URGENT - Constant "Network Interface Speed Unknown" and "Agent Status Bad" errors in cloudera manager

The speed unknown is simply stating that the agent could not collect the data that would allow the speed to be tested.

The agent status being Bad, most likely means that the agent may not be heart - beating in. When this happens, check the heartbeat from the Host page.

@yagoaparecidoti This alert comes when agent is not able to collect data using ethtool <device name> command. 

More specifically at the time of the issue if you run the command from host. 

 ethtool eth0    <-----------Start replacing eth0 with other network interfaces 

and in the output you will see

Speed: Unknown <<<<<<<<<<<<<<<<<<<<<<<<<<<<< THIS

Duplex: Unknown <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< THIS

Which needs network review. 

While the healthy output from host should look like this: 

# Expected behaviour
[root@host-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
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Link detected: yes

@yagoaparecidoti Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future. Thanks!

There can be several reasons that can cause this.

Run host inspector to get a better understanding of the issue:

CM -> Hosts -> All Hosts -> Inspect Hosts