:
VACM_VIEW defaultView system - included -
VACM_VIEW defaultView interfaces - included -
VACM_VIEW defaultView tcp - included -
VACM_VIEW defaultView icmp - included -
VACM_VIEW defaultView udp - included -
VACM_VIEW defaultView snmp - included -
VACM_VIEW defaultView 1.3.6.1.2.1.25 - included -

Since it didn't change anything we made following change (change excluded by included):
VACM_VIEW defaultView snmpModules - included -

But still not working.
Any idea on how to resolve our issue please.

Thanks & regards

[gsmith]

Hi,

Can you please try this - I want to see where we're at with communication between the
xi server and the AIX box:

On the xi server:
cd /usr/local/nagios/libexec
./check_snmp_storage.pl -H <ip of AIX machine> -C <v3 communityname> -m "^/$" -w 2 -c 4

This check should return disk usage information from the remote AIX server, something like:
/: 11%used(1550MB/13892MB) (>4%) : CRITICAL

If it doesn't please provide the following files from the AIX machine:
/var/tmp/aixmibd.log
/var/tmp/hostmibd.log
/var/tmp/snmpdv3.log
/var/tmp/snmpmibd.log
/etc/snmpd.conf

Here is a good resource for AIX: https://nagios.fm4dd.com/howto/aix-snmp-setup.shtm

Thanks

[ABBsupervision]

Hello gsmith,

When a run this command i got this resultat :

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[root@DCPNAGIOSXIN1 libexec]# ./check_snmp_storage.pl -H <ip of AIX machine> -C <v3 communityname> -m "^/$" -w 2 -c 4
ERROR: Description/Type table : No response from remote host "ip of AIX machine".
[root@DCPNAGIOSXIN1 libexec]#

Please find attached the following files from the AIX machine.

Best Regards,
SOUHAIB

[gsmith]

Hi

On the nagios server run:

Code: Select all

nmap -sU -p 161 <ip of AIX machine>

Note: You may have to install nmap

If you get:

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Host is up (0.00068s latency).
PORT    STATE  SERVICE
161/udp closed snmp

Then you need to allow port 161 UDP on the AIX machine's firewall

Once you get:

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Host is up (0.00068s latency).
PORT    STATE         SERVICE
161/udp open|filtered snmp

then try these four commands:

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snmpwalk -v1 -c ABB <ip of AIX>
snmpwalk -v2c -c ABB <ip of AIX>
snmpwalk -v1 -c ABB <ip of AIX>
snmpwalk -v2c -c ABB <ip of AIX>

Thanks

[ABBsupervision]

Hello,

I inform you that the port is open as you can see via the following command :

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[root@DCPNAGIOSXIN1 ~]# nmap -sU -p 161 <ip of AIX machine>
Starting Nmap 7.70 ( https://nmap.org ) at 2021-06-15 09:30 +01
Nmap scan report for <Name AIX machine> (x.x.x.x)
Host is up (0.00065s latency).

PORT    STATE         SERVICE
161/udp open|filtered snmp

Nmap done: 1 IP address (1 host up) scanned in 6.01 seconds
[root@DCPNAGIOSXIN1 ~]#

And following your request here is the result of the four commands :

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[root@DCPNAGIOSXIN1 ~]# snmpwalk -v1 -c ABB <ip of AIX machine>
Timeout: No Response from x.x.x.x
[root@DCPNAGIOSXIN1 ~]# snmpwalk -v2c -c ABB <ip of AIX machine>1
Timeout: No Response from x.x.x.x
[root@DCPNAGIOSXIN1 ~]# snmpwalk -v1 -c ABB <ip of AIX machine>
Timeout: No Response from x.x.x.x
[root@DCPNAGIOSXIN1 ~]# snmpwalk -v2c -c ABB <ip of AIX machine>
Timeout: No Response from x.x.x.x

Best Regards,
SOUHAIB

[ABBsupervision]

Hello,

Any news about our request ?
It's urgent please.

Thanks & regards

[gsmith]

Try this :

snmpwalk -v1 -c public <ip of AIX>
snmpwalk -v2c -c public <ip of AIX>

[ABBsupervision]

Hi gsmith,

We tried both snmpwalk command and we got the same message :
Timeout: No Response from <IP_AIX>

We changed the community from public to <our_community> for both commands.
In SNMP version 2c we got the same Timeout / No Response error message
In SNMP version 1 it works

The SNMP v1 is already working as the AIX was monitoring by an old version of Nagios Core.
Since we deployed XI in replacement of the old version, we lost the AIX monitoring ability, since XI is using only SNMP version 2c or 3.

Any other suggestions ?
Thanks & regards

[gsmith]

Hi

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cd /usr/sbin
ls -l snmp*

What does the link show?

edit /etc/snmpdv3.conf
change:

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COMMUNITY ABB    ABB     noAuthNoPriv 0.0.0.0     0.0.0.0         -

to:

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COMMUNITY ABB    ABB     noAuthNoPriv <ip of nagiosxi>    255.255.255.255         -

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stopsrc -s aixmibd
stopsrc -s hostmibd
stopsrc -s snmpmibd
stopsrc -s snmpd

startsrc -s aixmibd -a "-c ABB"
startsrc -s hostmibd -a "-c ABB"
startsrc -s snmpmibd -a "-c ABB"
startsrc -s snmpd

Then try the snmpwak from the nagiosxi server.

Thanks

[ABBsupervision]

Hello,

Please find the order result below :

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[root@DCPNAGIOSXIN1 ~]# cd /usr/sbin
[root@DCPNAGIOSXIN1 sbin]# ls -l snmp*
-rwxr-xr-x. 1 root root  33352 11 août   2020 snmpd
-rwxr-xr-x. 1 root root  33504 11 août   2020 snmptrapd
-rwxr-xr-x. 1 root root 177455  7 nov.   2013 snmptt
-rwxr-xr-x. 1 root root   6488  7 nov.   2013 snmptthandler
[root@DCPNAGIOSXIN1 sbin]#

We have modified the file in the AIX server, as well as the execution of the mentioned commands.

But when we launch the snmpwalk nothing happens.

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[root@DCPNAGIOSXIN1 ~]# snmpwalk -v 2c -c ABB x.x.x.x
Timeout: No Response from x.x.x.x

Best Regards,
SOUHAIB