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Michael Hrivnak mhrivnak

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@mhrivnak
mhrivnak / README.md
Created March 25, 2025 19:55
ansible-rulebook demo

Run ansible-rulebook, ensuring that rulebook.yml is in your current working directory.

$ podman run --rm -it -v ./:/data:z -e ANSIBLE_INVENTORY=localhost -p 5000:5000 quay.io/ansible/ansible-rulebook:latest ansible-rulebook --rulebook /data/rulebook.yml

POST some json that matches the condition:

curl -i -H 'Content-Type: application/json' -d "{\"message\": \"hello\"}" http://127.0.0.1:5000/
@mhrivnak
mhrivnak / openshift-containerd.md
Created March 17, 2022 03:20

containerd in OpenShift

This rough document captures steps that can be taken as an experiment to hack containerd into an OpenShift cluster. This should not be used for anything important.

Limitations:

  • The resulting cluster is not upgradeable.
  • None of OpenShift's disconnected features will work, because they are cri-o specific.

containerd RPM

@mhrivnak
mhrivnak / configmap.yml
Created January 7, 2022 21:33
podman env from configmap
apiVersion: v1
kind: ConfigMap
metadata:
name: config
data:
FOO: bar
@mhrivnak
mhrivnak / .gitignore
Last active June 10, 2021 19:26
Add Workers with Agents
pullsecret.yml
@mhrivnak
mhrivnak / baremetalasset.md
Created April 9, 2021 14:32
BareMetalAsset documentation

Assumptions

  • A management cluster serves as a "hub" from which bare metal clusters are created and managed.
  • A management application on the hub can provision and lifecycle bare metal clusters.
  • The hub cluster needs to maintain an inventory of physical hosts that can be used by the bare metal clusters it manages.

API

@mhrivnak
mhrivnak / cincinnati.yaml
Created April 1, 2020 17:31
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: cincinnati
name: cincinnati
spec:
replicas: 1
selector:
matchLabels:
@mhrivnak
mhrivnak / setup.sh
Created May 4, 2019 20:57
lab env setup
# install operator-sdk
curl -L https://github.com/operator-framework/operator-sdk/releases/download/v0.7.0/operator-sdk-v0.7.0-x86_64-linux-gnu -o bin/operator-sdk
chmod 755 bin/operator-sdk
# install other utils
yum install -y jq tree ansible python-devel golang
# install "dep"
curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
@mhrivnak
mhrivnak / requirements.md
Last active January 26, 2019 14:37
DevConf.cz 2019 Ansible K8s Lab Requirements

Please bring a laptop to the lab with the following:

  • Web Browser
  • Internet connection
  • Coffee (optional?)
@mhrivnak
mhrivnak / Gopkg.toml
Created September 27, 2018 14:34
Reads a yaml file and creates resources in k8s
[[constraint]]
name = "k8s.io/apimachinery"
version = "kubernetes-1.11.2"
[[constraint]]
name = "k8s.io/client-go"
version = "kubernetes-1.11.2"
[[constraint]]
name = "sigs.k8s.io/controller-runtime"
@mhrivnak
mhrivnak / py-vs-go.txt
Last active September 18, 2018 03:12
# redoing the comparison from this blog post using KeepAlive:
# https://www.peterbe.com/plog/govspy
falcon
- no keepalive
Requests per second: 3217.84 [#/sec] (mean)
Requests per second: 3229.56 [#/sec] (mean)
Requests per second: 3251.01 [#/sec] (mean)
- keepalive
Requests per second: 3003.11 [#/sec] (mean)