mcastelino

Trying Kata Containers with Firecracker (and QEMU)

Clearlinux bundles Kata Containers as well a firecracker.

To quickly experience how Kata Containers can be used to setup a cluster that can run Kubernetes with different types of isolation mechanisms we have created a simple developer enviornment. With this you can run workloads with runc (using cgroups, namespaces provided by the host kernel for isolation), Kata with QEMU/KVM (uses VT-x for isolation and QEMU as the hypervisor) and Kata with Firecracker (uses VT-x for isolation and the minimal Firecracker VMM).

scmx

Updating a local diverged git branch to latest remote without reset --hard

Sometimes you have a branch checked out locally that someone else owns and they do a force push. Perhaps it's during a review when they have pushed all the needed fixups and got them approved. So now they squash and force-push the branch. It's time for you to take a new look at the updated commits, so you checkout the branch and try to update it.

The situation

$ git checkout some-topic-branch
$ git pull