KubeZero/charts/kubezero-logging

kubezero-logging

KubeZero Umbrella Chart for complete EFK stack

Current chart version is 0.3.6

Source code can be found here

Chart Requirements

Repository	Name	Version
https://kubernetes-charts.storage.googleapis.com/	fluentd	2.5.1
https://zero-down-time.github.io/kubezero/	fluent-bit	0.7.2
https://zero-down-time.github.io/kubezero/	kubezero-lib	>= 0.1.3

Changes from upstream

ECK

• Operator mapped to controller nodes

ES

• SSL disabled ( Todo: provide cluster certs and setup Kibana/Fluentd to use https incl. client certs )

• Installed Plugins:

  • repository-s3
  • elasticsearch-prometheus-exporter

• Cross AZ Zone awareness is implemented via nodeSets

Kibana

• increased timeout to ES to 3 minutes

FluentD

Fluent-bit

• support for dedot Lua filter to replace "." with "_" for all annotations and labels
• support for api audit log

Manual tasks ATM

• install index template
• setup Kibana
• create logstash-* Index Pattern

Chart Values

Key	Type	Default	Description
elastic_password	string	""
es.nodeSets	list	[]
es.prometheus	bool	false
es.s3Snapshot.enabled	bool	false
es.s3Snapshot.iamrole	string	""
fluent-bit.config.filters	string	"[FILTER]\n Name lua\n Match kube.*\n script /fluent-bit/etc/functions.lua\n call reassemble_cri_logs\n\n[FILTER]\n Name kubernetes\n Match kube.*\n Merge_Log On\n Keep_Log Off\n K8S-Logging.Parser On\n K8S-Logging.Exclude On\n\n[FILTER]\n Name lua\n Match kube.*\n script /fluent-bit/etc/functions.lua\n call dedot\n"
fluent-bit.config.inputs	string	"[INPUT]\n Name tail\n Path /var/log/containers/*.log\n Parser cri\n Tag kube.*\n Mem_Buf_Limit 5MB\n Skip_Long_Lines On\n Refresh_Interval 10\n DB /var/log/flb_kube.db\n DB.Sync Normal\n[INPUT]\n Name tail\n Path /var/log/kubernetes/audit.log\n Parser json\n Tag audit.api-server\n Mem_Buf_Limit 5MB\n Skip_Long_Lines On\n Refresh_Interval 60\n DB /var/log/flb_kube_audit.db\n DB.Sync Normal\n"
fluent-bit.config.lua	string	"function dedot(tag, timestamp, record)\n if record[\"kubernetes\"] == nil then\n return 0, 0, 0\n end\n dedot_keys(record[\"kubernetes\"][\"annotations\"])\n dedot_keys(record[\"kubernetes\"][\"labels\"])\n return 1, timestamp, record\nend\n\nfunction dedot_keys(map)\n if map == nil then\n return\n end\n local new_map = {}\n local changed_keys = {}\n for k, v in pairs(map) do\n local dedotted = string.gsub(k, \"%.\", \"_\")\n if dedotted ~= k then\n new_map[dedotted] = v\n changed_keys[k] = true\n end\n end\n for k in pairs(changed_keys) do\n map[k] = nil\n end\n for k, v in pairs(new_map) do\n map[k] = v\n end\nend\n\nlocal reassemble_state = {}\n\nfunction reassemble_cri_logs(tag, timestamp, record)\n -- IMPORTANT: reassemble_key must be unique for each parser stream\n -- otherwise entries from different sources will get mixed up.\n -- Either make sure that your parser tags satisfy this or construct\n -- reassemble_key some other way\n local reassemble_key = tag\n -- if partial line, accumulate\n if record.logtag == 'P' then\n reassemble_state[reassemble_key] = reassemble_state[reassemble_key] or \"\" .. record.message\n return -1, 0, 0\n end\n -- otherwise it's a full line, concatenate with accumulated partial lines if any\n record.message = reassemble_state[reassemble_key] or \"\" .. (record.message or \"\")\n reassemble_state[reassemble_key] = nil\n return 1, timestamp, record\nend\n"
fluent-bit.config.outputs	string	"[OUTPUT]\n Match *\n Name forward\n Host logging-fluentd\n Port 24224\n tls on\n tls.verify off\n Shared_Key cloudbender\n"
fluent-bit.config.service	string	"[SERVICE]\n Flush 5\n Daemon Off\n Log_Level warn\n Parsers_File parsers.conf\n Parsers_File custom_parsers.conf\n HTTP_Server On\n HTTP_Listen 0.0.0.0\n HTTP_Port 2020\n"
fluent-bit.enabled	bool	false
fluent-bit.serviceMonitor.enabled	bool	true
fluent-bit.serviceMonitor.namespace	string	"monitoring"
fluent-bit.serviceMonitor.selector.release	string	"metrics"
fluent-bit.test.enabled	bool	false
fluent-bit.tolerations[0].effect	string	"NoSchedule"
fluent-bit.tolerations[0].key	string	"node-role.kubernetes.io/master"
fluentd.configMaps."filter.conf"	string	"<filter kube.**>\n @type parser\n key_name message\n remove_key_name_field true\n reserve_data true\n emit_invalid_record_to_error false\n <parse>\n @type json\n </parse>\n</filter>\n"
fluentd.configMaps."forward-input.conf"	string	"<source>\n @type forward\n port 24224\n bind 0.0.0.0\n skip_invalid_event true\n <transport tls>\n cert_path /mnt/fluentd-certs/tls.crt\n private_key_path /mnt/fluentd-certs/tls.key\n </transport>\n <security>\n self_hostname \"#{ENV['HOSTNAME']}\"\n shared_key \"#{ENV['FLUENTD_SHARED_KEY']}\"\n </security>\n</source>\n"
fluentd.configMaps."output.conf"	string	"<match **>\n @id elasticsearch\n @type elasticsearch\n @log_level info\n include_tag_key true\n id_key id\n remove_keys id\n\n # KubeZero pipeline incl. GeoIP etc.\n # Freaking ES jams under load and all is lost ...\n # pipeline fluentd\n\n host \"#{ENV['OUTPUT_HOST']}\"\n port \"#{ENV['OUTPUT_PORT']}\"\n scheme \"#{ENV['OUTPUT_SCHEME']}\"\n ssl_version \"#{ENV['OUTPUT_SSL_VERSION']}\"\n ssl_verify \"#{ENV['OUTPUT_SSL_VERIFY']}\"\n user \"#{ENV['OUTPUT_USER']}\"\n password \"#{ENV['OUTPUT_PASSWORD']}\"\n\n log_es_400_reason\n logstash_format true\n reconnect_on_error true\n # reload_on_failure true\n request_timeout 15s\n suppress_type_name true\n\n <buffer>\n @type file\n path /var/log/fluentd-buffers/kubernetes.system.buffer\n flush_mode interval\n flush_thread_count 2\n flush_interval 30s\n flush_at_shutdown true\n retry_type exponential_backoff\n retry_timeout 60m\n chunk_limit_size 16M\n overflow_action drop_oldest_chunk\n </buffer>\n</match>\n"
fluentd.enabled	bool	false
fluentd.env.OUTPUT_SSL_VERIFY	string	"false"
fluentd.env.OUTPUT_USER	string	"elastic"
fluentd.extraEnvVars[0].name	string	"OUTPUT_PASSWORD"
fluentd.extraEnvVars[0].valueFrom.secretKeyRef.key	string	"elastic"
fluentd.extraEnvVars[0].valueFrom.secretKeyRef.name	string	"logging-es-elastic-user"
fluentd.extraEnvVars[1].name	string	"FLUENTD_SHARED_KEY"
fluentd.extraEnvVars[1].valueFrom.secretKeyRef.key	string	"shared_key"
fluentd.extraEnvVars[1].valueFrom.secretKeyRef.name	string	"logging-fluentd-secret"
fluentd.extraVolumeMounts[0].mountPath	string	"/mnt/fluentd-certs"
fluentd.extraVolumeMounts[0].name	string	"fluentd-certs"
fluentd.extraVolumeMounts[0].readOnly	bool	true
fluentd.extraVolumes[0].name	string	"fluentd-certs"
fluentd.extraVolumes[0].secret.secretName	string	"fluentd-certificate"
fluentd.image.repository	string	"quay.io/fluentd_elasticsearch/fluentd"
fluentd.image.tag	string	"v3.0.4"
fluentd.istio.enabled	bool	false
fluentd.metrics.enabled	bool	false
fluentd.metrics.serviceMonitor.additionalLabels.release	string	"metrics"
fluentd.metrics.serviceMonitor.enabled	bool	true
fluentd.metrics.serviceMonitor.namespace	string	"monitoring"
fluentd.output.host	string	"logging-es-http"
fluentd.plugins.enabled	bool	false
fluentd.plugins.pluginsList	string	nil
fluentd.replicaCount	int	2
fluentd.service.ports[0].containerPort	int	24224
fluentd.service.ports[0].name	string	"tcp-forward"
fluentd.service.ports[0].protocol	string	"TCP"
fluentd.service.ports[1].containerPort	int	9880
fluentd.service.ports[1].name	string	"http-fluentd"
fluentd.service.ports[1].protocol	string	"TCP"
fluentd.shared_key	string	"cloudbender"
kibana.count	int	1
kibana.istio.enabled	bool	false
kibana.istio.gateway	string	"istio-system/ingressgateway"
kibana.istio.url	string	""
version	string	"7.8.1"

Resources:

• https://www.elastic.co/downloads/elastic-cloud-kubernetes
• https://github.com/elastic/cloud-on-k8s
• https://grafana.com/grafana/dashboards/7752