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Ahmed Bessifi abessifi

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@williamcaban
williamcaban / Simulating Bare Metal with VirtualBMC.md
Last active May 30, 2024 11:39
Bare Metal IPMI for VMs with Virtual BMC

Simulate Bare-Metal IPMI for VMs in RHEL8 Libvirt

  • Install the Virtual BMC package in the machine to use as the vBMC server. Note1: When using OpenStack repos the python3-virtualbmc RPM might be available. These instrucctions do not use that package. 
    pip3 install virtualbmc
    • The vBMC server can be running in any machine. When using a remote libvirt server it is recommended to have passwordless authentication from the vBMC server to the libvirt machines.
    • For this document the vBMC Server export vBMCServerIP=192.168.1.13
@miguelmota
miguelmota / notes.txt
Last active April 14, 2024 08:26
runc vs gvisor (runsc) vs rkt vs KataContainers vs NablaContainers
knowledge dump on container runtimes
KataContainers
- image coupled with kernel
- light vm layer
- can run in nested virturalization environments if hardware supports and you can enable it in bios (ex. only bare metal EC2 instances, limits many cloud providers)
- slower startup time
- OCI compliant
- previously known as ClearContainers by Intel
@alexellis
alexellis / README.md
Last active June 6, 2024 19:45
OpenFaaS functions on knative

Portability with knative

Three functions from the OpenFaaS store have been packaged as "knative serving" definitions. No change to the container or code is needed.

  • Inception - identify the content of images with machine-learning - is it a bird, a plane or what?
  • Colorise - turn any black and white image into colour
  • NodeInfo - give system info, pass "verbose" as the body for network adapters etc.
@jpswade
jpswade / devops_best_practices.md
Last active July 11, 2024 16:16
Devops Best Practices Checklist

Find the original here article here: Devops Best Practices

DevOps started out as "Agile Systems Administration". In 2008, at the Agile Conference in Toronto, Andrew Shafer posted an offer to moderate an ad hoc "Birds of a Feather" meeting to discuss the topic of "Agile Infrastructure". Only one person showed up to discuss the topic: Patrick Debois. Their discussions and sharing of ideas with others advanced the concept of "agile systems administration". Debois and Shafer formed an Agile Systems Administrator group on Google, with limited success. Patrick Debois did a presentation called "Infrastructure and Operations" addressing

@trajakovic
trajakovic / docker_1.13_manual_install_centos.sh
Created March 28, 2017 09:07
Docker 1.13 manual installation on CentOS7 for Openshfit Origin 1.5.0.rc0 (since latest docker version is 17.03, oc cluster up is not happy with version)
yum install wget
wget https://yum.dockerproject.org/repo/main/centos/7/Packages/docker-engine-1.13.1-1.el7.centos.x86_64.rpm
wget https://yum.dockerproject.org/repo/main/centos/7/Packages/docker-engine-selinux-1.13.1-1.el7.centos.noarch.rpm
#nice site with pckgs: https://pkgs.org/
#package for docker-engine-selinux
yum install -y policycoreutils-python
rpm -i docker-engine-selinux-1.13.1-1.el7.centos.noarch.rpm
@so0k
so0k / kubectl.md
Last active April 25, 2024 12:40
Playing with kubectl output

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no
@steinwaywhw
steinwaywhw / One Liner to Download the Latest Release from Github Repo.md
Last active July 24, 2024 07:00
One Liner to Download the Latest Release from Github Repo
  • Use curl to get the JSON response for the latest release
  • Use grep to find the line containing file URL
  • Use cut and tr to extract the URL
  • Use wget to download it
curl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \