Support Questions
Find answers, ask questions, and share your expertise
Check out our newest addition to the community, the Cloudera Innovation Accelerator group hub.


New Contributor

hello cloudera comunity ,


we are having the next issue from   cloudera manager


The health test result for HOST_NETWORK_INTERFACES_SLOW_MODE has become unknown: Not enough data to test: Test of whether the host has network interfaces that appear to be operating at less than full speed.



also we make a research for this and the interface speed looks fine and there is no restrictions of velocity.


any one have a issue like this ?


the version of  cloudera its Versión: Cloudera Enterprise 5.14.4



@rhad84 The "unknown" statuses are normally when the agent could not collect monitoring data or the data had “unkonwn” status.

Specifically when Agent attempted to collect network interface speed, the device didn't return any data or the data returned was “Unkonwn” at the time period of the alert.

The collection is equivalen to the doing ethtool <device name>

# Expected behaviour
[root@nightly70x-1 ~]# ethtool eth0
Settings for eth0:
Supported ports: [ ]
Supported link modes: Not reported
Supported pause frame use: No
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s <<<<<<<<<<<<<<<<<<<<<<<<<<<<< THIS
Duplex: Full <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< THIS
Port: Twisted Pair
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Link detected: yes

Example of "Unknown" is : 

Screenshot 2020-02-05 at 13.03.41.png

So you have to fix this at network level or you can suppress the Alerts if you think networking is good. 

Was your question answered? Make sure to mark the answer as the accepted solution.
If you find a reply useful, say thanks by clicking on the thumbs up button.