added

k8s/config_map

@@ -0,0 +1,82 @@
+kubectl create deploy nginx --image nginx --dry-run=client -o yaml >nginx-deploy.yaml
+vi nginx-deploy.yaml
+# add volume mounts and volumes from configMap
+
+# create config Map
+echo Linuxhotel >index.html
+
+kubectl create configmap htdocs --from-file index.html=index.html --dry-run=client -o yaml >htdocs-cm.yaml
+
+kubectl -n nginx apply -f htdocs-cm.yaml 
+kubectl -n nginx apply -f nginx-deploy.yaml
+
+kubectl -n nginx exec -ti nginx-6fc76484c-q8tmd -- /bin/sh
+# more /usr/share/nginx/html/index.html
+
+kubectl edit -n nginx cm htdocs
+# change content
+apiVersion: v1
+data:
+  index.html: |
+    Linuxhotel Cloud Native Base Camp
+kind: ConfigMap
+metadata:
+  name: htdocs
+
+# See it change at running pods!
+
+kubectl -n nginx exec -ti nginx-6fc76484c-q8tmd -- /bin/sh
+# more /usr/share/nginx/html/index.html
+Linuxhotel Cloud Native Base Camp
+
+
+
+
+htdocs-cm.yaml
+
+    apiVersion: v1
+    data:
+      index.html: |
+        Linuxhotel
+    kind: ConfigMap
+    metadata:
+      creationTimestamp: null
+      name: htdocs
+
+
+
+
+nginx-deploy.yaml
+
+    apiVersion: apps/v1
+    kind: Deployment
+    metadata:
+      creationTimestamp: null
+      labels:
+        app: nginx
+      name: nginx
+    spec:
+      replicas: 1
+      selector:
+        matchLabels:
+          app: nginx
+      strategy: {}
+      template:
+        metadata:
+          creationTimestamp: null
+          labels:
+            app: nginx
+        spec:
+          containers:
+          - image: nginx
+            name: nginx
+            resources: {}
+            volumeMounts:
+              - name: htdocs
+                mountPath: /usr/share/nginx/html
+          volumes:
+          - name: htdocs
+            configMap:
+               name: htdocs
+    status: {}
+