Hello, I have a real problem for which I cannot find any solution. I would like to point out that I am a novice and that this is the first time that I have dealt with the concepts of LXC containers with proxmox.
I specify that my container has an Ubuntu 22.0.4 template and that the major problem is that I cannot ping any address, not even that of my gateway. My proxmox host was created and installed with virtualbox using a bridge network, with promiscuity in all. This installation went well on the console of my proxmox I can ping 8.8.8.8 and therefore go out on the wlan, ping my local machine, ping my gateway and even ping my container (the network interface is in enp0s3)
Regarding my container the interface is in eth0 it is in bridge vmbr0 and I reassure you the IP addresses are not duplicates and are on the same network range, that of my container is 192.168.1.14/24 and that of my proxmox x.x.x.13/24. I checked all the configurations as I will show you on my screens, I do not know how to copy text from a container console but the screens are complete.
The configurations are good, and I even went so far as to fill in the ubuntu .yaml file, which is actually a horror to do because you have to respect all the indentation and whitespace rules to be able to netplan apply the configuration. And you can imagine that it is well taken into account because while doing my tests I decided to modify my IP address in the .yaml file, then by trying again for the 1000th time to ping my gateway, it worked. made from the IP that I had configured on the .yaml file which means that everything else should also be taken into account, but no.
I really tried everything as far as possible, modified the iptables rules, checked the statuses of the interfaces, checked the iptables tables and their potential restrictions, and the result is that everything is compliant in my opinion. Of course I didn't go into the tests as much as possible because I hadn't accessed the commands that require an apt update as you imagine. I don't understand where the error comes from. I will now post the screens starting from VirtualBox at the proxmox host and its configuration up to that of the container, ending with the system logs.
Sorry I don't know how to copy the texts directly onto a proxmox container so I had to take screns please don't hesitate to open them for a few seconds wasted in order to understand everything about the subject, thank you in advance.
I would really like you to find a solution for me please, it's been more than 30 hours of work that I'm stuck on this point trying everything, delete it all again since the installation of the proxmox, try on another container which 'elsewhere cannot ping the first container supposed to be in the same node. I also changed template to try on Ubuntu: same result.
Here is the list of screens
virtualbox network configuration :
https://i.imgur.com/14La3or.png
Configuring Host Proxmox :
https://i.imgur.com/fBtUqtT.png
Container network summary interface :
https://i.imgur.com/Ub5KWsd.png
Ip route container :
https://i.imgur.com/XngWsRe.png
Ip a container :
https://i.imgur.com/hkkPDq0.png
Container DNS:
https://i.imgur.com/fnlIDUq.png
iptables container :
https://i.imgur.com/duaYuG6.png
Container iptables configuration:
https://i.imgur.com/37HrDZD.png
Ipshow eth0 :
https://i.imgur.com/CRSrxTD.png
Netplan configuration
https://i.imgur.com/DM0YD5X.png
Ipv4 forward :
https://i.imgur.com/1dk9VNK.png
Confirmation Ipv4forward configuration:
https://i.imgur.com/RGfPlCE.png
Ping attempt after all these checks and changes:
https://i.imgur.com/lSGCYT8.png
Container networkd service status
https://i.imgur.com/doznZ52.png
Container network logs:
https://i.imgur.com/Eqd0o5X.png
Here I hope that you will have an overall vision of what is happening within my network, and that you will be able to enlighten me and find me a solution, if I forgot to specify it the firewalls were deactivated by precaution but perhaps it is possible to push more, honestly I don't know anymore I have no more food for thought and I am counting on your help to unblock me. Thanks and my best regards to all you who are reading or trying to help me, I need to finish this théorical homework for next week and it's just the beginning of it and i'm stuck for no reason (at my point of view).
I specify that my container has an Ubuntu 22.0.4 template and that the major problem is that I cannot ping any address, not even that of my gateway. My proxmox host was created and installed with virtualbox using a bridge network, with promiscuity in all. This installation went well on the console of my proxmox I can ping 8.8.8.8 and therefore go out on the wlan, ping my local machine, ping my gateway and even ping my container (the network interface is in enp0s3)
Regarding my container the interface is in eth0 it is in bridge vmbr0 and I reassure you the IP addresses are not duplicates and are on the same network range, that of my container is 192.168.1.14/24 and that of my proxmox x.x.x.13/24. I checked all the configurations as I will show you on my screens, I do not know how to copy text from a container console but the screens are complete.
The configurations are good, and I even went so far as to fill in the ubuntu .yaml file, which is actually a horror to do because you have to respect all the indentation and whitespace rules to be able to netplan apply the configuration. And you can imagine that it is well taken into account because while doing my tests I decided to modify my IP address in the .yaml file, then by trying again for the 1000th time to ping my gateway, it worked. made from the IP that I had configured on the .yaml file which means that everything else should also be taken into account, but no.
I really tried everything as far as possible, modified the iptables rules, checked the statuses of the interfaces, checked the iptables tables and their potential restrictions, and the result is that everything is compliant in my opinion. Of course I didn't go into the tests as much as possible because I hadn't accessed the commands that require an apt update as you imagine. I don't understand where the error comes from. I will now post the screens starting from VirtualBox at the proxmox host and its configuration up to that of the container, ending with the system logs.
Sorry I don't know how to copy the texts directly onto a proxmox container so I had to take screns please don't hesitate to open them for a few seconds wasted in order to understand everything about the subject, thank you in advance.
I would really like you to find a solution for me please, it's been more than 30 hours of work that I'm stuck on this point trying everything, delete it all again since the installation of the proxmox, try on another container which 'elsewhere cannot ping the first container supposed to be in the same node. I also changed template to try on Ubuntu: same result.
Here is the list of screens
virtualbox network configuration :
https://i.imgur.com/14La3or.png
Configuring Host Proxmox :
https://i.imgur.com/fBtUqtT.png
Container network summary interface :
https://i.imgur.com/Ub5KWsd.png
Ip route container :
https://i.imgur.com/XngWsRe.png
Ip a container :
https://i.imgur.com/hkkPDq0.png
Container DNS:
https://i.imgur.com/fnlIDUq.png
iptables container :
https://i.imgur.com/duaYuG6.png
Container iptables configuration:
https://i.imgur.com/37HrDZD.png
Ipshow eth0 :
https://i.imgur.com/CRSrxTD.png
Netplan configuration
https://i.imgur.com/DM0YD5X.png
Ipv4 forward :
https://i.imgur.com/1dk9VNK.png
Confirmation Ipv4forward configuration:
https://i.imgur.com/RGfPlCE.png
Ping attempt after all these checks and changes:
https://i.imgur.com/lSGCYT8.png
Container networkd service status
https://i.imgur.com/doznZ52.png
Container network logs:
https://i.imgur.com/Eqd0o5X.png
Here I hope that you will have an overall vision of what is happening within my network, and that you will be able to enlighten me and find me a solution, if I forgot to specify it the firewalls were deactivated by precaution but perhaps it is possible to push more, honestly I don't know anymore I have no more food for thought and I am counting on your help to unblock me. Thanks and my best regards to all you who are reading or trying to help me, I need to finish this théorical homework for next week and it's just the beginning of it and i'm stuck for no reason (at my point of view).
