feat: automatically roll deployments
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
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@ -7,6 +7,37 @@
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{{- if .Values.deployment.annotations }}
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{{ toYaml .Values.deployment.annotations }}
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{{- end }}
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# The following annotations are required to trigger a rolling update. Further information can be found in the official
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# documentation of helm:
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#
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# https://helm.sh/docs/howto/charts_tips_and_tricks/#automatically-roll-deployments
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#
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{{/* database */}}
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{{- if and .Values.config.database.existingSecret.enabled .Values.config.database.existingSecret.secretName }}
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{{- $secret := default (dict "data" (dict)) (lookup "v1" "Secret" .Release.Namespace .Values.config.database.existingSecret.secretName ) }}
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checksum/secret-database: {{ print $secret.spec | sha256sum }}
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{{- else }}
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checksum/secret-database: {{ include (print $.Template.BasePath "/prometheus-postgres-exporter/secretDatabase.yaml") . | sha256sum }}
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{{- end }}
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{{/* exporter config */}}
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{{- if and .Values.config.exporterConfig.existingSecret.enabled .Values.config.exporterConfig.existingSecret.secretName }}
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{{- $secret := default (dict "data" (dict)) (lookup "v1" "Secret" .Release.Namespace .Values.config.exporterConfig.existingSecret.secretName ) }}
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checksum/secret-exporter-config: {{ print $secret.spec | sha256sum }}
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{{- else }}
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checksum/secret-exporter-config: {{ include (print $.Template.BasePath "/prometheus-postgres-exporter/secretExporterConfig.yaml") . | sha256sum }}
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{{- end }}
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{{/* web config */}}
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{{- if and .Values.config.webConfig.existingSecret.enabled .Values.config.webConfig.existingSecret.secretName }}
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{{- $secret := default (dict "data" (dict)) (lookup "v1" "Secret" .Release.Namespace .Values.config.webConfig.existingSecret.secretName ) }}
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checksum/secret-web-config: {{ print $secret.spec | sha256sum }}
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{{- else }}
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checksum/secret-web-config: {{ include (print $.Template.BasePath "/prometheus-postgres-exporter/secretWebConfig.yaml") . | sha256sum }}
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{{- end }}
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{{- end }}
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{{/* env */}}
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@ -7,18 +7,35 @@ release:
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namespace: testing
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templates:
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- templates/prometheus-postgres-exporter/deployment.yaml
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- templates/prometheus-postgres-exporter/secretDatabase.yaml
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- templates/prometheus-postgres-exporter/secretExporterConfig.yaml
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- templates/prometheus-postgres-exporter/secretWebConfig.yaml
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tests:
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- it: Rendering default
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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asserts:
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- hasDocuments:
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count: 1
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- containsDocument:
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apiVersion: apps/v1
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kind: Deployment
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name: prometheus-postgres-exporter-unittest
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namespace: testing
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- notExists:
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path: metadata.annotations
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- exists:
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path: metadata.annotations.checksum/secret-database
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- exists:
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path: metadata.annotations.checksum/secret-exporter-config
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- exists:
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path: metadata.annotations.checksum/secret-web-config
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: metadata.labels
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value:
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@ -27,27 +44,33 @@ tests:
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app.kubernetes.io/name: prometheus-postgres-exporter
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app.kubernetes.io/version: 0.1.0
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helm.sh/chart: prometheus-postgres-exporter-0.1.0
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.replicas
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value: 1
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.affinity
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- contains:
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path: spec.template.spec.containers[0].envFrom
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content:
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secretRef:
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name: prometheus-postgres-exporter-unittest-database-env
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.containers[0].args
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value:
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- --config.file=/etc/prometheus-postgres-exporter/config.d/exporterConfig.yaml
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- --web.config.file=/etc/prometheus-postgres-exporter/config.d/webConfig.yaml
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- --web.listen-address=:9187
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.containers[0].volumeMounts
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value:
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- mountPath: /etc/prometheus-postgres-exporter/config.d
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name: config-d
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.volumes
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value:
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@ -59,42 +82,59 @@ tests:
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name: prometheus-postgres-exporter-unittest-exporter-config
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- secret:
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name: prometheus-postgres-exporter-unittest-web-config
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.containers[0].image
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value: quay.io/prometheuscommunity/postgres-exporter:v0.1.0
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.containers[0].imagePullPolicy
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value: IfNotPresent
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.containers[0].resources
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.containers[0].securityContext
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.dnsConfig
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.dnsPolicy
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.hostname
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.hostNetwork
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value: false
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.imagePullSecrets
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.nodeSelector
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.priorityClassName
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.restartPolicy
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.subdomain
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.terminationGracePeriodSeconds
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value: 60
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.tolerations
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- notExists:
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path: spec.template.spec.topologySpreadConstraints
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.strategy
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value:
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@ -102,17 +142,31 @@ tests:
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rollingUpdate:
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maxSurge: 1
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maxUnavailable: 1
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test custom replicas
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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deployment.replicas: 3
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asserts:
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- equal:
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path: spec.replicas
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value: 3
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test custom affinity
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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deployment.affinity:
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nodeAffinity:
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requiredDuringSchedulingIgnoredDuringExecution:
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@ -136,9 +190,16 @@ tests:
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values:
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- antarctica-east1
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- antarctica-west1
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test additional arguments
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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deployment.postgresExporter.args:
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- "--foo=bar"
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- "--bar=foo"
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@ -151,26 +212,42 @@ tests:
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- --web.listen-address=:9187
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- --foo=bar
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- --bar=foo
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test custom imageRegistry and imageRepository
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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deployment.postgresExporter.image.registry: registry.example.local
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deployment.postgresExporter.image.repository: path/special/prometheus-postgres-exporter
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asserts:
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- equal:
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path: spec.template.spec.containers[0].image
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value: registry.example.local/path/special/prometheus-postgres-exporter:v0.1.0
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test custom imagePullPolicy
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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deployment.postgresExporter.image.pullPolicy: Always
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asserts:
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- equal:
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path: spec.template.spec.containers[0].imagePullPolicy
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value: Always
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test config.database.existingSecret
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set:
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# Normal test values
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config.database.existingSecret.enabled: true
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config.database.existingSecret.secretName: custom-database-secret
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asserts:
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@ -179,9 +256,16 @@ tests:
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content:
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secretRef:
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name: custom-database-secret
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test config.exporterConfig.existingSecret
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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config.exporterConfig.existingSecret.enabled: true
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config.exporterConfig.existingSecret.secretName: exporter-config-secret
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asserts:
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@ -190,6 +274,7 @@ tests:
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value:
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- mountPath: /etc/prometheus-postgres-exporter/config.d
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name: config-d
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.volumes
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value:
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@ -201,9 +286,16 @@ tests:
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name: exporter-config-secret
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- secret:
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name: prometheus-postgres-exporter-unittest-web-config
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test config.webConfig.existingSecret
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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config.webConfig.existingSecret.enabled: true
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config.webConfig.existingSecret.secretName: web-config-secret
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asserts:
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@ -212,6 +304,7 @@ tests:
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value:
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- mountPath: /etc/prometheus-postgres-exporter/config.d
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name: config-d
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.volumes
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value:
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@ -223,9 +316,16 @@ tests:
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name: prometheus-postgres-exporter-unittest-exporter-config
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- secret:
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name: web-config-secret
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test custom resource limits and requests
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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deployment.postgresExporter.resources:
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limits:
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cpu: 100m
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@ -242,6 +342,7 @@ tests:
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resourceFieldRef:
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divisor: "1"
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resource: limits.cpu
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- equal:
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path: spec.template.spec.containers[0].resources
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value:
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@ -251,9 +352,16 @@ tests:
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requests:
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cpu: 25m
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memory: 100MB
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template: templates/prometheus-postgres-exporter/deployment.yaml
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- it: Test custom securityContext
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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deployment.postgresExporter.securityContext:
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capabilities:
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add:
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@ -277,9 +385,16 @@ tests:
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readOnlyRootFilesystem: true
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||||
runAsNonRoot: true
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||||
runAsUser: 1000
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template: templates/prometheus-postgres-exporter/deployment.yaml
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||||
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- it: Test dnsConfig
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set:
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# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
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config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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# Normal test values
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deployment.dnsConfig:
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nameservers:
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- "8.8.8.8"
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@ -291,17 +406,31 @@ tests:
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nameservers:
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- "8.8.8.8"
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- "8.8.4.4"
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template: templates/prometheus-postgres-exporter/deployment.yaml
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||||
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||||
- it: Test dnsPolicy
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set:
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# Ensure that the secrets and config maps are well configured.
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||||
config.database.secret.databaseUsername: "postgres"
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||||
config.database.secret.databasePassword: "postgres"
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config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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||||
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# Normal test values
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deployment.dnsPolicy: ClusterFirst
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||||
asserts:
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||||
- equal:
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path: spec.template.spec.dnsPolicy
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||||
value: ClusterFirst
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||||
template: templates/prometheus-postgres-exporter/deployment.yaml
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||||
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||||
- it: Test hostNetwork, hostname, subdomain
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||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
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config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
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||||
|
||||
# Normal test values
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||||
deployment.hostNetwork: true
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||||
deployment.hostname: pg-exporter
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||||
deployment.subdomain: exporters.internal
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||||
@ -309,15 +438,24 @@ tests:
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||||
- equal:
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||||
path: spec.template.spec.hostNetwork
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||||
value: true
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||||
template: templates/prometheus-postgres-exporter/deployment.yaml
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||||
- equal:
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||||
path: spec.template.spec.hostname
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||||
value: pg-exporter
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||||
template: templates/prometheus-postgres-exporter/deployment.yaml
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||||
- equal:
|
||||
path: spec.template.spec.subdomain
|
||||
value: exporters.internal
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||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
|
||||
- it: Test imagePullSecrets
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||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
|
||||
config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
# Normal test values
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||||
deployment.imagePullSecrets:
|
||||
- name: my-pull-secret
|
||||
- name: my-special-secret
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||||
@ -327,9 +465,16 @@ tests:
|
||||
value:
|
||||
- name: my-pull-secret
|
||||
- name: my-special-secret
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||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
|
||||
- it: Test nodeSelector
|
||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
|
||||
config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
# Normal test values
|
||||
deployment.nodeSelector:
|
||||
foo: bar
|
||||
asserts:
|
||||
@ -337,33 +482,61 @@ tests:
|
||||
path: spec.template.spec.nodeSelector
|
||||
value:
|
||||
foo: bar
|
||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
|
||||
- it: Test priorityClassName
|
||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
|
||||
config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
# Normal test values
|
||||
deployment.priorityClassName: my-priority
|
||||
asserts:
|
||||
- equal:
|
||||
path: spec.template.spec.priorityClassName
|
||||
value: my-priority
|
||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
|
||||
- it: Test restartPolicy
|
||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
|
||||
config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
# Normal test values
|
||||
deployment.restartPolicy: Always
|
||||
asserts:
|
||||
- equal:
|
||||
path: spec.template.spec.restartPolicy
|
||||
value: Always
|
||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
|
||||
- it: Test terminationGracePeriodSeconds
|
||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
|
||||
config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
# Normal test values
|
||||
deployment.terminationGracePeriodSeconds: 120
|
||||
asserts:
|
||||
- equal:
|
||||
path: spec.template.spec.terminationGracePeriodSeconds
|
||||
value: 120
|
||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
|
||||
- it: Test tolerations
|
||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
|
||||
config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
# Normal test values
|
||||
deployment.tolerations:
|
||||
- key: database/type
|
||||
operator: Equal
|
||||
@ -377,9 +550,16 @@ tests:
|
||||
operator: Equal
|
||||
value: postgres
|
||||
effect: NoSchedule
|
||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
|
||||
- it: Test topologySpreadConstraints
|
||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
|
||||
config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
# Normal test values
|
||||
deployment.topologySpreadConstraints:
|
||||
- topologyKey: kubernetes.io/hostname
|
||||
whenUnsatisfiable: DoNotSchedule
|
||||
@ -395,9 +575,16 @@ tests:
|
||||
labelSelector:
|
||||
matchLabels:
|
||||
app.kubernetes.io/instance: prometheus-postgres-exporter
|
||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
|
||||
- it: Test additional volumeMounts and volumes
|
||||
set:
|
||||
# Ensure that the secrets and config maps are well configured.
|
||||
config.database.secret.databaseUsername: "postgres"
|
||||
config.database.secret.databasePassword: "postgres"
|
||||
config.database.secret.databaseConnectionUrl: "localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
# Normal test values
|
||||
deployment.postgresExporter.volumeMounts:
|
||||
- name: data
|
||||
mountPath: /usr/lib/prometheus-postgres-exporter/data
|
||||
@ -413,6 +600,7 @@ tests:
|
||||
mountPath: /usr/lib/prometheus-postgres-exporter/data
|
||||
- name: config-d
|
||||
mountPath: /etc/prometheus-postgres-exporter/config.d
|
||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
- equal:
|
||||
path: spec.template.spec.volumes
|
||||
value:
|
||||
@ -426,4 +614,5 @@ tests:
|
||||
- secret:
|
||||
name: prometheus-postgres-exporter-unittest-exporter-config
|
||||
- secret:
|
||||
name: prometheus-postgres-exporter-unittest-web-config
|
||||
name: prometheus-postgres-exporter-unittest-web-config
|
||||
template: templates/prometheus-postgres-exporter/deployment.yaml
|
||||
Loading…
x
Reference in New Issue
Block a user