[GIVEN UP]My teacher broke my debian server, 2 days before hand in date, can someone help me? | Arch Linux Community | Page 1

amber oak May 16, 2023, 3:50 PM

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So right before the hand in date of my big debian server task, that is like 50% of my grade, my teacher wanted to have a look at my server, which I allowed him to. He said that he was fixing some miner bugs he had spotted earlier, which I was fine with. And in the end, after toying around with bind9(named), the ens33(my 1st network card) doesn't have any connection to the outside world when it is configured in dhcp. How could I fix this, since I really can't hand him a completly borked (connection wise) server
🙏

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I have tried to give it a static ip adress, but to no avail

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So I have 2 network cards right

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ens 33 and 36

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33 is meant to connect to the outside wolr

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world

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while 36 is meant to be a lan seggment in vmware

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on which I would put other virtual machines, to then get them to get dhcp and dns trough my ens33

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if someone could help, I would be extremly gratefull

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when starting my server this is the error I get

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I have also tried to set my ens33 card to bridged and NAT, both didn't work

hazy cloak May 16, 2023, 3:59 PM

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lmao isnt that his fault?
i know this isnt the solution you want, but the easiest way to fix it 2 days before hand in date would be to back up everything relevant and then reinstall the server

amber oak May 16, 2023, 4:00 PM

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ajajaja

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thank you

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i'il do that

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but I hoped I could get it fixed, but thanks anyways

hazy cloak May 16, 2023, 4:12 PM

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you could probably fix it but idk if you will be able to find the issue in time

amber oak May 16, 2023, 4:31 PM

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fair enough, but do you have a direction I could starting looking into?

hazy cloak May 16, 2023, 4:31 PM

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https://unix.stackexchange.com/questions/206217/no-ip-address-on-vmware-running-centos-7

Unix & Linux Stack Exchange

No IP address on VMware running centos 7

I just now installed Cent OS 7 on my VMware 8 and I am not able to connect it to a network.

I checked the VM network and its mapped to the physical NIC. The same setting work like charm on my Cen...

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is where i would start

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google things related to ens33, vmware, and dhcp

lyric tiger May 16, 2023, 5:10 PM

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amber oak I have tried to give it a static ip adress, but to no avail

the internal card works right?

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try running dhclient manually?

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dhclient <interface_name>

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I think that is the syntax

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hopefully a dhcp server is running somewhere to which you're connecting...

amber oak May 16, 2023, 5:12 PM

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dhclient isn't a tool I have install

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sadly

amber oak May 16, 2023, 5:13 PM

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hazy cloak https://unix.stackexchange.com/questions/206217/no-ip-address-on-vmware-running-...

thank you, i'il try looking more into it

wooden brookBOT May 16, 2023, 5:13 PM

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reaI received a thank you cookie!

lyric tiger May 16, 2023, 5:14 PM

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the internal stuff is working right?

amber oak May 16, 2023, 5:14 PM

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I can't test if ens36 is working

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or atleast I don't know how to

lyric tiger May 16, 2023, 5:14 PM

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just using ping and stuff

amber oak May 16, 2023, 5:14 PM

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but it is running on a lan segment I created myself

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so it is logicall it can't connect

lyric tiger May 16, 2023, 5:14 PM

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see if ips are allotted

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you can ping outside and inside

amber oak May 16, 2023, 5:15 PM

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I can't

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lyric tiger May 16, 2023, 5:15 PM

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amber oak I can't

go inside the vm

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or do you have nmap installed?

amber oak May 16, 2023, 5:16 PM

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no

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rip

lyric tiger May 16, 2023, 5:17 PM

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well under extreme conditions you can download the pkg file(.deb on debian) to your pc and transfer it to the server... and install it there...

lyric tiger May 16, 2023, 5:17 PM

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lyric tiger go inside the vm

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ping the host (172.19.0.1) from inside the vm
ping the vm (find out ip from inside) from the host?

amber oak May 16, 2023, 5:17 PM

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your last one shouldn't work

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and doesn't work

lyric tiger May 16, 2023, 5:18 PM

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amber oak

yeah but this is from the host to the host?

amber oak May 16, 2023, 5:18 PM

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since you can only ping that ip if you are connected to the lan seggmen

amber oak May 16, 2023, 5:18 PM

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lyric tiger yeah but this is from the host to the host?

maybe i misphrased somewhere, but there is only 1 vm

lyric tiger May 16, 2023, 5:18 PM

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Ohhh. I server=vm?

amber oak May 16, 2023, 5:18 PM

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amber oak May 16, 2023, 5:18 PM

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lyric tiger Ohhh. I server=vm?

yea

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the server needs to be in a vm

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so we can deliver it to the teacher

lyric tiger May 16, 2023, 5:19 PM

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and the vm is connected to what?

amber oak May 16, 2023, 5:19 PM

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the vm itself is running on my host machine

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which is connected via an ethernet cable

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that clearly works

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(I am here)

lyric tiger May 16, 2023, 5:19 PM

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amber oak

this is libvirtd?

amber oak May 16, 2023, 5:19 PM

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no

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we NEED

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to use vmware

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since most of the class is just windows users

lyric tiger May 16, 2023, 5:20 PM

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classic brainrot smh

amber oak May 16, 2023, 5:20 PM

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and he wants uniformity when testing our servers

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so he doesn't need to spin up multiply programs

amber oak May 16, 2023, 5:20 PM

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lyric tiger classic brainrot smh

agree

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i'il get a diagram

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brb

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lyric tiger May 16, 2023, 5:21 PM

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ok so go to your host and ping that 172 thing?

amber oak May 16, 2023, 5:21 PM

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translation

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Your computer with vmware

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internet connection

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server

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and line B is the secondary network that we create (ens36, with the lan seggmen)

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and on our segment that we create we need to add a client (easy)

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and due to our (hopefully) correct configuration the client should have a dhcp connection trough ens36, that is on our lan segment LANconnectie

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but the problem is

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that I don't have a internet connection with vmware

lyric tiger May 16, 2023, 5:22 PM

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amber oak and on our segment that we create we need to add a client (easy)

what is that client? another vm?

amber oak May 16, 2023, 5:22 PM

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yea

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for example (his example)

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a windows 10 virtual machine

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that just has 1 network card

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that is set on the lan segment

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so in total there should be 2 vm's

amber oak May 16, 2023, 5:23 PM

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lyric tiger ok so go to your host and ping that 172 thing?

that won't work, since that only works if

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one of you network adapters (inside vmware) is set in the lan segment

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which is configured via ens36

lyric tiger May 16, 2023, 5:24 PM

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amber oak yea

so that should work even without an internet connection (ens33 I believe)

amber oak May 16, 2023, 5:24 PM

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yea

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the dhcp server(on the 'server')

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still servers ip's

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they just can't connect to the internet

lyric tiger May 16, 2023, 5:24 PM

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so host <-> server (ens33) is bridged networking
server <-> client (ens36) is the lan segment?

amber oak May 16, 2023, 5:24 PM

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yes

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server has 2 network cards

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ens33 for the outside world

lyric tiger May 16, 2023, 5:25 PM

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imo. both should work independently. I'd suggest going about it one by one.

amber oak May 16, 2023, 5:25 PM

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and ens36 that is for other clients to connect to only

amber oak May 16, 2023, 5:25 PM

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lyric tiger imo. both should work independently. I'd suggest going about it one by one.

fair.

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but atm, ens36 is working as it should be

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but ens33 doesn't get an ip adress

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to connect to the real internet

lyric tiger May 16, 2023, 5:25 PM

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do you have to use bridged for ens33?

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nat is usually painless

amber oak May 16, 2023, 5:26 PM

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I have tried both

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and they both don't work

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but i'il change it to nat real quick

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and show

lyric tiger May 16, 2023, 5:27 PM

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btw how do you connect your host computer to the ethernet?

amber oak May 16, 2023, 5:27 PM

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just via an ethernet cable

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that plugs into the wall

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that clearly works

lyric tiger May 16, 2023, 5:27 PM

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I mean what's the connnecting software

amber oak May 16, 2023, 5:27 PM

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since I am here chatting on my host

lyric tiger May 16, 2023, 5:28 PM

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NetworkManager?

amber oak May 16, 2023, 5:28 PM

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networkmanager

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yea

lyric tiger May 16, 2023, 5:28 PM

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cuz in bridged both are vm and host are exactly equivalent

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why don't you use network manager on you server-vm then?

amber oak May 16, 2023, 5:28 PM

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I would

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but debian has something already

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I really don't know

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it enough

lyric tiger May 16, 2023, 5:29 PM

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okay leave it for now

amber oak May 16, 2023, 5:29 PM

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for everyone in my class it isn't borked

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the only thing I think maybe is borked

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is my /etc/resolv.conf

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that I know

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(this is ens33 configured to try dhcp)

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and the first card trying to use nat

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oh this is 100% fucked

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(pdc/pdc.local)

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is the domain that my school servers us up

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and where I was working on before coming home

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do you know how to configure /etc/resolv.conf?

lyric tiger May 16, 2023, 5:30 PM

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amber oak

why is ens33 down?

amber oak May 16, 2023, 5:31 PM

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lyric tiger why is ens33 down?

that is the whole question

lyric tiger May 16, 2023, 5:31 PM

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ip dev ens33 set up

amber oak May 16, 2023, 5:31 PM

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lyric tiger May 16, 2023, 5:31 PM

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*dev -> link

amber oak May 16, 2023, 5:32 PM

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lyric tiger May 16, 2023, 5:32 PM

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ip link set dev ens33 up

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😅 been a long time

amber oak May 16, 2023, 5:32 PM

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no worry

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haha

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it didn't give an error

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but just didn't do anything

lyric tiger May 16, 2023, 5:32 PM

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yeah now it's up

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you now need something like dhclient to run dhclient to get an ip from the dhcp servers your school lan has...

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this is still bridged right?

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or did you switch to nat?

amber oak May 16, 2023, 5:34 PM

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nat

lyric tiger May 16, 2023, 5:34 PM

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oh then I think you can just assign an ip and it should work

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goto host

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do ifconfig

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see what's the nat interface and ip subnet

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and add an ip

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using ip addr

amber oak May 16, 2023, 5:35 PM

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IPv4; 192.168.83.1
Subnet; 255.255.255.0

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(host)

lyric tiger May 16, 2023, 5:36 PM

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there should be 2 right?

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one is ethernet the other is nat?

amber oak May 16, 2023, 5:36 PM

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on my host?

lyric tiger May 16, 2023, 5:36 PM

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yeah

amber oak May 16, 2023, 5:36 PM

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it only has 1 network connection

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that is via ethernet

lyric tiger May 16, 2023, 5:36 PM

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then nat isn't getting created.

amber oak May 16, 2023, 5:36 PM

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and the ethernet has nat applied to it

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(I think!!!)

lyric tiger May 16, 2023, 5:37 PM

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oof no nat is like

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wam

amber oak May 16, 2023, 5:37 PM

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damn...

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thank you very very much for your help

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but I think i'il just start over

amber oak May 16, 2023, 5:37 PM

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lyric tiger wam

Super thanks for devoting your time to thi

wooden brookBOT May 16, 2023, 5:37 PM

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solvargi received a thank you cookie!

amber oak May 16, 2023, 5:37 PM

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and helping me

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but i'il just start from scratch, fresh vm

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thank you

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😄

lyric tiger May 16, 2023, 5:38 PM

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okay. you can check what your prof did with history

amber oak May 16, 2023, 5:38 PM

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he just configured stuff in my dns server

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bind9

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which Is weard

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weird

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because when I DISABLE THE SERVICE

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it still doesn't work

lyric tiger May 16, 2023, 5:39 PM

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nat is something like a virtual interface vms can tap into.
it's created like this:

amber oak May 16, 2023, 5:39 PM

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can it still be resolv.conf?

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lyric tiger May 16, 2023, 5:39 PM

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yeah

amber oak May 16, 2023, 5:39 PM

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I should probs remove the first two lines?

lyric tiger May 16, 2023, 5:39 PM

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idk

amber oak May 16, 2023, 5:39 PM

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that is a domain that isn't even here

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that is my school

lyric tiger May 16, 2023, 5:40 PM

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yeah do that lol

hot blaze May 16, 2023, 5:40 PM

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How'd your teacher broke your server

lyric tiger May 16, 2023, 5:40 PM

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comment them out

amber oak May 16, 2023, 5:40 PM

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I really don't know

hot blaze May 16, 2023, 5:40 PM

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Damn

lyric tiger May 16, 2023, 5:40 PM

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are you connected to the ethernet now?

amber oak May 16, 2023, 5:40 PM

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(host?)

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yes

hot blaze May 16, 2023, 5:40 PM

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Teacher only ever used windows server before

amber oak May 16, 2023, 5:40 PM

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hot blaze Damn

I even mailed him asking for help

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so maybe he can help 🙏

lyric tiger May 16, 2023, 5:41 PM

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amber oak but I think i'il just start over

I think you're close.

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virt-manager has a connection pane where you have to start the nat iface

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maybe that's the case?

amber oak May 16, 2023, 5:41 PM

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I am using vmware

lyric tiger May 16, 2023, 5:41 PM

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because if nat is running it should show up in ifconfig

lyric tiger May 16, 2023, 5:42 PM

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lyric tiger nat is something like a virtual interface vms can tap into. it's created like th...

like so.

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https://kb.vmware.com/s/article/1018697

amber oak May 16, 2023, 5:42 PM

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hot blaze May 16, 2023, 5:42 PM

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What does your server host?

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or do

amber oak May 16, 2023, 5:42 PM

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webserver

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dns

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dhcp

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file server

hot blaze May 16, 2023, 5:42 PM

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Exact same thing I do then

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Except dhcp

amber oak May 16, 2023, 5:43 PM

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that was the simplest part

hot blaze May 16, 2023, 5:43 PM

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Okay uhhhh

lyric tiger May 16, 2023, 5:43 PM

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amber oak

yeah so can you see 192.168.189.0 from your host?

amber oak May 16, 2023, 5:44 PM

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can I ping it?

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no

lyric tiger May 16, 2023, 5:44 PM

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try pinging 192.168.189.1

amber oak May 16, 2023, 5:45 PM

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it replys

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so my host can see it

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and even ping it

lyric tiger May 16, 2023, 5:45 PM

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that is most probably your own host 😐

amber oak May 16, 2023, 5:45 PM

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the host has

lyric tiger May 16, 2023, 5:45 PM

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post the entire output of ip a?

amber oak May 16, 2023, 5:46 PM

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host?

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or nah

lyric tiger May 16, 2023, 5:46 PM

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yes from the host

amber oak May 16, 2023, 5:46 PM

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(I am only windows though) I know I know

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this is my 'school' partitiohn

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since I also need to code in c#

lyric tiger May 16, 2023, 5:46 PM

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that's okay

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ipconfig on windows

amber oak May 16, 2023, 5:47 PM

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(still use linux for everthing else)

lyric tiger May 16, 2023, 5:49 PM

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post your /etc/network/interfaces?

amber oak May 16, 2023, 5:49 PM

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i'l brb (need to go to the toilet)

lyric tiger May 16, 2023, 5:58 PM

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try
ip addr add 192.168.189.2/24 dev enp33

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and try pinging the host(192.168.189.1).

amber oak May 16, 2023, 6:01 PM

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lyric tiger May 16, 2023, 6:04 PM

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add before that

lyric tiger May 16, 2023, 6:04 PM

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lyric tiger try `ip addr add 192.168.189.2/24 dev enp33`

.

amber oak May 16, 2023, 6:05 PM

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ping: connect: network is unreachable

lyric tiger May 16, 2023, 6:05 PM

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amber oak

Actually set that to .3

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.2 is the default gateway on nat.

lyric tiger May 16, 2023, 6:06 PM

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amber oak

You can check that in network editor

amber oak May 16, 2023, 6:06 PM

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i'il try right away

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lyric tiger May 16, 2023, 6:07 PM

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ip route add default via <insert gateway IP> dev enp33

amber oak May 16, 2023, 6:08 PM

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not to sound super stupid

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but how can i obtain that ip?

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is that just

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192.168.189.1 ?

lyric tiger May 16, 2023, 6:09 PM

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amber oak

It's .2 i think
But goto Vmnet 8 and check in nat settings?

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Send screenshot of when you click vmnet8?

amber oak May 16, 2023, 6:09 PM

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it is .2

lyric tiger May 16, 2023, 6:10 PM

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Okay set that.

amber oak May 16, 2023, 6:10 PM

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lyric tiger May 16, 2023, 6:10 PM

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amber oak

What's inside DHCP settings?

amber oak May 16, 2023, 6:11 PM

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(these are all default btw)

lyric tiger May 16, 2023, 6:11 PM

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Ummmm,
ip route add <gateway IP> dev <interface on which it should be reachable>
Then the above command?

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Can you ping the gateway from the host?

amber oak May 16, 2023, 6:12 PM

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amber oak May 16, 2023, 6:12 PM

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lyric tiger Ummmm, ip route add <gateway IP> dev <interface on which it should be reachable>...

lyric tiger May 16, 2023, 6:13 PM

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Okay idk now. Oof.

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That's all I know.

amber oak May 16, 2023, 6:13 PM

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lyric tiger Okay idk now. Oof.

SUPER SUPER THANKS YOU

wooden brookBOT May 16, 2023, 6:13 PM

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solvargi received a thank you cookie!

amber oak May 16, 2023, 6:13 PM

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thanks for trying to help me

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but i'il just try to port everything to a new vm

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much thanks for you time and dedication

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you are my hero of the day

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much appreciation for you,

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and altough 'we'(you! 🙂 ) didn't succeed, you really taught me a lot

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and thank you for your patience with me

lyric tiger May 16, 2023, 6:15 PM

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Lesson of the day don't give your pc to professors. Or atleast keep a snapshot of the working state.
LoL

amber oak May 16, 2023, 6:15 PM

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indeed

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👍

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[GIVEN UP]My teacher broke my debian server, 2 days before hand in date, can someone help me?

hot blaze May 16, 2023, 10:38 PM

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That's a new tag

#[GIVEN UP]My teacher broke my debian server, 2 days before hand in date, can someone help me?