<\/p>\n\n\n\n
<\/p>\n\n\n\n
My Mellanox MSN2100 switch constantly has the “system status” LED on red since purchase.<\/p>\n\n\n\n
By looking into its system status:<\/p>\n\n\n\n
System status summary<\/p>\n\n\n\n
System status LED red
Services:
Status: OK
Hardware:
Status: Not OK
Reasons: Failed to get speed tolerance for fan4
Failed to get speed tolerance for fan3
Failed to get speed tolerance for fan2
Failed to get speed tolerance for fan1<\/p>\n\n\n\n
System services and devices monitor list<\/p>\n\n\n\n
Name Status Type
——————— ——– ———-
sonic OK System
rsyslog OK Process
root-overlay OK Filesystem
var-log OK Filesystem
routeCheck OK Program
dualtorNeighborCheck OK Program
diskCheck OK Program
container_checker OK Program
vnetRouteCheck OK Program
memory_check OK Program
container_memory_snmp OK Program
container_memory_gnmi OK Program
container_eventd OK Program
database:redis OK Process
syncd:syncd OK Process
bgp:zebra OK Process
bgp:staticd OK Process
bgp:bgpd OK Process
bgp:fpmsyncd OK Process
bgp:bgpcfgd OK Process
teamd:teammgrd OK Process
teamd:teamsyncd OK Process
teamd:tlm_teamd OK Process
swss:orchagent OK Process
swss:portsyncd OK Process
swss:neighsyncd OK Process<\/p>\n\n\n\n
swss:fdbsyncd OK Process
swss:vlanmgrd OK Process
swss:intfmgrd OK Process
swss:portmgrd OK Process
swss:buffermgrd OK Process
swss:vrfmgrd OK Process
swss:nbrmgrd OK Process
swss:vxlanmgrd OK Process
swss:coppmgrd OK Process
swss:tunnelmgrd OK Process
eventd:eventd OK Process
snmp:snmpd OK Process
snmp:snmp-subagent OK Process
lldp:lldpd OK Process
lldp:lldp-syncd OK Process
lldp:lldpmgrd OK Process
gnmi:gnmi-native OK Process
fan1 Not OK Fan
fan2 Not OK Fan
fan3 Not OK Fan
fan4 Not OK Fan
ASIC OK ASIC
PSU 1 OK PSU
PSU 2 OK PSU<\/p>\n\n\n\n
System services and devices ignore list<\/p>\n\n\n\n
Name Status Type
————— ——– ——
psu.voltage Ignored Device
psu.temperature Ignored Device<\/p>\n\n\n\n
<\/p>\n\n\n\n
It shows that it cannot obtain fan tolerance data from the database.<\/p>\n\n\n\n
Researching the system files, it is found in file \/usr\/local\/lib\/python3.9\/dist-packages\/sonic_platform\/fan.py, the fan tolerance is hard set to 50%. And this is not passed to \/usr\/local\/lib\/python3.9\/dist-packages\/health_checker\/hardware_checker.py via function data_dict.get(‘speed_tolerance’, None)<\/p>\n\n\n\n
There is a simple fix of this: comment out the line #105 of the hardware_checker.py , replace it a hard setting<\/p>\n\n\n\n
speed_tolerance = 50<\/p>\n\n\n\n
And the system status LED turns green.<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
My Mellanox MSN2100 switch constantly has the “system status” LED on red since purchase. By looking into its system status: show system-health detail System status summary System status LED redServices:Status: OKHardware:Status: Not OKReasons: Failed to get speed tolerance for fan4Failed to get speed tolerance for fan3Failed to get speed tolerance for fan2Failed to get speed […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,3],"tags":[],"class_list":["post-727","post","type-post","status-publish","format-standard","hentry","category-computer-tips","category-mri-technical-support","post-blog"],"_links":{"self":[{"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=\/wp\/v2\/posts\/727","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=727"}],"version-history":[{"count":1,"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=\/wp\/v2\/posts\/727\/revisions"}],"predecessor-version":[{"id":728,"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=\/wp\/v2\/posts\/727\/revisions\/728"}],"wp:attachment":[{"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csic.som.emory.edu\/~lzhou\/blogs\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}