docs(helm): added some documentation

docker-compose.yaml

@@ -17,48 +17,49 @@ services:
       WORDPRESS_PASSWORD: initial-password-change-it-on-wp-admin-immediately # SHOW ON INFO
       MARIADB_HOST: wordpress-template-database
       MARIADB_PORT_NUMBER: 3306
-      # NOTE: For staging database (staging should not contain confidential data)
-      # WORDPRESS_DATABASE_NAME: wptemplatestag
-      # WORDPRESS_DATABASE_USER: wptemplatestag
-      # WORDPRESS_DATABASE_PASSWORD: ueqosGeIZMprSMglgnjq7xCImJ47qg
+      # NOTE: For staging database
+      WORDPRESS_DATABASE_NAME: wptemplatestag
+      WORDPRESS_DATABASE_USER: wptemplatestag
+      # TODO: fetch password from kubernetes!
+      WORDPRESS_DATABASE_PASSWORD: ueqosGeIZMprSMglgnjq7xCImJ47qg
       # NOTE: For local database
-      WORDPRESS_DATABASE_NAME: wptemplatelocal
-      WORDPRESS_DATABASE_USER: wptemplatelocal
-      WORDPRESS_DATABASE_PASSWORD: secret
+      # WORDPRESS_DATABASE_NAME: wptemplatelocal
+      # WORDPRESS_DATABASE_USER: wptemplatelocal
+      # WORDPRESS_DATABASE_PASSWORD: secret
 
   # NOTE: For staging database
-  # wordpress-template-database:
-  #   container_name: wordpress-template-database
-  #   image: taitounited/taito-cli:latest
-  #   restart: unless-stopped
-  #   entrypoint: /bin/sh -c "cd /project && taito db-proxy:stag 3306"
-  #   networks:
-  #     - default
-  #   ports:
-  #     - "7587:3306"
-  #   volumes:
-  #     - ".:/project"
-  #     - "${HOME}/.taito:/root/.taito"
-  #     - "${HOME}/.ssh:/root/.ssh"
-  #   environment:
-  #     taito_docker: 'true'
-
-  # NOTE: For local database
   wordpress-template-database:
     container_name: wordpress-template-database
-    image: mysql:5.7
+    image: taitounited/taito-cli:latest
     restart: unless-stopped
+    entrypoint: /bin/sh -c "cd /project && taito db-proxy:stag 3306"
     networks:
       - default
     ports:
       - "7587:3306"
     volumes:
-      - "./database/init:/docker-entrypoint-initdb.d"
+      - ".:/project"
+      - "${HOME}/.taito:/root/.taito"
+      - "${HOME}/.ssh:/root/.ssh"
     environment:
-      MYSQL_ROOT_PASSWORD: secret
-      MYSQL_DATABASE: wptemplatelocal
-      MYSQL_USER: wptemplatelocal
-      MYSQL_PASSWORD: secret
+      taito_docker: 'true'
+
+  # NOTE: For local database
+  # wordpress-template-database:
+  #   container_name: wordpress-template-database
+  #   image: mysql:5.7
+  #   restart: unless-stopped
+  #   networks:
+  #     - default
+  #   ports:
+  #     - "7587:3306"
+  #   volumes:
+  #     - "./database/init:/docker-entrypoint-initdb.d"
+  #   environment:
+  #     MYSQL_ROOT_PASSWORD: secret
+  #     MYSQL_DATABASE: wptemplatelocal
+  #     MYSQL_USER: wptemplatelocal
+  #     MYSQL_PASSWORD: secret
 
 networks:
   default:

scripts/helm/README.md

@@ -1,3 +1,14 @@
 # helm
 
 This folder contains a reusable helm chart for wordpress sites. [Helm](https://helm.sh/) is a package manager for Kubernetes.
+
+The subchart located in charts/wordpress was forked from https://github.com/bitnami/bitnami-docker-wordpress, but has been modified since:
+
+- Added support for `externalDatabase.passwordSecretName` and `externalDatabase.passwordSecretKey` variables.
+- Added support for reading db settings from environment variables: `wordpress/app-entrypoint.sh` and `wordpress/template-env.sh`
+- Added support for copying data from container image to pvc on container start:
+  * Use `/bitnami-pvc` as mount path instead of `/bitnami`.
+  * Mount volumes only if `persistence.enabled` is true so that we can determine if PVC is enabled during container bootstrap.
+  * Copy data from container to pvc on container start: `wordpress/app-entrypoint.sh` -> `template-env.sh`
+
+TODO: Either try to merge changes back to original chart or make a simplified custom chart.

scripts/helm/charts/wordpress/LICENSE

@@ -0,0 +1,13 @@
+Copyright (c) 2015-2018 Bitnami
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.