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Fluentd encountered a memory error (free(): invalid pointer) #1484

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Alisher-Nabiev opened this issue Feb 29, 2024 · 4 comments
Open

Fluentd encountered a memory error (free(): invalid pointer) #1484

Alisher-Nabiev opened this issue Feb 29, 2024 · 4 comments
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waiting-for-triage

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@Alisher-Nabiev
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Describe the bug

hi,
I have fluentd on EKS after updating the cluster from 1.24 to 1.25, i got an issue with fluentd pod.
every pod on my 2 clusters (staging and prod) has an error (free(): invalid pointer) and fills up my pod space with a core. files
I assume it's core dumps error files that cause my node to DiskPressure and evict my fluentd pods and reload them.
It happened to me in every node in the clusters.

To Reproduce

Expected behavior

Your Environment

- Tag of using fluentd-kubernetes-daemonset: 
docker.io/fluent/fluentd-kubernetes-daemonset:v1-debian-elasticsearch

docker.io/fluent/fluentd-kubernetes-daemonset@sha256:8e330e587cc0a918fca59a1e07cfd80340d8002032cd62e359b3e30a9da4b2ee

Your Configuration

# AUTOMATICALLY GENERATED
# DO NOT EDIT THIS FILE DIRECTLY, USE /templates/conf/fluent.conf.erb   

@include "#{ENV['FLUENTD_SYSTEMD_CONF'] || 'systemd'}.conf"
@include "#{ENV['FLUENTD_PROMETHEUS_CONF'] || 'prometheus'}.conf"       
@include kubernetes.conf
@include conf.d/*.conf

<filter kubernetes.var.log.containers.**----**.log>
  @type parser
  key_name log
  reserve_data true
  reserve_time true
  hash_value_field -------------fields
  remove_key_name_field false
  replace_invalid_sequence false
  emit_invalid_record_to_error true
  <parse>
    @type json
  </parse>
</filter>

<filter kubernetes.var.log.containers.**----**.log kubernetes.var.log.containers.----**.log kubernetes.var.log.containers.-----**.log kubernetes.var.log.containers.-----**.log>
  @type parser
  key_name log
  reserve_data true
  reserve_time true
  hash_value_field fields
  remove_key_name_field false
  replace_invalid_sequence false
  emit_invalid_record_to_error true
  <parse>
    @type json
  </parse>
</filter>

<label @ERROR>
  <match **>
    @type null
  </match>
</label>

<match kubernetes.var.log.containers.*----**.log kubernetes.var.log.containers.----**.log kubernetes.var.log.containers.-----**.log kubernetes.var.log.containers.-----**.log>
  @type elasticsearch
  @id out_es
  @log_level debug 
  include_tag_key true
  hosts "#{ENV['FLUENT_ELASTICSEARCH_HOST']}"
  port "#{ENV['FLUENT_ELASTICSEARCH_PORT']}"
  path "#{ENV['FLUENT_ELASTICSEARCH_PATH']}"
  scheme "#{ENV['FLUENT_ELASTICSEARCH_SCHEME'] || 'http'}"
  ssl_verify "#{ENV['FLUENT_ELASTICSEARCH_SSL_VERIFY'] || 'true'}"     
  ssl_version "#{ENV['FLUENT_ELASTICSEARCH_SSL_VERSION'] || 'TLSv1_2'}"
  user "#{ENV['FLUENT_ELASTICSEARCH_USER'] || use_default}"
  password "#{ENV['FLUENT_ELASTICSEARCH_PASSWORD'] || use_default}"
  reload_connections "#{ENV['FLUENT_ELASTICSEARCH_RELOAD_CONNECTIONS'] || 'false'}"
  reconnect_on_error "#{ENV['FLUENT_ELASTICSEARCH_RECONNECT_ON_ERROR'] || 'true'}"
  reload_on_failure "#{ENV['FLUENT_ELASTICSEARCH_RELOAD_ON_FAILURE'] || 'true'}"
  log_es_400_reason "#{ENV['FLUENT_ELASTICSEARCH_LOG_ES_400_REASON'] || 'false'}"
  logstash_prefix "#{ENV['FLUENT_ELASTICSEARCH_LOGSTASH_PREFIX'] || 'logstash'}"
  logstash_dateformat "#{ENV['FLUENT_ELASTICSEARCH_LOGSTASH_DATEFORMAT'] || '%Y.%m.%d'}"
  logstash_format "#{ENV['FLUENT_ELASTICSEARCH_LOGSTASH_FORMAT'] || 'true'}"
  index_name "#{ENV['FLUENT_ELASTICSEARCH_LOGSTASH_INDEX_NAME'] || 'logstash'}"
  target_index_key "#{ENV['FLUENT_ELASTICSEARCH_TARGET_INDEX_KEY'] || use_nil}"
  type_name "#{ENV['FLUENT_ELASTICSEARCH_LOGSTASH_TYPE_NAME'] || 'fluentd'}"
  include_timestamp "#{ENV['FLUENT_ELASTICSEARCH_INCLUDE_TIMESTAMP'] || 'false'}"
  template_name "#{ENV['FLUENT_ELASTICSEARCH_TEMPLATE_NAME'] || use_nil}"
  template_file "#{ENV['FLUENT_ELASTICSEARCH_TEMPLATE_FILE'] || use_nil}"
  template_overwrite "#{ENV['FLUENT_ELASTICSEARCH_TEMPLATE_OVERWRITE'] || use_default}"
  sniffer_class_name "#{ENV['FLUENT_SNIFFER_CLASS_NAME'] || 'Fluent::Plugin::ElasticsearchSimpleSniffer'}"
  request_timeout "#{ENV['FLUENT_ELASTICSEARCH_REQUEST_TIMEOUT'] || '5s'}"
  suppress_type_name "#{ENV['FLUENT_ELASTICSEARCH_SUPPRESS_TYPE_NAME'] || 'true'}"
  enable_ilm "#{ENV['FLUENT_ELASTICSEARCH_ENABLE_ILM'] || 'false'}"
  ilm_policy_id "#{ENV['FLUENT_ELASTICSEARCH_ILM_POLICY_ID'] || use_default}"
  ilm_policy "#{ENV['FLUENT_ELASTICSEARCH_ILM_POLICY'] || use_default}"
  ilm_policy_overwrite "#{ENV['FLUENT_ELASTICSEARCH_ILM_POLICY_OVERWRITE'] || 'false'}"
  <buffer>
    flush_thread_count "#{ENV['FLUENT_ELASTICSEARCH_BUFFER_FLUSH_THREAD_COUNT'] || '8'}"
    flush_interval "#{ENV['FLUENT_ELASTICSEARCH_BUFFER_FLUSH_INTERVAL'] || '1s'}"
    chunk_limit_size "#{ENV['FLUENT_ELASTICSEARCH_BUFFER_CHUNK_LIMIT_SIZE'] || '6M'}"
    queue_limit_length "#{ENV['FLUENT_ELASTICSEARCH_BUFFER_QUEUE_LIMIT_LENGTH'] || '32'}"
    retry_max_interval "#{ENV['FLUENT_ELASTICSEARCH_BUFFER_RETRY_MAX_INTERVAL'] || '30'}"
    retry_forever true
  </buffer>
</match>

Your Error Log

2024-02-27 22:41:28 +0000 [warn]: #0 no patterns matched tag="kubernetes.var.log.containers.fluentd-mmslx_kube-system_fluentd-cb6cda03e3dddeffd0f5ae8932bc6b60991716e544dd48549f8a7aaa1657ad1d.log"
free(): invalid pointer
2024-02-27 22:41:28 +0000 [error]: Worker 0 exited unexpectedly with signal SIGABRT
2024-02-27 22:41:29 +0000 [info]: #0 init worker0 logger path=nil rotate_age=nil rotate_size=nil
2024-02-27 22:41:29 +0000 [info]: adding match in @FLUENT_LOG pattern="fluent.**" type="null"
2024-02-27 22:41:29 +0000 [info]: adding match in @ERROR pattern="**" type="null"
2024-02-27 22:41:29 +0000 [info]: adding filter pattern="kubernetes.var.log.containers.**----**.log kubernetes.var.log.containers.----**.log kubernetes.var.log.containers.-----**.log kubernetes.var.log.containers.mono-**.log" type="kubernetes_metadata"
2024-02-27 22:41:30 +0000 [info]: adding filter pattern="kubernetes.var.log.containers.**----**.log" type="parser"
2024-02-27 22:41:30 +0000 [info]: adding filter pattern="kubernetes.var.log.containers.**----**.log kubernetes.var.log.containers.customer-insights**.log kubernetes.var.log.containers.-----**.log kubernetes.var.log.containers.-----**.log" type="parser"
2024-02-27 22:41:30 +0000 [info]: adding match pattern="kubernetes.var.log.containers.**----**.log kubernetes.var.log.containers.----**.log kubernetes.var.log.containers.-----**.log kubernetes.var.log.containers.-----**.log" type="elasticsearch"
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'host localhost' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'host: localhost' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'index_name logstash' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'index_name: logstash' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'template_name ' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'template_name: ' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'logstash_prefix k8s_test' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'logstash_prefix: k8s_test' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'logstash_dateformat %Y.%m.%d' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'logstash_dateformat: %Y.%m.%d' has timestamp placeholders, but chunk key 'time' is not configured
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'logstash_dateformat %Y.%m.%d' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'logstash_dateformat: %Y.%m.%d' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'deflector_alias ' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'deflector_alias: ' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'application_name default' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'application_name: default' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'ilm_policy_id logstash-policy' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'ilm_policy_id: logstash-policy' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] Need substitution: false
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] 'host_placeholder localhost' is tested built-in placeholder(s) but there is no valid placeholder(s). error: Parameter 'host_placeholder: localhost' doesn't have tag placeholder
2024-02-27 22:41:30 +0000 [info]: adding source type="systemd"
2024-02-27 22:41:30 +0000 [info]: adding source type="systemd"
2024-02-27 22:41:30 +0000 [info]: adding source type="systemd"
2024-02-27 22:41:30 +0000 [info]: adding source type="prometheus"
2024-02-27 22:41:30 +0000 [info]: adding source type="prometheus_output_monitor"
2024-02-27 22:41:30 +0000 [info]: adding source type="tail"
2024-02-27 22:41:30 +0000 [info]: #0 starting fluentd worker pid=5673 ppid=7 worker=0
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] buffer started instance=2380 stage_size=0 queue_size=0
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] flush_thread actually running
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] flush_thread actually running
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] flush_thread actually running
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] flush_thread actually running
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] flush_thread actually running
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/aws-node-hn6rp_kube-system_aws-node-fdf6554cbb884b7b86afb744c78d69c70a1d3dc821e1564ff27dfd9b9.log
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] flush_thread actually running
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] flush_thread actually running
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] flush_thread actually running
2024-02-27 22:41:30 +0000 [debug]: #0 [out_es] enqueue_thread actually running
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/aws-node-hn6rp_kube-system_aws-vpc-cni-init-1f72b17e3b976fc6a1d4a602766f86d66a099d2c513326b5863eed200597c190.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/coredns-867c6c88f7-sz86h_kube-system_coredns-2c6932efa35faabbfa4febf1f757de07e227c77d445bceb4f12d685535297f94.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/-----86d8cb7cc8-h5bhg_production_----112b19f1842c6c6bf0f24600d409bd04a817a5bc46128b5bab4040bb080b0e03.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/datadog-nh5rp_default_agent-806602e5eaa936d1eafac6d226ac5b862187a6681f5dee002992b5e02f172d97.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/datadog-nh5rp_default_init-config-1991f45a20d8658c04f0bcf888810d9753340f663d6ac20176ad054c258245c7.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/datadog-nh5rp_default_init-volume-a3a91a21c99f73b996cfe429f51f7753dd4d86256fe63793f871ef0e11bda0a6.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/datadog-nh5rp_default_process-agent-5c39e03c20b2f2c89f4e7cdc80ebd1a1e182fa3e91b4e567f73ec066d5acb6c5.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/datadog-nh5rp_default_trace-agent-b38f19a4c516387d5b963ac41be2c0021eebd521ff373e25906556a12593d241.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/ebs-csi-node-j2xpl_kube-system_ebs-plugin-a60ffdc9990e7e3b8f76d5630b4bc67431ca6bf3167fe21a67da9a6ea0c4642a.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/ebs-csi-node-j2xpl_kube-system_liveness-probe-397b00b61201e9a6c657c1d0fcb86f24c328bdf05f216e403876563dce2c7cd6.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/ebs-csi-node-j2xpl_kube-system_node-driver-registrar-4a995c4d4618928a22df0d780dbdd4789b567b07762b02a5a9b1f0ef9ed605d0.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/fluentd-mmslx_kube-system_fluentd-cb6cda03e3dddeffd0f5ae8932bc6b60991716e544dd48549f8a7aaa1657ad1d.log
2024-02-27 22:41:30 +0000 [warn]: #0 no patterns matched tag="kubernetes.var.log.containers.fluentd-mmslx_kube-system_fluentd-cb6cda03e3dddeffd0f5ae8932bc6b60991716e544dd48549f8a7aaa1657ad1d.log"
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/ingress-nginx-controller-68bf6f97f8-fmzvc_ingress-nginx_controller-e3313fe55f5d00f0ff1f6cb42063766eb1ec7de182d0396c642f2c9f0d900a63.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/kube-proxy-gtlbz_kube-system_kube-proxy-f5569c3d4daebd12ddb1a1d19dc40a464bfe5e9679526a7955c4980e2b8867db.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/metabase-8794dbff-6fdss_metabase_metabase-22045c511479498f0047b2834ef80f131263b7fcf76c56465b8f0ba776db7d1d.log
2024-02-27 22:41:30 +0000 [warn]: #0 no patterns matched tag="kubernetes.var.log.containers.metabase-8794dbff-6fdss_metabase_metabase-22045c511479498f0047b2834ef80f131263b7fcf76c56465b8f0ba776db7d1d.log"
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/-----59549f6c8-b8s6g_production_mongodb-22d35052f44b57e86f9f76a592cc22ef310b5383e63337d23cd7b8a499d858ef.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/-----569bcc575b-6hj78_pre-production_-----2edebf4dee033b76138a1079a24919e5e932f991153c23b94724b211f4c87a81.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/-----55bdd5685b-pbsh4_production_---------cad4cdc7bc10ad9656639a6ac3876923923d535e24cfbe29f941e9751c08ea99.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/----i-75cbc9968f-dqpbg_production_----542e3a83acc70f82dbbb7233d391c6cb8ea49a3782b768015e6efb2a9bc82378.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/prometheus-prometheus-kube-prometheus-prometheus-0_monitoring_config-reloader-6430be63a516cbbe42929c702ff7a59b8e58213b2e85b72bb0d9a4e0643a77b2.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/prometheus-prometheus-kube-prometheus-prometheus-0_monitoring_init-config-reloader-1f8ae540ab86ccee67986b064fe4a6de552e4721a8b48af657be3d7ab9f5a0a6.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/prometheus-prometheus-kube-prometheus-prometheus-0_monitoring_prometheus-5789d16f8781ca6a13a735ea5f6934b0e82d555f18b371231b59d74d50273b17.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/prometheus-prometheus-node-exporter-kmr8c_monitoring_node-exporter-4e1ecf0fb558ec4d9d9889040dfa77ffa807397c15683a4399838716376c7b74.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/redis-master-0_pre-production_redis-56ae5b94f96bc40e048b06452a63f0a135b6cde1a08d84e206d1affaa0d99e6c.log
2024-02-27 22:41:30 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/redis-master-0_production_redis-cae8d648741fc4735117e80b888d7811d3b4dfab7b3bee002daefefdea31a1a4.log
2024-02-27 22:41:30 +0000 [info]: #0 fluentd worker is now running worker=0
2024-02-27 22:41:31 +0000 [warn]: #0 no patterns matched tag="kubelet"
2024-02-28 01:16:53 +0000 [info]: [filter_kube_metadata] 410 Gone encountered. Restarting pod watch to reset resource versions.410 Gone
2024-02-28 04:18:06 +0000 [info]: [filter_kube_metadata] 410 Gone encountered. Restarting pod watch to reset resource versions.410 Gone
2024-02-28 08:22:20 +0000 [info]: [filter_kube_metadata] 410 Gone encountered. Restarting pod watch to reset resource versions.410 Gone
2024-02-29 01:46:35 +0000 [info]: [filter_kube_metadata] 410 Gone encountered. Restarting pod watch to reset resource versions.410 Gone

Additional context

kubernetes-fluentd-conf

AUTOMATICALLY GENERATED

DO NOT EDIT THIS FILE DIRECTLY, USE /templates/conf/kubernetes.conf.erb

<label @FLUENT_LOG>
<match fluent.**>
@type null
@id ignore_fluent_logs

@type tail @id in_tail_container_logs path /var/log/containers/*.log pos_file /var/log/fluentd-containers.log.pos tag "#{ENV['FLUENT_CONTAINER_TAIL_TAG'] || 'kubernetes.*'}" exclude_path "#{ENV['FLUENT_CONTAINER_TAIL_EXCLUDE_PATH'] || use_default}" read_from_head true # # @type json # time_type string # @type multi_format format regexp time_format %Y-%m-%dT%H:%M:%S.%N%Z expression /^(?.+) (?stdout|stderr)( (?.))? (?.*)$/

<filter kubernetes.var.log.containers.----.log kubernetes.var.log.containers.----.log kubernetes.var.log.containers.-----.log kubernetes.var.log.containers.-----**.log>
@type kubernetes_metadata
@id filter_kube_metadata
kubernetes_url "#{ENV['FLUENT_FILTER_KUBERNETES_URL'] || 'https://' + ENV.fetch('KUBERNETES_SERVICE_HOST') + ':' + ENV.fetch('KUBERNETES_SERVICE_PORT') + '/api'}"
verify_ssl "#{ENV['KUBERNETES_VERIFY_SSL'] || true}"
ca_file "#{ENV['KUBERNETES_CA_FILE']}"
skip_labels "#{ENV['FLUENT_KUBERNETES_METADATA_SKIP_LABELS'] || 'false'}"
skip_container_metadata "#{ENV['FLUENT_KUBERNETES_METADATA_SKIP_CONTAINER_METADATA'] || 'false'}"
skip_master_url "#{ENV['FLUENT_KUBERNETES_METADATA_SKIP_MASTER_URL'] || 'false'}"
skip_namespace_metadata "#{ENV['FLUENT_KUBERNETES_METADATA_SKIP_NAMESPACE_METADATA'] || 'false'}"
watch "#{ENV['FLUENT_KUBERNETES_WATCH'] || 'true'}"
@Alisher-Nabiev
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full fluentd pod log
fluentd-prod.log

@CAR6807
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CAR6807 commented Apr 4, 2024

Also seeing this in
fluent/fluentd-kubernetes-daemonset:v1.16.5-debian-forward-1.0 image

logging fails

2024-04-03 20:27:34 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/node-problem-detector-kwwk8_kube-system_node-problem-detector-4e2796e4c3ca14953fda355aca52c0200a0f53b7b0596d7e94ec89169c782f8a.log
2024-04-03 20:27:34 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/unbound-exporter-llm48_unbound_unbound-exporter-bd636614623be73dc03069f9a0fefffb779c47d2c034e796d3364fb49fb2e6fe.log
2024-04-03 20:27:34 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/unbound-exporter-llm48_unbound_unbound-exporter-init-1b88c92fa871c07c66d558a84a656879a1b13dfa12c6b533b37ec9ae74fc555f.log
2024-04-03 20:27:34 +0000 [info]: #0 fluentd worker is now running worker=0
free(): invalid pointer
2024-04-03 20:27:37 +0000 [error]: Worker 0 exited unexpectedly with signal SIGABRT
2024-04-03 20:27:37 +0000 [info]: #0 init worker0 logger path=nil rotate_age=nil rotate_size=nil

@Alisher-Nabiev
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Also seeing this in fluent/fluentd-kubernetes-daemonset:v1.16.5-debian-forward-1.0 image

logging fails

2024-04-03 20:27:34 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/node-problem-detector-kwwk8_kube-system_node-problem-detector-4e2796e4c3ca14953fda355aca52c0200a0f53b7b0596d7e94ec89169c782f8a.log
2024-04-03 20:27:34 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/unbound-exporter-llm48_unbound_unbound-exporter-bd636614623be73dc03069f9a0fefffb779c47d2c034e796d3364fb49fb2e6fe.log
2024-04-03 20:27:34 +0000 [info]: #0 [in_tail_container_logs] following tail of /var/log/containers/unbound-exporter-llm48_unbound_unbound-exporter-init-1b88c92fa871c07c66d558a84a656879a1b13dfa12c6b533b37ec9ae74fc555f.log
2024-04-03 20:27:34 +0000 [info]: #0 fluentd worker is now running worker=0
free(): invalid pointer
2024-04-03 20:27:37 +0000 [error]: Worker 0 exited unexpectedly with signal SIGABRT
2024-04-03 20:27:37 +0000 [info]: #0 init worker0 logger path=nil rotate_age=nil rotate_size=nil

try to downgrade the version to 1.15

@jcrood
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jcrood commented Apr 22, 2024

I ran into the same issue and found out that it's the result of the systemd plugin in combination with libjemalloc. Disabliing the latter will fix the problem. As I already build custom containers for the daemonset, I simply added ENV LD_PRELOAD= to the Dockerfile to fix this. See fluent/fluent-package-builder#369

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