Container management with LXC
Program Management and Updates
Using the container console, update the installed packages in the usual way with apt-get update followed by apt-get upgrade. By using the package manager, you can install additional software packages from the listed sources. To access a wider program selection, add the desired repositories to the /etc/apt/sources.list file in the container (Listing 4). You do not need to start the updates from within the running container: You can also do this with lxc-attach from the host [3].
Listing 4
Adding Repositories
Preferably, you should run the updates in one fell swoop on the host system. In Listing 5, the shell script updates the host, terminates all active containers, and then restarts them individually for updating. The -qq switch that follows apt-get suppresses all output – use it only after a successful test run. The same applies for -y ("yes"), which waives all commands without prompting. The lxc-wait command in the update loop ensures that the container is ready for operation.
Listing 5
Updating Host System
Future
In the Debian Administrator's Handbook [4] you will find some valuable information on using LXC with Debian and Debian-based distributions. Additionally, you can find detailed information about the network configuration for containers online [5], as well on display redirection for GUI applications [6].
Infos
- LXC: https://linuxcontainers.org
- LXC in the Debian wiki: https://wiki.debian.org/LXC
- Software updates for containers: http://www.cyberciti.biz/faq/how-to-update-debian-or-ubuntu-linux-containers-lxc
- Debian handbook: https://debian-handbook.info/browse/en-US/stable/sect.virtualization.html#sect.lxc
- Network setup with LXC: http://unix.stackexchange.com/questions/50201/how-to-configure-external-ip-addresses-for-lxc-guests
- Display redirection for GUI applications: https://newspaint.wordpress.com/2015/09/14/how-do-i-get-x11-applications-running-in-a-lxc-container/
« Previous 1 2
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
US / Canada
UK / Australia
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
TUXEDO Computers Unveils Linux Laptop Featuring AMD Ryzen CPU
This latest release is the first laptop to include the new CPU from Ryzen and Linux preinstalled.
-
XZ Gets the All-Clear
The back door xz vulnerability has been officially reverted for Fedora 40 and versions 38 and 39 were never affected.
-
Canonical Collaborates with Qualcomm on New Venture
This new joint effort is geared toward bringing Ubuntu and Ubuntu Core to Qualcomm-powered devices.
-
Kodi 21.0 Open-Source Entertainment Hub Released
After a year of development, the award-winning Kodi cross-platform, media center software is now available with many new additions and improvements.
-
Linux Usage Increases in Two Key Areas
If market share is your thing, you'll be happy to know that Linux is on the rise in two areas that, if they keep climbing, could have serious meaning for Linux's future.
-
Vulnerability Discovered in xz Libraries
An urgent alert for Fedora 40 has been posted and users should pay attention.
-
Canonical Bumps LTS Support to 12 years
If you're worried that your Ubuntu LTS release won't be supported long enough to last, Canonical has a surprise for you in the form of 12 years of security coverage.
-
Fedora 40 Beta Released Soon
With the official release of Fedora 40 coming in April, it's almost time to download the beta and see what's new.
-
New Pentesting Distribution to Compete with Kali Linux
SnoopGod is now available for your testing needs
-
Juno Computers Launches Another Linux Laptop
If you're looking for a powerhouse laptop that runs Ubuntu, the Juno Computers Neptune 17 v6 should be on your radar.