A cluster lifecycle orchestrator for Airship.
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# Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
#
# 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.
{{- if .Values.manifests.statefulset_airflow_worker }}
{{- $envAll := . }}
{{- $serviceAccountName := "airflow-worker" }}
{{ tuple $envAll "airflow_server" $serviceAccountName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
name: airflow-worker-runner
rules:
- apiGroups:
- ""
resources:
- endpoints
- nodes
- nodes/proxy
- pods
- pods/log
- services
verbs:
- delete
- get
- list
- watch
- apiGroups:
- ""
resources:
- configmaps
verbs:
- create
- patch
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: run-airflow-worker
subjects:
- kind: ServiceAccount
name: {{ $serviceAccountName }}
namespace: {{ .Release.Namespace }}
roleRef:
kind: ClusterRole
name: airflow-worker-runner
apiGroup: rbac.authorization.k8s.io
---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
name: airflow-worker
annotations:
{{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
spec:
serviceName: {{ tuple "airflow_worker" "discovery" $envAll | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
podManagementPolicy: "Parallel"
# NOTE: We are using 'OnDelete' strategy instead of 'RollingUpdate'
# so that the upgrade of airflow worker will only start after the
# completion of the 'update_site' workflow (the worker pods will get
# deleted by the workflow at the very end, after everything is completed).
# This will ensure availability of airflow worker during update/upgrade
# and prevent any disruption to the workflow.
updateStrategy:
type: OnDelete
replicas: {{ .Values.pod.replicas.airflow.worker }}
template:
metadata:
labels:
{{ tuple $envAll "airflow" "worker" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
annotations:
{{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" | indent 8 }}
spec:
serviceAccountName: {{ $serviceAccountName }}
affinity:
{{ tuple $envAll "airflow" "worker" | include "helm-toolkit.snippets.kubernetes_pod_anti_affinity" | indent 8 }}
nodeSelector:
{{ .Values.labels.airflow.node_selector_key }}: {{ .Values.labels.airflow.node_selector_value }}
initContainers:
{{ tuple $envAll "airflow_server" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
- name: worker-perms
image: {{ .Values.images.tags.airflow }}
imagePullPolicy: {{ .Values.images.pull_policy }}
securityContext:
runAsUser: 0
{{ tuple $envAll $envAll.Values.pod.resources.airflow.worker | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
command:
- chown
- -R
- "airflow:airflow"
- {{ .Values.conf.airflow.core.base_log_folder }}
volumeMounts:
- name: airflow-logs
mountPath: {{ .Values.conf.airflow.core.base_log_folder }}
containers:
- name: airflow-scheduler
image: {{ .Values.images.tags.airflow }}
imagePullPolicy: {{ .Values.images.pull_policy }}
{{ tuple $envAll $envAll.Values.pod.resources.airflow.scheduler | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
env:
- name: AIRFLOW_CONN_AIRFLOWS_OWN_DB
valueFrom:
secretKeyRef:
name: {{ .Values.secrets.postgresql_airflow_db.user }}
key: AIRFLOW_DATABASE_URI
# Set to -1 to stop scheduler from going into crash loops
args: ["scheduler", "-n", "-1" ]
volumeMounts:
- name: airflow-etc
mountPath: {{ .Values.conf.airflow_config_file.path }}
subPath: airflow.cfg
readOnly: true
- name: shipyard-etc
mountPath: /usr/local/airflow/plugins/shipyard.conf
subPath: shipyard.conf
readOnly: true
- name: airflow-logs
mountPath: {{ .Values.conf.airflow.core.base_log_folder }}
- name: airflow-worker
image: {{ .Values.images.tags.airflow }}
imagePullPolicy: {{ .Values.images.pull_policy }}
{{ tuple $envAll $envAll.Values.pod.resources.airflow.worker | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
env:
- name: AIRFLOW_CONN_AIRFLOWS_OWN_DB
valueFrom:
secretKeyRef:
name: {{ .Values.secrets.postgresql_airflow_db.user }}
key: AIRFLOW_DATABASE_URI
ports:
- containerPort: {{ tuple "airflow_worker" "internal" "airflow_worker" $envAll | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
args: ["worker"]
readinessProbe:
tcpSocket:
port: {{ .Values.network.airflow.worker.port }}
volumeMounts:
- name: airflow-etc
mountPath: {{ .Values.conf.airflow_config_file.path }}
subPath: airflow.cfg
readOnly: true
- name: shipyard-etc
mountPath: /usr/local/airflow/plugins/shipyard.conf
subPath: shipyard.conf
readOnly: true
- name: airflow-logs
mountPath: {{ .Values.conf.airflow.core.base_log_folder }}
- name: airflow-logrotate
image: {{ .Values.images.tags.airflow }}
imagePullPolicy: {{ .Values.images.pull_policy }}
{{ tuple $envAll $envAll.Values.pod.resources.airflow.logrotate | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
env:
- name: PERCENT_MAX_LOG_FS_USAGE
value: {{ .Values.logrotate.percent_max_log_fs_usage | quote }}
- name: DAYS_BEFORE_LOG_DELETION
value: {{ .Values.logrotate.days_before_deletion | quote }}
- name: LOGROTATE_PATH
value: {{ .Values.conf.airflow.core.base_log_folder }}
- name: LOGROTATE_ENABLED
value: "enabled"
readinessProbe:
exec:
command:
- sh
- -c
- |-
set -ex
ps -ef | grep 'sleep 3600' | grep -v 'grep'
initialDelaySeconds: 15
periodSeconds: 15
volumeMounts:
- name: airflow-logs
mountPath: {{ .Values.conf.airflow.core.base_log_folder }}
volumes:
- name: airflow-etc
projected:
defaultMode: 0444
sources:
- configMap:
name: airflow-etc
items:
- key: airflow.cfg
path: airflow.cfg
- name: shipyard-etc
projected:
defaultMode: 0444
sources:
- configMap:
name: shipyard-etc
items:
- key: shipyard.conf
path: shipyard.conf
- name: airflow-bin
configMap:
name: airflow-bin
defaultMode: 0555
volumeClaimTemplates:
- metadata:
name: airflow-logs
spec:
accessModes: [ "ReadWriteOnce" ]
resources:
requests:
storage: {{ .Values.volume_worker.size }}
storageClassName: {{ .Values.volume_worker.class_name }}
{{- end }}