5:27 a.m.
Hi all,
Is there a documented way to connect to lago VMs where lago runs on a
remote machine?
I realize I can use ssh, ssh with tunelling, 'lago shell', etc., but
this is a bit uncomfortable.
Case in point:
I want to use OST on some machine (not my laptop) and use it to debug
imageio after ovirt-engine-rename. So I need to:
1. Get OST, e.g. basic suite, running
2. Verify that imageio works - here is where I am stuck. Ideally, I'd
like to be able to run a browser on my laptop and upload an image
directly to the OST env.
3. Run rename
4. Try again to upload an image and fix the broken stuff :-)
I realize that two solutions I can already use might be:
1. Run a browser, or perhaps a proxy, on the OST machine
2. Create a complex set of ssh tunnels
Anything else?
Thanks,
--
Didi
11:17 a.m.
Hi,
The most common way is to use SSH forwarding (local port).
You can find an example in [1].
Please make sure to update /etc/hosts with a mapping from "engine" to the
engine's
VM IP, otherwise the UI and imageio will not work.
[1] -
https://ovirt-system-tests.readthedocs.io/en/latest/general/running_tests...
On Wed, Sep 12, 2018 at 1:27 PM, Yedidyah Bar David <didi(a)redhat.com> wrote:
--
*GAL bEN HAIM*
RHV DEVOPS
1:47 a.m.
On Wed, Sep 12, 2018 at 7:17 PM, Gal Ben Haim <gbenhaim(a)redhat.com> wrote:
Hi,
The most common way is to use SSH forwarding (local port).
Yes, that's what I was doing, but was hoping for something better.
The problem with this is that I have to use custom ports, and to know
beforehand the names. Even then, things such as pressing the "Console"
button of a vm in the admin ui do not work - at least in my case, the
vnc client tried to connect to the host's IP address, not to a name.
So I couldn't fake a connection by adding an ssh tunnel and an entry
to /etc/hosts.
How about e.g. making lago use a bridged network, instead of a NATted
one? Or something like that? I see that I can change the network type
in the lago init file to 'bridge'. Is this supported? In use? Documented?
Now going to try...
--
Didi
4:39 a.m.
On Thu, Sep 13, 2018 at 9:47 AM Yedidyah Bar David <didi(a)redhat.com> wrote:
A month later, an update:
Network type 'bridge' didn't work for me.
I managed to do what I wanted by using ssh -w. After spending quite a lot
of time trying this without success, I searched and found this:
https://unix.stackexchange.com/questions/268690/for-some-reason-sudo-ssh-...
sudo ssh -o Tunnel=ethernet -w 1:1 didi-box2
This created a tap1 device on both my laptop and didi-box2.
Not sure which bridge I should connect to, on didi-box2. So did this:
$ cd /home/ybardavi/git/ovirt-system-tests/deployment-basic-suite-master
$ lago shell engine
# grep FQDN /etc/ovirt-engine/engine.conf.d/*conf
ENGINE_FQDN=engine
# grep engine /etc/hosts
192.168.201.4 engine
# ip a
The devide with above address is eth0. It has mac address 54:52:c0:a8:c9:04
On didi-box2:
# ip a
No device there has that mac address. Closest one is vnet8, with
fe:52:c0:a8:c9:04 .
# brctl show
vnet8 is in the bridge c946-7428207 .
TODO Make all of above easier. E.g.:
1. Rename VM interfaces to show function - instead of 'eth0', call it
'mgmt', etc.
2. Rename host interfaces to show function - 'vnet8' -> 'engine-mgmt',
or 'engine-mgmt-$RANDOM'
3. Rename host bridges to show function - e.g. 'c946-7428207' ->
'mgmt' (or 'mgmt-$RANDOM')
Now:
on didi-box2:
# brctl addif c946-7428207 tap1
# ip link set tap1 up
On didi-lap:
# brctl addbr ost-mgmt
# brctl addif ost-mgmt tap1
# ip link set tap1 up
# dhclient -1 ost-mgmt
# ip a
ost-mgmt got 192.168.201.4
Now added to didi-lap's /etc/hosts:
192.168.201.4 engine
Then connected with a browser on didi-lap to https://engine/ and it worked.
Later, noticed that this killed my Internet connectivity. Checked
and fixed with:
ip route del default via 192.168.201.1 dev ost-mgmt
TODO: Fix that too.
Perhaps we can (optionally?) add custom configuration to the dhcp
server to not pass a default gateway to some range of MAC addresses,
or something like that.
Best regards,
--
Didi
2460
days inactive
2494
days old
3 comments
2 participants
participants (2)
-
Gal Ben Haim -
Yedidyah Bar David