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Proxmox - Container

Proxmox - Container

LXC

Linux Containers(LXC)
- a virtualization technology that allows to create and run multiple isolated Linux environments on a single host system.
- Automatically save the state.
Proxmox VE uses Linux Containers (LXC) as its underlying container technology.

Download Container Template

Create LXC

Start a Container

Configure SSH Connection

Update NAT

# on proxmox host
# Inbound rule port forwarding
iptables -t nat -A PREROUTING -i wlp7s0 -p tcp --dport 2222 -j DNAT --to-destination 192.168.100.20:22

# outbound rule
iptables -A FORWARD -p tcp -d 192.168.100.20 --dport 22 -j ACCEPT

# confirm
iptables -t nat -L -v -n | grep 192.168.100.20

netfilter-persistent save

Create user in Container

# on Container
adduser conuser

# add user to sudo

usermod conuser -aG sudo

Login on Control machine (Laptop)

ssh -p 2222 conuser@192.168.1.80

Seting up a Web Server

install apache

apt update
apt install -y apache2

Update NAT

# on proxmox host
# Inbound rule port forwarding
iptables -t nat -A PREROUTING -i wlp7s0 -p tcp --dport 2080 -j DNAT --to-destination 192.168.100.20:80

iptables -t nat -L -v -n | grep 192.168.100.20
# 1    52 DNAT       6    --  wlp7s0 *       0.0.0.0/0            0.0.0.0/0            tcp dpt:2080 to:192.168.100.20:80

Test
- http://192.168.1.80:2080/

Create LXC Template

Prepare template container

# ssh on template container
# update pacakges
sudo apt update && sudo apt upgrade -y

# clean outdate packages
sudo apt clean
# remove orphan packages
sudo apt autoremove

# remove ssh host key
sudo rm /etc/ssh/ssh_host_*

# remove the machine id
sudo truncate -s 0 /etc/machine-id

sudo poweroff

Create template

Symbol gets changed

Create a new container from a template

Configure the container for ssh

# on new clone container, reconfigure ssh host
dpkg-reconfigure openssh-server