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fix(deployment): define annotations to automatically roll deployments
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The following patch extends the chart to automatically roll the deployment, when
one of the configurations, stored in a config map or secret, has been changed.

The implementation add annotations which triggers `helm update` or ArgoCD to
roll the deployment. Further information can be found on the official helm
website:

  https://helm.sh/docs/howto/charts_tips_and_tricks/#automatically-roll-deployments
This commit is contained in:
Markus Pesch
2025-05-29 11:22:05 +02:00
parent 0cf63593e9
commit 3c8fb86231
3 changed files with 236 additions and 2 deletions
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31
templates/prometheus-postgres-exporter/_pod.tpl
View File

@ -4,6 +4,37 @@
{{- define "prometheus-postgres-exporter.pod.annotations" -}}
{{ include "prometheus-postgres-exporter.annotations" . }}
# The following annotations are required to trigger a rolling update. Further information can be found in the official
# documentation of helm:
#
# https://helm.sh/docs/howto/charts_tips_and_tricks/#automatically-roll-deployments
#
{{/* database */}}
{{- if and .Values.config.database.existingSecret.enabled .Values.config.database.existingSecret.secretName }}
{{- $secret := default (dict "data" (dict)) (lookup "v1" "Secret" .Release.Namespace .Values.config.database.existingSecret.secretName ) }}
checksum/secret-database: {{ print $secret.spec | sha256sum }}
{{- else }}
checksum/secret-database: {{ include (print $.Template.BasePath "/prometheus-postgres-exporter/secretDatabase.yaml") . | sha256sum }}
{{- end }}
{{/* exporter config */}}
{{- if and .Values.config.exporterConfig.existingSecret.enabled .Values.config.exporterConfig.existingSecret.secretName }}
{{- $secret := default (dict "data" (dict)) (lookup "v1" "Secret" .Release.Namespace .Values.config.exporterConfig.existingSecret.secretName ) }}
checksum/secret-exporter-config: {{ print $secret.spec | sha256sum }}
{{- else }}
checksum/secret-exporter-config: {{ include (print $.Template.BasePath "/prometheus-postgres-exporter/secretExporterConfig.yaml") . | sha256sum }}
{{- end }}
{{/* web config */}}
{{- if and .Values.config.webConfig.existingSecret.enabled .Values.config.webConfig.existingSecret.secretName }}
{{- $secret := default (dict "data" (dict)) (lookup "v1" "Secret" .Release.Namespace .Values.config.webConfig.existingSecret.secretName ) }}
checksum/secret-web-config: {{ print $secret.spec | sha256sum }}
{{- else }}
checksum/secret-web-config: {{ include (print $.Template.BasePath "/prometheus-postgres-exporter/secretWebConfig.yaml") . | sha256sum }}
{{- end }}
{{- end }}
{{/* labels */}}

2
templates/prometheus-postgres-exporter/deployment.yaml
View File

@ -18,6 +18,8 @@ spec:
{{- include "prometheus-postgres-exporter.pod.selectorLabels" . | nindent 6 }}
template:
metadata:
annotations:
{{- include "prometheus-postgres-exporter.pod.annotations" . | nindent 8 }}
labels:
{{- include "prometheus-postgres-exporter.pod.labels" . | nindent 8 }}
spec: