Cloudera Manager Reports "Network Interface Speed" Health Warning

Asset ID:	1-72-2075973.1
Update Date:	2016-10-11
Keywords:

Solution Type Problem Resolution Sure

Solution 2075973.1 : Cloudera Manager Reports "Network Interface Speed" Health Warning

Applies to:

Big Data Appliance Integrated Software - Version 3.0.1 and later
Big Data Appliance Hardware - Version All Versions and later
Linux x86-64

Symptoms

On Oracle Big Data Appliance CDH cluster , Cloudera Manager (CM) reports health warning for Host/s about "Network Interface Speed"

CM Warning

Executing ethtool command reports that eth0 is only running on 100 Mbps instead of 1000, on one or more nodes in the BDA cluster

# dcli -C 'ethtool eth0|grep -i speed'

BDANode01: Speed: 1000Mb/s
...
BDANodenn: Speed: 100Mb/s

Cause

Mostly due to Cisco Ethernet Switch or Cable issue.

Also internal bug 22161872 filed to enhance bdacheckhw script to detect ethernet interface speed settings and throw a warning accordingly.

Solution

1) Trying setting the speed manually and see if it helps.

ethtool -s eth0 speed 1000 duplex full
ethtool eth0|grep -i speed

2) If setting the speed doesn't help then see rebooting the node is an option.

3) If non of the above help then open an SR , so HW team will be consulted to check for any issues with the switch or the cables.

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