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SNMP error seen on supervisor in chassis #9996

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SuvarnaMeenakshi opened this issue Feb 16, 2022 · 0 comments · Fixed by sonic-net/sonic-snmpagent#246
Closed

SNMP error seen on supervisor in chassis #9996

SuvarnaMeenakshi opened this issue Feb 16, 2022 · 0 comments · Fixed by sonic-net/sonic-snmpagent#246
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@SuvarnaMeenakshi
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Chassis 🤖 Modular chassis support chassis-packet

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@SuvarnaMeenakshi
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Description

SNMP queries fail on supervisor because periodic data update for MIBs fail due to "Key '{COUNTERS_PORT_NAME_MAP}' unavailable in database '{COUNTERS_DB}'" error.

Steps to reproduce the issue:

Always seen on chassis supervisor

Describe the results you received:

Key '{COUNTERS_PORT_NAME_MAP}' unavailable in database '{COUNTERS_DB}' seen continuously in syslog.

Describe the results you expected:

Output of show version:

(paste your output here)

Output of show techsupport:

(paste your output here or download and attach the file here )

Additional information you deem important (e.g. issue happens only occasionally):
@SuvarnaMeenakshi SuvarnaMeenakshi self-assigned this Feb 16, 2022
@SuvarnaMeenakshi SuvarnaMeenakshi mentioned this issue Mar 16, 2022
Merged
@vivekrnv vivekrnv mentioned this issue Mar 21, 2022
Open
SuvarnaMeenakshi added a commit to sonic-net/sonic-snmpagent that referenced this issue Mar 28, 2022
@SuvarnaMeenakshi
Handle error seen on system where vlan interface map is not present (#…
2151731 
…246)

fixes sonic-net/sonic-buildimage#9996
Handle error seen on system where vlan interface map is not present.
This change requires: sonic-net/sonic-py-swsssdk#117
On chassis platform, on supervisor there are not ports available in config_db. So, there is no vlan interface map in counters db, which causes this error in syslog:

ERROR: MIBUpdater.start() caught an unexpected exception during update_data(). RuntimeError: Key '{COUNTERS_RIF_NAME_MAP}' unavailable in database '{COUNTERS_DB}'
- How I did it
Return empty dict if vlan interface map is not present in DB.
SuvarnaMeenakshi added a commit to SuvarnaMeenakshi/sonic-snmpagent that referenced this issue Apr 11, 2022
@SuvarnaMeenakshi
[20211] Handle error seen on system where vlan interface map is not p…
41242ac 
…resent

fixes sonic-net/sonic-buildimage#9996
Handle error seen on system where vlan interface map is not present.
This change requires: sonic-net/sonic-py-swsssdk#117
On chassis platform, on supervisor there are not ports available in config_db. So, there is no vlan interface map in counters db, which causes this error in syslog:

ERROR: MIBUpdater.start() caught an unexpected exception during update_data(). RuntimeError: Key '{COUNTERS_RIF_NAME_MAP}' unavailable in database '{COUNTERS_DB}'
- How I did it
Return empty dict if vlan interface map is not present in DB.

(cherry picked from commit 2151731)
Signed-off-by: Suvarna Meenakshi <sumeenak@microsoft.com>
@SuvarnaMeenakshi SuvarnaMeenakshi mentioned this issue Apr 11, 2022
Merged
SuvarnaMeenakshi added a commit to sonic-net/sonic-snmpagent that referenced this issue Apr 13, 2022
@SuvarnaMeenakshi
[202111] Handle error seen on system where vlan interface map is not …
004b9a4 
…present (#252)

- What I did
cherrypick of: #246
fixes sonic-net/sonic-buildimage#9996
Handle error seen on system where vlan interface map is not present.
This change requires: sonic-net/sonic-py-swsssdk#117
On chassis platform, on supervisor there are not ports available in config_db. So, there is no vlan interface map in counters db, which causes this error in syslog:

ERROR: MIBUpdater.start() caught an unexpected exception during update_data()#012Traceback (most recent call last):#12  File "/usr/local/lib/python3.7/dist-packages/ax_interface/mib.py", line 37, in start#012    self.reinit_data()#12  File "/usr/local/lib/python3.7/dist-packages/sonic_ax_impl/mibs/ietf/rfc1213.py", line 233, in reinit_data#012    self.vlan_oid_name_map = Namespace.get_sync_d_from_all_namespace(mibs.init_sync_d_vlan_tables, self.db_conn)#12  File "/usr/local/lib/python3.7/dist-packages/sonic_ax_impl/mibs/__init__.py", line 649, in get_sync_d_from_all_namespace#012    ns_tuple = per_namespace_func(db_conn)#12  File "/usr/local/lib/python3.7/dist-packages/sonic_ax_impl/mibs/__init__.py", line 339, in init_sync_d_vlan_tables#012    vlan_name_map = port_util.get_vlan_interface_oid_map(db_conn)#12  File "/usr/local/lib/python3.7/dist-packages/swsssdk/port_util.py", line 167, in get_vlan_interface_oid_map#012    rif_name_map = db.get_all('COUNTERS_DB', 'COUNTERS_RIF_NAME_MAP', blocking=True)#12  File "/usr/lib/python3/dist-packages/swsscommon/swsscommon.py", line 1751, in get_all#012    return dict(super(SonicV2Connector, self).get_all(db_name, _hash, blocking))#12  File "/usr/lib/python3/dist-packages/swsscommon/swsscommon.py", line 1708, in get_all#012    return _swsscommon.SonicV2Connector_Native_get_all(self, db_name, _hash, blocking)#012RuntimeError: Key '{COUNTERS_RIF_NAME_MAP}' unavailable in database '{COUNTERS_DB}'
- How I did it
Return empty dict if vlan interface map is not present in DB.
- How to verify it
With this fix, no error in syslog message.
Able to execute other MIB queries on supervisor.
UT passes.
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Handle error seen on system where vlan interface map is not present SuvarnaMeenakshi/sonic-snmpagent
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