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SNMP Traps - Pending status persists

  • 14 February 2022
  • 16 replies
  • 476 views
S
Userlevel 1
Badge +2

Hello,

In order to test passive checks on my Centreon i have configured SNMP Trap for changing on the running configuration.

Tthe switch i try to monitor is Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 15.0(2)SE10a.

I use the passive check OID : .1.3.6.1.4.1.9.9.43.2.0.2 that was already built in Centreon.

But when i’m trying to test this OID my service, it still be on “pending”.

My configuration receives the check because i can see on my logs this output :

I have followed https://docs.centreon.com/fr/docs/20.04/monitoring/passive-monitoring/enable-snmp-traps and https://docs.centreon.com/fr/docs/monitoring/passive-monitoring/debug-snmp-traps-management to debug my configuration.

Do you have any suggestions to resolve this problem ?

Thanks a lot.

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Best answer by sduret 18 February 2022, 14:51

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16 replies

sims24
Userlevel 6
Badge +16

Hi, 


Do you have anything in /var/log/centreon/centreontrapd.log file? Is centreontrapd running (service centreontrapd status)? 

 

Note that you can actively poll for configuration change with this mode (just in case).

"It's shocking to find how many people do not believe they can learn, and how many more believe learning to be difficult." - Frank Herbert, 'Dune'.
S
Userlevel 1
Badge +2

Hello,

I have the following error on my /var/log/centreon/centreontrapd.log :

2022-02-15 03:54:52 - ERROR - 8723 - MySQL error: MySQL server has gone away (caller: centreon::trapd::lib:/usr/share/perl5/vendor_perl/centreon/trapd/lib.pm:501)
Query: SELECT traps_oid, traps_id, traps_mode FROM traps

2022-02-15 03:54:52 - ERROR - 8723 - Cant load cache trap oids.
2022-02-15 03:54:52 - ERROR - 8723 - Dont skip trap. Need to solve the error

Thanks

sims24
Userlevel 6
Badge +16

Are you on a Central server or a Poller?

"It's shocking to find how many people do not believe they can learn, and how many more believe learning to be difficult." - Frank Herbert, 'Dune'.
sims24
Userlevel 6
Badge +16

Make sure you have exported trap definition database here: 
 

 

Then select relevant server, tick boxes and click on Generate: 

 

"It's shocking to find how many people do not believe they can learn, and how many more believe learning to be difficult." - Frank Herbert, 'Dune'.
S
Userlevel 1
Badge +2

Hello, i am on a Centreon-central and i have indeed generated the SNMP Trap configuration, i have checked my services and they are all up and running, it might be an OID issue that’s not recognized.

I have checked on https://cric.grenoble.cnrs.fr/Administrateurs/Outils/MIBS/?module=CISCO-PRODUCTS-MIB and https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_55_se/configuration/guide/scg_2960/swmibs.html but i can’t find the right oid to use...

 

sims24
Userlevel 6
Badge +16

Hello,

I have the following error on my /var/log/centreon/centreontrapd.log :

2022-02-15 03:54:52 - ERROR - 8723 - MySQL error: MySQL server has gone away (caller: centreon::trapd::lib:/usr/share/perl5/vendor_perl/centreon/trapd/lib.pm:501)
Query: SELECT traps_oid, traps_id, traps_mode FROM traps

2022-02-15 03:54:52 - ERROR - 8723 - Cant load cache trap oids.
2022-02-15 03:54:52 - ERROR - 8723 - Dont skip trap. Need to solve the error

Thanks

Hi,

No the problem is above, to confirm that the trap is received, you can list the /var/spool/centreontrapd directory content. You will probably see files containing SNMP trap to process. 

Can you check in the config file that the mode is correctly set: in /etc/centreon/centreontrapd.pm you should have a mode => 0 directive like below: 

 

#############################################
# File Added by Centreon
#
our %centreontrapd_config = (
        # databases credentials
        centreon_db => "dbname=/etc/snmp/centreon_traps/centreontrapd.sdb",
        centstorage_db => "dbname=/etc/snmp/centreon_traps/centreontrapd.sdb",
        db_type => 'SQLite',
        # server type (0: central, 1: poller)
        mode => 0
);

1;

 

 

 

 

"It's shocking to find how many people do not believe they can learn, and how many more believe learning to be difficult." - Frank Herbert, 'Dune'.
S
Userlevel 1
Badge +2

Hello,

I have the following configuration :

[root@centreon-central ~]# ls /var/spool/centreontrapd
[root@centreon-central ~]# cat /etc/centreon/centreontrapd.pm
#############################################
# File Added by Centreon
#
our %centreontrapd_config = (
        # databases credentials
        centreon_db => "dbname=/etc/snmp/centreon_traps/centreontrapd.sdb",
        centstorage_db => "dbname=/etc/snmp/centreon_traps/centreontrapd.sdb",
        db_type => 'SQLite',
        # server type (0: central, 1: poller)
        mode => 0
);

1;

But still have the following error :


2022-02-17 11:09:50 - ERROR - 10209 - MySQL error: MySQL server has gone away (caller: centreon::trapd::lib:/usr/share/perl5/vendor_perl/centreon/trapd/lib.pm:501)
Query: SELECT traps_oid, traps_id, traps_mode FROM traps

2022-02-17 11:09:50 - ERROR - 10209 - Cant load cache trap oids.
2022-02-17 11:09:50 - ERROR - 10209 - Dont skip trap. Need to solve the error.

When i export the trap definition database i have no errors :

 

sduret
Userlevel 3
Badge +13

Hello

 

Can you edit the file /etc/centreon/centreontrapd.pm and define it like this?

#############################################
# File Added by Centreon
#
our %centreontrapd_config = (
        # databases credentials
        centreon_db => "dbname=/etc/snmp/centreon_traps/1/centreontrapd.sdb",
        centstorage_db => "dbname=/etc/snmp/centreon_traps/1/centreontrapd.sdb",
        db_type => 'SQLite',
        # server type (0: central, 1: poller)
        mode => 0
);

1;

I added the sub directory “/1/” in the SQLite database path.

 

You will need to restart centreontrapd process.

S
Userlevel 1
Badge +2

Hello

 

Can you edit the file /etc/centreon/centreontrapd.pm and define it like this?

#############################################
# File Added by Centreon
#
our %centreontrapd_config = (
        # databases credentials
        centreon_db => "dbname=/etc/snmp/centreon_traps/1/centreontrapd.sdb",
        centstorage_db => "dbname=/etc/snmp/centreon_traps/1/centreontrapd.sdb",
        db_type => 'SQLite',
        # server type (0: central, 1: poller)
        mode => 0
);

1;

I added the sub directory “/1/” in the SQLite database path.

 

You will need to restart centreontrapd process.

 

Hello, thank you for your answer, i did the modification but nothing seems changing i still have my passive checks on “pending” status.

sduret
Userlevel 3
Badge +13

Hello

Ok the service state is Pending but do you still have this kind of error message?

2022-02-15 03:54:52 - ERROR - 8723 - MySQL error: MySQL server has gone away (caller: centreon::trapd::lib:/usr/share/perl5/vendor_perl/centreon/trapd/lib.pm:501)
Query: SELECT traps_oid, traps_id, traps_mode FROM traps

2022-02-15 03:54:52 - ERROR - 8723 - Cant load cache trap oids.
2022-02-15 03:54:52 - ERROR - 8723 - Dont skip trap. Need to solve the error

Did you enabled “Submit result” on the OID definition?

S
Userlevel 1
Badge +2

Hello, there is no error message but i have now this kind of messages :

2022-02-28 10:45:44 - DEBUG - 904 - Sleeping for 2 seconds 
2022-02-28 10:45:46 - DEBUG - 904 - Sleeping for 2 seconds 
2022-02-28 10:45:48 - DEBUG - 904 - Sleeping for 2 seconds 
2022-02-28 10:45:50 - DEBUG - 904 - Sleeping for 2 seconds

Submit result is activated.

-------

I tried with a linux to manually activate a trap and it works as expected :

but when i’m trying to trap the result for a cisco switch :

i indeed recieve the trap on my centreon-central :

but still in a pending status on my monitoring interface :

thanks.

sduret
Userlevel 3
Badge +13

Can you share with us the centreontrapd debug for the trap received from your Cisco switch?

S
Userlevel 1
Badge +2

Sure :

I understand that SNMP-TRAPS has been triggered :

 

S
Userlevel 1
Badge +2

I have modify my passive check and it works now !! Thank you for your help :

I’ll try to find other use cases with other OID now, thank you so much !

sduret
Userlevel 3
Badge +13

Thanks for your feedback

Y
Badge

Hello Seaev,

 

Can I ask you how did you configure your passive check ont his host ?

 

Thanks.

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