[python] Generate ranges from items

Some years ago, I added a script for updating headers for (C) in the python files I was developing for Risu. In this way, the header got the list of authors and years working on the files updated automatically. With the pass of the years, the list started to became a bit too long, so I worked on creating code for getting ranges instead. This is the code I used:...

November 25, 2022 · 2 min · Pablo Iranzo Gómez

Automate code build and deployment with ansible

Let’s say that we want to keep our system updated with some code which is not distributed as a regular package, but as a code in a repository (which unfortunately, it’s a pretty common situation). As a part of the ansible playbooks used for the hosts, I can add a snippet like this: gitrepos: - { url: "https://github.com/myrepo/repo.git", tag: "tagtocheckout", folder: "/root/path-for-check-out", chdir: "subdir to enter", build: "make build", exec: "build/mybuiltbinary", } With this definition in the host inventory, we can then in our playbook to perform several steps:...

November 9, 2022 · 3 min · Pablo Iranzo Gómez

OpenShift's oc debug and parallel execution

A colleague reported some issues in the OpenShift troubleshooting and diagnosis scripts at OpenShift-checks. Some time ago I did contribute some changes to use functions and allow using the RISU wrapper to the scripts, helping consuming the results via RISU’s HTML interface. As my colleague reported, for some plugins, the output of the command was not shown in the HTML Interface. After some investigation, it was found that parallel execution for the plugins was causing no output to be shown, but when filtering to individual ones via risu -i XXXXXXX/plugin -l it was working fine… the problem was not the check itself, as both of them worked fine when executed individually but failed when executing them together....

November 3, 2022 · 2 min · Pablo Iranzo Gómez

[Book] Red Hat Enterprise Linux 9 Administration

Last year, together with my colleagues Miguel and Scott, we released with the help of Packt team the RHEL8 Administration. During this one, with the collaboration of Pedro, a long-time colleague from the University LUG, we worked on the updated Red Hat Enterprise Linux 9 Administration book that it’s now available for preorder on Amazon. As with the previous version, the book targets users willing to learn skills to administer Red Hat Enterprise Linux or compatible systems....

October 12, 2022 · 1 min · iranzo

Setup a Quay mirror for offline installations with mirror-registry

In order to setup disconnected registry for installation, follow this blog post by Daniel at Introducing Mirror Registry for Red Hat OpenShift. At the end of the process it will output something like: INFO[2022-08-19 07:10:22] Quay installed successfully, permanent data is stored in /etc/quay-install INFO[2022-08-19 07:10:22] Quay is available at https://${HOSTNAME}:8443 with credentials (init, ${PASSWORDSTRING}) Once the setup is done, remember several steps: Edit /etc/containers/registries.conf to add relevant entries for our registry as required:...

August 19, 2022 · 2 min · Pablo Iranzo Gómez
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