Target relabel debug

Original labels: {__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", job="podScrape/volcano-metrics/mysql-exporter/0"}


action: keep
source_labels: [__meta_kubernetes_pod_label_k8s_app]
regex: mysql-exporter
action: keep
source_labels: [__meta_kubernetes_pod_container_port_name]
regex: mysql-metrics
source_labels: [__meta_kubernetes_namespace]
target_label: namespace
source_labels: [__meta_kubernetes_pod_container_name]
target_label: container
source_labels: [__meta_kubernetes_pod_name]
target_label: pod
target_label: job
replacement: volcano-metrics/mysql-exporter
target_label: endpoint
replacement: mysql-metrics
action: replace
source_labels: [instance]
target_label: instance
regex: (.*)
replacement: mysql-master
remove labels with __ prefix

Step	Relabeling Rule	Input Labels	Output labels
0	action: keep source_labels: [__meta_kubernetes_pod_label_k8s_app] regex: mysql-exporter	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", job="podScrape/volcano-metrics/mysql-exporter/0"}	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", job="podScrape/volcano-metrics/mysql-exporter/0"}
1	action: keep source_labels: [__meta_kubernetes_pod_container_port_name] regex: mysql-metrics	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", job="podScrape/volcano-metrics/mysql-exporter/0"}	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", job="podScrape/volcano-metrics/mysql-exporter/0"}
2	source_labels: [__meta_kubernetes_namespace] target_label: namespace	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", job="podScrape/volcano-metrics/mysql-exporter/0"}	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", job="podScrape/volcano-metrics/mysql-exporter/0", namespace="volcano-metrics"}
3	source_labels: [__meta_kubernetes_pod_container_name] target_label: container	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", job="podScrape/volcano-metrics/mysql-exporter/0", namespace="volcano-metrics"}	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", job="podScrape/volcano-metrics/mysql-exporter/0", namespace="volcano-metrics"}
4	source_labels: [__meta_kubernetes_pod_name] target_label: pod	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", job="podScrape/volcano-metrics/mysql-exporter/0", namespace="volcano-metrics"}	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", job="podScrape/volcano-metrics/mysql-exporter/0", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}
5	target_label: job replacement: volcano-metrics/mysql-exporter	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", job="podScrape/volcano-metrics/mysql-exporter/0", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", job="volcano-metrics/mysql-exporter", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}
6	target_label: endpoint replacement: mysql-metrics	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", job="volcano-metrics/mysql-exporter", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", endpoint="mysql-metrics", job="volcano-metrics/mysql-exporter", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}
7	*action: replace source_labels: [instance] target_label: instance regex: (.) replacement: mysql-master**	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", endpoint="mysql-metrics", job="volcano-metrics/mysql-exporter", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", endpoint="mysql-metrics", instance="mysql-master", job="volcano-metrics/mysql-exporter", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}
8	remove labels with __ prefix	{__address__="172.21.1.246:9104", __meta_kubernetes_namespace="volcano-metrics", __meta_kubernetes_pod_container_image="prom/mysqld-exporter:v0.12.1", __meta_kubernetes_pod_container_init="false", __meta_kubernetes_pod_container_name="mysql-exporter", __meta_kubernetes_pod_container_port_name="mysql-metrics", __meta_kubernetes_pod_container_port_number="9104", __meta_kubernetes_pod_container_port_protocol="TCP", __meta_kubernetes_pod_controller_kind="ReplicaSet", __meta_kubernetes_pod_controller_name="mysql-exporter-586dbb8b96", __meta_kubernetes_pod_host_ip="192.168.0.32", __meta_kubernetes_pod_ip="172.21.1.246", __meta_kubernetes_pod_label_k8s_app="mysql-exporter", __meta_kubernetes_pod_label_pod_template_hash="586dbb8b96", __meta_kubernetes_pod_labelpresent_k8s_app="true", __meta_kubernetes_pod_labelpresent_pod_template_hash="true", __meta_kubernetes_pod_name="mysql-exporter-586dbb8b96-4r2m2", __meta_kubernetes_pod_node_name="192.168.0.32", __meta_kubernetes_pod_phase="Running", __meta_kubernetes_pod_ready="true", __meta_kubernetes_pod_uid="d3894147-6176-4026-a8d1-5af03ba2b406", __metrics_path__="/metrics", __scheme__="http", __scrape_interval__="30s", __scrape_timeout__="10s", container="mysql-exporter", endpoint="mysql-metrics", instance="mysql-master", job="volcano-metrics/mysql-exporter", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}	{container="mysql-exporter", endpoint="mysql-metrics", instance="mysql-master", job="volcano-metrics/mysql-exporter", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}

Resulting labels: {container="mysql-exporter", endpoint="mysql-metrics", instance="mysql-master", job="volcano-metrics/mysql-exporter", namespace="volcano-metrics", pod="mysql-exporter-586dbb8b96-4r2m2"}