DNS resolver does not work, how to configure or check it correctly?

Question

network hardware

I'm trying to set up virtualization on the SoyouStart (OVH) server - I seem to have set everything up correctly, but the address resolution does not work. Ping, as I understand it, goes from the virtual machine to the Internet, and the virtual machine itself is pinged. FAILOVER_IP - ip address for the virtual machine.

ping -c 2 8.8.8.8 (0% packet loss, time 1001ms)
ping -c 2 google.com
ping: unknown host google.com

I'm trying to ping the address of the virtual machine from a working computer - it seems to work.
At the same time, I can not connect to the virtual machine via SSH - timeout.

ping -c 2 FAILOVER_IP (0% packet loss, time 1001ms)
debug1: Connecting to FAILOVER_IP [FAILOVER_IP] port 22 (останавливается)

DNS for the ovh 213.186.33.99 virtual machine pings from the virtual machine and the host machine too. dns-nameservers are registered and available.

ping -c 2 213.186.33.99
PING 213.186.33.99 (213.186.33.99) 56(84) bytes of data.
64 bytes from 213.186.33.99: icmp_seq=1 ttl=60 time=1.35 ms
64 bytes from 213.186.33.99: icmp_seq=2 ttl=60 time=1.30 ms

--- 213.186.33.99 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 1.303/1.327/1.352/0.043 ms

vi /etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 213.186.33.99
nameserver 8.8.8.8
nameserver 8.8.4.4
search ovh .net

How to find out what is the problem?

Answer 1

Go through the web console and see if there is a nslookap and firewall rules