Steve Brueckner wrote:
>Mike McGrath wrote:
>
>
>>Steve Brueckner wrote:
>>
>>
>>
>>>I need to create an ssh port forwarding tunnel to another machine
>>>when my Xen VM starts up, so I added this to the VM's
>>>/etc/rc.d/rc.local:
>>>
>>>ssh -f -L 5500:localhost:5501 remote_host_ip tail -f /dev/null
>>>
>>>This causes my VM to pause for about 3 minutes during boot right
>>>after "Starting HAL daemon: [ OK ]"
>>>Furthermore, the ssh tunnel never gets created.
>>>
>>>I have null-passphrase authentication keys working, so I can execute
>>>the tunnel manually after I log in. So why won't the tunnel work
>>>before I log in?
>>>
>>>I don't get any errors in /var/log/messages, just a 3-minute gap
>>>between entries. Is there anywhere else I can look to find
>>>potential error messages?
>>>
>>>When I try the same trick on the bare-metal host machine, it works
>>>fine: no 3-minute stall and the ssh tunnel is created fine. So I
>>>suppose what I need is a way to find or create error messages so I
>>>can diagnose further. Maybe then I can take this to the Xen list.
>>>
>>>Stephen Brueckner, ATC-NY
>>>
>>>
>>>
>>>
>>>
>>I use the following method to create ssh tunnels on startup: (in
>>inittab)
>>
>>log1:3:respawn:/usr/bin/ssh -nNtx -R 5500:localhost:5501
>>remote_host_ip > /dev/null 2>&1
>>
>>This, however, may not solve your problem. Are you sure you're
>>public and private keys are in the right spot and have the correct
>>permissions?
>>
>> -Mike
>>
>>
>
>My permissions are OK, since I can run the command manually after
>login. I just tried adding -vvv to the ssh command, and it's hanging
>on:
>
>"Debug1: Connecting to (remote_IP) port 22."
>
>So I also tried adding a wget into rc.local, and wget fails with:
>
>"Resolving download.fedora.redhat.com... Failed: Host not found."
>
>So my guess is that Xen isn't bringing up the network for the VM until
>after login.
>
>
>
On the remote machine, (not the VM) try running a TCP dump to see if
anything is getting sent to that machine from the VM.
-Mike
