systemd

3️⃣0️⃣ Here's the 30th post highlighting key new features of the recently published v262 release of systemd. #systemd262 #systemd

Whenever a TPM chip is manufactured by the vendor it's supposed to be provisioned with a signed certificate ("EKcert") that is supposed to prove it's an authentic TPM.

Interestingly the key pair that this certificate is about is typically *not* persisted on the TPM chip. How can that be?

3️⃣1️⃣ Here's the 31st post highlighting key new features of the recently published v262 release of systemd. #systemd262 #systemd

For a long time systemd has known a concept of "first boot" conditioning: units and certain code paths are only run on the first boot of a system, but not the others. The first boot is determined by looking at /etc/machine-id: if that file has a fully populated UUID at boot, then it's not a first boot, otherwise it is.

Various components hook into this concept:

2️⃣6️⃣ Here's the 26th post highlighting key new features of the recently published v262 release of systemd. #systemd262 #systemd

When a new system is automatically deployed, a key part of it is to adapt the installation to the system it is deployed on. That can mean many things, but let's focus on one: there's a good chance some hardware-specific software needs to be installed, for example in form of a sysext, e.g. an extension image with additional drivers, or subsystems.

2️⃣7️⃣ Here's the 27th post highlighting key new features of the recently published v262 release of systemd. #systemd262 #systemd

Back in v258 we added ConcurrencyMax= to slice units, which allows pacing activation of units assigned to the slice. The knob puts a limit on how many units may be in "active" state at the same time. It turns systemd into a powerful run queue system: just queue services into a slice that uses the setting, and they'll be processed as the concurrency limit allows.

Montray - a tray icon for systemd service health https://lobste.rs/s/gveu0c #linux #systemd
https://github.com/dimonomid/montray/

systemd loves Rust via @lorenzleutgeb https://lobste.rs/s/62loik #linux #rust #systemd
https://amutable.com/blog/systemd-loves-rust

3️⃣4️⃣ Here's the 34th post highlighting key new features of the recently published v262 release of systemd. #systemd262 #systemd

For a long time systemd has supported rebooting via "kexec" as a mechanism very similar like regular reboots. In v261 the concept became a lot more powerful via support for "LUO", i.e. the ability to pass resources from the current OS cycle to the next, across a kexec reboot.

With v262 we are improving kexec support in more ways: "systemctl kexec"'s kernel…