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prometheus-postgres-exporter/unittests/deployment/deployment.yaml
Markus Pesch 3c8fb86231
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fix(deployment): define annotations to 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
2025-05-29 11:22:05 +02:00

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chart:
appVersion: 0.1.0
version: 0.1.0
suite: Deployment template (basic)
release:
name: prometheus-postgres-exporter-unittest
namespace: testing
templates:
- templates/prometheus-postgres-exporter/deployment.yaml
- templates/prometheus-postgres-exporter/secretDatabase.yaml
- templates/prometheus-postgres-exporter/secretExporterConfig.yaml
- templates/prometheus-postgres-exporter/secretWebConfig.yaml
tests:
- it: Rendering default
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"
asserts:
- hasDocuments:
count: 1
template: templates/prometheus-postgres-exporter/deployment.yaml
- containsDocument:
apiVersion: apps/v1
kind: Deployment
name: prometheus-postgres-exporter-unittest
namespace: testing
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: metadata.annotations.checksum/secret-database
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: metadata.labels
value:
app.kubernetes.io/instance: prometheus-postgres-exporter-unittest
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: prometheus-postgres-exporter
app.kubernetes.io/version: 0.1.0
helm.sh/chart: prometheus-postgres-exporter-0.1.0
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.replicas
value: 1
template: templates/prometheus-postgres-exporter/deployment.yaml
- exists:
path: spec.template.metadata.annotations.checksum/secret-database
template: templates/prometheus-postgres-exporter/deployment.yaml
- exists:
path: spec.template.metadata.annotations.checksum/secret-exporter-config
template: templates/prometheus-postgres-exporter/deployment.yaml
- exists:
path: spec.template.metadata.annotations.checksum/secret-web-config
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.metadata.labels
value:
app.kubernetes.io/instance: prometheus-postgres-exporter-unittest
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: prometheus-postgres-exporter
app.kubernetes.io/version: 0.1.0
helm.sh/chart: prometheus-postgres-exporter-0.1.0
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.affinity
template: templates/prometheus-postgres-exporter/deployment.yaml
- contains:
path: spec.template.spec.containers[0].envFrom
content:
secretRef:
name: prometheus-postgres-exporter-unittest-database-env
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.containers[0].args
value:
- --config.file=/etc/prometheus-postgres-exporter/config.d/exporterConfig.yaml
- --web.config.file=/etc/prometheus-postgres-exporter/config.d/webConfig.yaml
- --web.listen-address=:9187
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.containers[0].volumeMounts
value:
- mountPath: /etc/prometheus-postgres-exporter/config.d
name: config-d
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.volumes
value:
- name: config-d
projected:
defaultMode: 444
sources:
- secret:
name: prometheus-postgres-exporter-unittest-exporter-config
- secret:
name: prometheus-postgres-exporter-unittest-web-config
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.containers[0].image
value: quay.io/prometheuscommunity/postgres-exporter:v0.1.0
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.containers[0].imagePullPolicy
value: IfNotPresent
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.containers[0].resources
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.containers[0].securityContext
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.dnsConfig
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.dnsPolicy
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.hostname
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.hostNetwork
value: false
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.imagePullSecrets
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.nodeSelector
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.priorityClassName
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.restartPolicy
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.subdomain
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.terminationGracePeriodSeconds
value: 60
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.tolerations
template: templates/prometheus-postgres-exporter/deployment.yaml
- notExists:
path: spec.template.spec.topologySpreadConstraints
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.strategy
value:
type: "RollingUpdate"
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test custom replicas
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.replicas: 3
asserts:
- equal:
path: spec.replicas
value: 3
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test custom affinity
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.affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values:
- antarctica-east1
- antarctica-west1
asserts:
- equal:
path: spec.template.spec.affinity
value:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: topology.kubernetes.io/zone
operator: In
values:
- antarctica-east1
- antarctica-west1
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test additional arguments
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.args:
- "--foo=bar"
- "--bar=foo"
asserts:
- equal:
path: spec.template.spec.containers[0].args
value:
- --config.file=/etc/prometheus-postgres-exporter/config.d/exporterConfig.yaml
- --web.config.file=/etc/prometheus-postgres-exporter/config.d/webConfig.yaml
- --web.listen-address=:9187
- --foo=bar
- --bar=foo
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test custom imageRegistry and imageRepository
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.image.registry: registry.example.local
deployment.postgresExporter.image.repository: path/special/prometheus-postgres-exporter
asserts:
- equal:
path: spec.template.spec.containers[0].image
value: registry.example.local/path/special/prometheus-postgres-exporter:v0.1.0
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test custom imagePullPolicy
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.image.pullPolicy: Always
asserts:
- equal:
path: spec.template.spec.containers[0].imagePullPolicy
value: Always
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test config.database.existingSecret
set:
# Normal test values
config.database.existingSecret.enabled: true
config.database.existingSecret.secretName: custom-database-secret
asserts:
- contains:
path: spec.template.spec.containers[0].envFrom
content:
secretRef:
name: custom-database-secret
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test config.exporterConfig.existingSecret
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
config.exporterConfig.existingSecret.enabled: true
config.exporterConfig.existingSecret.secretName: exporter-config-secret
asserts:
- equal:
path: spec.template.spec.containers[0].volumeMounts
value:
- mountPath: /etc/prometheus-postgres-exporter/config.d
name: config-d
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.volumes
value:
- name: config-d
projected:
defaultMode: 444
sources:
- secret:
name: exporter-config-secret
- secret:
name: prometheus-postgres-exporter-unittest-web-config
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test config.webConfig.existingSecret
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
config.webConfig.existingSecret.enabled: true
config.webConfig.existingSecret.secretName: web-config-secret
asserts:
- equal:
path: spec.template.spec.containers[0].volumeMounts
value:
- mountPath: /etc/prometheus-postgres-exporter/config.d
name: config-d
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.volumes
value:
- name: config-d
projected:
defaultMode: 444
sources:
- secret:
name: prometheus-postgres-exporter-unittest-exporter-config
- secret:
name: web-config-secret
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test custom resource limits and requests
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.resources:
limits:
cpu: 100m
memory: 250MB
requests:
cpu: 25m
memory: 100MB
asserts:
- equal:
path: spec.template.spec.containers[0].env
value:
- name: GOMAXPROCS
valueFrom:
resourceFieldRef:
divisor: "1"
resource: limits.cpu
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.containers[0].resources
value:
limits:
cpu: 100m
memory: 250MB
requests:
cpu: 25m
memory: 100MB
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test custom securityContext
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.securityContext:
capabilities:
add:
- NET_RAW
drop:
- ALL
privileged: false
readOnlyRootFilesystem: true
runAsNonRoot: true
runAsUser: 1000
asserts:
- equal:
path: spec.template.spec.containers[0].securityContext
value:
capabilities:
add:
- NET_RAW
drop:
- ALL
privileged: false
readOnlyRootFilesystem: true
runAsNonRoot: true
runAsUser: 1000
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test dnsConfig
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.dnsConfig:
nameservers:
- "8.8.8.8"
- "8.8.4.4"
asserts:
- equal:
path: spec.template.spec.dnsConfig
value:
nameservers:
- "8.8.8.8"
- "8.8.4.4"
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test dnsPolicy
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.dnsPolicy: ClusterFirst
asserts:
- equal:
path: spec.template.spec.dnsPolicy
value: ClusterFirst
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test hostNetwork, hostname, subdomain
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.hostNetwork: true
deployment.hostname: pg-exporter
deployment.subdomain: exporters.internal
asserts:
- equal:
path: spec.template.spec.hostNetwork
value: true
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.hostname
value: pg-exporter
template: templates/prometheus-postgres-exporter/deployment.yaml
- equal:
path: spec.template.spec.subdomain
value: exporters.internal
template: templates/prometheus-postgres-exporter/deployment.yaml
- it: Test imagePullSecrets
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.imagePullSecrets:
- name: my-pull-secret
- name: my-special-secret
asserts:
- equal:
path: spec.template.spec.imagePullSecrets
value:
- name: my-pull-secret
- name: my-special-secret
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:
- equal:
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
value: postgres
effect: NoSchedule
asserts:
- equal:
path: spec.template.spec.tolerations
value:
- key: database/type
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
labelSelector:
matchLabels:
app.kubernetes.io/instance: prometheus-postgres-exporter
asserts:
- equal:
path: spec.template.spec.topologySpreadConstraints
value:
- topologyKey: kubernetes.io/hostname
whenUnsatisfiable: DoNotSchedule
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
deployment.volumes:
- name: data
hostPath:
path: /usr/lib/prometheus-postgres-exporter/data
asserts:
- equal:
path: spec.template.spec.containers[0].volumeMounts
value:
- name: data
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:
- name: data
hostPath:
path: /usr/lib/prometheus-postgres-exporter/data
- name: config-d
projected:
defaultMode: 444
sources:
- secret:
name: prometheus-postgres-exporter-unittest-exporter-config
- secret:
name: prometheus-postgres-exporter-unittest-web-config
template: templates/prometheus-postgres-exporter/deployment.yaml
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