[SOLVED] CT is not getting connected to the Internet.

[Venkat teja Ravi]

I am new to proxmox. I have created a CT having Ubuntu 18.04 template. The problem is it is not getting connected to the internet.

$ ping 8.8.8.8
connect: Network is unreachable

$ cat /etc/network/interfaces
# ifupdown has been replaced by netplan(5) on this system.  See
# /etc/netplan for current configuration.
# To re-enable ifupdown on this system, you can run:
#    sudo apt install ifupdown

$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0@if26: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether f2:15:10:e9:c3:83 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::f015:10ff:fee9:c383/64 scope link 
       valid_lft forever preferred_lft forever

$ /etc/resolv.conf
# --- BEGIN PVE ---
search infra.vitwit.com
nameserver 8.8.8.8
# --- END PVE ---

Thanks in advance.

 

[Moayad]

2: eth0@if26: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether f2:15:10:e9:c3:83 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet6 fe80::f015:10ff:fee9:c383/64 scope link valid_lft forever preferred_lft forever

you don't set a static IP to the container, right?

Please post the network configuration cat /etc/network/interfaces of Proxmox VE and the config of that container pct config <CTID>

 

[Venkat teja Ravi]

you don't set a static IP to the container, right?

Please post the network configuration cat /etc/network/interfaces of Proxmox VE and the config of that container pct config <CTID>

Sure @Moyad,

$  cat /etc/network/interfaces
auto lo
iface lo inet loopback

iface eno145 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.10.2
        gateway 192.168.10.1
        bridge_ports eno145
        bridge_stp off
        bridge_fd 0

iface eno146 inet manual

iface eno3 inet manual

iface eno4 inet manual

### Config of the container 100
$ pct config 100
arch: amd64
cores: 2
hostname: ubuntu18.04
memory: 8096
net0: name=eth0,bridge=vmbr0,hwaddr=F2:15:10:E9:C3:83,ip=dhcp,ip6=dhcp,type=veth
ostype: ubuntu
rootfs: local-lvm:vm-100-disk-0,size=100G
swap: 8096
unprivileged: 1

Best Regards,
Teja,
SDE I at Vitwit

 

[Moayad]

Can you do dhclient command inside the container and see if does it give you an IP address?

 

[Venkat teja Ravi]

Can you do dhclient command inside the container and see if does it give you an IP address?

It is showing Blank.

root@ubuntu18:~# dhclient

 

[Moayad]

are you got IP after that command?

and can you ping e.g. 8.8.8.8?

 

[Venkat teja Ravi]

Thanks, Moyad for helping. It is working fine now.
Solution:
I have changed the IPv4 from DHCP to static. In the network section of VM.
Updated config of VM:

arch: amd64
cores: 2
hostname: ubuntu18.04
memory: 8096
net0: name=eth0,bridge=vmbr0,gw=192.xxx.xx.1,hwaddr=F2:15:10:E9:C3:83,ip=192.xxx.xx.9/24,type=veth
ostype: ubuntu
rootfs: local-lvm:vm-100-disk-0,size=100G
swap: 8096
unprivileged: 1