k8s_container_cpu_limit{container_id="9d6a59b984b2e196b214accbfe3789c68aa04e925f99ccb32ae4feee7bf14eb9",container_image_name="fluent/fluent-bit",container_image_tag="1.9.1",k8s_cluster_name="",k8s_container_name="fluent-bit",k8s_namespace_name="*********",k8s_node_name="ip---49-147.ap-south-1.compute.internal",k8s_pod_name="fluent-bit-db2wp",k8s_pod_uid="67acfe9f-3a72-47b7-9f0a-4f763b68509e",opencensus_resourcetype="container"}

Can you give me some more idea about where you are not getting the k8s_cluster_name? Are you mentioning about the logs that are getting collected ?