istio-csr is an agent that allows for Istio workload and control plane components to be secured using cert-manager.
Certificates facilitating mTLS — both inter and intra-cluster — will be signed, delivered and renewed using cert-manager issuers.
istio-csr supports Istio v1.10+ and cert-manager v1.3+
Please follow the documentation at cert-manager.io for installing and using istio-csr.