"Caught exception while running thermal policy - NameError("name 'chassis' is not defined")" in syslog

[wangxin]

Description

Steps to reproduce the issue:

1. SONiC switch is running normally. Observed ERR message in syslog like below:

admin@str-dx010-acs-4:~$ sudo grep -E "NameError" /var/log/syslog
Apr  7 07:43:41.055208 str-dx010-acs-4 ERR pmon#thermalctld: Caught exception while running thermal policy - NameError("name 'chassis' is not defined")
Apr  7 07:49:41.372162 str-dx010-acs-4 ERR pmon#thermalctld: message repeated 6 times: [ Caught exception while running thermal policy - NameError("name 'chassis' is not defined")]
Apr  7 07:50:41.056397 str-dx010-acs-4 ERR pmon#thermalctld: Caught exception while running thermal policy - NameError("name 'chassis' is not defined")
Apr  7 07:51:41.056648 str-dx010-acs-4 ERR pmon#thermalctld: Caught exception while running thermal policy - NameError("name 'chassis' is not defined")
Apr  7 07:57:12.764471 str-dx010-acs-4 ERR pmon#thermalctld: message repeated 5 times: [ Caught exception while running thermal policy - NameError("name 'chassis' is not defined")]
Apr  7 07:57:41.057598 str-dx010-acs-4 ERR pmon#thermalctld: Caught exception while running thermal policy - NameError("name 'chassis' is not defined")
Apr  7 07:59:59.806807 str-dx010-acs-4 ERR pmon#thermalctld: message repeated 2 times: [ Caught exception while running thermal policy - NameError("name 'chassis' is not defined")]
Apr  7 08:00:41.058106 str-dx010-acs-4 ERR pmon#thermalctld: Caught exception while running thermal policy - NameError("name 'chassis' is not defined")

Describe the results you received:

Observed ERR message in syslog:
Apr 7 07:43:41.055208 str-dx010-acs-4 ERR pmon#thermalctld: Caught exception while running thermal policy - NameError("name 'chassis' is not defined")

Describe the results you expected:

No such ERR message in syslog.

Output of show version:

admin@str-dx010-acs-4:~$ show version

SONiC Software Version: SONiC.HEAD.595-0b16ca4a
Distribution: Debian 10.9
Kernel: 4.19.0-12-2-amd64
Build commit: 0b16ca4a
Build date: Tue Apr  6 20:36:38 UTC 2021
Built by: johnar@jenkins-worker-22

Platform: x86_64-cel_seastone-r0
HwSKU: Celestica-DX010-C32
ASIC: broadcom
ASIC Count: 1
Serial Number: DX010F2B118711MS100007
Uptime: 08:08:43 up 26 min,  2 users,  load average: 7.74, 5.63, 4.29

Docker images:
REPOSITORY                    TAG                 IMAGE ID            SIZE
docker-orchagent              HEAD.595-0b16ca4a   fc72221204aa        428MB
docker-orchagent              latest              fc72221204aa        428MB
docker-snmp                   HEAD.595-0b16ca4a   d76d8a4d3d66        439MB
docker-snmp                   latest              d76d8a4d3d66        439MB
docker-platform-monitor       HEAD.595-0b16ca4a   3f565ee7d2c2        607MB
docker-platform-monitor       latest              3f565ee7d2c2        607MB
docker-syncd-brcm             HEAD.595-0b16ca4a   1fe34921083b        690MB
docker-syncd-brcm             latest              1fe34921083b        690MB
docker-sflow                  HEAD.595-0b16ca4a   3b96b2b8264e        410MB
docker-sflow                  latest              3b96b2b8264e        410MB
docker-nat                    HEAD.595-0b16ca4a   38d34aebe72e        412MB
docker-nat                    latest              38d34aebe72e        412MB
docker-router-advertiser      HEAD.595-0b16ca4a   0ba2df86bf55        398MB
docker-router-advertiser      latest              0ba2df86bf55        398MB
docker-lldp                   HEAD.595-0b16ca4a   e23c23c82d0a        438MB
docker-lldp                   latest              e23c23c82d0a        438MB
docker-database               HEAD.595-0b16ca4a   7a91344e5bd5        398MB
docker-database               latest              7a91344e5bd5        398MB
docker-macsec                 HEAD.595-0b16ca4a   6a5aae1a9dc4        412MB
docker-macsec                 latest              6a5aae1a9dc4        412MB
docker-sonic-telemetry        HEAD.595-0b16ca4a   fb526213a380        488MB
docker-sonic-telemetry        latest              fb526213a380        488MB
docker-dhcp-relay             HEAD.595-0b16ca4a   5239440bce92        405MB
docker-dhcp-relay             latest              5239440bce92        405MB
docker-sonic-mgmt-framework   HEAD.595-0b16ca4a   2537e8699e7e        617MB
docker-sonic-mgmt-framework   latest              2537e8699e7e        617MB
docker-fpm-frr                HEAD.595-0b16ca4a   badc3d72f874        427MB
docker-fpm-frr                latest              badc3d72f874        427MB
docker-teamd                  HEAD.595-0b16ca4a   cb3472016727        409MB
docker-teamd                  latest              cb3472016727        409MB

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):

[jleveque]

Bug is fixed by sonic-net/sonic-platform-daemons#170. This issue will be closed with the submodule update.