[AAI] Added Rolling Update Strategy
Addded preStop hook to let long-running tasks be finished
before the SIGTERM is invoked
Issue-ID: AAI-3368
Signed-off-by: Mohammad Hosnidokht <mohammad.hosnidokht@yoppworks.com>
Change-Id: I02cc0068a3588d94b3da9414685e6cd798e9976f
diff --git a/kubernetes/aai/components/aai-resources/templates/deployment.yaml b/kubernetes/aai/components/aai-resources/templates/deployment.yaml
index 501a706..fd4b1c3 100644
--- a/kubernetes/aai/components/aai-resources/templates/deployment.yaml
+++ b/kubernetes/aai/components/aai-resources/templates/deployment.yaml
@@ -29,6 +29,12 @@
heritage: {{ .Release.Service }}
spec:
replicas: {{ .Values.replicaCount }}
+ minReadySeconds: {{ .Values.minReadySeconds }}
+ strategy:
+ type: {{ .Values.updateStrategy.type }}
+ rollingUpdate:
+ maxUnavailable: {{ .Values.updateStrategy.maxUnavailable }}
+ maxSurge: {{ .Values.updateStrategy.maxSurge }}
selector:
matchLabels:
app: {{ include "common.name" . }}
@@ -72,6 +78,7 @@
{{- end }}
spec:
hostname: aai-resources
+ terminationGracePeriodSeconds: {{ .Values.service.terminationGracePeriodSeconds }}
initContainers: {{ include "common.certInitializer.initContainer" . | nindent 6 }}
- name: {{ include "common.name" . }}-readiness
command:
@@ -125,6 +132,10 @@
value: '-Djavax.net.ssl.trustStore={{ .Values.certInitializer.credsPath }}/truststoreONAPall.jks -Djavax.net.ssl.trustStorePassword={{ .Values.certInitializer.truststorePassword }}'
- name: TRUSTORE_ALL_PASSWORD
value: {{ .Values.certInitializer.truststorePassword }}
+ - name: INTERNAL_PORT_1
+ value: {{ .Values.service.internalPort | quote }}
+ - name: INTERNAL_PORT_2
+ value: {{ .Values.service.internalPort2 | quote }}
volumeMounts: {{ include "common.certInitializer.volumeMount" . | nindent 8 }}
- mountPath: /etc/localtime
name: localtime
@@ -173,6 +184,18 @@
ports:
- containerPort: {{ .Values.service.internalPort }}
- containerPort: {{ .Values.service.internalPort2 }}
+ lifecycle:
+ # wait for active requests (long-running tasks) to be finished
+ # Before the SIGTERM is invoked, Kubernetes exposes a preStop hook in the Pod.
+ preStop:
+ exec:
+ command:
+ - sh
+ - -c
+ - |
+ while (netstat -an | grep ESTABLISHED | grep -e $INTERNAL_PORT_1 -e $INTERNAL_PORT_2)
+ do sleep 10
+ done
# disable liveness probe when breakpoints set in debugger
# so K8s doesn't restart unresponsive container
{{- if .Values.liveness.enabled }}
diff --git a/kubernetes/aai/components/aai-resources/values.yaml b/kubernetes/aai/components/aai-resources/values.yaml
index c2658a5..2ec78c5 100644
--- a/kubernetes/aai/components/aai-resources/values.yaml
+++ b/kubernetes/aai/components/aai-resources/values.yaml
@@ -161,6 +161,14 @@
flavorOverride: small
# default number of instances
replicaCount: 1
+# the minimum number of seconds that a newly created Pod should be ready
+minReadySeconds: 30
+updateStrategy:
+ type: RollingUpdate
+ # The number of pods that can be unavailable during the update process
+ maxUnavailable: 0
+ # The number of pods that can be created above the desired amount of pods during an update
+ maxSurge: 1
# Configuration for the resources deployment
config:
@@ -220,6 +228,7 @@
internalPort: 8447
portName2: aai-resources-5005
internalPort2: 5005
+ terminationGracePeriodSeconds: 120
ingress:
enabled: false