ThanosRuler.spec.containers[].env[].valueFrom.resourceFieldRef.spec.grpcServerTlsConfig.curves

curves defines the list of preferred elliptic curves for TLS handshakes. If not defined, the Go default curves are used. Available curves are documented in the Go documentation: https://golang.org/pkg/crypto/tls/#CurveID It requires Thanos >= v0.42.0. Note that the operator doesn't verify if the Thanos version supports the provided values.