不加载ES相关的cm就没问题：
fluentd 04:34:48.31
fluentd 04:34:48.31 Welcome to the Bitnami fluentd container
fluentd 04:34:48.31 Subscribe to project updates by watching https://github.com/bitnami/containers
fluentd 04:34:48.31 Submit issues and feature requests at https://github.com/bitnami/containers/issues
fluentd 04:34:48.31
fluentd 04:34:48.31 INFO ==> ** Starting Fluentd setup **
find: '/docker-entrypoint-initdb.d/': No such file or directory
fluentd 04:34:48.33 INFO ==> No custom scripts in /docker-entrypoint-initdb.d
fluentd 04:34:48.33 INFO ==> ** Fluentd setup finished! **
fluentd 04:34:48.34 INFO ==> ** Starting Fluentd **
2023-03-02 04:34:50 +0000 [info]: init supervisor logger path=nil rotate_age=nil rotate_size=nil
2023-03-02 04:34:50 +0000 [info]: parsing config file is succeeded path="/opt/bitnami/fluentd/conf/fluentd.conf"
2023-03-02 04:34:50 +0000 [info]: gem 'fluentd' version '1.15.3'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-concat' version '2.5.0'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-detect-exceptions' version '0.0.14'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-elasticsearch' version '5.2.4'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-grafana-loki' version '1.2.20'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-kafka' version '0.18.1'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-kubernetes_metadata_filter' version '3.1.3'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-multi-format-parser' version '1.0.0'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-prometheus' version '2.0.3'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-record-modifier' version '2.1.1'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-rewrite-tag-filter' version '2.4.0'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-s3' version '1.7.2'
2023-03-02 04:34:50 +0000 [info]: gem 'fluent-plugin-systemd' version '1.0.5'
2023-03-02 04:34:51 +0000 [warn]: define <match fluent.**> to capture fluentd logs in top level is deprecated. Use <label @FLUENT_LOG> instead
2023-03-02 04:34:51 +0000 [info]: using configuration file: <ROOT>
<match fluent.**>
@type null
</match>
<source>
@type forward
bind "0.0.0.0"
port 24224
</source>
<source>
@type http
bind "0.0.0.0"
port 9880
</source>
<match fluentd.healthcheck>
@type stdout
</match>
<match **>
@type stdout
</match>
</ROOT>
2023-03-02 04:34:51 +0000 [info]: starting fluentd-1.15.3 pid=1 ruby="3.1.3"
2023-03-02 04:34:51 +0000 [info]: spawn command to main: cmdline=["/opt/bitnami/ruby/bin/ruby", "-Eascii-8bit:ascii-8bit", "/opt/bitnami/fluentd/bin/fluentd", "--config", "/opt/bitnami/fluentd/conf/fluentd.conf", "--plugin", "/opt/bitnami/fluentd/plugins", "--under-supervisor"]
2023-03-02 04:34:51 +0000 [info]: init supervisor logger path=nil rotate_age=nil rotate_size=nil
2023-03-02 04:34:53 +0000 [info]: #0 init worker0 logger path=nil rotate_age=nil rotate_size=nil
2023-03-02 04:34:53 +0000 [info]: adding match pattern="fluent.**" type="null"
2023-03-02 04:34:53 +0000 [info]: adding match pattern="fluentd.healthcheck" type="stdout"
2023-03-02 04:34:53 +0000 [info]: adding match pattern="**" type="stdout"
2023-03-02 04:34:53 +0000 [info]: adding source type="forward"
2023-03-02 04:34:53 +0000 [info]: adding source type="http"
2023-03-02 04:34:54 +0000 [warn]: #0 define <match fluent.**> to capture fluentd logs in top level is deprecated. Use <label @FLUENT_LOG> instead
2023-03-02 04:34:54 +0000 [info]: #0 starting fluentd worker pid=31 ppid=1 worker=0
2023-03-02 04:34:54 +0000 [info]: #0 listening port port=24224 bind="0.0.0.0"
2023-03-02 04:34:54 +0000 [info]: #0 fluentd worker is now running worker=0
加载了es相关的配置就出错：
helm install fluentd bitnami/fluentd -n efk-bitnami --version 5.5.15 \
--set aggregator.configMap=elasticsearch-output \
--set aggregator.extraEnv[0].name=ELASTICSEARCH_HOST \
--set aggregator.extraEnv[0].value=elasticsearch-coordinating-hl.efk-bitnami.svc.cluster.local \
--set aggregator.extraEnv[1].name=ELASTICSEARCH_PORT \
--set aggregator.extraEnv[1].value=9200
从配置文件变了开始就出错：
2023-03-02 04:45:42 +0000 [info]: using configuration file: <ROOT>
<source>
@type prometheus
port 24231
</source>
<source>
@type prometheus_monitor
<labels>
host ${hostname}
</labels>
</source>
<source>
@type prometheus_output_monitor
<labels>
host ${hostname}
</labels>
</source>
<match fluent.**>
@type null
</match>
<source>
@type forward
bind "0.0.0.0"
port 24224
</source>
<source>
@type http
bind "0.0.0.0"
port 9880
</source>
<match fluentd.healthcheck>
@type stdout
</match>
<match **>
@type elasticsearch
include_tag_key true
host ""
port tcp://172.19.30.234:9200
logstash_format true
<buffer>
@type "file"
path "/opt/bitnami/fluentd/logs/buffers/logs.buffer"
flush_thread_count 2
flush_interval 5s
</buffer>
</match>
</ROOT>
2023-03-02 04:45:42 +0000 [info]: starting fluentd-1.15.3 pid=1 ruby="3.1.3"
2023-03-02 04:45:42 +0000 [info]: spawn command to main: cmdline=["/opt/bitnami/ruby/bin/ruby", "-Eascii-8bit:ascii-8bit", "/opt/bitnami/fluentd/bin/fluentd", "--config", "/opt/bitnami/fluentd/conf/fluentd.conf", "--plugin", "/opt/bitnami/fluentd/plugins", "--under-supervisor"]
2023-03-02 04:45:42 +0000 [info]: init supervisor logger path=nil rotate_age=nil rotate_size=nil
2023-03-02 04:45:44 +0000 [info]: #0 init worker0 logger path=nil rotate_age=nil rotate_size=nil
2023-03-02 04:45:44 +0000 [info]: adding match pattern="fluent.**" type="null"
2023-03-02 04:45:44 +0000 [info]: adding match pattern="fluentd.healthcheck" type="stdout"
2023-03-02 04:45:45 +0000 [info]: adding match pattern="**" type="elasticsearch"
The client is unable to verify that the server is Elasticsearch. Some functionality may not be compatible if the server is running an unsupported product.
2023-03-02 04:45:45 +0000 [error]: #0 unexpected error error_class=NoMethodError error="undefined method `+' for nil:NilClass\n\n datum[:headers]['Host'] ||= datum[:host] + port_string(datum)\n ^"
^"
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/excon-0.99.0/lib/excon/connection.rb:250:in `request'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/faraday-excon-1.1.0/lib/faraday/adapter/excon.rb:31:in `block in call'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/faraday-1.10.3/lib/faraday/adapter.rb:50:in `connection'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/faraday-excon-1.1.0/lib/faraday/adapter/excon.rb:31:in `call'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/faraday-1.10.3/lib/faraday/rack_builder.rb:154:in `build_response'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/faraday-1.10.3/lib/faraday/connection.rb:516:in `run_request'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/elastic-transport-8.2.0/lib/elastic/transport/transport/http/faraday.rb:41:in `block in perform_request'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/elastic-transport-8.2.0/lib/elastic/transport/transport/base.rb:296:in `perform_request'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/elastic-transport-8.2.0/lib/elastic/transport/transport/http/faraday.rb:36:in `perform_request'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/elastic-transport-8.2.0/lib/elastic/transport/client.rb:176:in `perform_request'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/elasticsearch-8.6.0/lib/elasticsearch.rb:160:in `elasticsearch_validation_request'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/elasticsearch-8.6.0/lib/elasticsearch.rb:85:in `verify_elasticsearch'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/elasticsearch-8.6.0/lib/elasticsearch.rb:70:in `method_missing'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/elasticsearch-api-8.6.0/lib/elasticsearch/api/actions/info.rb:41:in `info'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluent-plugin-elasticsearch-5.2.4/lib/fluent/plugin/out_elasticsearch.rb:496:in `detect_es_major_version'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluent-plugin-elasticsearch-5.2.4/lib/fluent/plugin/out_elasticsearch.rb:487:in `block in handle_last_seen_es_major_version'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluent-plugin-elasticsearch-5.2.4/lib/fluent/plugin/elasticsearch_index_template.rb:56:in `retry_operate'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluent-plugin-elasticsearch-5.2.4/lib/fluent/plugin/out_elasticsearch.rb:484:in `handle_last_seen_es_major_version'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluent-plugin-elasticsearch-5.2.4/lib/fluent/plugin/out_elasticsearch.rb:336:in `configure'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/plugin.rb:187:in `configure'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/agent.rb:132:in `add_match'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/agent.rb:74:in `block in configure'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/agent.rb:64:in `each'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/agent.rb:64:in `configure'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/root_agent.rb:149:in `configure'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/engine.rb:105:in `configure'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/engine.rb:80:in `run_configure'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/supervisor.rb:782:in `block in run_worker'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/supervisor.rb:1056:in `main_process'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/supervisor.rb:774:in `run_worker'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/lib/fluent/command/fluentd.rb:370:in `<top (required)>'
2023-03-02 04:45:45 +0000 [error]: #0 <internal:/opt/bitnami/ruby/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:88:in `require'
2023-03-02 04:45:45 +0000 [error]: #0 <internal:/opt/bitnami/ruby/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:88:in `require'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/gems/fluentd-1.15.3/bin/fluentd:15:in `<top (required)>'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/bin/fluentd:25:in `load'
2023-03-02 04:45:45 +0000 [error]: #0 /opt/bitnami/fluentd/bin/fluentd:25:in `<main>'
2023-03-02 04:45:46 +0000 [error]: Worker 0 exited unexpectedly with status 1