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# A headless service to create DNS records.
apiVersion: v1
kind: Service
metadata:
name: {{ template "hdfs-k8s.journalnode.fullname" . }}
labels:
app: {{ template "hdfs-k8s.journalnode.name" . }}
chart: {{ template "hdfs-k8s.subchart" . }}
release: {{ .Release.Name }}
annotations:
# TODO: Deprecated. Replace tolerate-unready-endpoints with
# v1.Service.PublishNotReadyAddresses.
service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
spec:
ports:
- port: 8485
name: jn
- port: 8480
name: http
clusterIP: None
selector:
app: {{ template "hdfs-k8s.journalnode.name" . }}
release: {{ .Release.Name }}
---
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
name: {{ template "hdfs-k8s.journalnode.fullname" . }}
labels:
app: {{ template "hdfs-k8s.journalnode.name" . }}
chart: {{ template "hdfs-k8s.subchart" . }}
release: {{ .Release.Name }}
spec:
selector:
matchLabels:
app: {{ template "hdfs-k8s.journalnode.name" . }}
release: {{ .Release.Name }}
minAvailable: {{ div .Values.global.journalnodeQuorumSize 2 | add1 }}
---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
name: {{ template "hdfs-k8s.journalnode.fullname" . }}
labels:
app: {{ template "hdfs-k8s.journalnode.name" . }}
chart: {{ template "hdfs-k8s.subchart" . }}
release: {{ .Release.Name }}
spec:
serviceName: {{ template "hdfs-k8s.journalnode.fullname" . }}
replicas: {{ .Values.global.journalnodeQuorumSize }}
template:
metadata:
labels:
app: {{ template "hdfs-k8s.journalnode.name" . }}
release: {{ .Release.Name }}
{{- if .Values.podAnnotations }}
annotations:
{{ toYaml .Values.podAnnotations | indent 8 }}
{{- end }}
spec:
{{- if .Values.affinity }}
affinity:
{{ toYaml .Values.affinity | indent 8 }}
{{- else if .Values.global.defaultAffinityEnabled }}
affinity:
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: "app"
operator: In
values:
- {{ template "hdfs-k8s.journalnode.name" . }}
- key: "release"
operator: In
values:
- {{ .Release.Name }}
topologyKey: "kubernetes.io/hostname"
{{- end }}
{{- if .Values.nodeSelector }}
nodeSelector:
{{ toYaml .Values.nodeSelector | indent 8 }}
{{- end }}
{{- if .Values.tolerations }}
tolerations:
{{ toYaml .Values.tolerations | indent 8 }}
{{- end }}
containers:
- name: hdfs-journalnode
image: uhopper/hadoop-namenode:2.7.2
env:
- name: HADOOP_CUSTOM_CONF_DIR
value: /etc/hadoop-custom-conf
command: ["/entrypoint.sh"]
args: ["/opt/hadoop-2.7.2/bin/hdfs", "--config", "/etc/hadoop", "journalnode"]
ports:
- containerPort: 8485
name: jn
- containerPort: 8480
name: http
volumeMounts:
# Mount a subpath of the volume so that the journal subdir would be
# a brand new empty dir. This way, we won't get affected by
# existing files in the volume top dir.
- name: editdir
mountPath: /hadoop/dfs/journal
subPath: journal
- name: editdir
mountPath: /hadoop/dfs/name
subPath: name
- name: hdfs-config
mountPath: /etc/hadoop-custom-conf
readOnly: true
{{- if .Values.global.kerberosEnabled }}
- name: kerberos-config
mountPath: /etc/krb5.conf
subPath: {{ .Values.global.kerberosConfigFileName }}
readOnly: true
- name: kerberos-keytab-copy
mountPath: /etc/security/
readOnly: true
{{- end }}
{{- if .Values.global.kerberosEnabled }}
initContainers:
- name: copy-kerberos-keytab
image: busybox:1.27.1
command: ['sh', '-c']
args:
- cp /kerberos-keytabs/${MY_KERBEROS_NAME}*.keytab /kerberos-keytab-copy/hdfs.keytab
env:
- name: MY_KERBEROS_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
volumeMounts:
- name: kerberos-keytabs
mountPath: /kerberos-keytabs
- name: kerberos-keytab-copy
mountPath: /kerberos-keytab-copy
{{- end }}
restartPolicy: Always
volumes:
- name: hdfs-config
configMap:
name: {{ template "hdfs-k8s.config.fullname" . }}
{{- if .Values.global.kerberosEnabled }}
- name: kerberos-config
configMap:
name: {{ template "krb5-configmap" . }}
- name: kerberos-keytabs
secret:
secretName: {{ template "krb5-keytabs-secret" . }}
- name: kerberos-keytab-copy
emptyDir: {}
{{- end }}
{{- if .Values.global.podSecurityContext.enabled }}
securityContext:
runAsUser: {{ .Values.global.podSecurityContext.runAsUser }}
fsGroup: {{ .Values.global.podSecurityContext.fsGroup }}
{{- end }}
volumeClaimTemplates:
- metadata:
name: editdir
spec:
accessModes:
- {{ .Values.persistence.accessMode | quote }}
resources:
requests:
storage: {{ .Values.persistence.size | quote }}
{{- if .Values.persistence.storageClass }}
{{- if (eq "-" .Values.persistence.storageClass) }}
storageClassName: ""
{{- else }}
storageClassName: "{{ .Values.persistence.storageClass }}"
{{- end }}
{{- end }}
{{- if .Values.persistence.selector }}
selector:
{{ toYaml .Values.persistence.selector | indent 10 }}
{{- end }}
|
