Help accessing new server via webui

[Kohvou]

I'm new to proxmox and I am a large noob so any help would be greatly appreciated. I recently setup a server and after installation I cannot access the web ui. via my browser. The error message I am getting is:

The connection has timed out

An error occurred during a connection to 192.168.100.251:8006.

The site could be temporarily unavailable or too busy. Try again in a few moments.
If you are unable to load any pages, check your computer’s network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

 

[Dunuin]

Don't use the default subnet 192.168.100.0/24 if thats not what your router is using. A 192.168.100.0/24 subnet means only computers with IPs between 192.168.100.1 and 192.168.100.255 can reach the server. If the computer your try to access your servers webUI with hasn't got such a IP you won't be able to access it.
So login into your routers webUI and look what its DHCP range is. You don't want to use a IP in that range. Also look if there are any hosts with static IPs connected to your router. You don't want to use these again. Then select a free IP of your routers subnet and install Proxmox VE again using a correct IP.

 

[Neobin]

And don't forget to use httpS. http will not work.

 

[Kohvou]

Don't use the default subnet 192.168.100.0/24 if thats not what your router is using. A 192.168.100.0/24 subnet means only computers with IPs between 192.168.100.1 and 192.168.100.255 can reach the server. If the computer your try to access your servers webUI with hasn't got such a IP you won't be able to access it.
So login into your routers webUI and look what its DHCP range is. You don't want to use a IP in that range. Also look if there are any hosts with static IPs connected to your router. You don't want to use these again. Then select a free IP of your routers subnet and install Proxmox VE again using a correct IP.

So if the end of my DHCP range is 192.168.71.250, I should change my ip for my server to be something like 192.168.71.255?

 

[Kohvou]

And don't forget to use httpS. http will not work.

Yeah I have been using the https but still no luck

 

[Dunuin]

So if the end of my DHCP range is 192.168.71.250, I should change my ip for my server to be something like 192.168.71.255?

The last IP is usually reserved for broadcasting. But 192.168.71.251 to 192.168.71.254 would be fine then. Also don't forget to set 192.168.71.1 as the gateway and DNS server in case 192.168.71.1 is your routers IP.

 

[Kohvou]

The last IP is usually reserved for broadcasting. But 192.168.71.251 to 192.168.71.254 would be fine then. Also don't forget to set 192.168.71.1 as the gateway and DNS server in case 192.168.71.1 is your routers IP.

Would I have to change the default gateway in my router to 192.168.71.1? It is currently set at 192.168.68.1.

 

[Dunuin]

You need to set the gateway of the Proxmox VE server to your routers IP or it won't be able to go online.

If you got a more complex network with several subnets you should draw a network map so we see how your network looks like.

 

[Kohvou]

You need to set the gateway of the Proxmox VE server to your routers IP or it won't be able to go online.

If you got a more complex network with several subnets you should draw a network map so we see how your network looks like.

My routers Lan IP is 192.168.68.1.

My router is a deco x20 and it is connected via Ethernet to another x20 where my server is connected. But my DCHP has a range from 192.168.68.50 to 192.168.71.250

 

[TheCrowFather]

My routers Lan IP is 192.168.68.1.

My router is a deco x20 and it is connected via Ethernet to another x20 where my server is connected. But my DCHP has a range from 192.168.68.50 to 192.168.71.250

You need to put Proxmox on an IP that is within the range of your DHCP server.

But my DCHP has a range from 192.168.68.50 to 192.168.71.250

Is that a single DHCP server or two different DHCP servers providing different ranges?

 

[Kohvou]

You need to put Proxmox on an IP that is within the range of your DHCP server.


Is that a single DHCP server or two different DHCP servers providing different ranges?

I beleive it is just one DHCP server, the start ip is listed as 192.168.68.50 and the end IP is listed as 192.168.71.250 which I assumed meant one server.

 

[Dunuin]

You need to put Proxmox on an IP that is within the range of your DHCP server.

In range of the subnet but NOT in the DHCP range. Otherwise the DHCP server might assign that IP twice and you run into problems when there are two hosts with the same IP. So static IPs should never be in the DHCP range.

 

[Kohvou]

In range of the subnet but NOT in the DHCP range. Otherwise the DHCP server might assign that IP twice and you run into problems when there are two hosts with the same IP. So static IPs should never be in the DHCP range.

I guess Im a bit confused now

Should I be trying to do something like 192.168.71.254?

 

[Dunuin]

First you should find out what your subnets and subnet ranges are and if your two routers each serve a different subnet or if both use the same subnet and one of the routers is just relaying to the other one. Or even worse, you got two routers in the same subnet and both are working as a primary DHCP server so they could conflict with each other.

Sounded like both routers are sharing a 192.168.68.0/22 subnet.

 

[TheCrowFather]

In range of the subnet but NOT in the DHCP range. Otherwise the DHCP server might assign that IP twice and you run into problems when there are two hosts with the same IP. So static IPs should never be in the DHCP range.

Ehh. That's ish. DHCP is initiated by the client not the server. If the client has a static IP then it's entered into the DHCP server table through ARP. The DHCP server should not then reissue that IP as it's already in use.

DHCP IP reuse only really happens if you have multiple DHCP servers handing out IPs in the same range as they don't sync their lease tables.

Otherwise though the server knows and shouldn't issue that IP

 

[TheCrowFather]

First you should find out what your subnets and subnet ranges are and if your two routers each serve a different subnet or if both use the same subnet and one of the routers is just relaying to the other one. Or even worse, you got two routers in the same subnet and both are working as a primary DHCP server so they could conflict with each other.

Sounded like both routers are sharing a 192.168.68.0/22 subnet.

The deco x20s are a Mesh system so likely it's 1 router and the other one is a satellite node.

It's seems more like OP just has a large Subnet for some reason.

 

[Dunuin]

Ehh. That's ish. DHCP is initiated by the client not the server. If the client has a static IP then it's entered into the DHCP server table through ARP. The DHCP server should not then reissue that IP as it's already in use.

DHCP IP reuse only really happens if you have multiple DHCP servers handing out IPs in the same range as they don't sync their lease tables.

Otherwise though the server knows and shouldn't issue that IP

But there still could be cases where that could be problematic. For example the host with the static IP is offline, the DHCP assigns one client this IP because it is part of the DHCP range and isn't in use right now. Then you start the host with the static IP but the IP is already in use.
And sounds like he is using two routers and isn't really confident how they were setup. Atleast it won't hurt to use a static IP outside of the DHCP range.

 

[Kohvou]

I ended up just using the 192.168.71.254 and I can now access it through the web ui. The help is much appreciated