Технология LXC

• LXC wiki
• debian.org/LXC
• LXC Getting started

root@server:~# apt install bridge-utils

root@server:~# cat /etc/network/interfaces

auto lo
iface lo inet loopback

#auto eth0
#iface eth0 inet static
#        address 192.168.X.10
#        netmask 255.255.255.0
#        gateway 192.168.X.1

auto br0
iface br0 inet static
        address 192.168.X.10
        netmask 255.255.255.0
        gateway 192.168.X.1
        
        bridge_ports eth0

#        bridge_stp off
#        bridge_maxwait 0
#        post-up /sbin/brctl setfd br0 0

• !!! понадобиться включить «неразборчивый режим» в адаптере

root@server:~# init 0

root@server:~# apt install lxc

root@server:~# cat /etc/default/lxc

...
#[ ! -f /etc/default/lxc-net ] || . /etc/default/lxc-net

ИЛИ

root@server:~# cat /etc/default/lxc-net

...
USE_LXC_BRIDGE="false"
...

root@server:~# rm /etc/default/lxc-net

debian# lxc-create -t debian -n www

• Создание и использование новой логической группы томов LVM

debian# ###lxc-create -t debian -n www -B lvm --vgname=vg1 --fssize=4G --fstype=ext4
debian# ###mount /dev/vg1/www /var/lib/lxc/www/rootfs/

ubuntu# lxc-create -t download -n www -- -d ubuntu -r focal -a amd64

ubuntu24# time lxc-create -t ubuntu -n www
  15 минут

root@server:~# cp /etc/ssh/sshd_config /var/lib/lxc/www/rootfs/etc/ssh/sshd_config

root@server:~# ###cp /etc/resolv.conf /var/lib/lxc/www/rootfs/etc/resolv.conf

root@server:~# chroot /var/lib/lxc/www/rootfs /bin/bash

root@server:/# PS1='www:\w# '

www:/# apt purge isc-dhcp-client

www:/# apt install nano vim iputils-ping

www:/# cat /etc/hosts

127.0.0.1       localhost

192.168.X.20    www.corpX.un www

www:/# passwd
... 123

www:/# exit

debian# ###umount /dev/vg1/www

• Проверить наличие пользователей/групп/домашних каталогов в контейнере и произвести соответственное Перемещение учетных записей

root@server:~# cat /var/lib/lxc/www/config

...

lxc.net.0.type = veth
lxc.net.0.link = br0
lxc.net.0.flags = up
lxc.net.0.ipv4.address = 192.168.X.20/24
lxc.net.0.ipv4.gateway = 192.168.X.1

#lxc.start.auto = 1  # now - systemctl enable lxc@www

lxc.cgroup2.cpuset.cpus = 0-0
lxc.cgroup2.cpu.max = 10000 100000  #/sys/fs/cgroup/lxc.payload.www/cpu.max
lxc.cgroup2.memory.max = 512M       
lxc.cgroup2.memory.high = 512M      #/sys/fs/cgroup/lxc.payload.www/memory.high

root@server:~# lxc-ls -f

root@server:~# lxc-start -n www 

root@server:~# lxc-info -n www

root@server:~# lxc-attach -n www -- ps ax
  или
root@server:~# ps -eo pid,cmd,lxc | grep www

root@server:~# lxc-attach -n www -- /bin/bash

root@server:~# ssh 192.168.X.20

root@server:~# lxc-stop -n www

root@server:~# systemctl start lxc@www

root@server:~# systemctl stop lxc@www

root@server:~# systemctl enable lxc@www --now