From d09c32c1de891ebbe9225ca6f027e621163b656f Mon Sep 17 00:00:00 2001
From: Brad <Brad@DevOpsJourney>
Date: Wed, 14 Dec 2022 22:18:50 -0800
Subject: [PATCH] yolo

---
 kustom-webapp/README.md                       | 40 +++++++++++++++++++
 kustom-webapp/base/deployment.yaml            | 23 +++++++++++
 kustom-webapp/base/kustomization.yaml         | 15 +++++++
 kustom-webapp/base/service.yaml               | 10 +++++
 kustom-webapp/overlays/dev/config.properties  |  3 ++
 kustom-webapp/overlays/dev/kustomization.yaml |  9 +++++
 kustom-webapp/overlays/dev/replicas.yaml      |  6 +++
 kustom-webapp/overlays/prod/config.properties |  3 ++
 .../overlays/prod/kustomization.yaml          |  9 +++++
 kustom-webapp/overlays/prod/replicas.yaml     |  6 +++
 10 files changed, 124 insertions(+)
 create mode 100644 kustom-webapp/README.md
 create mode 100644 kustom-webapp/base/deployment.yaml
 create mode 100644 kustom-webapp/base/kustomization.yaml
 create mode 100644 kustom-webapp/base/service.yaml
 create mode 100644 kustom-webapp/overlays/dev/config.properties
 create mode 100644 kustom-webapp/overlays/dev/kustomization.yaml
 create mode 100644 kustom-webapp/overlays/dev/replicas.yaml
 create mode 100644 kustom-webapp/overlays/prod/config.properties
 create mode 100644 kustom-webapp/overlays/prod/kustomization.yaml
 create mode 100644 kustom-webapp/overlays/prod/replicas.yaml

diff --git a/kustom-webapp/README.md b/kustom-webapp/README.md
new file mode 100644
index 0000000..47fa2b3
--- /dev/null
+++ b/kustom-webapp/README.md
@@ -0,0 +1,40 @@
+# Installation
+```
+kubectl version
+```
+*If you have 1.21 or above of kubectl you will have access to kubectl kustomize which is the recommended method. If you aren't on version 1.21 or above, upgrade kubectl.
+*You could also download/use the 'kutomize' binary seperatly but the cmds are different.
+
+
+# Viewing Kustomize Configs - (Using kubectl kustomize integration)
+```
+kubectl kustomize .
+kubectl kustomize overlays/dev/
+kubectl kustomize overlays/prod/
+```
+
+# Applying Kustomize Configs - (Using kubectl kustomize integration)
+```
+kubectl apply -k .
+kubectl apply -k overlays/dev/
+kubectl apply -k overlays/prod/
+```
+Note: if you get field is immutable error, check your configuration and try deleting the resources.
+
+
+# Creating Namespaces if you dont have them already
+```
+kubectl create namespace dev; kubectl create namespace prod;
+```
+
+
+# Accessing the application
+```
+minikube service kustom-mywebapp-v1
+minikube service kustom-mywebapp-v1 -n dev
+minikube service kustom-mywebapp-v1 -n prod
+```
+
+# References:
+https://github.com/kubernetes-sigs/kustomize/blob/master/README.md
+https://kubectl.docs.kubernetes.io/guides/config_management/offtheshelf/
diff --git a/kustom-webapp/base/deployment.yaml b/kustom-webapp/base/deployment.yaml
new file mode 100644
index 0000000..dc11465
--- /dev/null
+++ b/kustom-webapp/base/deployment.yaml
@@ -0,0 +1,23 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mywebapp
+spec:
+  replicas: 1
+  template:
+    spec: # Pod spec
+      containers:
+      - name: mycontainer
+        image: "devopsjourney1/mywebapp:latest"
+        ports:
+        - containerPort: 80
+        envFrom:
+        - configMapRef:
+            name: mykustom-map
+        resources:
+          requests:
+            memory: "16Mi" 
+            cpu: "50m"    # 500milliCPUs (1/2 CPU)
+          limits:
+            memory: "128Mi"
+            cpu: "100m"
\ No newline at end of file
diff --git a/kustom-webapp/base/kustomization.yaml b/kustom-webapp/base/kustomization.yaml
new file mode 100644
index 0000000..7c0ea2d
--- /dev/null
+++ b/kustom-webapp/base/kustomization.yaml
@@ -0,0 +1,15 @@
+resources:
+- deployment.yaml
+- service.yaml
+
+commonLabels:
+  app: kustomwebapp
+
+commonAnnotations:
+  app: mykustom-annontations
+
+namePrefix:
+  kustom-
+
+nameSuffix:
+  -v1
\ No newline at end of file
diff --git a/kustom-webapp/base/service.yaml b/kustom-webapp/base/service.yaml
new file mode 100644
index 0000000..b69d9ef
--- /dev/null
+++ b/kustom-webapp/base/service.yaml
@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: mywebapp
+spec:
+  ports:
+  - port: 80
+    protocol: TCP
+    name: flask
+  type: NodePort
\ No newline at end of file
diff --git a/kustom-webapp/overlays/dev/config.properties b/kustom-webapp/overlays/dev/config.properties
new file mode 100644
index 0000000..06e6fd9
--- /dev/null
+++ b/kustom-webapp/overlays/dev/config.properties
@@ -0,0 +1,3 @@
+BG_COLOR=#12181b
+FONT_COLOR=#FFFFFF
+CUSTOM_HEADER=Welcome to the DEV environment
\ No newline at end of file
diff --git a/kustom-webapp/overlays/dev/kustomization.yaml b/kustom-webapp/overlays/dev/kustomization.yaml
new file mode 100644
index 0000000..21c1717
--- /dev/null
+++ b/kustom-webapp/overlays/dev/kustomization.yaml
@@ -0,0 +1,9 @@
+bases:
+- ../../base
+
+patches:
+ - replicas.yaml
+
+configMapGenerator:
+- name: mykustom-map
+  env: config.properties
\ No newline at end of file
diff --git a/kustom-webapp/overlays/dev/replicas.yaml b/kustom-webapp/overlays/dev/replicas.yaml
new file mode 100644
index 0000000..55216e0
--- /dev/null
+++ b/kustom-webapp/overlays/dev/replicas.yaml
@@ -0,0 +1,6 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mywebapp
+spec:
+  replicas: 2
\ No newline at end of file
diff --git a/kustom-webapp/overlays/prod/config.properties b/kustom-webapp/overlays/prod/config.properties
new file mode 100644
index 0000000..1bb4fc2
--- /dev/null
+++ b/kustom-webapp/overlays/prod/config.properties
@@ -0,0 +1,3 @@
+BG_COLOR=#12181b
+FONT_COLOR=#FFFFFF
+CUSTOM_HEADER=Welcome to the PROD environment
\ No newline at end of file
diff --git a/kustom-webapp/overlays/prod/kustomization.yaml b/kustom-webapp/overlays/prod/kustomization.yaml
new file mode 100644
index 0000000..21c1717
--- /dev/null
+++ b/kustom-webapp/overlays/prod/kustomization.yaml
@@ -0,0 +1,9 @@
+bases:
+- ../../base
+
+patches:
+ - replicas.yaml
+
+configMapGenerator:
+- name: mykustom-map
+  env: config.properties
\ No newline at end of file
diff --git a/kustom-webapp/overlays/prod/replicas.yaml b/kustom-webapp/overlays/prod/replicas.yaml
new file mode 100644
index 0000000..2e928bb
--- /dev/null
+++ b/kustom-webapp/overlays/prod/replicas.yaml
@@ -0,0 +1,6 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mywebapp
+spec:
+  replicas: 5
\ No newline at end of file