Tag: openfaas

Scale to Zero with Openfaas serverless deployment

Create openfass serverless deployment

1.update faas-idler deployment in k8 from dryRun=true to dryRun=false

2.While deploying the openfass faas-idler add “com.openfaas.scale.zero=true”

sudo faas-cli deploy -f python-fn.yml  --label "com.openfaas.scale.zero=true"

https://docs.openfaas.com/architecture/autoscaling/

Openfaas – serverless deployment with k8

1.Create serverless python3 deployment

faas-cli new --lang python3 python-fn --gateway http://192.168.0.183:31112 --prefix=192.168.0.183:30500/python-fn

–prefix = Docker private repository
–gateway = Openfass gateway server

2.It will create the python-fn directory and python-fn.yml file

3.Write your python code inside python-fn/handler.py

def handle(req):
    """handle a request to the function
    Args:
        req (str): request body
    """
    print("hola-openfaas")
    return req

4.Build / Push / Deploy

faas-cli build -f python-fn.yml
faas-cli push -f python-fn.yml
export OPENFAAS_URL=http://192.168.0.183:31112
faas-cli login --password "YOUR_Openfaas_PASSWORD"
faas-cli deploy -f python-fn.yml

5. Remove

faas-cli remove -f python-fn.yml
rm -rf python-fn*

Openfaas installation in k8

curl -sL https://cli.openfaas.com | sudo sh

git clone https://github.com/openfaas/faas-netes

kubectl apply -f https://raw.githubusercontent.com/openfaas/faas-netes/master/namespaces.yml

PASSWORD=$(head -c 12 /dev/urandom | shasum| cut -d' ' -f1)

kubectl -n openfaas create secret generic basic-auth \
--from-literal=basic-auth-user=admin \
--from-literal=basic-auth-password="$PASSWORD"

cd faas-netes

kubectl apply -f ./yaml

nohup kubectl port-forward svc/gateway -n openfaas 31112:8080 &


export OPENFAAS_URL=http://192.168.0.183:31112

echo -n "$PASSWORD" | faas-cli login --password-stdin

echo "$PASSWORD"

https://docs.openfaas.com/deployment/kubernetes/