new chart - ser2sock (#86)

* new chart - ser2sock

Signed-off-by: Jeff Billimek <jeff@billimek.com>

* fix notes

* more notes fixes

ser2sock/.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

ser2sock/Chart.yaml

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+apiVersion: v1
+appVersion: "1.0.0"
+description: Serial to Socket Redirector
+name: ser2sock
+version: 0.0.1
+keywords:
+  - ser2sock
+home: https://github.com/billimek/billimek-charts/tree/master/ser2sock
+icon: https://i.imgur.com/GfZ7McO.png
+sources:
+  - https://github.com/nutechsoftware/ser2sock
+  - https://github.com/tenstartups/ser2sock
+maintainers:
+  - name: billimek
+    email: jeff@billimek.com

ser2sock/OWNERS

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

ser2sock/README.md

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+# ser2sock: Serial to Socket Redirector
+
+This is a helm chart for [ser2sock](https://github.com/nutechsoftware/ser2sock)
+
+## TL;DR;
+
+```shell
+$ helm repo add billimek https://billimek.com/billimek-charts/
+$ helm install billimek/ser2sock
+```
+
+## Installing the Chart
+
+To install the chart with the release name `my-release`:
+
+```console
+helm install --name my-release billimek/ser2sock
+```
+
+**IMPORTANT NOTE:** the USB device must be accessible on the node where this pod runs, in order for this chart to function properly.
+
+A way to achieve this can be with nodeAffinity rules, for example:
+
+```yaml
+affinity:
+  nodeAffinity:
+    requiredDuringSchedulingIgnoredDuringExecution:
+      nodeSelectorTerms:
+      - matchExpressions:
+        - key: usb
+          operator: In
+          values:
+          - alarmdecoder
+```
+
+... where a node with an attached Coral USB device is labeled with `usb: alarmdecoder`
+
+## Uninstalling the Chart
+
+To uninstall/delete the `my-release` deployment:
+
+```console
+helm delete my-release --purge
+```
+
+The command removes all the Kubernetes components associated with the chart and deletes the release.
+
+## Configuration
+
+The following tables lists the configurable parameters of the Sentry chart and their default values.
+
+| Parameter                  | Description                         | Default                                                 |
+|----------------------------|-------------------------------------|---------------------------------------------------------|
+| `image.repository`         | Image repository | `tenstartups/ser2sock` |
+| `image.tag`                | Image tag. Possible values listed [here](https://hub.docker.com/r/tenstartups/ser2sock/tags).| `latest`|
+| `image.pullPolicy`         | Image pull policy | `IfNotPresent` |
+| `strategyType`             | Specifies the strategy used to replace old Pods by new ones | `Recreate` |
+| `timezone`                 | Timezone the ser2sock instance should run as, e.g. 'America/New_York' | `` |
+| `device`             | USB Device to use | `/dev/ttyUSB0` |
+| `puid`             | UID to run as | `1001` |
+| `pgid`             | GID to run as | `1001` |
+| `Service.type`          | Kubernetes service type for the ser2sock GUI | `ClusterIP` |
+| `Service.port`          | Kubernetes port where the ser2sock GUI is exposed| `5000` |
+| `Service.annotations`   | Service annotations for the ser2sock GUI | `{}` |
+| `Service.labels`        | Custom labels | `{}` |
+| `Service.loadBalancerIP` | Loadbalance IP for the ser2sock GUI | `{}` |
+| `Service.loadBalancerSourceRanges` | List of IP CIDRs allowed access to load balancer (if supported)      | None
+| `resources`                | CPU/Memory resource requests/limits | `{}` |
+| `nodeSelector`             | Node labels for pod assignment | `{}` |
+| `tolerations`              | Toleration labels for pod assignment | `[]` |
+| `affinity`                 | Affinity settings for pod assignment | `{}` |
+
+Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
+
+```console
+helm install --name my-release \
+    billimek/ser2sock
+```
+
+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 my-release -f values.yaml billimek/ser2sock
+```
+
+Read through the [values.yaml](https://github.com/billimek/billimek-charts/blob/master/ser2sock/values.yaml) file. It has several commented out suggested values.

ser2sock/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=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "ser2sock.fullname" . }})
+  export NODE_IP=$(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 "ser2sock.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "ser2sock.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
+  echo http://$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 "ser2sock.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:5000 to use your application"
+  kubectl port-forward $POD_NAME 5000:5000
+{{- end }}

ser2sock/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "ser2sock.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 "ser2sock.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 "ser2sock.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Common labels
+*/}}
+{{- define "ser2sock.labels" -}}
+app.kubernetes.io/name: {{ include "ser2sock.name" . }}
+helm.sh/chart: {{ include "ser2sock.chart" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}

ser2sock/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "ser2sock.fullname" . }}
+  labels:
+{{ include "ser2sock.labels" . | indent 4 }}
+spec:
+  replicas: 1
+  strategy:
+    type: {{ .Values.strategyType }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "ser2sock.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: {{ include "ser2sock.name" . }}
+        app.kubernetes.io/instance: {{ .Release.Name }}
+      {{- if .Values.podAnnotations }}
+      annotations:
+        {{- range $key, $value := .Values.podAnnotations }}
+        {{ $key }}: {{ $value | quote }}
+        {{- end }}
+      {{- end }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          securityContext:
+            privileged: true
+          ports:
+            - name: http
+              containerPort: 10000
+              protocol: TCP
+          livenessProbe:
+            tcpSocket:
+              port: http
+            initialDelaySeconds: 30
+            failureThreshold: 5
+            timeoutSeconds: 5
+          readinessProbe:
+            tcpSocket:
+              port: http
+            initialDelaySeconds: 30
+            failureThreshold: 5
+            timeoutSeconds: 5
+          env:
+            {{- if .Values.timezone }}
+            - name: TZ
+              value: "{{ .Values.timezone }}"
+            {{- end }}
+            - name: LISTENER_PORT
+              value: "10000"
+            - name: BAUD_RATE
+              value: "115200"
+            - name: SERIAL_DEVICE
+              value: "{{ .Values.device }}"
+            - name: PUID
+              value: "{{ .Values.puid }}"
+            - name: PGID
+              value: "{{ .Values.pgid }}"
+          volumeMounts:
+            - mountPath: /dev/ttyUSB0
+              name: usb
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      volumes:
+        - name: usb
+          hostPath:
+            path: {{ .Values.device }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}

ser2sock/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "ser2sock.fullname" . }}
+  labels:
+{{ include "ser2sock.labels" . | indent 4 }}
+{{- if .Values.service.labels }}
+{{ toYaml .Values.service.labels | indent 4 }}
+{{- end }}
+{{- with .Values.service.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+{{- if (or (eq .Values.service.type "ClusterIP") (empty .Values.service.type)) }}
+  type: ClusterIP
+  {{- if .Values.service.clusterIP }}
+  clusterIP: {{ .Values.service.clusterIP }}
+  {{end}}
+{{- else if eq .Values.service.type "LoadBalancer" }}
+  type: {{ .Values.service.type }}
+  {{- if .Values.service.loadBalancerIP }}
+  loadBalancerIP: {{ .Values.service.loadBalancerIP }}
+  {{- end }}
+  {{- if .Values.service.loadBalancerSourceRanges }}
+  loadBalancerSourceRanges:
+{{ toYaml .Values.service.loadBalancerSourceRanges | indent 4 }}
+  {{- end -}}
+{{- else }}
+  type: {{ .Values.service.type }}
+{{- end }}
+{{- if .Values.service.externalIPs }}
+  externalIPs:
+{{ toYaml .Values.service.externalIPs | indent 4 }}
+{{- end }}
+  {{- if .Values.service.externalTrafficPolicy }}
+  externalTrafficPolicy: {{ .Values.service.externalTrafficPolicy }}
+  {{- end }}
+  ports:
+    - name: http
+      port: {{ .Values.service.port }}
+      protocol: TCP
+      targetPort: http
+{{ if (and (eq .Values.service.type "NodePort") (not (empty .Values.service.nodePort))) }}
+      nodePort: {{.Values.service.nodePort}}
+{{ end }}
+  selector:
+    app.kubernetes.io/name: {{ include "ser2sock.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}

ser2sock/values.yaml

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+# Default values for ser2sock.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+# upgrade strategy type (e.g. Recreate or RollingUpdate)
+strategyType: Recreate
+
+image:
+  repository: tenstartups/ser2sock
+  tag: latest
+  pullPolicy: IfNotPresent
+
+nameOverride: ""
+fullnameOverride: ""
+
+# timezone: "America/New York"
+device: "/dev/ttyUSB0"
+puid: "1001"
+pgid: "1001"
+
+service:
+  type: ClusterIP
+  port: 10000
+  ## Specify the nodePort value for the LoadBalancer and NodePort service types.
+  ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
+  ##
+  # nodePort:
+  ## Provide any additional annotations which may be required. This can be used to
+  ## set the LoadBalancer service type to internal only.
+  ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
+  ##
+  annotations: {}
+  labels: {}
+  ## Use loadBalancerIP to request a specific static IP,
+  ## otherwise leave blank
+  ##
+  loadBalancerIP:
+  # loadBalancerSourceRanges: []
+  ## Set the externalTrafficPolicy in the Service to either Cluster or Local
+  # externalTrafficPolicy: Cluster
+
+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: {}
+
+podAnnotations: {}