migrate to kubernetes and helm

sergey-koba-mobidev · Dec 15, 2018 · c671822 · c671822
1 parent 8c1d333
commit c671822
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diff --git a/admin/Dockerfile.prod b/admin/Dockerfile.prod
@@ -0,0 +1,34 @@
+FROM ruby:2.5.0-alpine as builder
+
+# Pg
+RUN apk --update --upgrade add postgresql-dev nodejs git build-base libffi-dev libgcc
+RUN npm install -g bower
+RUN echo '{ "allow_root": true }' > /root/.bowerrc
+
+ENV APP_ROOT /app
+RUN mkdir $APP_ROOT
+WORKDIR $APP_ROOT
+
+# Bundle
+COPY . /app
+RUN gem update bundler && bundle install --jobs 4 && rm -rf /usr/local/bundle/cache/*.gem \
+ && find /usr/local/bundle/gems/ -name "*.c" -delete \
+ && find /usr/local/bundle/gems/ -name "*.o" -delete
+
+# Run bower
+WORKDIR $APP_ROOT/public
+RUN bower install
+
+FROM ruby:2.5.0-alpine
+
+#Pg
+RUN apk --update --upgrade add postgresql-dev && rm -rf /var/cache/apk/*
+
+ENV APP_ROOT /app
+RUN mkdir $APP_ROOT
+WORKDIR $APP_ROOT
+
+COPY --from=builder /usr/local/bundle /usr/local/bundle
+COPY --from=builder /app /app
+
+EXPOSE 3000
diff --git a/admin/init/db.rb b/admin/init/db.rb
@@ -5,6 +5,11 @@
 db_config_file = File.join(File.dirname(__FILE__), 'config', 'database.yml')
 if File.exist?(db_config_file)
   config = YAML.load(File.read(db_config_file))
+  # Override db config with env vars
+  config["host"] = ENV['POSTGRES_HOST'] unless ENV['POSTGRES_HOST'] == nil
+  config["database"] = ENV['POSTGRES_DB'] unless ENV['POSTGRES_DB'] == nil
+  config["user"] = ENV['POSTGRES_USER'] unless ENV['POSTGRES_USER'] == nil
+  config["password"] = ENV['POSTGRES_PASSWORD'] unless ENV['POSTGRES_PASSWORD'] == nil
   DB = Sequel.connect(config)
   Sequel.extension :migration
   Sequel.extension :pagination

diff --git a/admin/lib/constants.rb b/admin/lib/constants.rb
@@ -1,11 +1,11 @@
 module Constants
   def self.frontend_url
-    return 'http://1devblog.org' if ENV['RACK_ENV'] == 'production'
+    return 'https://1devblog.org' if ENV['RACK_ENV'] == 'production'
     return 'http://localhost:3001'
   end
 
   def self.frontend_api_url
-    return 'http://1devblog.org/api' if ENV['RACK_ENV'] == 'production'
+    return 'https://1devblog.org/api' if ENV['RACK_ENV'] == 'production'
     return 'http://front:3001/api'
   end
 

diff --git a/bin/deploy.sh b/bin/deploy.sh
@@ -1,14 +1,16 @@
 #!/usr/bin/env bash
+
+UNIXTIME=$(date +%s)
+
 cd ./front
-docker build -f Dockerfile -t sergkoba/blog:latest .
-docker push sergkoba/blog:latest
+docker build -f Dockerfile.prod -t repo.treescale.com/skoba/blog:build-$UNIXTIME .
+docker push repo.treescale.com/skoba/blog:build-$UNIXTIME
 
 cd ../admin
-docker build -f Dockerfile -t sergkoba/blog:latest-admin .
-docker push sergkoba/blog:latest-admin
+docker build -f Dockerfile.prod -t repo.treescale.com/skoba/blog-admin:build-$UNIXTIME .
+docker push repo.treescale.com/skoba/blog-admin:build-$UNIXTIME
 
 cd ..
-rancher up -d -u -c -p
-
-rancher exec admin bundle exec ./cli db_migrate
-rancher exec front bundle exec ./cli sitemap_generate
+helm upgrade -i --set image.tag=build-$UNIXTIME --wait --namespace default blog ./chart
+ADMIN_POD=$(kubectl get pods -l app.kubernetes.io/name=blog-admin --output=jsonpath={.items..metadata.name})
+kubectl exec $ADMIN_POD bundle exec ./cli db_migrate
diff --git a/chart/.helmignore b/chart/.helmignore
@@ -0,0 +1,21 @@
+# 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
diff --git a/chart/Chart.yaml b/chart/Chart.yaml
@@ -0,0 +1,5 @@
+apiVersion: v1
+appVersion: "1.0"
+description: A Helm chart for 1devblog
+name: blog
+version: 0.1.0
diff --git a/chart/templates/NOTES.txt b/chart/templates/NOTES.txt
diff --git a/chart/templates/_helpers.tpl b/chart/templates/_helpers.tpl
@@ -0,0 +1,32 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "chart.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 "chart.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 "chart.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
diff --git a/chart/templates/admin_deployment.yaml b/chart/templates/admin_deployment.yaml
@@ -0,0 +1,50 @@
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: "{{ include "chart.fullname" . }}-admin-deployment"
+  labels:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-admin"
+    helm.sh/chart: {{ include "chart.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: "{{ include "chart.name" . }}-admin"
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: "{{ include "chart.name" . }}-admin"
+        app.kubernetes.io/instance: {{ .Release.Name }}
+    spec:
+      containers:
+        - name: "{{ .Chart.Name }}-admin"
+          image: "{{ .Values.image.repository }}-admin:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command: ["rackup", "--port", "3000", "--host", "0.0.0.0"]
+          env:
+            - name: RACK_ENV
+              value: "production"
+            - name: POSTGRES_HOST
+              value: "{{ .Chart.Name }}-postgres-service"
+          envFrom:
+            - secretRef:
+                name: "{{ include "chart.name" . }}-postgres-secret"
+            - secretRef:
+                name: "{{ include "chart.name" . }}-api-secret"
+          ports:
+            - name: http
+              containerPort: 3000
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+      imagePullSecrets:
+        - name: regcred
diff --git a/chart/templates/admin_service.yaml b/chart/templates/admin_service.yaml
@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: "{{ include "chart.fullname" . }}-admin-service"
+  labels:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-admin-service"
+    helm.sh/chart: {{ include "chart.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: 3000
+      protocol: TCP
+      name: http
+  selector:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-admin"
+    app.kubernetes.io/instance: {{ .Release.Name }}
diff --git a/chart/templates/api_secret.yaml b/chart/templates/api_secret.yaml
@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: "{{ include "chart.name" . }}-api-secret"
+  labels:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-api-secret"
+    helm.sh/chart: {{ include "chart.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+type: Opaque
+data:
+  API_TOKEN: "RnJPTU9SMlhKTlNCMVloeDFNRDRDNGt0NGRTek1lRDQ="
diff --git a/chart/templates/front_deployment.yaml b/chart/templates/front_deployment.yaml
@@ -0,0 +1,50 @@
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: "{{ include "chart.fullname" . }}-front-deployment"
+  labels:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-front"
+    helm.sh/chart: {{ include "chart.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: "{{ include "chart.name" . }}-front"
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: "{{ include "chart.name" . }}-front"
+        app.kubernetes.io/instance: {{ .Release.Name }}
+    spec:
+      containers:
+        - name: "{{ .Chart.Name }}-front"
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command: ["rackup", "--port", "3001", "--host", "0.0.0.0"]
+          env:
+            - name: RACK_ENV
+              value: "production"
+            - name: POSTGRES_HOST
+              value: "{{ .Chart.Name }}-postgres-service"
+          envFrom:
+            - secretRef:
+                name: "{{ include "chart.name" . }}-postgres-secret"
+            - secretRef:
+                name: "{{ include "chart.name" . }}-api-secret"
+          ports:
+            - name: http
+              containerPort: 3001
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+      imagePullSecrets:
+        - name: regcred
diff --git a/chart/templates/front_service.yaml b/chart/templates/front_service.yaml
@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: "{{ include "chart.fullname" . }}-front-service"
+  labels:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-front-service"
+    helm.sh/chart: {{ include "chart.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: 3001
+      protocol: TCP
+      name: http
+  selector:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-front"
+    app.kubernetes.io/instance: {{ .Release.Name }}
diff --git a/chart/templates/postgres_deployment.yaml b/chart/templates/postgres_deployment.yaml
@@ -0,0 +1,54 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: "{{ include "chart.fullname" . }}-postgres-service"
+  labels:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-postgres-service"
+    helm.sh/chart: {{ include "chart.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  ports:
+    - port: 5432
+  selector:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-postgres"
+    app.kubernetes.io/instance: {{ .Release.Name }}
+---
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: "{{ include "chart.fullname" . }}-postgres-deployment"
+  labels:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-postgres"
+    helm.sh/chart: {{ include "chart.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: "{{ include "chart.name" . }}-postgres"
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: "{{ include "chart.name" . }}-postgres"
+        app.kubernetes.io/instance: {{ .Release.Name }}
+    spec:
+      containers:
+      - image: postgres:11.1
+        name: "{{ .Chart.Name }}-postgres"
+        ports:
+        - containerPort: 5432
+          name: postgres
+        volumeMounts:
+        - name: "{{ include "chart.name" . }}-postgres-persistent-storage"
+          mountPath: /var/lib/postgresql/data
+        envFrom:
+          - secretRef:
+              name: "{{ include "chart.name" . }}-postgres-secret"
+      volumes:
+      - name: "{{ include "chart.name" . }}-postgres-persistent-storage"
+        persistentVolumeClaim:
+          claimName: "{{ include "chart.name" . }}-postgres-pv-claim"
diff --git a/chart/templates/postgres_pv.yaml b/chart/templates/postgres_pv.yaml
@@ -0,0 +1,35 @@
+kind: PersistentVolume
+apiVersion: v1
+metadata:
+  name: "{{ include "chart.name" . }}-postgres-pv-volume"
+  labels:
+    type: local
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-postgres-pv-volume"
+    helm.sh/chart: {{ include "chart.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  storageClassName: manual
+  capacity:
+    storage: 3Gi
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: "/mnt/data"
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: "{{ include "chart.name" . }}-postgres-pv-claim"
+  labels:
+    app.kubernetes.io/name: "{{ include "chart.name" . }}-postgres-pv-claim"
+    helm.sh/chart: {{ include "chart.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  storageClassName: manual
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 3Gi