openstack-helm-infra/fluentd/templates/daemonset.yaml

{{/*
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}

{{- define "probeTemplate" }}
tcpSocket:
  port: {{ tuple "fluentd" "internal" "service" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
{{- end }}

{{- if .Values.manifests.daemonset }}
{{- $envAll := . }}

{{- $config_path := .Values.conf.fluentd.path }}
{{- $mounts_fluentd := .Values.pod.mounts.fluentd.fluentd }}
{{- $prometheus_annotations := $envAll.Values.monitoring.prometheus.fluentd }}

{{- $kafkaBroker := tuple "kafka" "internal" . | include "helm-toolkit.endpoints.hostname_fqdn_endpoint_lookup" }}
{{- $kafkaBrokerPort := tuple "kafka" "internal" "broker" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
{{- $kafkaBrokerURI := printf "%s:%s" $kafkaBroker $kafkaBrokerPort }}

{{- $rcControllerName := printf "%s-%s" $envAll.Release.Name "fluentd"  }}
{{ tuple $envAll "fluentd" $rcControllerName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: {{ $rcControllerName | quote }}
subjects:
  - kind: ServiceAccount
    name: {{ $rcControllerName | quote }}
    namespace: {{ .Release.Namespace }}
roleRef:
  kind: ClusterRole
  name: {{ $rcControllerName | quote }}
  apiGroup: rbac.authorization.k8s.io
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: {{ $rcControllerName | quote }}
rules:
  - apiGroups:
      - ""
    resources:
      - namespaces
      - nodes
      - pods
      - services
      - replicationcontrollers
      - limitranges
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - apps
    resources:
      - statefulsets
      - daemonsets
      - deployments
      - replicasets
    verbs:
      - get
      - list
      - watch
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: {{ $rcControllerName | quote }}
  annotations:
    {{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
  labels:
{{ tuple $envAll "fluentd" "internal" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
spec:
{{ tuple $envAll "fluentd" | include "helm-toolkit.snippets.kubernetes_upgrades_daemonset" | indent 2 }}
  selector:
    matchLabels:
{{ tuple $envAll "fluentd" "internal" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
  template:
    metadata:
      labels:
{{ tuple $envAll "fluentd" "internal" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
      annotations:
{{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" | indent 8 }}
        configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
        configmap-bin-hash: {{ tuple "configmap-bin.yaml" . | include "helm-toolkit.utils.hash" }}
{{- if .Values.monitoring.prometheus.enabled }}
{{ tuple $prometheus_annotations | include "helm-toolkit.snippets.prometheus_pod_annotations" | indent 8 }}
{{- end }}
{{ dict "envAll" $envAll "podName" "fluentd" "containerNames" (list "fluentd" "init") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 8 }}
    spec:
{{ dict "envAll" $envAll "application" "fluentd" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
      serviceAccountName: {{ $rcControllerName | quote }}
{{ if $envAll.Values.pod.tolerations.fluentd.enabled }}
{{ tuple $envAll "fluentd" | include "helm-toolkit.snippets.kubernetes_tolerations" | indent 6 }}
{{ end }}
      nodeSelector:
        {{ .Values.labels.fluentd.node_selector_key }}: {{ .Values.labels.fluentd.node_selector_value | quote }}
      terminationGracePeriodSeconds: {{ .Values.pod.lifecycle.termination_grace_period.fluentd.timeout | default "30" }}
      initContainers:
{{ tuple $envAll "fluentd" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
      containers:
        - name: fluentd
{{ tuple $envAll "fluentd" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.fluentd | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "fluentd" "container" "fluentd" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          command:
            - /tmp/fluentd.sh
            - start
          ports:
            - name: forward
              containerPort: {{ tuple "fluentd" "internal" "service" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
            - name: metrics
              containerPort: {{ tuple "fluentd" "internal" "metrics" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
{{ dict "envAll" . "component" "fluentd" "container" "fluentd" "type" "readiness" "probeTemplate" (include "probeTemplate" . | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | indent 10 }}
{{ dict "envAll" . "component" "fluentd" "container" "fluentd" "type" "liveness" "probeTemplate" (include "probeTemplate" . | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | indent 10 }}
          env:
            - name: NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: FLUENTD_PORT
              value: {{ tuple "fluentd" "internal" "service" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
            - name: ELASTICSEARCH_HOST
              value: {{ tuple "elasticsearch" "internal" . | include "helm-toolkit.endpoints.hostname_fqdn_endpoint_lookup" | quote }}
            - name: ELASTICSEARCH_PORT
              value: {{ tuple "elasticsearch" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
            - name: KAFKA_BROKER
              value: {{ $kafkaBrokerURI }}
{{- if .Values.pod.env.fluentd.vars }}
{{ include "helm-toolkit.utils.to_k8s_env_vars" .Values.pod.env.fluentd.vars | indent 12 }}
{{- end }}
{{- if .Values.pod.env.fluentd.secrets }}
{{ tuple $envAll .Values.pod.env.fluentd.secrets | include "helm-toolkit.utils.to_k8s_env_secret_vars" | indent 12 }}
{{- end }}
            - name: ELASTICSEARCH_USERNAME
              valueFrom:
                secretKeyRef:
                  name: {{ printf "%s-%s" $envAll.Release.Name "elasticsearch-user" | quote }}
                  key: ELASTICSEARCH_USERNAME
            - name: ELASTICSEARCH_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ printf "%s-%s" $envAll.Release.Name "elasticsearch-user" | quote }}
                  key: ELASTICSEARCH_PASSWORD
{{- if .Values.manifests.secret_kafka }}
            - name: KAFKA_USERNAME
              valueFrom:
                secretKeyRef:
                  name: {{ printf "%s-%s" $envAll.Release.Name "kafka-user" | quote }}
                  key: KAFKA_USERNAME
            - name: KAFKA_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ printf "%s-%s" $envAll.Release.Name "kafka-user" | quote }}
                  key: KAFKA_PASSWORD
{{- end }}
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: varlog
              mountPath: /var/log
            - name: varlibdockercontainers
              mountPath: /var/lib/docker/containers
              readOnly: true
            - name: pod-etc-fluentd
              mountPath: /fluentd/etc
            - name: fluentd-etc
              mountPath: {{ printf "%s/%s.conf" $config_path "main" }}
              subPath: {{ printf "%s.conf" "main"}}
              readOnly: true
{{- range $name, $config := .Values.conf.fluentd.conf }}
            - name: fluentd-etc
              mountPath: {{ printf "%s/%s.conf" $config_path $name }}
              subPath: {{ printf "%s.conf" $name }}
              readOnly: true
{{- end }}
            - name: fluentd-bin
              mountPath: /tmp/fluentd.sh
              subPath: fluentd.sh
              readOnly: true
{{ if $mounts_fluentd.volumeMounts }}{{ toYaml $mounts_fluentd.volumeMounts | indent 12 }}{{- end }}
      volumes:
        - name: pod-tmp
          emptyDir: {}
        - name: varlog
          hostPath:
            path: /var/log
        - name: varlibdockercontainers
          hostPath:
            path: /var/lib/docker/containers
        - name: pod-etc-fluentd
          emptyDir: {}
{{ if and (.Values.manifests.secret_fluentd_env) (.Values.pod.env.fluentd.secrets) }}
        - name: {{ printf "%s-%s" $envAll.Release.Name "env-secret" | quote }}
          secret:
            secretName: {{ printf "%s-%s" $envAll.Release.Name "env-secret" | quote }}
            defaultMode: 0444
{{- end }}
        - name: fluentd-etc
          secret:
            secretName: {{ printf "%s-%s" $envAll.Release.Name "fluentd-etc" | quote }}
            defaultMode: 0444
        - name: fluentd-bin
          configMap:
            name: {{ printf "%s-%s" $envAll.Release.Name "fluentd-bin" | quote }}
            defaultMode: 0555
{{ if $mounts_fluentd.volumes }}{{ toYaml $mounts_fluentd.volumes | indent 8 }}{{- end }}
{{- end }}