Lab 12: k8s config maps

app_python/.dockerignore

@@ -1 +1,3 @@
 **/__pycache__
+app_files/logs/**
+app_files/db.sqlite3

app_python/.gitignore

@@ -1 +1,3 @@
 **/__pycache__
+app_files/logs/**
+app_files/db.sqlite3

app_python/app_files/urls.py

@@ -19,4 +19,5 @@
 
 urlpatterns = [
     path('', views.datetime_view),
+    path('visits', views.visits),
 ]

app_python/app_files/views.py

@@ -1,11 +1,25 @@
 from django.http import HttpResponse
 from datetime import datetime
 import pytz
+import os
 
 
 DATETIME_TIMEZONE = pytz.timezone('Europe/Moscow')
 DATETIME_FORMAT = "%d/%m/%Y %H:%M:%S"
 
 def datetime_view(request):
 	current_moscow_datetime = datetime.now(DATETIME_TIMEZONE)
-	return HttpResponse(current_moscow_datetime.strftime(DATETIME_FORMAT))
+	time_string = current_moscow_datetime.strftime(DATETIME_FORMAT)
+	if not os.path.exists('logs'):
+		os.mkdir('logs')
+	f = open("logs/access.txt", "a")
+	f.write(time_string)
+	f.write("\n")
+	f.close()
+	return HttpResponse(time_string)
+
+def visits(request):
+	f = open("logs/access.txt", 'r')
+	file_content = f.read().replace("\n", "<br>")
+	f.close()
+	return HttpResponse(file_content)

k8s/12.md

@@ -0,0 +1,13 @@
+# Lab 12 config output 
+
+```
+kezzyhko@kezzyhko-laptop:~/windesktop/DevOps/k8s$ kubectl get po
+NAME                                   READY   STATUS    RESTARTS      AGE
+time-app-chart-588c77b667-hf886        1/1     Running   1 (40h ago)   8d
+time-app-deployment-5bcc57b5c7-6lvcd   1/1     Running   0             4m31s
+time-app-deployment-5bcc57b5c7-dr49l   1/1     Running   0             4m31s
+kezzyhko@kezzyhko-laptop:~/windesktop/DevOps/k8s$ kubectl exec time-app-deployment-5bcc57b5c7-6lvcd -- cat /app/config.json
+{
+        "config_key": "config_value"
+}kezzyhko@kezzyhko-laptop:~/windesktop/DevOps/k8s$
+```

k8s/time-app/files/config.json

@@ -0,0 +1,3 @@
+{
+	"config_key": "config_value"
+}

k8s/time-app/templates/config.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadadata:
+  name: example-config
+data:
+  config.json: |-
+    {{ .Files.Get "files/config.json" }}

k8s/time-app/templates/deployment.yaml

@@ -27,6 +27,10 @@ spec:
       serviceAccountName: {{ include "time-app.serviceAccountName" . }}
       securityContext:
         {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      volumes:
+        - name: config-volume
+          configMap:
+            name: example-config
       containers:
         - name: {{ .Chart.Name }}
           securityContext:
@@ -37,6 +41,10 @@ spec:
             - name: http
               containerPort: 5000
               protocol: TCP
+          volumeMouns:
+            - name: config-volume
+              mountPath: /app/config.yaml
+              subPath: files/config.yaml
           env:
             - name: super-secret
               valueFrom:

monitoring/docker-compose.yml

@@ -97,12 +97,8 @@ services:
       - 5000
     ports:
       - "5000:5000"
-    logging:
-      driver: "json-file"
-      options:
-        max-size: "100m"
-        max-file: "10"
-        tag: "{{.ImageName}}|{{.Name}}"
+    volumes:
+      - app-logs:/app/logs
     networks:
       - monitoring.network
     logging:
@@ -207,3 +203,4 @@ volumes:
   loki-data: {}
   promtail-data: {}
   prometheus-data: {}
+  app-logs: {}