[blocky] - initial cut of blocky helm chart (#157)

* initial cut of blocky helm chart

* fix linting

* fix more linting

charts/blocky/.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
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
+# OWNERS file for Kubernetes
+OWNERS

charts/blocky/Chart.yaml

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+apiVersion: v1
+appVersion: "v0.5"
+description: DNS proxy as ad-blocker for local network
+name: blocky
+version: 1.0.0
+keywords:
+  - blocky
+  - dbs
+home: https://github.com/billimek/billimek-charts/tree/master/charts/blocky
+icon: https://raw.githubusercontent.com/0xERR0R/blocky/master/docs/blocky.svg
+sources:
+  - https://github.com/0xERR0R/blocky
+maintainers:
+  - name: billimek
+    email: jeff@billimek.com

charts/blocky/OWNERS

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+approvers:
+- billimek
+reviewers:
+- billimek

charts/blocky/README.md

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+# DNS proxy as ad-blocker for local network
+
+This is an opinionated helm chart for [blocky](https://github.com/0xERR0R/blocky) 
+
+The default values and container images used in this chart will allow for running in a multi-arch cluster (amd64, arm, arm64)
+
+## TL;DR;
+
+```shell
+$ helm repo add billimek https://billimek.com/billimek-charts/
+$ helm install billimek/blocky
+```
+
+## Installing the Chart
+
+To install the chart with the release name `my-release`:
+
+```console
+helm install --name blocky billimek/blocky
+```
+
+## Uninstalling the Chart
+
+To uninstall/delete the `blocky` deployment:
+
+```console
+helm delete blocky --purge
+```
+
+The command removes all the Kubernetes components associated with the chart and deletes the release.
+
+## Configuration
+
+Read through the [values.yaml](https://github.com/billimek/billimek-charts/blob/master/charts/blocky/values.yaml) file. It has several commented out suggested values.
+
+Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
+
+```console
+helm install --name blocky \
+  --set timeZone="America/New York" \
+    billimek/blocky
+```
+
+Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
+
+```console
+helm install --name blocky -f values.yaml billimek/blocky
+```

charts/blocky/templates/NOTES.txt

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+1. Get the application URL by running these commands:
+{{- if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "blocky.fullname" . }})
+  export NODE_IP=$(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 the status of by running 'kubectl get svc -w {{ include "blocky.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "blocky.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
+  echo http://$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 "blocky.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -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
+{{- end }}

charts/blocky/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "blocky.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 "blocky.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 a default fully qualified postgresql name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "blocky.postgresql.fullname" -}}
+{{- $name := default "postgresql" .Values.postgresql.nameOverride -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "blocky.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

charts/blocky/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "blocky.fullname" . }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ include "blocky.name" . }}
+    helm.sh/chart: {{ include "blocky.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+data:
+  config.yml: |
+{{ .Values.config | indent 4 }}

charts/blocky/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "blocky.fullname" . }}
+  labels:
+    app.kubernetes.io/name: {{ include "blocky.name" . }}
+    helm.sh/chart: {{ include "blocky.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicas }}
+  revisionHistoryLimit: 3
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "blocky.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: {{ include "blocky.name" . }}
+        app.kubernetes.io/instance: {{ .Release.Name }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            {{- if .Values.timeZone }}
+            - name: TZ
+              value: {{ .Values.timeZone | quote }}
+            {{- end }}
+          volumeMounts:
+            - name: config
+              mountPath: /app/config.yml
+              subPath: config.yml
+            - name: logs
+              mountPath: /logs
+          ports:
+            - name: prometheus
+              containerPort: 4000
+              protocol: TCP
+            - containerPort: 53
+              name: dns
+              protocol: TCP
+            - containerPort: 53
+              name: dns-udp
+              protocol: UDP
+          # livenessProbe:
+          #   httpGet:
+          #     path: /
+          #     port: http
+          #   failureThreshold: {{ .Values.probes.liveness.failureThreshold }}
+          #   periodSeconds: {{ .Values.probes.liveness.periodSeconds }}
+          # readinessProbe:
+          #   httpGet:
+          #     path: /
+          #     port: http
+          #   failureThreshold: {{ .Values.probes.readiness.failureThreshold }}
+          #   periodSeconds: {{ .Values.probes.readiness.periodSeconds }}
+          # startupProbe:
+          #   httpGet:
+          #     path: /
+          #     port: http
+          #   initialDelaySeconds: {{ .Values.probes.startup.initialDelaySeconds }}
+          #   failureThreshold: {{ .Values.probes.startup.failureThreshold }}
+          #   periodSeconds: {{ .Values.probes.startup.periodSeconds }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      volumes:
+        - name: config
+          configMap:
+            name: {{ template "blocky.fullname" . }}
+        - name: logs
+          emptyDir:
+            medium: Memory
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}

charts/blocky/templates/service-prometheus.yaml

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+{{- if .Values.servicePrometheus.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "blocky.fullname" . }}-prometheus
+  labels:
+    app.kubernetes.io/name: {{ include "blocky.name" . }}
+    helm.sh/chart: {{ include "blocky.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: prometheus
+  selector:
+    app.kubernetes.io/name: {{ include "blocky.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

charts/blocky/templates/service-tcp.yaml

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+{{- if .Values.serviceTCP.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "blocky.fullname" . }}-tcp
+  labels:
+    app.kubernetes.io/name: {{ include "blocky.name" . }}
+    helm.sh/chart: {{ include "blocky.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  type: {{ .Values.serviceTCP.type }}
+  {{- if .Values.serviceTCP.loadBalancerIP }}
+  loadBalancerIP: {{ .Values.serviceTCP.loadBalancerIP }}
+  {{- end }}
+  externalTrafficPolicy: {{ .Values.serviceTCP.externalTrafficPolicy }}
+  ports:
+    - port: 53
+      targetPort: dns
+      protocol: TCP
+      name: dns
+  selector:
+    app.kubernetes.io/name: {{ include "blocky.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+

charts/blocky/templates/service-udp.yaml

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+{{- if .Values.serviceUDP.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "blocky.fullname" . }}-udp
+  labels:
+    app.kubernetes.io/name: {{ include "blocky.name" . }}
+    helm.sh/chart: {{ include "blocky.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  type: {{ .Values.serviceUDP.type }}
+  {{- if .Values.serviceUDP.loadBalancerIP }}
+  loadBalancerIP: {{ .Values.serviceUDP.loadBalancerIP }}
+  {{- end }}
+  externalTrafficPolicy: {{ .Values.serviceUDP.externalTrafficPolicy }}
+  ports:
+    - port: 53
+      targetPort: dns-udp
+      protocol: UDP
+      name: dns-udp
+  selector:
+    app.kubernetes.io/name: {{ include "blocky.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

charts/blocky/values.yaml

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+replicaCount: 1
+
+image:
+  repository: spx01/blocky
+  tag: v0.5
+  pullPolicy: IfNotPresent
+
+nameOverride: ""
+fullnameOverride: ""
+
+replicas: 1
+
+timeZone: "UTC"
+
+# blocky configuration
+config: |
+  upstream:
+      # these external DNS resolvers will be used. Blocky picks 2 random resolvers from the list for each query
+      # format for resolver: net:host:[port][/path]. net could be tcp, udp, tcp-tls or https (DoH). If port is empty, default port will be used (53 for udp and tcp, 853 for tcp-tls, 443 for https (Doh))
+      externalResolvers:
+        - udp:8.8.8.8
+        - udp:8.8.4.4
+        - udp:1.1.1.1
+        - tcp-tls:1.0.0.1:853
+        - https://cloudflare-dns.com/dns-query
+
+  # optional: custom IP address for domain name (with all sub-domains)
+  # example: query "printer.lan" or "my.printer.lan" will return 192.168.178.3
+  customDNS:
+      mapping:
+        printer.lan: 192.168.178.3
+
+  # optional: definition, which DNS resolver should be used for queries to the domain (with all sub-domains).
+  # Example: Query client.fritz.box will ask DNS server 192.168.178.1. This is necessary for local network, to resolve clients by host name
+  conditional:
+      mapping:
+        fritz.box: udp:192.168.178.1
+
+  # optional: use black and white lists to block queries (for example ads, trackers, adult pages etc.)
+  blocking:
+      # definition of blacklist groups. Can be external link (http/https) or local file
+      blackLists:
+        ads:
+          - https://s3.amazonaws.com/lists.disconnect.me/simple_ad.txt
+          - https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
+          - https://mirror1.malwaredomains.com/files/justdomains
+          - http://sysctl.org/cameleon/hosts
+          - https://zeustracker.abuse.ch/blocklist.php?download=domainblocklist
+          - https://s3.amazonaws.com/lists.disconnect.me/simple_tracking.txt
+        special:
+          - https://hosts-file.net/ad_servers.txt
+      # definition of whitelist groups. Attention: if the same group has black and whitelists, whitelists will be used to disable particular blacklist entries. If a group has only whitelist entries -> this means only domains from this list are allowed, all other domains will be blocked
+      whiteLists:
+        ads:
+          - whitelist.txt
+      # definition: which groups should be applied for which client
+      clientGroupsBlock:
+        # default will be used, if no special definition for a client name exists
+        default:
+          - ads
+          - special
+        # use client name or ip address
+        laptop.fritz.box:
+          - ads
+      # which response will be sent, if query is blocked:
+      # zeroIp: 0.0.0.0 will be returned (default)
+      # nxDomain: return NXDOMAIN as return code
+      blockType: zeroIp
+      # optional: automatically list refresh period in minutes. Default: 4h.
+      # Negative value -> deactivate automatically refresh.
+      # 0 value -> use default
+      refreshPeriod: 1
+
+  # optional: configuration for caching of DNS responses
+  caching:
+    # amount in minutes, how long a response must be cached (min value).
+    # If <=0, use response's TTL, if >0 use this value, if TTL is smaller
+    # Default: 0
+    minTime: 40
+    # amount in minutes, how long a response must be cached (max value).
+    # If <0, do not cache responses
+    # If 0, use TTL
+    # If > 0, use this value, if TTL is greater
+    # Default: 0
+    maxTime: -1
+
+  # optional: configuration of client name resolution
+  clientLookup:
+      # this DNS resolver will be used to perform reverse DNS lookup (typically local router)
+      upstream: udp:192.168.178.1
+      # optional: some routers return multiple names for client (host name and user defined name). Define which single name should be used.
+      # Example: take second name if present, if not take first name
+      singleNameOrder:
+        - 2
+        - 1
+  # optional: configuration for prometheus metrics endpoint
+  prometheus:
+    # enabled if true
+    enable: true
+    # port, optional (default 4000)
+    # port: 4000
+    # url path, optional (default '/metrics')
+    path: /metrics
+
+  # optional: write query information (question, answer, client, duration etc) to daily csv file
+  queryLog:
+      # directory (should be mounted as volume in docker)
+      dir: /logs
+      # if true, write one file per client. Writes all queries to single file otherwise
+      perClient: true
+      # if > 0, deletes log files which are older than ... days
+      logRetentionDays: 7
+
+  # optional: DNS listener port, default 53 (UDP and TCP)
+  port: 53
+  # optional: HTTP listener port, default 0 = no http listener. If > 0, will be used for prometheus metrics, pprof, ...
+  httpPort: 4000
+  # optional: Log level (one from debug, info, warn, error). Default: info
+  logLevel: info
+
+
+# Probes configuration
+probes:
+  liveness:
+    failureThreshold: 5
+    periodSeconds: 10
+  readiness:
+    failureThreshold: 5
+    periodSeconds: 10
+  startup:
+    initialDelaySeconds: 5
+    failureThreshold: 30
+    periodSeconds: 10
+
+service:
+  type: ClusterIP
+  port: 53
+
+serviceTCP:
+  enabled: false
+  type: NodePort
+  externalTrafficPolicy: Local
+  loadBalancerIP: ""
+    # a fixed LoadBalancer IP
+  annotations: {}
+    # metallb.universe.tf/address-pool: network-services
+    # metallb.universe.tf/allow-shared-ip: blocky-svc
+
+serviceUDP:
+  enabled: true
+  type: NodePort
+  externalTrafficPolicy: Local
+  loadBalancerIP: ""
+    # a fixed LoadBalancer IP
+  annotations: {}
+    # metallb.universe.tf/address-pool: network-services
+    # metallb.universe.tf/allow-shared-ip: blocky-svc
+
+servicePrometheus:
+  enabled: false
+  port: 4000
+  type: ClusterIP
+  externalTrafficPolicy: Local
+  loadBalancerIP: ""
+    # a fixed LoadBalancer IP
+  annotations: {}
+
+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: {}