LXC : Install2026/04/15

Install the container-based virtualization software LXC (Linux Containers).

Because it uses paravirtualization, which shares the host and kernel, other operating systems like Windows cannot be used.

[1]

Install LXC.

root@dlp:~#

apt -y install lxc

[2]	As an example, we will create a Debian Trixie container. Various other OS templates are available besides Debian, which can be viewed at the following URL. ⇒ https://images.linuxcontainers.org/

# create [debian13] container

root@dlp:~#

lxc-create --name debian13 --template download -- --dist debian --release trixie --arch amd64

Downloading the image index
Downloading the rootfs
Downloading the metadata
The image cache is now ready
Unpacking the rootfs

---
You just created a Debian trixie amd64 (20260414_05:24) container.

To enable SSH, run: apt install openssh-server
No default root or user password are set by LXC.

# list containers

root@dlp:~#

lxc-ls

debian13

# display container information

root@dlp:~#

lxc-info -n debian13

Name:           debian13
State:          STOPPED

# start containers as daemons

root@dlp:~#

lxc-start -n debian13 -d

root@dlp:~#

lxc-info -n debian13

Name:           debian13
State:          RUNNING
PID:            864
Link:           vethXj33Q6
 TX bytes:      592 bytes
 RX bytes:      722 bytes
 Total bytes:   1.28 KiB

# Connect to the container

root@dlp:~#

lxc-attach -n debian13

root@debian13:~#     # connected to the container's shell

# to return to the host console, press [Ctrl + d]

root@debian13:~#
exit
root@dlp:~#

# To stop the container, do the following

root@dlp:~#

lxc-stop -n debian13

[3]	Here are some other basic operating instructions.

# container you created is saved in the following location

root@dlp:~#

ll /var/lib/lxc

total 4
drwxrwx--- 3 root root 4096 Apr 15 10:23 debian13

# for example, create a container on [centos10]

root@dlp:~#

lxc-create --name centos10 --template download -- --dist centos --release 10-Stream --arch amd64

root@dlp:~#

lxc-start -n centos10 -d

# run a specific command and display the results on the host console

root@dlp:~#

lxc-attach -n centos10 -- /bin/echo "Welcome to the LXC World!"

Welcome to the LXC World!

# delete a container

root@dlp:~#

lxc-stop -n centos10

root@dlp:~#

lxc-destroy -n centos10

root@dlp:~#

lxc-ls

debian13

# take a snapshot of a container

root@dlp:~#

lxc-snapshot -n debian13

lxc-snapshot: debian13: ../src/lxc/lxccontainer.c: do_lxcapi_snapshot: 4125 Snapshot of directory-backed container requested
lxc-snapshot: debian13: ../src/lxc/lxccontainer.c: do_lxcapi_snapshot: 4126 Making a copy-clone.  If you do want snapshots, then
lxc-snapshot: debian13: ../src/lxc/lxccontainer.c: do_lxcapi_snapshot: 4127 please create overlay clone first, snapshot that
lxc-snapshot: debian13: ../src/lxc/lxccontainer.c: do_lxcapi_snapshot: 4128 and keep the original container pristine

root@dlp:~#

lxc-snapshot -n debian13 --list

snap0 (/var/lib/lxc/debian13/snaps) 2026:04:15 10:40:11

# restore from snapshot

root@dlp:~#

lxc-snapshot -n debian13 -r snap0

[4]	It is also possible to access containers running as daemons via HTTP or SSH.

# bridge network is configured on the host side

root@dlp:~#

ip address show lxcbr0

4: lxcbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 10:66:6a:00:00:00 brd ff:ff:ff:ff:ff:ff
    inet 10.0.3.1/24 brd 10.0.3.255 scope global lxcbr0
       valid_lft forever preferred_lft forever
    inet6 fc42:5009:ba4b:5ab0::1/64 scope global
       valid_lft forever preferred_lft forever
    inet6 fe80::1266:6aff:fe00:0/64 scope link proto kernel_ll
       valid_lft forever preferred_lft forever

# Check the container's IP address

# you can access the container by accessing the displayed IP address via HTTP or SSH

root@dlp:~#

lxc-start -n debian13 -d

root@dlp:~#

lxc-info -n debian13 | grep IP

IP:             10.0.3.204
IP:             fc42:5009:ba4b:5ab0:ccc6:1eff:fe3e:8ec9

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