PostgreSQL

CREATE OR REPLACE FUNCTION __tmp_create_user() returns void as $$
BEGIN
  IF NOT EXISTS (
          SELECT                       -- SELECT list can stay empty for this
          FROM   pg_catalog.pg_user
          WHERE  usename = 'postgres_exporter') THEN
    CREATE USER postgres_exporter;
  END IF;
END;
$$ language plpgsql;

SELECT __tmp_create_user();
DROP FUNCTION __tmp_create_user();

ALTER USER postgres_exporter WITH PASSWORD 'password';
ALTER USER postgres_exporter SET SEARCH_PATH TO postgres_exporter,pg_catalog;

-- If deploying as non-superuser (for example in AWS RDS), uncomment the GRANT
-- line below and replace <MASTER_USER> with your root user.
-- GRANT postgres_exporter TO <MASTER_USER>;
CREATE SCHEMA IF NOT EXISTS postgres_exporter;
GRANT USAGE ON SCHEMA postgres_exporter TO postgres_exporter;
GRANT CONNECT ON DATABASE postgres TO postgres_exporter;

CREATE OR REPLACE FUNCTION get_pg_stat_activity() RETURNS SETOF pg_stat_activity AS
$$ SELECT * FROM pg_catalog.pg_stat_activity; $$
LANGUAGE sql
VOLATILE
SECURITY DEFINER;

CREATE OR REPLACE VIEW postgres_exporter.pg_stat_activity
AS
  SELECT * from get_pg_stat_activity();

GRANT SELECT ON postgres_exporter.pg_stat_activity TO postgres_exporter;

CREATE OR REPLACE FUNCTION get_pg_stat_replication() RETURNS SETOF pg_stat_replication AS
$$ SELECT * FROM pg_catalog.pg_stat_replication; $$
LANGUAGE sql
VOLATILE
SECURITY DEFINER;

CREATE OR REPLACE VIEW postgres_exporter.pg_stat_replication
AS
  SELECT * FROM get_pg_stat_replication();

GRANT SELECT ON postgres_exporter.pg_stat_replication TO postgres_exporter;

kubectl create -n Your-Application-Namespace secret generic postgresql-exporter \
  --from-literal=username=userName \
  --from-literal=password=password

kubectl create -n Your-Application-Namespace secret generic postgresql-exporter \
  --from-literal=username=userName \
  --from-literal=password=password \
  --from-file=sslRootCert=/path/to/tls/cert

- job_name: postgres-default
  tls_config:
    insecure_skip_verify: true
  kubernetes_sd_configs:
  - role: pod
  relabel_configs:
  - action: keep
    source_labels: [__meta_kubernetes_pod_host_ip]
    regex: __HOSTIPS__
  - action: keep
    source_labels:
    - __meta_kubernetes_pod_annotation_promcat_sysdig_com_integration_type
    regex: "postgresql"
  - source_labels: [__meta_kubernetes_pod_phase]
    action: keep
    regex: Running
  - action: replace
    source_labels: [__meta_kubernetes_pod_annotation_promcat_sysdig_com_target_ns]
    target_label: kube_namespace_name
  - action: replace
    source_labels: [__meta_kubernetes_pod_annotation_promcat_sysdig_com_target_workload_type]
    target_label: kube_workload_type
  - action: replace
    source_labels: [__meta_kubernetes_pod_annotation_promcat_sysdig_com_target_workload_name]
    target_label: kube_workload_name
  - action: replace
    replacement: true
    target_label: sysdig_omit_source
  - action: replace
    source_labels: [__address__, __meta_kubernetes_pod_annotation_promcat_sysdig_com_port]
    regex: ([^:]+)(?::\d+)?;(\d+)
    replacement: $1:$2
    target_label: __address__
  - action: replace
    source_labels: [__meta_kubernetes_pod_uid]
    target_label: sysdig_k8s_pod_uid
  - action: replace
    source_labels: [__meta_kubernetes_pod_container_name]
    target_label: sysdig_k8s_pod_container_name
  metric_relabel_configs:
  - source_labels: [__name__]
    regex: (pg_replication_lag_seconds|pg_database_size_bytes|pg_locks_count|pg_settings_max_connections|pg_settings_superuser_reserved_connections|pg_stat_activity_count|pg_stat_activity_max_tx_duration|pg_stat_archiver_archived_count|pg_stat_archiver_failed_count|pg_stat_bgwriter_buffers_alloc_total|pg_stat_bgwriter_buffers_backend_total|pg_stat_bgwriter_buffers_checkpoint_total|pg_stat_bgwriter_buffers_clean_total|pg_stat_bgwriter_checkpoint_sync_time_total|pg_stat_bgwriter_checkpoint_write_time_total|pg_stat_bgwriter_checkpoints_req_total|pg_stat_bgwriter_checkpoints_timed_total|pg_stat_bgwriter_maxwritten_clean_total|pg_stat_database_blk_read_time|pg_stat_database_blks_hit|pg_stat_database_blks_read|pg_stat_database_conflicts_confl_deadlock|pg_stat_database_conflicts_confl_lock|pg_stat_database_deadlocks|pg_stat_database_numbackends|pg_stat_database_temp_bytes|pg_stat_database_tup_deleted|pg_stat_database_tup_fetched|pg_stat_database_tup_inserted|pg_stat_database_tup_returned|pg_stat_database_tup_updated|pg_stat_database_xact_commit|pg_stat_database_xact_rollback|pg_up)
    action: keep