Dingpf/adding postgresql helm chart

adminer/Chart.yaml

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+apiVersion: v2
+name: adminer
+description: Adminer Helm chart for Kubernetes
+type: application
+version: 0.1.0
+appVersion: "latest"

adminer/README.md

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+# Adminer
+
+Adminer is a lightweight, single-file web UI for managing databases such as
+PostgreSQL. This chart deploys Adminer in your Spin namespace.
+
+## Install
+
+```bash
+helm install -n <namespace> <release-name> .
+```
+
+## Configure
+
+Edit `values.yaml` before installing or upgrading.
+
+- `env.ADMINER_DEFAULT_SERVER`: default database host shown in the Adminer UI
+  (e.g. the PostgreSQL Service name like `postgres` or `postgresql`).
+- `env.ADMINER_DESIGN`: UI theme (default `pepa-linha`).
+- `service.port`: Adminer listens on 8080 by default.
+
+## Access after deployment
+
+With `service.type: ClusterIP`, use port-forwarding:
+
+```bash
+kubectl -n <namespace> port-forward svc/<release-name>-adminer 8080:8080
+```
+
+Then open `http://127.0.0.1:8080` in a browser.
+
+If you want external access, add an Ingress (not included in this chart).

adminer/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "adminer.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "adminer.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "adminer.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "adminer.labels" -}}
+helm.sh/chart: {{ include "adminer.chart" . }}
+{{ include "adminer.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "adminer.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "adminer.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

adminer/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "adminer.fullname" . }}
+  labels:
+    {{- include "adminer.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "adminer.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "adminer.labels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.podSecurityContext }}
+      securityContext:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      containers:
+        - name: container-0
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command:
+            {{- toYaml .Values.command | nindent 12 }}
+          args:
+            {{- toYaml .Values.args | nindent 12 }}
+          env:
+            {{- range $key, $value := .Values.env }}
+            - name: {{ $key }}
+              value: {{ $value | quote }}
+            {{- end }}
+          ports:
+            - containerPort: {{ .Values.service.port }}
+              name: adminer-web
+              protocol: TCP
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

adminer/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "adminer.fullname" . }}
+  labels:
+    {{- include "adminer.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: {{ .Values.service.port }}
+      protocol: TCP
+      name: adminer-web
+  selector:
+    {{- include "adminer.selectorLabels" . | nindent 4 }}

adminer/values.yaml

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+# Default values for adminer.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+# Update the placeholders below before installing the chart.
+
+replicaCount: 1
+
+image:
+  repository: adminer
+  pullPolicy: Always
+  tag: latest
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+podAnnotations: {}
+podLabels: {}
+
+podSecurityContext: {}
+
+securityContext:
+  allowPrivilegeEscalation: false
+  capabilities:
+    drop:
+      - ALL
+  privileged: false
+  readOnlyRootFilesystem: false
+  runAsNonRoot: true
+  runAsUser: <your NERSC UID>
+
+command:
+  - php
+args:
+  - "-S"
+  - "0.0.0.0:8080"
+  - "-t"
+  - "/var/www/html"
+
+env:
+  ADMINER_DESIGN: pepa-linha
+  # Name of the PostgreSQL Service in the same namespace; update before installing.
+  ADMINER_DEFAULT_SERVER: "<your-postgres-service-name>"
+
+service:
+  type: ClusterIP
+  port: 8080
+
+resources: {}
+
+nodeSelector: {}
+tolerations: []
+affinity: {}

postgresql/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

postgresql/Chart.yaml

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+apiVersion: v2
+name: postgresql
+description: A PostgreSQL Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into
+# versioned archives to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer.
+# They're included as a dependency of application charts to inject those
+# utilities and functions into the rendering pipeline. Library charts do not
+# define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time
+# you make changes to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version
+# number should be incremented each time you make changes to the application.
+# Versions are not expected to follow Semantic Versioning. They should reflect
+# the version the application is using. It is recommended to use it with quotes.
+appVersion: "18"

postgresql/README.md

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+# PostgreSQL Helm Chart
+
+This chart deploys PostgreSQL on Spin. Update the placeholders in
+`values_template.yaml`, or use the helper script to generate `values.yaml`.
+
+## Prerequisites
+
+- `kubectl` and `helm` installed
+- Access to a Spin namespace and its kubeconfig
+
+See `tls-acme/README.md` for installation steps for kubectl/helm and kubeconfig.
+
+## Configure values
+
+1. Edit `postgresql/prepare-values.sh` with your settings.
+2. Generate a rendered values file:
+
+```bash
+./prepare-values.sh
+```
+
+This writes `values.yaml` (or a custom path if you pass one).
+
+## Quick start
+
+```bash
+cd postgresql
+./prepare-values.sh
+helm lint .
+helm install -n <namespace> <release-name> .
+```
+
+## Install
+
+```bash
+helm install -n <namespace> <release-name> .
+```
+
+## Upgrade or uninstall
+
+```bash
+helm upgrade -n <namespace> <release-name> .
+helm uninstall -n <namespace> <release-name>
+```
+
+## Notes
+
+- Persistent volume size is controlled by `persistentVolumeClaims.<deployment_name>.size` (where `deployment_name` defaults to `psql` in `prepare-values.sh`).
+- Liveness and readiness probes use `pg_isready` with the configured database name and user.

postgresql/prepare-values.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+base_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+values_file="${1:-"${base_dir}/values_template.yaml"}"
+output_file="${2:-"${base_dir}/values.yaml"}"
+
+# Update these values before running this script.
+# Output goes to values.yaml unless you pass a second argument.
+nersc_user_id="<nersc UID>"
+nersc_user_group="<nersc GID>"
+app_name="postgresql"
+version_tag="18"
+deployment_name="psql"
+db_name="<DB_name>"
+db_user_password="<DB_password>"
+db_user_name="user"
+pvc_size="10Gi"
+
+tmp_file="$(mktemp)"
+sed \
+  -e "s|{{nersc_user_id}}|${nersc_user_id}|g" \
+  -e "s|{{nersc_user_group}}|${nersc_user_group}|g" \
+  -e "s|{{app_name}}|${app_name}|g" \
+  -e "s|{{version_tag}}|${version_tag}|g" \
+  -e "s|{{deployment_name}}|${deployment_name}|g" \
+  -e "s|{{db_name}}|${db_name}|g" \
+  -e "s|{{db_user_password}}|${db_user_password}|g" \
+  -e "s|{{db_user_name}}|${db_user_name}|g" \
+  -e "s|{{pvc_size}}|${pvc_size}|g" \
+  "$values_file" > "$tmp_file"
+mv "$tmp_file" "$output_file"

postgresql/templates/NOTES.txt

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+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "postgresql.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "postgresql.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "postgresql.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "postgresql.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}