On Wed, Jan 13, 2016 at 09:55:53AM +0200, Shahar Havivi wrote: > Hi, > > I am successfully importing VM from Xen server at oVirt project via virt-v2v. > I am setting ssh-agent and running ssh-add before the import process, > after the import done I am trying to kill the agent via: > ssh-agent -k (and setting the SSH_AGENT_PID environment), but I get the > following error: > kill: No such process > > Can you please explain why there is no agent? When you run: eval `ssh-agent`

ssh-agent starts up and creates several environment variables (which are added to the environment, because you use the eval `..`). In particular it sets SSH_AGENT_PID to its own PID. ssh-agent -k is supposed to read SSH_AGENT_PID from the environment and kill the previously started ssh-agent process, basically killing that PID. It works for me and for lots of other people, so I'm guessing you must either be running ssh-agent wrongly the first time, or getting the SSH_AGENT_PID environment variable mixed up somewhere. > Do I need to delete the agent? Not necessarily, but if you don't kill the agent then two bad things can happen: (1) You get lots of ssh-agent processes building up (2) The ssh-agent processes may be storing your unencrypted private keys. Except that ... > btw I am also running 'ssh-add -d' after the import process with no problems. ... ssh-add -d will remove the private key from the agent. However the agent should still be running after this, so it would have no effect on whether ssh-agent -k would succeed. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/

On Wed, Jan 13, 2016 at 12:49:19PM +0200, Shahar Havivi wrote: > On 13.01.16 10:27, Richard W.M. Jones wrote: > > When you run: > > > > eval `ssh-agent` > > I didn't run eval `ssh-agent` but ssh-agnet and then ssh-add (I > needed the SSH_AUTH_SOCK that return from ssh-agent since I am > running two different processes). > > I guess I can read the environment SSH_AUTH_SOCK after run eval > `ssh-agent`... > > do you think there is a different between running with to without eval? Yes - very different. If you don't use the eval then no SSH_* environment variables are set.

What probably happened just after that is you added the key to your X session's ssh-agent -- most desktop session managers start an instance of ssh-agent for you. Another way to run ssh-agent which may be more appropriate for scripting is: ssh-agent command args ... which runs the command straight after and kills ssh-agent when the command ends. It would be tempting to run: ssh-agent virt-v2v ... but that won't work because you still have to arrange for the ssh key to be added to virt-v2v's instance of ssh-agent. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW