Kube (#5)

* wip deployment.yml * updating to support k8s * updating deployment for k8s * trying to discover if we are in k8s * more k8s mods * experimenting with changing ports * experimenting with changing ports * experimenting with changing ports * attempts at timeouts
brentley · Sep 18, 2018 · c1d7414 · c1d7414
1 parent af8810e
commit c1d7414
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Showing 7 changed files with 122 additions and 53 deletions.
diff --git a/Dockerfile b/Dockerfile
@@ -3,7 +3,7 @@ FROM ruby:2.5-slim
 COPY Gemfile Gemfile.lock /usr/src/app/
 WORKDIR /usr/src/app
 
-RUN apt-get update && apt-get -y install curl libgmp3-dev ruby-dev build-essential libsqlite3-dev && \
+RUN apt-get update && apt-get -y install curl jq libgmp3-dev ruby-dev build-essential libsqlite3-dev && \
     bundle install && \
     apt-get autoremove -y --purge && \
     apt-get remove -y --auto-remove --purge ruby-dev libgmp3-dev build-essential libsqlite3-dev && \

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
@@ -12,6 +12,8 @@ def index
     begin
       req = Net::HTTP::Get.new(nodejs_uri.to_s)
       res = Net::HTTP.start(nodejs_uri.host, nodejs_uri.port) {|http|
+        http.read_timeout = 2
+        http.open_timeout = 2
         http.request(req)
       }
 
@@ -30,6 +32,8 @@ def index
     begin
       crystalreq = Net::HTTP::Get.new(crystal_uri.to_s)
       crystalres = Net::HTTP.start(crystal_uri.host, crystal_uri.port) {|http|
+        http.read_timeout = 2
+        http.open_timeout = 2
         http.request(crystalreq)
       }
 
@@ -72,6 +76,11 @@ def expand_url(url)
       srv = resolver.getresource(host, Resolv::DNS::Resource::IN::SRV)
       uri.host = srv.target.to_s
       uri.port = srv.port.to_s
+      logger.info "uri port is #{uri.port}"
+      if uri.port == 0
+        uri.port = 80
+        logger.info "uri port is now #{uri.port}"
+      end
     rescue => e
       logger.error e.message
       logger.error e.backtrace.join("\n")

diff --git a/app/views/application/index.html.erb b/app/views/application/index.html.erb
@@ -30,153 +30,153 @@ body {
   <p style="text-align:center;"><%= image_tag "a-N-N.svg" %></p>
 <% end %>
 
-<% if @az =~ /AZ-1a/ and @text =~ /no backend found/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-a/ and @text =~ /no backend found/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "a-N-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /no backend found/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-b/ and @text =~ /no backend found/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "b-N-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /no backend found/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-c/ and @text =~ /no backend found/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "c-N-N.svg" %></p>
 <% end %>
 
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1a/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-a/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "a-a-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1b/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-b/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "a-b-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1c/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-c/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "a-c-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /no backend found/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-a/ and @text =~ /no backend found/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "a-N-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /no backend found/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-a/ and @text =~ /no backend found/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "a-N-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /no backend found/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-a/ and @text =~ /no backend found/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "a-N-c.svg" %></p>
 <% end %>
 
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1a/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-a/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "b-a-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1b/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-b/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "b-b-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1c/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-c/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "b-c-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /no backend found/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-b/ and @text =~ /no backend found/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "b-N-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /no backend found/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-b/ and @text =~ /no backend found/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "b-N-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /no backend found/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-b/ and @text =~ /no backend found/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "b-N-c.svg" %></p>
 <% end %>
 
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1a/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-a/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "c-a-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1b/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-b/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "c-b-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1c/ and @crystal =~ /no backend found/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-c/ and @crystal =~ /no backend found/ %>
   <p style="text-align:center;"><%= image_tag "c-c-N.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /no backend found/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-c/ and @text =~ /no backend found/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "c-N-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /no backend found/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-c/ and @text =~ /no backend found/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "c-N-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /no backend found/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-c/ and @text =~ /no backend found/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "c-N-c.svg" %></p>
 <% end %>
 
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-a/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "a-a-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-a/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "a-a-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-a/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "a-a-c.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-b/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "a-b-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-b/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "a-b-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-b/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "a-b-c.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-c/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "a-c-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-c/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "a-c-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1a/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-a/ and @text =~ /AZ-c/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "a-c-c.svg" %></p>
 <% end %>
 
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-a/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "b-a-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-a/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "b-a-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-a/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "b-a-c.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-b/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "b-b-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-b/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "b-b-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-b/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "b-b-c.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-c/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "b-c-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-c/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "b-c-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1b/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-b/ and @text =~ /AZ-c/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "b-c-c.svg" %></p>
 <% end %>
 
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-a/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "c-a-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-a/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "c-a-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1a/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-a/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "c-a-c.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-b/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "c-b-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-b/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "c-b-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1b/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-b/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "c-b-c.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1a/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-c/ and @crystal =~ /AZ-a/ %>
   <p style="text-align:center;"><%= image_tag "c-c-a.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1b/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-c/ and @crystal =~ /AZ-b/ %>
   <p style="text-align:center;"><%= image_tag "c-c-b.svg" %></p>
 <% end %>
-<% if @az =~ /AZ-1c/ and @text =~ /AZ-1c/ and @crystal =~ /AZ-1c/ %>
+<% if @az =~ /AZ-c/ and @text =~ /AZ-c/ and @crystal =~ /AZ-c/ %>
   <p style="text-align:center;"><%= image_tag "c-c-c.svg" %></p>
 <% end %>
diff --git a/kubernetes/deployment.yaml b/kubernetes/deployment.yaml
@@ -0,0 +1,34 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: ecsdemo-frontend
+  labels:
+    app: ecsdemo-frontend
+  namespace: default
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: ecsdemo-frontend
+  strategy:
+    rollingUpdate:
+      maxSurge: 25%
+      maxUnavailable: 25%
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app: ecsdemo-frontend
+    spec:
+      containers:
+      - image: brentley/ecsdemo-frontend:latest
+        imagePullPolicy: Always
+        name: ecsdemo-frontend
+        ports:
+        - containerPort: 3000
+          protocol: TCP
+        env:
+        - name: CRYSTAL_URL
+          value: "http://ecsdemo-crystal.default.svc.cluster.local/crystal"
+        - name: NODEJS_URL
+          value: "http://ecsdemo-nodejs.default.svc.cluster.local/"
diff --git a/kubernetes/ingress.yaml b/kubernetes/ingress.yaml
@@ -0,0 +1,8 @@
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: ecsdemo-frontend
+spec:
+  backend:
+    serviceName: ecsdemo-frontend
+    servicePort: 80
diff --git a/kubernetes/service.yaml b/kubernetes/service.yaml
@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: ecsdemo-frontend
+spec:
+  selector:
+    app: ecsdemo-frontend
+  type: LoadBalancer
+  ports:
+   -  protocol: TCP
+      port: 3000
+      targetPort: 3000
+
diff --git a/startup.sh b/startup.sh
@@ -7,15 +7,15 @@ NETWORK=$(echo ${IP} | cut -f3 -d.)
 
 case "${NETWORK}" in
   100)
-    zone=1a
+    zone=a
     color=Crimson
     ;;
   101)
-    zone=1b
+    zone=b
     color=CornflowerBlue
     ;;
   102)
-    zone=1c
+    zone=c
     color=LightGreen
     ;;
   *)
@@ -24,9 +24,14 @@ case "${NETWORK}" in
     ;;
 esac
 
+# kubernetes sets routes differently -- so we will discover our IP differently
+if [[ ${IP} == "" ]]; then
+  IP=$(hostname -i)
+fi
+
 # Am I on ec2 instances?
 if [[ ${zone} == "unknown" ]]; then
-  zone=$(curl -m2 -s http://169.254.169.254/latest/dynamic/instance-identity/document | jq -r '.availabilityZone' | cut -f3 -d-)
+  zone=$(curl -m2 -s http://169.254.169.254/latest/dynamic/instance-identity/document | jq -r '.availabilityZone' | grep -o .$)
 fi
 
 export CODE_HASH="$(cat code_hash.txt)"