Add basic info

2026-06-27 13:50:24 +00:00 · 2021-09-24 11:51:02 +03:00
parent 40b04340dd
commit f44beb51a9
197 changed files with 12740 additions and 0 deletions
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+# Secret
+
+1) Применим деплоймент
+
+Для этого выполним команду:
+
+```bash
+kubectl apply -f ~/slurm/practice/3.saving-configurations/4.downward/
+```
+
+2) Смотрим переменные окружения в контейнере
+
+Для этого выполним команду, подставив вместо < RANDOM > нужное значение(`автоподстановка по TAB`):
+
+```bash
+kubectl exec -it my-deployment-< RANDOM > -- env
+```
+
+3) Смотрим файлы в контейнере /etc/podinfo
+
+Для этого выполним команду, подставив вместо < RANDOM > нужное значение(`автоподстановка по TAB`):
+
+```bash
+kubectl exec -it my-deployment-< RANDOM > -- cat /etc/podinfo/labels
+
+kubectl exec -it my-deployment-< RANDOM > -- cat /etc/podinfo/annotations
+```
+
+PS: Документация
+
+https://kubernetes.io/docs/tasks/inject-data-application/environment-variable-expose-pod-information/
+https://kubernetes.io/docs/tasks/inject-data-application/downward-api-volume-expose-pod-information/
+
+4) Очистка
+
+```
+kubectl delete deployment my-deployment
+kubectl delete configmap my-configmap-env
+kubectl delete configmap my-configmap
+kubectl delete secret test
+```
@@ -0,0 +1,83 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: my-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: my-app
+  strategy:
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 1
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app: my-app
+    spec:
+      containers:
+      - image: nginx:1.12
+        name: nginx
+        env:
+        - name: TEST
+          value: foo
+        - name: TEST_1
+          valueFrom:
+            secretKeyRef:
+              name: test
+              key: test1
+        - name: __NODE_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: spec.nodeName
+        - name: __POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: __POD_NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: __POD_IP
+          valueFrom:
+            fieldRef:
+              fieldPath: status.podIP
+        - name: __NODE_IP
+          valueFrom:
+            fieldRef:
+              fieldPath: status.hostIP
+        - name: __POD_SERVICE_ACCOUNT
+          valueFrom:
+            fieldRef:
+              fieldPath: spec.serviceAccountName
+        ports:
+        - containerPort: 80
+        resources:
+          requests:
+            cpu: 50m
+            memory: 100Mi
+          limits:
+            cpu: 100m
+            memory: 100Mi
+        volumeMounts:
+        - name: config
+          mountPath: /etc/nginx/conf.d/
+        - name: podinfo
+          mountPath: /etc/podinfo
+      volumes:
+      - name: config
+        configMap:
+          name: my-configmap
+      - name: podinfo
+        downwardAPI:
+          items:
+            - path: "labels"
+              fieldRef:
+                fieldPath: metadata.labels
+            - path: "annotations"
+              fieldRef:
+                fieldPath: metadata.annotations
+...