Network problems immediately after installation

[turkeyman]

I've performed a fresh installation in an ESXi host, no funny business, just straight from the installation image.
Installation appears to go well, but when the installation completes and restarts, it shows this "Waiting for network" thing, where it sits for a while, and then after a while "Could not connect to 3CX server. Please check your internet connection and try again."

Can someone tell me the server it's trying to connect to so I can confirm connectivity? What's the URL/IP of the server it's trying to reach?

When I flip to a terminal and test the machine has network connectivity, it does have network connectivity, except it performs REALLY slow for some reason.
If I ping IP addresses, the ping times are fine. If I ping a domain name, the DNS resolution takes a long time, and then it proceeds to ping normally.
If I traceroute, I just get stars.

My local IP is assigned by DHCP; it assigns a statically mapped IP for the MAC address. Network seems to be 'working', except the weird DNS issue... I guess that's a symptom of the problem.

If I create another VM in the same environment and boot a ubuntu live image for instance, everything works perfectly, and so does every other device on this network.
I'm not sure what in my network config could be causing this issue. I don't know how to diagnose this... can anyone offer any suggestions?

Please help? >_<

 

[cobaltit]

So this isn't a 3CX issue. The ISO is vanilla Debian with a couple scripts and the 3CX packages.

What version of ESXi? Which NIC emulation? What DNS servers are you using?

 

[turkeyman]

Hmmm. Well, I mean, it is a 3CX issue insomuch as that the 3CX installer doesn't produce a working installation... but cool, that gives me another avenue to look on the debian forums.

ESXi 7.0 U1
NIC emu: VMXNET 3
DNS server assigned by DHCP, it's my ISP with google secondary.

And like I say, if I launch a live ubuntu image on the same VM, the network works fine.

 

[turkeyman]

If there a reference anywhere detailing what these scripts do when installing, so I can replicate the installation using my own distro? I'll just use ubuntu server which seems to be working well.

 

[NickD_3CX]

I would certainly start with what cobaltit implied, fixing the DNS issue. The fact that a Live Ubuntu works fine doesn't mean that your Debian installation is OK.

Hmmm. Well, I mean, it is a 3CX issue insomuch as that the 3CX installer doesn't produce a working installation...

I disagree, you need to track down and fix the DNS issue.

There is a relevant thread where someone had a similar problem here:
https://www.3cx.com/community/threa...ed-doesnt-run-setup-script.78622/#post-361136

The scripts simply download 3CX and the relevant packages, other than this, it is a default Debian ISO.

An alternative solution for you to get 3CX up and running would be to contact a 3CX partner for help:
https://www.3cx.com/ordering/find-reseller/