When Secondary SpectroSERVER is active in a fault tolerant environment, we are not able to SSH into our SDC devices

Products

• Network Observability

Issue/Introduction

We have noticed that during fault tolerance failover, that when our Secondary SpectroSERVER is active, we are no longer able to connect to our devices in the Secure Domain Connector (SDC) through SSH or telnet.

When we open a telnet / SSH window in OneClick, we enter the correct username and password and it immediately disconnects with the error message "ªUnable to SSH to the device.  Please check the device to make sure SSH is configured and running properly".

Environment

Spectrum :  ANY

SSH / Telnet to devices through an SDC

Cause

Telnetd service is still running on the Primary, and this causes the SSH / Telnet connect to try and route through the Primary SS which is down.

Resolution

When the Primary SS is down, you will also need to bring down telnetd process.  This can be accomplished either by using cmdC or by stopping processd if the OneClick server is on a different server then the SpectroSERVER.

Additional Information

KB article on how to use cmdC to stop Spectrum processes under processd.