This add make target to deploy a dev version using helm

Makefile

@@ -222,6 +222,7 @@ push-latest:
 	done
 
 helm:
+	-rm -f production/helm/*/requirements.lock
 	@set -e; \
 	helm init -c; \
 	for chart in $(CHARTS); do \
@@ -258,3 +259,19 @@ check_assets: assets
 		echo "Run 'make assets' and commit the changes to fix the error."; \
 		exit 1; \
 	fi
+
+helm-install:
+	kubectl apply -f tools/helm.yaml
+	helm init --wait --service-account helm --upgrade
+	$(MAKE) upgrade-helm
+
+helm-debug: ARGS=--dry-run --debug
+helm-debug: helm-upgrade
+
+helm-upgrade: helm
+	helm upgrade --wait --install $(ARGS) loki-stack ./production/helm/loki-stack \
+	--set promtail.image.tag=$(IMAGE_TAG) --set loki.image.tag=$(IMAGE_TAG) -f tools/dev.values.yaml
+
+
+helm-clean:
+	-helm delete --purge loki-stack

production/helm/README.md

@@ -119,3 +119,6 @@ For example, if you update the loki chart, you need to bump the version as follo
 ```bash
 $ # update version loki/Chart.yaml
 $ # update version loki-stack/Chart.yaml
+```
+
+You can use the `make helm-debug` to test and print out all chart templates. If you want to install helm (tiller) in your cluster use `make helm-install`, to install the current build in your Kubernetes cluster run `make helm-upgrade`.

production/helm/loki-stack/Chart.yaml

@@ -1,5 +1,5 @@
 name: loki-stack
-version: 0.9.3
+version: 0.9.4
 appVersion: 0.0.1
 kubeVersion: "^1.10.0-0"
 description: "Loki: like Prometheus, but for logs."

production/helm/loki-stack/requirements.yaml

@@ -7,4 +7,11 @@ dependencies:
   condition: promtail.enabled
   repository: "file://../promtail"
   version: "^0.6.0"
-
+- name: "grafana"
+  condition: grafana.enabled
+  version: "~3.3.7"
+  repository:  "https://kubernetes-charts.storage.googleapis.com/"
+- name: "prometheus"
+  condition: prometheus.enabled
+  version: "~8.11.2"
+  repository:  "https://kubernetes-charts.storage.googleapis.com/"

production/helm/loki-stack/templates/_helpers.tpl

@@ -0,0 +1,32 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "loki-stack.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 "loki-stack.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 "loki-stack.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

production/helm/loki-stack/templates/datasources.yaml

@@ -0,0 +1,30 @@
+{{- if and .Values.grafana.enabled .Values.grafana.sidecar.datasources.enabled }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "loki-stack.fullname" . }}
+  labels:
+    app: {{ template "loki-stack.name" . }}
+    chart: {{ template "loki-stack.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+    grafana_datasource: "1"
+data:
+  loki-stack-datasource.yaml: |-
+    apiVersion: 1
+    datasources:
+{{- if .Values.loki.enabled }}
+    - name: Loki
+      type: loki
+      access: proxy
+      url: http://{{(include "loki.serviceName" .)}}:{{ .Values.loki.service.port }}
+      version: 1
+{{- end }}
+{{- if .Values.prometheus.enabled }}
+    - name: Prometheus
+      type: prometheus
+      access: proxy
+      url: http://{{ .Values.prometheus.server.fullnameOverride }}:{{ .Values.prometheus.server.service.servicePort }}
+      version: 1
+{{- end }}
+{{- end }}

production/helm/loki-stack/values.yaml

@@ -4,3 +4,13 @@ loki:
 promtail:
   enabled: true
 
+grafana:
+  enabled: false
+  sidecar:
+    datasources:
+      enabled: true
+
+prometheus:
+  enabled: false
+  server:
+    fullnameOverride: prometheus-server

production/helm/loki/values.yaml

@@ -103,9 +103,9 @@ persistence:
 podLabels: {}
 
 ## Pod Annotations
-podAnnotations: {}
-#  prometheus.io/scrape: "true"
-#  prometheus.io/port: "http-metrics"
+podAnnotations:
+ prometheus.io/scrape: "true"
+ prometheus.io/port: "http-metrics"
 
 ## Assign a PriorityClassName to pods if set
 # priorityClassName:

production/helm/promtail/values.yaml

@@ -32,9 +32,9 @@ pipelineStages:
 ## Pod Labels
 podLabels: {}
 
-podAnnotations: {}
-#  prometheus.io/scrape: "true"
-#  prometheus.io/port: "http-metrics"
+podAnnotations: 
+ prometheus.io/scrape: "true"
+ prometheus.io/port: "http-metrics"
 
 # This should match config.server.http_listen_port
 port: 3101

tools/dev.values.yaml

@@ -0,0 +1,25 @@
+grafana:
+  enabled: true
+  service:
+    type: LoadBalancer
+    port: 3000
+  adminPassword: admin
+
+prometheus:
+  enabled: true
+  pushgateway:
+    enabled: false
+  server:
+    service:
+      type: LoadBalancer
+      servicePort: 9090
+
+promtail:
+  image:
+    pullPolicy: Never
+
+loki:
+  image:
+    pullPolicy: Never
+  service:
+    type: LoadBalancer

tools/helm.yaml

@@ -0,0 +1,37 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: helm
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: helm
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: cluster-admin
+subjects:
+  - kind: ServiceAccount
+    name: helm
+    namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  creationTimestamp: null
+  name: cluster-admin
+  annotations:
+    rbac.authorization.kubernetes.io/autoupdate: "true"
+rules:
+- apiGroups:
+  - '*'
+  resources:
+  - '*'
+  verbs:
+  - '*'
+- nonResourceURLs:
+  - '*'
+  verbs:
+  - '*'