feat(k8s): config maps

Author: rolandszoke

app/configmap-production.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: training-config-production
+  namespace: default
+data:
+  NODE_ENV: production
+  MONGO_URI: mongodb://34.225.152.246:27017/training

app/configmap-staging.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: training-config-staging
+  namespace: default
+data:
+  NODE_ENV: staging
+  MONGO_URI: mongodb://54.212.50.140:27017/training

app/configmap-volumes.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: training-config-volumes
+  namespace: default
+data:
+  training.type: kubernetes
+  training.time: 2 day

app/deployment.yaml

@@ -49,9 +49,14 @@ spec:
             secretKeyRef:
               name: training-secrets
               key: redis
+        envFrom:
+        - configMapRef:
+            name: training-config-production # training-config-staging
         volumeMounts:
         - mountPath: /data
           name: data
+        - mountPath: /etc/config
+          name: config
       - name: logging-agent
         image: busybox
         args: [/bin/sh, -c, 'tail -f /data/training.log']
@@ -66,3 +71,6 @@ spec:
       volumes:
       - name: data
         emptyDir: {}
+      - name: config
+        configMap:
+          name: training-config-volumes

commands.txt

@@ -76,3 +76,14 @@ kubectl get cronjob training-job-cron
 # pod=$(kubectl get pods -a --selector=job-name=training-job-cron-1516207920 --output=jsonpath={.items..metadata.name})
 # kubectl logs $pod
 kubectl delete cronjob hello
+
+### configmap ###
+kubectl create -f ./configmap-production.yaml
+kubectl create -f ./configmap-staging.yaml
+kubectl create -f ./configmap-volumes.yaml
+kubectl create -f ./deployment.yaml
+kubectl get configmaps
+pod=$(kubectl get pods  --show-all --selector=app=training --output=jsonpath={.items..metadata.name})
+kubectl exec -it $pod -c training /bin/sh
+  cat /etc/config/training.type
+  echo $NODE_ENV