KVM VM login with ssh
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Hi all,
how i can login as root to a KVM-VM over SSH? Does anyone have a command?
We would check, if KVM VM have the right ip adress. or have anyone a command for check this as root on node?
Very thanks and best regards
Hi,
why you want to login for that? What happens if ssh isn't open on this VM?
If your pve-node has an IP on that bridge, you can build an script for that - or simply test with:
Code:
root@proxmox1:~# arping -c 1 -I vmbr23 172.20.3.151
ARPING 172.20.3.151 from 172.20.3.61 vmbr23
Unicast reply from 172.20.3.151 [BE:19:E2:BD:21:99] 0.633ms
Sent 1 probes (1 broadcast(s))
Received 1 response(s)
root@proxmox1:~# grep -i BE:19:E2:BD:21:99 /etc/pve/qemu-server/*
/etc/pve/qemu-server/101.conf:net0: e1000=BE:19:E2:BD:21:99,bridge=vmbr23Hi udo,
thats right, but with this test, i do not get the ip addresses of the VM. I would check, it the VM have the right ip address and not a wrong address.
It´s a VM with own ip address (ipv4 and ipv6) and i would list all ips of this vm - you´re understand, what i mean?
arp -a do not list this vm and his ip-adresses!
thanks and best regards
thats right, but with this test, i do not get the ip addresses of the VM. I would check, it the VM have the right ip address and not a wrong address.
It´s a VM with own ip address (ipv4 and ipv6) and i would list all ips of this vm - you´re understand, what i mean?
arp -a do not list this vm and his ip-adresses!
thanks and best regards
Last edited:
Hi,
if your pve-host havn't an IP on that bridge, you can use tcpdump for that (but need to wait a little bit):
Udo
if your pve-host havn't an IP on that bridge, you can use tcpdump for that (but need to wait a little bit):
Code:
# grep net0 /etc/pve/qemu-server/150.conf
net0: virtio=1A:E1:7E:55:D0:6A,bridge=vmbr90
# tcpdump -n -i vmbr90 | grep -i "1A:E1:7E:55:D0:6A"
tcpdump: WARNING: vmbr90: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on vmbr90, link-type EN10MB (Ethernet), capture size 65535 bytes
15:28:51.748813 ARP, Reply 192.168.40.27 is-at 1a:e1:7e:55:d0:6a, length 28Hi,
of course you get the IP address and the mac address - and the mac adress is fixed in the VM-config.
Udo
of course you get the IP address and the mac address - and the mac adress is fixed in the VM-config.
Udo
Hi,
ok. Also, if i dont get an ip address, the vm was not configured correctly, right?
thanks and best regards @udo
Hi,
with "arping" yes, with "arp -a" no.
"arp -a" shows only the ip-addresses which used by host-communication.
Udo
Hi udo,
arping -c 1 -I vmbr23 172.20.3.151, is this ip-address the address of node?
regards
Hi,
right - use arping with the IP to get the mac-address (same network).
Then you can compare the mac-address with the vm-config.
Udo
Hi udo,
ok, but the VM is online with a IPv4 or IPv6 address (i can see traffic in interface), but if i use the command, i don´t get a answer/information of this vm/ip. i don´t understand it,,,
Do you have a other idea, to check, which ip the vm has?
best regards and very thanks for your informations.
ok, but the VM is online with a IPv4 or IPv6 address (i can see traffic in interface), but if i use the command, i don´t get a answer/information of this vm/ip. i don´t understand it,,,
Do you have a other idea, to check, which ip the vm has?
best regards and very thanks for your informations.
Hi udo,
ok, but the VM is online with a IPv4 or IPv6 address (i can see traffic in interface), but if i use the command, i don´t get a answer/information of this vm/ip. i don´t understand it,,,
Do you have a other idea, to check, which ip the vm has?
best regards and very thanks for your informations.
Hi,
use the way with tcpdump to see which IP address the VM use.
Udo