[incubator/vault] allow extra init containers to be added (#9249)

* allow extra init containers to be added

Signed-off-by: Michael Raimondi <mike@mikeraimondi.com>

* fix extraInitContainers default to be `{}`

Signed-off-by: Paul Czarkowski <username.taken@gmail.com>

* document default of extraInitContainers to be `{}`

Signed-off-by: Paul Czarkowski <username.taken@gmail.com>

incubator/vault/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: A Helm chart for Vault, a tool for managing secrets
 name: vault
-version: 0.14.9
+version: 0.14.10
 appVersion: 1.0.1
 home: https://www.vaultproject.io/
 icon: https://www.vaultproject.io/assets/images/mega-nav/logo-vault-0f83e3d2.svg

incubator/vault/README.md

@@ -55,6 +55,7 @@ The following table lists the configurable parameters of the Vault chart and the
 | `vault.dev`                       | Use Vault in dev mode                    | true (set to false in production)   |
 | `vault.extraEnv`                  | Extra env vars for Vault pods            | `{}`                                |
 | `vault.extraContainers`           | Sidecar containers to add to the vault pod | `{}`                              |
+| `vault.extraInitContainers`       | Init containers to be added to the vault pod | `{}`                            |
 | `vault.extraVolumes`              | Additional volumes to the controller pod | `{}`                                |
 | `vault.customSecrets`             | Custom secrets available to Vault        | `[]`                                |
 | `vault.config`                    | Vault configuration                      | No default backend                  |

incubator/vault/templates/deployment.yaml

@@ -29,6 +29,10 @@ spec:
         {{ $key }}: {{ $value | quote }}
         {{- end }}
     spec:
+      {{- if .Values.vault.extraInitContainers }}
+      initContainers:
+{{ tpl .Values.vault.extraInitContainers . | indent 6 }}
+      {{- end }}
       containers:
       - name: {{ .Chart.Name }}
         image: "{{ .Values.image.repository }}:{{ default .Chart.AppVersion .Values.image.tag }}"

incubator/vault/values.yaml

@@ -128,6 +128,11 @@ vault:
   #   - name: some-mount
   #     mountPath: /some/path
   extraVolumes: {}
+  extraInitContainers: {}
+  ## Init containers to be added
+  # - name: do-something
+  #   image: busybox
+  #   command: ['do', 'something']
   # Log level
   # https://www.vaultproject.io/docs/commands/server.html#log-level
   logLevel: "info"