Error in ssh?

asked 2018-10-24 01:46:18 -0600

updated 2018-10-27 03:46:07 -0600

In my OpenStack ocata environment there are many Virtual Machines are running, but in this environment, there is one ubuntu VM not accepting ssh connection

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  1. check security-group for the project the VM is assigned to.
  2. is the ssh daemon running within the VM?
eblock gravatar imageeblock ( 2018-10-24 03:20:36 -0600 )edit

rules are allowed in security group and ssh daemon also running

Eranachandran gravatar imageEranachandran ( 2018-10-24 04:17:04 -0600 )edit

Then you'll have to trace the packets (e.g. tcpdump) and find out where they are dropped.

eblock gravatar imageeblock ( 2018-10-24 04:22:47 -0600 )edit

If you are able to access the vm console ( default via nova vnc ) , check if ssh services are running on the virtual machine locally , you can issue the command ssh localhost or telnet localhost 22 , if this is good then you need to perform network troubleshoot.

Mohit gravatar imageMohit ( 2018-10-27 11:12:51 -0600 )edit

The problem is firewall blocked 22 port after changed the ssh port that's working fine

Eranachandran gravatar imageEranachandran ( 2018-10-28 06:57:22 -0600 )edit