Postgres on kubernetes recipe, readme and yamls

postgres-on-kubernetes/README.md

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+![postgres logo](https://raw.githubusercontent.com/docker-library/docs/01c12653951b2fe592c1f93a13b4e289ada0e3a1/postgres/logo.png "Postgres Logo")
+
+## What is PostgreSQL?
+
+---
+
+PostgreSQL, often simply "Postgres", is an object-relational database management system (ORDBMS) with an emphasis on extensibility and standards-compliance. It can handle workloads ranging from small single-machine applications to large Internet-facing applications with many concurrent users. Recent versions also provide replication of the database itself for security and scalability.
+
+## Features
+
+---
+
+- User-defined types.
+- Table inheritance.
+- Sophisticated locking mechanism.
+- Foreign key referential integrity.
+- Views, rules, subquery.
+- Nested transactions (savepoints)
+- Multi-version concurrency control (MVCC)
+- Asynchronous replication.
+
+## Installation
+
+---
+
+1. Select the devices to which PostgreSQL will be installed from 'Devices' page.
+
+2. Navigate to the 'App Marketplace' tab and select the 'PostgreSQL' application.
+
+3. The 'Install Now' button should now appear near the top of the screen. Select this button.
+
+4. Give your installation a name and fill all the parameters. Click 'Install PostgrSQL' in the bottom right corner.
+
+## Required Parameters
+
+---
+
+**POSTGRES_USERNAME**
+This variable is used in conjunction with `POSTGRES_PASSWORD` to set a user and its password.
+
+**POSTGRES_PASSWORD**
+This variable is used in conjunction with `POSTGRES_USERNAME` to set a user and its password.
+
+## Additional Parameters
+
+---
+
+**Installation Name**
+
+Here you will put your app name. Although the app name is MariaDB on the portal, you can personalize the name that is shown on the device's Applications.
+
+**NAMESPACE_NAME**
+This variable is used to create a namespace in Kubernetes. Leave it in blank to install pods on default namespace.
+
+## Using PostgreSQL
+
+---
+
+Use device shell to execute commands using psql client. This command will open psql client in interactive mode.
+
+kubectl exec -it -n <yournamespace> postgres-0 -- psql -U <yourusername> -W
+
+After executing this command, you will be asked for the password you already assign in the Postgres installation.
+
+Then, you can execute psql commands to use the database.
+
+## OS Architectures
+
+---
+
+- Arm64
+
+## Limitations / Known issues
+
+---
+
+## PostgreSQL Platform Video
+
+---
+
+[![Demo Image](http://img.youtube.com/vi/tzbA7VniRpw/0.jpg)](https://youtu.be/tzbA7VniRpw)
+
+## Docs
+
+---
+
+For more information: <https://github.com/docker-library/docs/tree/master/postgres/README.md>

postgres-on-kubernetes/package.json

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+{
+    "name": "postgres-on-kubernetes",
+    "display_name": "postgres-on-kubernetes",
+    "description": "postgres-on-kubernetes",
+    "parameters": [],
+    "main": "postgres-on-kubernetes/run.sh",
+    "dependencies": [
+    "postgres-on-kubernetes/run.sh",
+    "postgres-on-kubernetes/postgres-secret.yaml",
+    "postgres-on-kubernetes/postgres-service.yaml",
+    "postgres-on-kubernetes/postgres-configmap.yaml",
+    "postgres-on-kubernetes/postgres-storage.yaml",
+    "postgres-on-kubernetes/postgres-statefulset.yaml",
+    "utils/cachengo.sh"
+    ]
+  }

postgres-on-kubernetes/postgres-configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: postgres-config
+  labels:
+    app: postgres
+    namespace: #namespace_name#
+data:
+  postgres-url: postgres-service

postgres-on-kubernetes/postgres-secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: postgres-secret
+  namespace: #namespace_name#
+type: Opaque
+stringData:
+  postgres-user: #postgres_user#
+  postgres-password: #postgres_password#

postgres-on-kubernetes/postgres-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres-service
+  namespace: #namespace_name#
+spec:
+  selector:
+    app: postgres
+  ports:
+    - protocol: TCP
+      port: 5432
+      targetPort: 5432
+      nodePort: 32400
+  type: NodePort

postgres-on-kubernetes/postgres-statefulset.yaml

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+# PostgreSQL StatefulSet
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: postgres
+  namespace: #namespace_name#
+spec:
+  serviceName: postgres-service
+  selector:
+    matchLabels:
+      app: postgres-jitsu
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: postgres-jitsu
+    spec:
+      containers:
+        - name: postgres
+          image: postgres:14
+          volumeMounts:
+            - name: postgresdb
+              mountPath: /var/lib/postgresql/data
+              subPath: postgres-data
+          ports:
+            - containerPort: 5432
+          env:
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-secret
+                  key: postgres-password
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-secret
+                  key: postgres-user
+      volumes:
+        - name: postgresdb
+          persistentVolumeClaim:
+            claimName: postgres-pvc

postgres-on-kubernetes/postgres-storage.yaml

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+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name:  postgres-pvc
+  namespace: #namespace_name#
+spec:
+  storageClassName: longhorn
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 30Gi

postgres-on-kubernetes/run.sh

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+#!/bin/bash
+
+source "utils/cachengo.sh"
+source "postgres-on-kubernetes/postgres-secret.yaml"
+source "postgres-on-kubernetes/postgres-service.yaml"
+source "postgres-on-kubernetes/postgres-configmap.yaml"
+source "postgres-on-kubernetes/postgres-storage.yaml"
+source "postgres-on-kubernetes/postgres-statefulset.yaml"
+
+function do_install {
+  set -e
+  cachengo-cli updateInstallStatus "$APPID" "Installing"
+
+  if [ -n "$NAMESPACE_NAME" ]; then
+
+  kubectl create namespace $NAMESPACE_NAME
+  sed -i "s|#namespace_name#|$NAMESPACE_NAME|g" postgres-on-kubernetes/postgres-configmap.yaml
+  sed -i "s|#namespace_name#|$NAMESPACE_NAME|g" postgres-on-kubernetes/postgres-secret.yaml
+  sed -i "s|#namespace_name#|$NAMESPACE_NAME|g" postgres-on-kubernetes/postgres-service.yaml
+  sed -i "s|#namespace_name#|$NAMESPACE_NAME|g" postgres-on-kubernetes/postgres-statefulset.yaml
+  sed -i "s|#namespace_name#|$NAMESPACE_NAME|g" postgres-on-kubernetes/postgres-storage.yaml
+
+  else
+
+  sed -i "s|#namespace_name#|default|g" postgres-on-kubernetes/postgres-configmap.yaml
+  sed -i "s|#namespace_name#|default|g" postgres-on-kubernetes/postgres-secret.yaml
+  sed -i "s|#namespace_name#|default|g" postgres-on-kubernetes/postgres-service.yaml
+  sed -i "s|#namespace_name#|default|g" postgres-on-kubernetes/postgres-statefulset.yaml
+  sed -i "s|#namespace_name#|default|g" postgres-on-kubernetes/postgres-storage.yaml
+
+  fi
+
+  sed -i "s|#postgres_user#|$POSTGRES_USER|g" postgres-on-kubernetes/postgres-secret.yaml
+  sed -i "s|#postgres_password#|$POSTGRES_PASSWORD|g" postgres-on-kubernetes/postgres-secret.yaml
+  kubectl apply -f postgres-on-kubernetes/postgres-secret.yaml
+
+  kubectl apply -f postgres-on-kubernetes/postgres-service.yaml
+  kubectl apply -f postgres-on-kubernetes/postgres-statefulset.yaml
+  kubectl apply -f postgres-on-kubernetes/postgres-configmap.yaml
+  kubectl apply -f postgres-on-kubernetes/postgres-storage.yaml
+
+}
+
+function do_uninstall {
+  cachengo-cli updateInstallStatus "$APPID" "Uninstalling"
+
+  kubectl delete -f postgres-on-kubernetes/postgres-service.yaml
+  kubectl delete -f postgres-on-kubernetes/postgres-secret.yaml  
+  kubectl delete -f postgres-on-kubernetes/postgres-statefulset.yaml
+  kubectl delete -f postgres-on-kubernetes/postgres-configmap.yaml
+  kubectl delete -f postgres-on-kubernetes/postgres-storage.yaml
+
+  cachengo-cli updateInstallStatus "$APPID" "Uninstalled"
+}
+case "$1" in
+ install) do_install ;;
+ uninstall) do_uninstall ;;
+esac