👩🏾‍💼 🎓 🔷 Conceptos básicos para trabajar con plantillas y gráficos de Helm

En este tutorial, analizaremos brevemente cómo Helm puede ayudar a simplificar la administración de aplicaciones de Kubernetes y aprenderemos a usar Helm para crear un gráfico básico.

La gestión de aplicaciones es un aspecto complejo de Kubernetes. Helm lo hace mucho más fácil al proporcionar un método de empaquetado de software unificado que admite el control de versiones. Helm instala y administra paquetes (llamados Gráficos en Helm) para Kubernetes, al igual que yum y apt.

En este tutorial, dejaremos que Helm cree un gráfico básico para nosotros. Este tutorial asume que tiene al menos un conocimiento básico de lo que es Helm. Si no está familiarizado con él, le sugiero que lea este tutorial antes de comenzar el artículo: https://www.alibabacloud.com/help/doc-detail/86511.htm

Luego, lo ajustaremos de forma incremental para ver cómo funcionan juntos el archivo de valores y las partes de la plantilla.

Con una tabla de trabajo tan básica, es más fácil trabajar con él que empezar desde cero.

Chart es un paquete de Helm. Contiene todas las definiciones de recursos necesarias para ejecutar una aplicación, herramienta o servicio dentro de un clúster de Kubernetes.

Piense en ello como el equivalente de Kubernetes de una fórmula Homebrew, un Apt dpkg o un archivo Yum RPM.

Crear una estructura completa de directorios de organigramas

helm create myhelm1
Creating myhelm1

Esto crea un cuadro de trabajo completo con todos los archivos necesarios en el directorio myhelm.

myhelm1/
  |
  |- .helmignore     # Contains patterns for files to ignore when packaging Helm charts.
  |
  |- Chart.yaml      # Meta Information about your chart
  |
  |- values.yaml     # The default values for your templates
  |
  |- charts/         # Charts that this chart depends on: dependencies 
  |
  |- templates/      # The template files

Se le presentarán algunos de estos archivos a lo largo de este tutorial, solo cuando necesitemos conocer esos archivos específicos.

El objetivo es utilizar el gráfico lo antes posible para crear una instancia de trabajo. Luego investigamos qué creó el gráfico y cómo lo hizo.

El archivo es lo primero values.yaml

. Contiene nuestros valores predeterminados para los objetos de Kubernetes que queremos crear.

, nginx

. 55 . busybox

— 650 .

values.yaml

nano ./myhelm1/values.yaml

# Default values for myhelm1.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

replicaCount: 1

image:
  repository: nginx
  tag: stable
  pullPolicy: IfNotPresent

values.yaml

, busybox, . .

nano ./myhelm1/values.yaml

# Default values for myhelm1.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

replicaCount: 1

image:
  repository: radial/busyboxplus
  tag: base
  pullPolicy: IfNotPresent

deployment.yaml

.

(deployment), , Kubernetes. , .

deployment.yaml

27 — . busybox. , , . busybox

60 .

( , values.yaml

. — .)

nano ./myhelm1/templates/deployment.yaml

    spec:
      containers:
        - name: {{ .Chart.Name }}
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }}

          command: ['sh', '-c', 'sleep 60']

Helm .

helm install ./myhelm1/

.

helm install ./myhelm1/

NAME:   loopy-otter
LAST DEPLOYED: Thu Feb 14 08:48:42 2019
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1/Service
NAME                 TYPE       CLUSTER-IP     EXTERNAL-IP  PORT(S)  AGE
loopy-otter-myhelm1  ClusterIP  10.109.163.87  <none>       80/TCP   0s

==> v1/Deployment
NAME                 DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
loopy-otter-myhelm1  1        0        0           0          0s

==> v1/Pod(related)
NAME                                  READY  STATUS   RESTARTS  AGE
loopy-otter-myhelm1-67b67bf4c8-tsdcq  0/1    Pending  0         0s

NOTES:
1. Get the application URL by running these commands:
  export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=myhelm1,app.kubernetes.io/instance=loopy-otter" -o jsonpath="{.items[0].metadata.name}")
  echo "Visit http://127.0.0.1:8080 to use your application"
  kubectl port-forward $POD_NAME 8080:80

Helm : NAME: loopy-otter

. . .

, .

, Helm .yaml

, , values.yaml

.

nginx. busybox

.

NOTES.txt, .

, Pod .

kubectl get pods
NAME                                   READY   STATUS    RESTARTS   AGE
loopy-otter-myhelm1-67b67bf4c8-tsdcq   0/1     Running   0          13s

. helm delete

, .

— , Kubernetes.

helm delete loopy-otter
release "loopy-otter" deleted

helmignore NOTES.txt

.helmignore

NOTES.txt

.

.helmignore

, Helm .

nano ./myhelm1/.helmignore

NOTES.txt

, , .

helm install .\myhelm1\ --name test1
NAME:   test1
LAST DEPLOYED: Thu Feb 14 08:56:10 2019
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1/Service
NAME           TYPE       CLUSTER-IP     EXTERNAL-IP  PORT(S)  AGE
test1-myhelm1  ClusterIP  10.96.102.116  <none>       80/TCP   0s

==> v1/Deployment
NAME           DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
test1-myhelm1  1        0        0           0          0s

==> v1/Pod(related)
NAME                            READY  STATUS             RESTARTS  AGE
test1-myhelm1-6f77bf4459-9nxpz  0/1    ContainerCreating  0         0s

( , .)

test1.

helm delete test1
release "test1" deleted

--dry-run --debug

--dry-run

--debug

, , Helm YAML .

Kubernetes .

helm install .\myhelm1\ --name test1 --dry-run --debug
[debug] Created tunnel using local port: '49958'

[debug] SERVER: "127.0.0.1:49958"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

Error: a release named test1 already exists.
Run: helm ls --all test1; to check the status of the release
Or run: helm del --purge test1; to delete it

, .

release

helm ls --all test1
NAME    REVISION        UPDATED                         STATUS  CHART           APP VERSION     NAMESPACE
test1   1               Thu Feb 14 08:56:10 2019        DELETED myhelm1-0.1.0   1.0             default

.

(debug

) : test2:

helm install .\myhelm1\ --name test2 --dry-run --debug

[debug] Created tunnel using local port: '49970'

[debug] SERVER: "127.0.0.1:49970"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

NAME:   test2
REVISION: 1
RELEASED: Thu Feb 14 08:59:22 2019
CHART: myhelm1-0.1.0
USER-SUPPLIED VALUES:
{}

COMPUTED VALUES:
affinity: {}
fullnameOverride: ""
image:
  pullPolicy: IfNotPresent
  repository: radial/busyboxplus
  tag: base
ingress:
  annotations: {}
  enabled: false
  hosts:
  - chart-example.local
  paths: []
  tls: []
nameOverride: ""
nodeSelector: {}
replicaCount: 1
resources: {}
service:
  port: 80
  type: ClusterIP
tolerations: []

HOOKS:
---
# test2-myhelm1-test-connection
apiVersion: v1
kind: Pod
metadata:
  name: "test2-myhelm1-test-connection"
  labels:
    app.kubernetes.io/name: myhelm1
    helm.sh/chart: myhelm1-0.1.0
    app.kubernetes.io/instance: test2
    app.kubernetes.io/managed-by: Tiller
  annotations:
    "helm.sh/hook": test-success
spec:
  containers:
    - name: wget
      image: busybox
      command: ['wget']
      args:  ['test2-myhelm1:80']
  restartPolicy: Never

MANIFEST:
---
# Source: myhelm1/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
  name: test2-myhelm1
  labels:
    app.kubernetes.io/name: myhelm1
    helm.sh/chart: myhelm1-0.1.0
    app.kubernetes.io/instance: test2
    app.kubernetes.io/managed-by: Tiller
spec:
  type: ClusterIP
  ports:
    - port: 80
      targetPort: http
      protocol: TCP
      name: http
  selector:
    app.kubernetes.io/name: myhelm1
    app.kubernetes.io/instance: test2

---
# Source: myhelm1/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test2-myhelm1
  labels:
    app.kubernetes.io/name: myhelm1
    helm.sh/chart: myhelm1-0.1.0
    app.kubernetes.io/instance: test2
    app.kubernetes.io/managed-by: Tiller
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: myhelm1
      app.kubernetes.io/instance: test2
  template:
    metadata:
      labels:
        app.kubernetes.io/name: myhelm1
        app.kubernetes.io/instance: test2
    spec:
      containers:
        - name: myhelm1
          image: "radial/busyboxplus:base"
          imagePullPolicy: IfNotPresent

          command: ['sh', '-c', 'sleep 60']

          ports:
            - name: http
              containerPort: 80
              protocol: TCP
          livenessProbe:
            httpGet:
              path: /
              port: http
          readinessProbe:
            httpGet:
              path: /
              port: http
          resources:
            {}

, , .

, .

. nginx. .

20 # Source: myhelm1/templates/service.yaml ... kind: Service

— — Pod.

, .helmignore .

nano ./myhelm1/.helmignore

test-connection.yaml
service.yaml

busybox livenessProbes.

29 42 deployment.yaml

nano ./myhelm1/templates/deployment.yaml

          ports:
            - name: http
              containerPort: 80
              protocol: TCP
          livenessProbe:
            httpGet:
              path: /
              port: http
          readinessProbe:
            httpGet:
              path: /
              port: http
          resources:
            {}

, helm install

.

  labels:
    app.kubernetes.io/name: myhelm1
    helm.sh/chart: myhelm1-0.1.0
    app.kubernetes.io/instance: test4
    app.kubernetes.io/managed-by: Tiller

  selector:
    matchLabels:
      app.kubernetes.io/name: myhelm1
      app.kubernetes.io/instance: test4

    metadata:
      labels:
        app.kubernetes.io/name: myhelm1
        app.kubernetes.io/instance: test4

helm install .\myhelm1\ --name test2 --dry-run --debug
[debug] Created tunnel using local port: '49976'

[debug] SERVER: "127.0.0.1:49976"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

NAME:   test2
REVISION: 1
RELEASED: Thu Feb 14 09:09:55 2019
CHART: myhelm1-0.1.0
USER-SUPPLIED VALUES:
{}

COMPUTED VALUES:
affinity: {}
fullnameOverride: ""
image:
  pullPolicy: IfNotPresent
  repository: radial/busyboxplus
  tag: base
ingress:
  annotations: {}
  enabled: false
  hosts:
  - chart-example.local
  paths: []
  tls: []
nameOverride: ""
nodeSelector: {}
replicaCount: 1
resources: {}
service:
  port: 80
  type: ClusterIP
tolerations: []

HOOKS:
MANIFEST:

---
# Source: myhelm1/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test2-myhelm1
spec:
  replicas: 1
  template:
    spec:
      containers:
        - name: myhelm1
          image: "radial/busyboxplus:base"
          imagePullPolicy: IfNotPresent

          command: ['sh', '-c', 'sleep 60']

USER-SUPPLIED VALUES: , . .
COMPUTED VALUES: values.yaml

. , .
HOOKS: .
deployment.yaml

. , values.yaml

.

--dry-run --debug

. , , . : Helm , .

, .

helm install .\myhelm1\ --name test2
NAME:   test2
LAST DEPLOYED: Thu Feb 14 09:12:01 2019
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1/Deployment
NAME           DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
test2-myhelm1  1        0        0           0          0s

==> v1/Pod(related)
NAME                            READY  STATUS             RESTARTS  AGE
test2-myhelm1-5bd9bb65c7-6pr4q  0/1    ContainerCreating  0         0s

— Pod. Pod .

kubectl get pods
NAME                             READY   STATUS    RESTARTS   AGE
test2-myhelm1-5bd9bb65c7-6pr4q   1/1     Running   0          10s

helm delete test2
release "test2" deleted

imagePullPolicy = Never

values.yaml

(placeholders) .

. , , --set

.

imagePullPolicy .

, .

values.yaml.

nano ./myhelm1/values.yaml

# Default values for myhelm1.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

replicaCount: 1

image:
  repository: radial/busyboxplus
  tag: base
  pullPolicy: IfNotPresent

, . ( 22-25)

nano ./myhelm1/templates/deployment.yaml
      containers:
        - name: {{ .Chart.Name }}
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }}

.Values.image.pullPolicy

values.yaml
.image.pullPolicy

image:
  pullPolicy: IfNotPresent

pullPolicy: IfNotPresent

. (, , .)

, , . (imagePullPolicy: Never

)

Kubernetes:

imagePullPolicy: Never: , . .

, --set

.

helm install .\myhelm1\ --set imagePullPolicy=Never --name test3 --dry-run --debug
[debug] Created tunnel using local port: '50101'

[debug] SERVER: "127.0.0.1:50101"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

NAME:   test3
REVISION: 1
RELEASED: Thu Feb 14 10:10:37 2019
CHART: myhelm1-0.1.0
USER-SUPPLIED VALUES:
imagePullPolicy: Never

COMPUTED VALUES:
affinity: {}
fullnameOverride: ""
image:
  pullPolicy: IfNotPresent
  repository: radial/busyboxplus
  tag: base
imagePullPolicy: Never
ingress:
  annotations: {}
  enabled: false
  hosts:
  - chart-example.local
  paths: []
  tls: []
nameOverride: ""
nodeSelector: {}
replicaCount: 1
resources: {}
service:
  port: 80
  type: ClusterIP
tolerations: []

HOOKS:
MANIFEST:

---
# Source: myhelm1/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test3-myhelm1

spec:
  replicas: 1

  template:
    spec:
      containers:
        - name: myhelm1
          image: "radial/busyboxplus:base"
          imagePullPolicy: IfNotPresent

          command: ['sh', '-c', 'sleep 60']

USER-SUPPLIED VALUES : imagePullPolicy: Never

COMPUTED VALUES: :

image:
  pullPolicy: IfNotPresent
  tag: base
imagePullPolicy: Never

--set

.

yaml.

: imagePullPolicy: IfNotPresent

: .

: :

helm install .\myhelm1\ --set image.PullPolicy=Never --name test3 --dry-run --debug
[debug] Created tunnel using local port: '50107'

[debug] SERVER: "127.0.0.1:50107"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

NAME:   test3
REVISION: 1
RELEASED: Thu Feb 14 10:14:11 2019
CHART: myhelm1-0.1.0
USER-SUPPLIED VALUES:
image:
  PullPolicy: Never            < - - - - - -

COMPUTED VALUES:
affinity: {}
fullnameOverride: ""
image:
  PullPolicy: Never            < - - - - - -
  pullPolicy: IfNotPresent     < - - - - - -
  repository: radial/busyboxplus

, . , -. ( — , ).

, , . values.yaml . .

, .

helm install .\myhelm1\ --set image.pullPolicy=Never --name test3 --dry-run --debug  

[debug] Created tunnel using local port: '50113'

[debug] SERVER: "127.0.0.1:50113"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

NAME:   test3
REVISION: 1
RELEASED: Thu Feb 14 10:15:10 2019
CHART: myhelm1-0.1.0
USER-SUPPLIED VALUES:
image:
  pullPolicy: Never     < - - - - - - - - - - - - -

COMPUTED VALUES:
affinity: {}
fullnameOverride: ""
image:
  pullPolicy: Never
  repository: radial/busyboxplus
  tag: base
ingress:
  annotations: {}
  enabled: false
  hosts:
  - chart-example.local
  paths: []
  tls: []
nameOverride: ""
nodeSelector: {}
replicaCount: 1
resources: {}
service:
  port: 80
  type: ClusterIP
tolerations: []

HOOKS:
MANIFEST:

---
# Source: myhelm1/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test3-myhelm1

spec:
  replicas: 1
  template:
    spec:
      containers:
        - name: myhelm1
          image: "radial/busyboxplus:base"
          imagePullPolicy: Never     < - - - - - - - - - - - 

          command: ['sh', '-c', 'sleep 60']

, imagePullPolicy: Never

… .

COMPUTED VALUES , .

COMPUTED VALUES:
image:
  pullPolicy: Never

. .

, . , 5 .

nano ./myhelm1/values.yaml

# Default values for myhelm1.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

replicaCount: 1

image:
  repository: radial/busyboxplus
  tag: base
  pullPolicy: IfNotPresent

#nameOverride: ""
#fullnameOverride: ""

#service:
#  type: ClusterIP
#  port: 80

#ingress:
#  enabled: false
#  annotations: {}
    # kubernetes.io/ingress.class: nginx
    # kubernetes.io/tls-acme: "true"
#  paths: []
#  hosts:
#    - chart-example.local
#  tls: []
  #  - secretName: chart-example-tls
  #    hosts:
  #      - chart-example.local

#resources: {}
  # We usually recommend not to specify default resources and to leave this as a conscious
  # choice for the user. This also increases chances charts run on environments with little
  # resources, such as Minikube. If you do want to specify resources, uncomment the following
  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
  # limits:
  #  cpu: 100m
  #  memory: 128Mi
  # requests:
  #  cpu: 100m
  #  memory: 128Mi

#nodeSelector: {}

#tolerations: []

#affinity: {}

helm install .\myhelm1\ --set image.pullPolicy=Never --name test3 --dry-run --debug
[debug] Created tunnel using local port: '50125'

[debug] SERVER: "127.0.0.1:50125"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

Error: render error in "myhelm1/templates/ingress.yaml": template: myhelm1/templates/ingress.yaml:1:14: executing "myhelm1/templates/ingress.yaml" at <.Values.ingress.enab...>: can't evaluate field enabled in type interface {}

Values.ingress.enabled

myhelm1/templates/ingress.yaml

ingress — nginx, .

ingress.yaml

.

nano ./myhelm1/.helmignore
ingress.yaml

: myhelm1 image.pullPolicy = Never

--set replicaCount=3

helm install .\myhelm1\ --set image.pullPolicy=Never --set replicaCount=3 --name test3 --dry-run --debug
[debug] Created tunnel using local port: '50140'

[debug] SERVER: "127.0.0.1:50140"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

NAME:   test3
REVISION: 1
RELEASED: Thu Feb 14 10:23:43 2019
CHART: myhelm1-0.1.0

USER-SUPPLIED VALUES:
image:
  pullPolicy: Never        < * * * = = = = = = = = = = = = = 
replicaCount: 3    < - - - - - - - - - - - - - - - - 

COMPUTED VALUES:
image:
  pullPolicy: Never        < * * * = = = = = = = = = = = = =
  repository: radial/busyboxplus
  tag: base
replicaCount: 3    < - - - - - - - - - - - - - - - - 

HOOKS:
MANIFEST:

---
# Source: myhelm1/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test3-myhelm1
spec:
  replicas: 3   < - - - - - - - - - - - - - - - - - -
  template:
    spec:
      containers:
        - name: myhelm1
          image: "radial/busyboxplus:base"
          imagePullPolicy: Never        < * * * = = = = = = = = = = = = =

          command: ['sh', '-c', 'sleep 60']

--set replicaCount

deployment.yaml

helm install .\myhelm1\ --set image.pullPolicy=Never --set replicaCount=3 --name test3
NAME:   test3
LAST DEPLOYED: Thu Feb 14 10:34:45 2019
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1/Deployment
NAME           DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
test3-myhelm1  3        0        0           0          0s

==> v1/Pod(related)
NAME                          READY  STATUS             RESTARTS  AGE
test3-myhelm1-878d8d7c-7xshs  0/1    Pending            0         0s
test3-myhelm1-878d8d7c-fnjqn  0/1    ContainerCreating  0         0s
test3-myhelm1-878d8d7c-gjw4m  0/1    Pending            0         0s

. — 3, , 3 .

3 . helm status

.

helm status test3
LAST DEPLOYED: Thu Feb 14 10:34:45 2019
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1/Deployment
NAME           DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
test3-myhelm1  3        3        3           3          20s

==> v1/Pod(related)
NAME                          READY  STATUS   RESTARTS  AGE
test3-myhelm1-878d8d7c-7xshs  1/1    Running  0         20s
test3-myhelm1-878d8d7c-fnjqn  1/1    Running  0         20s
test3-myhelm1-878d8d7c-gjw4m  1/1    Running  0         20s

. test3.

helm delete test3
release "test3" deleted

value

values.yaml

.

: terminationGracePeriodSeconds

terminationGracePeriodSeconds — , . grace period — , , , , , . , . 30 .

terminationGracePeriodSeconds: 30

values.yaml

, 5–12 , :

nano ./myhelm1/values.yaml

replicaCount: 1

terminationGracePeriodSeconds: 30

image:
  repository: radial/busyboxplus
  tag: base
  pullPolicy: IfNotPresent

, ( 22 29 , )

nano ./myhelm1/templates/deployment.yaml

      containers:
        - name: {{ .Chart.Name }}
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }}

          terminationGracePeriodSeconds: {{ .Values.terminationGracePeriodSeconds }}

          command: ['sh', '-c', 'sleep 60']

helm install .\myhelm1\ --name test4 --dry-run --debug
[debug] Created tunnel using local port: '50239'

[debug] SERVER: "127.0.0.1:50239"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

NAME:   test4
REVISION: 1
RELEASED: Thu Feb 14 10:54:58 2019
CHART: myhelm1-0.1.0
USER-SUPPLIED VALUES:
{}

COMPUTED VALUES:
image:
  pullPolicy: IfNotPresent
  repository: radial/busyboxplus
  tag: base
replicaCount: 1
terminationGracePeriodSeconds: 30     < - - - - - - -

HOOKS:
MANIFEST:

---
# Source: myhelm1/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test4-myhelm1
spec:
  replicas: 1
  template:
    spec:
      containers:
        - name: myhelm1
          image: "radial/busyboxplus:base"
          imagePullPolicy: IfNotPresent

          terminationGracePeriodSeconds: 30     < - - - - - -

          command: ['sh', '-c', 'sleep 60']

. COMPUTED VALUES: .

: , terminationGracePeriodSeconds

10.

helm install .\myhelm1\ --set terminationGracePeriodSeconds=10 --name test4 --dry-run --debug
[debug] Created tunnel using local port: '50245'

[debug] SERVER: "127.0.0.1:50245"

[debug] Original chart version: ""
[debug] CHART PATH: C:\k8\myhelm1

NAME:   test4
REVISION: 1
RELEASED: Thu Feb 14 10:56:33 2019
CHART: myhelm1-0.1.0

USER-SUPPLIED VALUES:
terminationGracePeriodSeconds: 10     < - - - - - -

COMPUTED VALUES:
image:
  pullPolicy: IfNotPresent
  repository: radial/busyboxplus
  tag: base
replicaCount: 1
terminationGracePeriodSeconds: 10     < - - - - - -

HOOKS:
MANIFEST:

---
# Source: myhelm1/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test4-myhelm1
spec:
  replicas: 1
  template:
    spec:
      containers:
        - name: myhelm1
          image: "radial/busyboxplus:base"
          imagePullPolicy: IfNotPresent

          terminationGracePeriodSeconds: 10     < - - - - - -

          command: ['sh', '-c', 'sleep 60']

. COMPUTED VALUES: 10

10.

_helpers.tpl

. ( . .)

, .

. (.helmignore

)

En el trabajo, creará sus propios gráficos base esqueléticos de los que copiará.

Aprendimos los conceptos básicos de Helm el primer día, modificando el gráfico nginx

para adaptarlo a nuestros requisitos. --dry-run --debug

- la mejor función de Helm: prueba y depuración antes de la instalación.

Conceptos básicos para trabajar con plantillas y gráficos de Helm - Parte 1

Crear una estructura completa de directorios de organigramas

helmignore NOTES.txt

--dry-run --debug

imagePullPolicy = Never

value

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