learning_lxc_container

importan command in lxc container

command

image Which lxc launch Wich lxd stop Dpkg -i |grep lxd delete Systemctl status lxd list Lxd init [btfs,dir,lvm] exec Lxc version

Lxc --help |less

Lxc help storage

create edit delete get set info list show

Lxc storage list

How to show repository lxc

Lxc remote list

Show to show image my system Lxc image list

Lxc image list images:cent |less

Lxc launch ubuntu:18.04 ubuntu

How to remove start and stop container

Lxc list

Lxc delete container name

Lxc stop myubuntu

Lxc delete --force containername

Lxc move myubuntu myvm

===== error

Lxc stop myubuntu

Lxc move myubuntu myvm

Lxc start myvm

How to connect to container Lxc exec my vm

You access other container why?but just to bridge

Lxc info myvm |less

Pstree -p pid

Show information config container for example cpu and memory limitation

Lxc config show myvm |less

profile

Lxc profile list

Lxc profile show default

Lxc profile copy default custom

Lxc profile list

Lxc profile edit custome

Lxc launch ubuntu:18.04 myvm --profile custom

Lxc exec myvm bash

Lxc config set myvm limit.memory 512MB

Lxc config show myvm |less

Lxc config set myvm limit.cpu 1

Lxc delete --force myvm

How to add and get file in container

echo hello there > myfile

Lxc file push myfile myvm:/root

-----> for send file to container

Lxc file pull myvm/root/myfile .

------->for get or download container to my local server

How to snapshot

You run for in myvm for create 5 directory

For i in $(seq 5);do mkdir $i;done

Lxc snapshot myvm snap1

Lxc image list

And remove directory in vm for test restore snapshot

Lxc help snapshot

Lxc help restore |less

Lxc restore myvm snap1

Lxc exec myvm bash

Note :how add lxc container nested

Make configuration

Lxc stop myvm

Lxc config set myvm limits.memory 512MB

Lxc config set myvm limits.cpu 1

Lxc config set myvm security.privileged true

Lxc config set myvm security.nesting true

Lxc profile edit custom

   Config:
         Limits.memory: 512MB
         Limits.cpu: 1

how to run apache2 fin lx container

Apache Web Server with LXDPermalink

This section will create a container, install the Apache web server, and add ## the appropriate iptables rules in order to expose post 80.

1. Launch a new container:

lxc launch ubuntu:18.04 web

2. Update the package list in the container.

lxc exec web -- apt update

3. Install the Apache in the LXD container.

lxc exec web -- apt install apache2

4. Get a shell in the LXD container.

lxc exec web -- sudo --user ubuntu --login

5. Edit the default web page for Apache to make a reference that it runs inside a LXD container.

sudo nano /var/www/html/index.html

Change the line It works! (line number 224) to It works inside a LXD container!. Then, save and exit.

6. Exit back to the host. We have made all the necessary changes to the container.

exit

7. Add a LXD proxy device to redirect connections from the internet to port 80 (HTTP) on the server to port 80 at this container.

sudo lxc config device add web myport80 proxy listen=tcp:0.0.0.0:80 connect=tcp:127.0.0.1:80

Note
In recent versions of LXD, you need to specify an IP address (such as 127.0.0.1) instead of a hostname (such as localhost). If your container already has a proxy device that uses hostnames, you can edit the container configuration to replace with IP addresses by running lxc config edit web.
Information for configuration container

8. From your local computer, navigate to your Linode’s public IP address in a web browser. You should see the default Apache page:

how to update and upgrade container

lxc exec mycontainer -- apt update lxc exec mycontainer -- apt upgrade

Open a shell session within mycontainer:

lxc exec mycontainer -- sudo --login --user ubuntu

how to show log

View the container logs:

lxc info mycontainer --show-log

https://linuxcontainers.org/lxc/manpages/man5/lxc.container.conf.5.html https://www.kernel.org/doc/Documentation/cgroup-v1/cpusets.txt