++ oc logs pod/collector-xwgc7 -c collector
Setting each total_size_limit for 1 buffers to 6360187084 bytes
Setting queued_chunks_limit_size for each buffer to 758
Setting chunk_limit_size for each buffer to 8388608
2022-04-11 07:52:10 +0000 [warn]: '@' is the system reserved prefix. It works in the nested configuration for now but it will be rejected: @timestamp
/usr/local/share/gems/gems/fluent-plugin-elasticsearch-5.2.1/lib/fluent/plugin/elasticsearch_compat.rb:8: warning: already initialized constant TRANSPORT_CLASS
/usr/local/share/gems/gems/fluent-plugin-elasticsearch-5.2.1/lib/fluent/plugin/elasticsearch_compat.rb:3: warning: previous definition of TRANSPORT_CLASS was here
/usr/local/share/gems/gems/fluent-plugin-elasticsearch-5.2.1/lib/fluent/plugin/elasticsearch_compat.rb:25: warning: already initialized constant SELECTOR_CLASS
/usr/local/share/gems/gems/fluent-plugin-elasticsearch-5.2.1/lib/fluent/plugin/elasticsearch_compat.rb:20: warning: previous definition of SELECTOR_CLASS was here
2022-04-11 07:52:12 +0000 [warn]: 'enable' parameter is deprecated: Use <transport tls> section
2022-04-11 07:52:12 +0000 [warn]: 'certificate_path' parameter is deprecated: Use cert_path in <transport tls> section
2022-04-11 07:52:12 +0000 [warn]: 'private_key_path' parameter is deprecated: Use private_key_path in <transport tls> section
2022-04-11 07:52:12 +0000 [warn]: For security reason, setting private_key_passphrase is recommended when cert_path is specified

<system>
  log_level "#{ENV['LOG_LEVEL'] || 'warn'}"
</system>

1. Prometheus Monitoring
   <source>
     @type prometheus
     bind "#{ENV['POD_IP']}"
     <ssl>
       enable true
       certificate_path "#{ENV['METRICS_CERT'] || '/etc/fluent/metrics/tls.crt'}"
       private_key_path "#{ENV['METRICS_KEY'] || '/etc/fluent/metrics/tls.key'}"
     </ssl>
   </source>

<source>
  @type prometheus_monitor
  <labels>
    hostname ${hostname}
  </labels>
</source>