Login : admrescue/admrescue
# Requirement
Ansible (+ pip):
If you don't have pip yet
curl https://bootstrap.pypa.io/get-pip.py -o /tmp/get-pip.py
python3 /tmp/get-pip.py --user
python3 -m pip install --user ansible
pip install -r requirement.txt
Ansible collections:
ansible-galaxy collection install kubernetes.core
Mosquitto
sudo apt update && apt install -y mosquitto mosquitto-clients
need to add a conf file in /etc/mosquitto/conf.d/mosquitto.conf containing :
allow_anonymous true
listener 1883 0.0.0.0
sudo systemctl restart mosquitto
Launch the mosquitto client to receive message on the machine that hosts the mosquitto server : sudo mosquitto_sub -h 127.0.0.1 -t argo/alpr
Argo
Execute/submite a workflow
argo submit PATH_TO_YAML --watch --serviceaccount=argo -n argo
Troubleshoot
k3s bind to local port
On certain distro you might already have an other mini k8s. A sign of this is k3s being able to install, start but never being stable, restarting non stop.
You should try to see if the port used by k3s are arlready binded :
sudo netstat -tuln | grep -E '6443|10250'
If those ports are already in use then you should identify which service run behidn them and then stop them and preferably uninstall them.
We have already encountered an instance of Ubuntu Server with minikube already installed.
Remove minikube
sudo systemctl stop snap.microk8s.daemon-kubelite
sudo systemctl disable snap.microk8s.daemon-kubelite
sudo systemctl restart k3s
Use local container images
We have encountered difficulties declaring container images that correspond to local images (stored in docker.io/library/)
We used a docker hub repository to pull our customized image. For this we need to create a secret holding the login informations to a docker account that has access to this repository, which we then link to the serviceAccount running the workflow :
Create the secret in the argo namespace
kubectl create secret docker-registry regcred --docker-username=[DOCKER HUB USERNAME] --docker-password=[DOCKER HUB PASSWORD] -n argo
Patch the argo serviceAccount to use the secret when pulling image
kubectl patch serviceaccount argo -n argo -p '{"imagePullSecrets": [{"name": "regcred"}]}'