cfssl genkey -initca ca-csr.json | cfssljson -bare ca
cfssl gencert -ca ca.pem -ca-key ca-key.pem cert-csr.json | cfssljson -bare client
cfssl gencert -ca ca.pem -ca-key ca-key.pem cert-csr.json | cfssljson -bare server
curl --location --request POST 'http://keycloak:8080/realms/opentelemetry/protocol/openid-connect/token' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'grant_type=client_credentials' \
--data-urlencode 'client_id=collector' \
--data-urlencode 'client_secret=ThisIsABook'
Why are Prometheus histograms cumulative? https://www.robustperception.io/why-are-prometheus-histograms-cumulative/