Blog posts written by Mathieu Trudel-Lapierre

Mathieu Trudel-Lapierre
11 August 2017

How to sign things for Secure Boot

Desktop Article

Secure Boot signing The whole concept of Secure Boot requires that there exists a trust chain, from the very first thing loaded by the hardware (the firmware code), all the way through to the last things loaded by the operating system as part of the kernel: the modules. In other words, not just the firmware ...

Mathieu Trudel-Lapierre
25 July 2017

ss: another way to get socket statistics

Cloud and server Article

In an earlier blog post I mentioned ss, another tool that comes with the iproute2 package and allows you to query statistics about sockets. The same thing that can be done with netstat, with the added benefit that it is typically a little bit faster, and shorter to type. Just ss by default will display much the same thing as netstat, ...

Mathieu Trudel-Lapierre
10 July 2017

Netplan by default in 17.10

Ubuntu Article

Recently, I uploaded an updated nplan package (version 0.24) to change its Priority: field to important, as well as an update of ubuntu-meta (following a seeds update), to replace ifupdown with nplan in the minimal seed. What this means concretely is that nplan should now be installed by default on all images, part of ubuntu-minimal, ...

Mathieu Trudel-Lapierre
7 July 2017

If you’re still using ifconfig, you’re living in the past

Cloud and server Article

The world evolves I regularly see “recommendations” to use ifconfig to get interface information in mailing list posts or bug reports and other places. I might even be guilty of it myself. Still, the world of networking has evolved quite a lot since ifconfig was the de-facto standard to bring up a device, check its ...

Mathieu Trudel-Lapierre
5 July 2017

Quick and easy network configuration with Netplan

Cloud and server Article

Earlier this week I uploaded netplan 0.21 in artful, with SRUs in progress for the stable releases. There are still lots of features coming up, but it’s also already quite useful. You can already use it to describe typical network configurations on desktop and servers, all the way to interesting, complicated setups like bond over ...