Add basic info

practice/8.deployment-alternative/1.daemonset/README.md

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+# DaemonSet
+
+1) Переходим в директорию с практикой.
+
+```bash
+cd ~/slurm/practice/4.advanced-abstractions/1.daemonset
+```
+
+2) Создаем демонсет
+
+```bash
+kubectl apply -f daemonset.yaml
+```
+
+В ответ должны увидеть
+
+```bash
+daemonset.apps/node-exporter created
+```
+
+3) Смотрим на поды
+
+```bash
+kubectl get pod -o wide
+```
+
+Видим
+```bash
+NAME                  READY   STATUS    RESTARTS   AGE   IP            NODE
+node-exporter-g5tt8   2/2     Running   0          11s   10.107.32.4   gke-s000-default-pool-41fb7951-ntk8
+node-exporter-jczbm   2/2     Running   0          32s   10.107.32.3   gke-s000-default-pool-41fb7951-4sns
+node-exporter-xpb9f   2/2     Running   0          22s   10.107.32.2   gke-s000-default-pool-41fb7951-lkjn
+```
+
+4) Чистим за собой кластер
+
+```bash
+kubectl delete -f daemonset.yaml
+```

practice/8.deployment-alternative/1.daemonset/daemonset.yaml

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+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  labels:
+    app: node-exporter
+  name: node-exporter
+spec:
+  updateStrategy:
+    rollingUpdate:
+      maxUnavailable: 1
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: node-exporter
+  template:
+    metadata:
+      labels:
+        app: node-exporter
+    spec:
+      containers:
+      - name: node-exporter
+        image: k8s.gcr.io/pause:3.3
+        imagePullPolicy: IfNotPresent
+        resources:
+          limits:
+            cpu: 10m
+            memory: 64Mi
+          requests:
+            cpu: 10m
+            memory: 64Mi
+      nodeSelector:
+        beta.kubernetes.io/os: linux
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 65534
+      tolerations:
+      - effect: NoSchedule
+        key: node-role.kubernetes.io/ingress