Red Hat has a program named Co.Lab which provides kits under request that employees can use to guide a STEM session on schools to perform different range of activities. We performed 2 sessions this year, one for the “We Are Red Hat Week” (WARHW), which happens every year around Halloween, when the first official release was launched back in 31st October 1994 (‘Halloween Release’). For the one at the office in Valencia, the range of ages was a bit wider so we did different kits and the parents were in charge of directing the lab for the kids....
OpenShift Layered Images for patching
With recent releases of OpenShift like 4.13 you can use CoreOS Layering to apply custom images to the nodes. The feature allows to build, via a Dockerfile a custom image that can later be applied to our nodes. Let’s review the steps: First we need to find the base image being used in our environment with oc adm release info quay.io/openshift-release-dev/ocp-release:4.13.5-aarch64 --image-for=rhel-coreos Then we use the returned value in the FROM line in our Dockerfile If we want to add custom packages, we should have a server which is reachable and run createrepo on the folder containing the rpm’s so that rpm-ostree can download them for installation....
mydlink Website from Linux
Hi had the chance to buy a Dlink camera, waterproof, with magnetic base and rated for exteriors for a really great price a while ago. The camera, of course has an application for configuration, viewing the image, etc named ‘mydlink’ which has a web counterpart at https://mydlink.com/, but unfortunately, when you try to access the website, there’s little you can do: Which translates to: An incompatible browser or operating system has been detected!...
No matching key found
As you might have experienced… using a recent system to connect to a legacy one could be complicated as some insecure protocols have been disabled, with a message like: Unable to negotiate with 192.168.2.82 port 22: no matching host key type found. Their offer: ssh-rsa,ssh-dss Create an entry like this in your .ssh/config file, so that insecure methods can be used to connect to a specific host: Host 192.168.2.82 HostKeyAlgorithms=+ssh-rsa KexAlgorithms=+diffie-hellman-group1-sha1 PubkeyAcceptedKeyTypes=+ssh-rsa User root or alternatively on the command line:...
Upgrade Debian from buster to bullseye
I had two Raspberry Pi systems running Raspbian and they were failing to find updates for newer packages. As Debian stable was upgraded too, moving from buster to bullseye the packages failed to get the newer ones. Warning Beware as this procedure might upgrade the system but might no render a bootable Raspberry Pi A way to fix it is, to first, change references, if any, to the old codename version by running:...