Inspecting OpenShift cgroups from inside the pod

My team at Red Hat builds a lot of kernels in OpenShift pods as part of our work with the Continuous Kernel Integration (CKI) project. We have lots of different pod sizes depending on the type of work we are doing and our GitLab runners spawn these pods based on the tags in our GitLab CI pipeline. Compiling with make When you compile a large software project, such as the Linux kernel, you can use multiple CPU cores to speed up the build.

Running Ansible in OpenShift with arbitrary UIDs

My work at Red Hat involves testing lots and lots of kernels from various sources and we use GitLab CE to manage many of our repositories and run our CI jobs. Those jobs run in thousands of OpenShift containers that we spawn every day. OpenShift has some handy security features that we like. First, each container is mounted read-only with some writable temporary space (and any volumes that you mount).

Get a /56 from Spectrum using wide-dhcpv6

After writing my last post on my IPv6 woes with my Pixel 3, some readers asked how I’m handling IPv6 on my router lately. I wrote about this previously when Spectrum was Time Warner Cable and I was using Mikrotik network devices. There is a good post from 2015 on the blog and it still works today: Time Warner Road Runner, Linux, and large IPv6 subnets I am still using that same setup today, but some readers found it difficult to find the post since Time Warner Cable has renamed to Spectrum.

Pixel 3 Wi-Fi drops constantly

We have two Google Pixel phones in our house: a Pixel 2 and a Pixel 3. Both of them drop off our home wireless network regularly. It causes lots of problems with various applications on the phones, especially casting video via Chromecast. At the time when I first noticed the drops, I was using a pair of wireless access points (APs) from Engenius: EAP600 EAP1200H Also, here’s what I knew at the time:

Stop audio pops on Intel HD Audio

I recently picked up a Dell Optiplex 7060 and I’m using it as my main workstation now. The Fedora installation was easy, but I noticed a variety of “pop” or clicking sounds when audio played, especially terminal bells. If everything was quiet and I triggered a terminal bell, I would hear a loud pop just before the terminal bell sound. However, if I played music and then triggered a terminal bell, the pop was gone.