Install cert-manager & prometheus in k8s

Install Prometheus Operator

git clone https://github.com/coreos/prometheus-operator.git

kubectl create namespace monitoring

# update bundle.yaml文件中所有namespace from default -> monitoring
kubectl -n monitoring apply -f bundle.yaml

If failed(too long byte), using kubectl -n monitoring replace -f bundle.yaml

Install cert-manager

helm repo add jetstack https://charts.jetstack.io

helm repo update

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.13.1/cert-manager.crds.yaml


helm upgrade --install \
 cert-manager jetstack/cert-manager \
 --namespace cert-manager \
 --create-namespace \
 --version v1.13.1  \
 --set prometheus.enabled=true \
 --set prometheus.servicemonitor.enabled=true \
 --set webhook.timeoutSeconds=4

参考：
https://cert-manager.io/docs/installation/helm/
https://yunlzheng.gitbook.io/prometheus-book/part-iii-prometh...