Metric
The collector exposes a bunch of OpenMetrics for monitoring:
otelcol_exporter_enqueue_failed_log_records
otelcol_exporter_enqueue_failed_metric_points
otelcol_exporter_enqueue_failed_spans
otelcol_exporter_queue_size
otelcol_exporter_sent_metric_points
otelcol_exporter_sent_spans
otelcol_otelsvc_k8s_ip_lookup_miss
otelcol_otelsvc_k8s_pod_added
otelcol_otelsvc_k8s_pod_deleted
otelcol_otelsvc_k8s_pod_table_size
otelcol_otelsvc_k8s_pod_updated
otelcol_process_cpu_seconds
otelcol_process_memory_rss
otelcol_process_runtime_heap_alloc_bytes
otelcol_process_runtime_total_alloc_bytes
otelcol_process_runtime_total_sys_memory_bytes
otelcol_process_uptime
otelcol_processor_batch_batch_send_size_bucket
otelcol_processor_batch_batch_send_size_count
otelcol_processor_batch_batch_send_size_sum
otelcol_processor_batch_batch_size_trigger_send
otelcol_processor_batch_timeout_trigger_send
otelcol_processor_groupbyattrs_num_grouped_spans
otelcol_processor_groupbyattrs_span_groups_bucket
otelcol_processor_groupbyattrs_span_groups_count
otelcol_processor_groupbyattrs_span_groups_sum
otelcol_receiver_accepted_metric_points
otelcol_receiver_accepted_spans
otelcol_receiver_refused_metric_points
otelcol_receiver_refused_spans