Re: [ovirt-devel] [ovirt-system-tests] ssh to an oVirt VM in Lago

Valentina Makarova <makarovavs07(a)gmail.com&gt; writes: > I may use a pakamiko only like this : > https://github.com/vmakarova/ovirt-system-tests/commit/ > 3e9e5ce697da7e0567aaad8397fa886469bc5ae3 > Lago also use pakamiko, so there is not new dependencies. > > Is this a good way? If we don't have higher level means to access VMs via ssh in Lago/Ovirt-System-Tests (do we?) then I'd say using paramiko is fine. > And few more questions about tests and ovirt network. > > 1) This address of vm0 192.168.201.213. What is this addres? Why it is > ip of 'vm0'? What gave it to vm0 and how the user may to understand > that the address would be that? There is not this ip in virsh > net-list and net-dumpxml It's probably obtained from DHCP, it's in the DHCP range specified in LagoInitFile (*.100-*.254). > 2) In test vm_run (004_basic_sanity) we configure interface eth0 on > vm0 with ip 192.168.200.200. But this interface is unreacheble from > engine-host.And when I ask vm0 'ip address' via ssh, there is not > interface eth1 there. What for does test add it, if it does not work? > Should it work? And why test finished successful if eth0 was not > configured according a start_params? Good questions. The complex setup in vm_run looks somewhat mysterious. But we should be able to use the Yaniv's suggestion: > 2017-05-31 23:06 GMT+03:00 Yaniv Kaul <ykaul(a)redhat.com&gt;: [...] >> We can add a fake entry in Lago init file just as we do for hosted-engine. >> Most importantly, it'll create a MAC to IP address mapping in libvirt's >> DHCP. >> Of course, then we need to use this MAC. If I understand it correctly: - We can create a fake VM in LagoInitFile. How do we specify it's fake, is it the vm-provider entry?

- If we assign IP to that VM, the mapping for DHCP is automatically created, and the MAC address is determined by lago.utils.ipv4_to_mac.

- Then we can specify `nics' parameter to params.VM constructor or to add a NIC to the VM as in add_nic test (but I'm not sure sshd would be available on it in that case).

Thanks, Milan