# 20210105 期末週

## 課堂資料

{% embed url="<https://www.maxlist.xyz/2020/01/11/docker-flask/>" %}

{% embed url="<https://blog.51cto.com/kaliarch/2160569>" %}

{% file src="<https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGZZoT1EJDbKruh40U%2Fpromethus.zip?alt=media&token=59cea767-a728-4267-ab7f-2e71b581249c>" %}

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQH_L3nLhdGYMbbI9Lo%2F-MQH_SmEgF2Y4ahMzyHD%2FCloud%20Communication%20-%20Deployment.jpg?alt=media\&token=582247e5-89af-487b-a3a3-f709305ca6be)

### Dockerfile + Flask

{% tabs %}
{% tab title="vm1" %}

```
docker login
```

```
cd
```

```
ls
```

```
mkdir mydocker
```

```
cd mydocker
```

> #### 撰寫 dockerfile

```
gedit Dockerfile main.py requirements.txt &
```

{% hint style="info" %}

#### Dockerfile

```
FROM python:3.7.2-stretch

WORKDIR /app

ADD . /app

RUN pip install -r requirements.txt

CMD python main.py
```

* `FROM`：基底映像檔 (base image)
* `WORKDIR`：建立工作目錄
* `ADD`：複製指定的檔案、目錄或遠端檔案 URL，將其加入映像檔檔案系統中的指定位置
* `RUN`：每一個 RUN 指令會在現有映像檔之上加入新的一層，是在建立 (build) 映像檔的過程中會執行的指令
* `CMD`：一個 Dockerfile 中只能有一個 CMD 指令，CMD 則是在容器運行時所執行的指令

#### main.py

```
from flask import Flask

app = Flask(__name__)


@app.route('/')
def hello_world():
    return 'Flask Dockerized'


if __name__ == "__main__":
    app.run(debug=True, host='0.0.0.0', port=8888)
```

#### requirements.txt

```
Click==7.0
Flask==1.1.1
itsdangerous==1.1.0
Jinja2==2.10.3
MarkupSafe==1.1.1
Werkzeug==0.16.0
```

{% endhint %}

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGPTxfMMEwKxETWqu-%2Fimage.png?alt=media\&token=1dfbe5fd-8b5f-497a-81cb-2621dd5a3710)

> #### 將 dockerfile 打包成 image

```
docker build -t mydocker:1.0.0 .
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGPbm6J8WPA8VwhqQg%2Fimage.png?alt=media\&token=e885cc7f-f28c-4b40-b903-1ba27341cf4b)

> #### 透過 image 產生隔離的執行環境 container

```
docker run -d -p 8081:8888 --name mydocker mydocker:1.0.0
```

* `-d`：背景執行
* &#x20;`-p`：將主機 8888 port 與 container 的 80 port 綁定&#x20;
* `–name`：為 container 命名

```
curl 127.0.0.1:8081
```

```
docker images | grep mydocker
```

```
docker tag [鏡像ID] xiaoji850312/mydocker:1.0.0
```

```
docker images | grep mydocker
```

```
docker push xiaoji850312/mydocker:1.0.0
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGQ6MCWnOk6CF7e4nU%2Fimage.png?alt=media\&token=8cfefd99-c69d-4c37-b67a-a2cb941c691c)

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGSS4UNTMoY7pE1CWd%2Fimage.png?alt=media\&token=16c68157-1c32-4f60-82d2-57394036731e)

```
kubectl create deployment mydocker --image=xiaoji850312/mydocker:1.0.0 --dry-run -o yaml > mydocker-deployment.yaml
```

```
gedit mydocker-deployment.yaml &
```

```
kubectl apply -f mydocker-deployment.yaml
```

```
kubectl get deployment
```

```
kubectl get pod
```

```
kubectl get pod -o wide
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGSrYFb0HcfjB8IVmu%2Fimage.png?alt=media\&token=aa7e5b07-93a4-478f-90d0-160a7a42db52)

```
kubectl describe pod [podName]
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGT54bzediU227ISZi%2Fimage.png?alt=media\&token=a53bc01e-e5c4-4488-9440-76462df086dc)

```
kubectl get deployment
```

```
kubectl get pod
```

```
kubectl expose deployment mydocker --port=8888 --target-port=8888 --type=NodePort 
```

```
kubectl get svc
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGTYzWTJA6N7EtSqFo%2Fimage.png?alt=media\&token=1ceb49ad-d5eb-4339-be6d-7f397e954eb1)

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGTOwf1eT-8HmftAUp%2Fimage.png?alt=media\&token=d18aeff8-de2e-4f0b-a817-1fa67afe3ea4)

> #### promethus 安裝

```
cd promethus
```

```
kubectl get svc
```

```
kubectl get svc -n ns-monitor
```

```
gedit prometheus.yaml node-exporter.yaml namespace.yaml
```

{% hint style="info" %}

#### prometheus.yaml

```
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
  name: prometheus
rules:
  - apiGroups: [""] # "" indicates the core API group
    resources:
      - nodes
      - nodes/proxy
      - services
      - endpoints
      - pods
    verbs:
      - get
      - watch
      - list
  - apiGroups:
      - extensions
    resources:
      - ingresses
    verbs:
      - get
      - watch
      - list
  - nonResourceURLs: ["/metrics"]
    verbs:
      - get
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: prometheus
  namespace: ns-monitor
  labels:
    app: prometheus
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: prometheus
subjects:
  - kind: ServiceAccount
    name: prometheus
    namespace: ns-monitor
roleRef:
  kind: ClusterRole
  name: prometheus
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-conf
  namespace: ns-monitor
  labels:
    app: prometheus
data:
  prometheus.yml: |-
    # my global config
    global:
      scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
      evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
      # scrape_timeout is set to the global default (10s).

    # Alertmanager configuration
    alerting:
      alertmanagers:
      - static_configs:
        - targets:
          # - alertmanager:9093

    # Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
    rule_files:
      # - "first_rules.yml"
      # - "second_rules.yml"

    # A scrape configuration containing exactly one endpoint to scrape:
    # Here it's Prometheus itself.
    scrape_configs:
      # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
      - job_name: 'prometheus'

        # metrics_path defaults to '/metrics'
        # scheme defaults to 'http'.

        static_configs:
          - targets: ['localhost:9090']
      - job_name: 'grafana'
        static_configs:
          - targets:
              - 'grafana-service.ns-monitor:3000'

      - job_name: 'kubernetes-apiservers'

        kubernetes_sd_configs:
        - role: endpoints

        # Default to scraping over https. If required, just disable this or change to
        # `http`.
        scheme: https

        # This TLS & bearer token file config is used to connect to the actual scrape
        # endpoints for cluster components. This is separate to discovery auth
        # configuration because discovery & scraping are two separate concerns in
        # Prometheus. The discovery auth config is automatic if Prometheus runs inside
        # the cluster. Otherwise, more config options have to be provided within the
        # <kubernetes_sd_config>.
        tls_config:
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
          # If your node certificates are self-signed or use a different CA to the
          # master CA, then disable certificate verification below. Note that
          # certificate verification is an integral part of a secure infrastructure
          # so this should only be disabled in a controlled environment. You can
          # disable certificate verification by uncommenting the line below.
          #
          # insecure_skip_verify: true
        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token

        # Keep only the default/kubernetes service endpoints for the https port. This
        # will add targets for each API server which Kubernetes adds an endpoint to
        # the default/kubernetes service.
        relabel_configs:
        - source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
          action: keep
          regex: default;kubernetes;https

      # Scrape config for nodes (kubelet).
      #
      # Rather than connecting directly to the node, the scrape is proxied though the
      # Kubernetes apiserver.  This means it will work if Prometheus is running out of
      # cluster, or can't connect to nodes for some other reason (e.g. because of
      # firewalling).
      - job_name: 'kubernetes-nodes'

        # Default to scraping over https. If required, just disable this or change to
        # `http`.
        scheme: https

        # This TLS & bearer token file config is used to connect to the actual scrape
        # endpoints for cluster components. This is separate to discovery auth
        # configuration because discovery & scraping are two separate concerns in
        # Prometheus. The discovery auth config is automatic if Prometheus runs inside
        # the cluster. Otherwise, more config options have to be provided within the
        # <kubernetes_sd_config>.
        tls_config:
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token

        kubernetes_sd_configs:
        - role: node

        relabel_configs:
        - action: labelmap
          regex: __meta_kubernetes_node_label_(.+)
        - target_label: __address__
          replacement: kubernetes.default.svc:443
        - source_labels: [__meta_kubernetes_node_name]
          regex: (.+)
          target_label: __metrics_path__
          replacement: /api/v1/nodes/${1}/proxy/metrics

      # Scrape config for Kubelet cAdvisor.
      #
      # This is required for Kubernetes 1.7.3 and later, where cAdvisor metrics
      # (those whose names begin with 'container_') have been removed from the
      # Kubelet metrics endpoint.  This job scrapes the cAdvisor endpoint to
      # retrieve those metrics.
      #
      # In Kubernetes 1.7.0-1.7.2, these metrics are only exposed on the cAdvisor
      # HTTP endpoint; use "replacement: /api/v1/nodes/${1}:4194/proxy/metrics"
      # in that case (and ensure cAdvisor's HTTP server hasn't been disabled with
      # the --cadvisor-port=0 Kubelet flag).
      #
      # This job is not necessary and should be removed in Kubernetes 1.6 and
      # earlier versions, or it will cause the metrics to be scraped twice.
      - job_name: 'kubernetes-cadvisor'

        # Default to scraping over https. If required, just disable this or change to
        # `http`.
        scheme: https

        # This TLS & bearer token file config is used to connect to the actual scrape
        # endpoints for cluster components. This is separate to discovery auth
        # configuration because discovery & scraping are two separate concerns in
        # Prometheus. The discovery auth config is automatic if Prometheus runs inside
        # the cluster. Otherwise, more config options have to be provided within the
        # <kubernetes_sd_config>.
        tls_config:
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token

        kubernetes_sd_configs:
        - role: node

        relabel_configs:
        - action: labelmap
          regex: __meta_kubernetes_node_label_(.+)
        - target_label: __address__
          replacement: kubernetes.default.svc:443
        - source_labels: [__meta_kubernetes_node_name]
          regex: (.+)
          target_label: __metrics_path__
          replacement: /api/v1/nodes/${1}/proxy/metrics/cadvisor

      # Scrape config for service endpoints.
      #
      # The relabeling allows the actual service scrape endpoint to be configured
      # via the following annotations:
      #
      # * `prometheus.io/scrape`: Only scrape services that have a value of `true`
      # * `prometheus.io/scheme`: If the metrics endpoint is secured then you will need
      # to set this to `https` & most likely set the `tls_config` of the scrape config.
      # * `prometheus.io/path`: If the metrics path is not `/metrics` override this.
      # * `prometheus.io/port`: If the metrics are exposed on a different port to the
      # service then set this appropriately.
      - job_name: 'kubernetes-service-endpoints'

        kubernetes_sd_configs:
        - role: endpoints

        relabel_configs:
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape]
          action: keep
          regex: true
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scheme]
          action: replace
          target_label: __scheme__
          regex: (https?)
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_path]
          action: replace
          target_label: __metrics_path__
          regex: (.+)
        - source_labels: [__address__, __meta_kubernetes_service_annotation_prometheus_io_port]
          action: replace
          target_label: __address__
          regex: ([^:]+)(?::\d+)?;(\d+)
          replacement: $1:$2
        - action: labelmap
          regex: __meta_kubernetes_service_label_(.+)
        - source_labels: [__meta_kubernetes_namespace]
          action: replace
          target_label: kubernetes_namespace
        - source_labels: [__meta_kubernetes_service_name]
          action: replace
          target_label: kubernetes_name

      # Example scrape config for probing services via the Blackbox Exporter.
      #
      # The relabeling allows the actual service scrape endpoint to be configured
      # via the following annotations:
      #
      # * `prometheus.io/probe`: Only probe services that have a value of `true`
      - job_name: 'kubernetes-services'

        metrics_path: /probe
        params:
          module: [http_2xx]

        kubernetes_sd_configs:
        - role: service

        relabel_configs:
        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_probe]
          action: keep
          regex: true
        - source_labels: [__address__]
          target_label: __param_target
        - target_label: __address__
          replacement: blackbox-exporter.example.com:9115
        - source_labels: [__param_target]
          target_label: instance
        - action: labelmap
          regex: __meta_kubernetes_service_label_(.+)
        - source_labels: [__meta_kubernetes_namespace]
          target_label: kubernetes_namespace
        - source_labels: [__meta_kubernetes_service_name]
          target_label: kubernetes_name

      # Example scrape config for probing ingresses via the Blackbox Exporter.
      #
      # The relabeling allows the actual ingress scrape endpoint to be configured
      # via the following annotations:
      #
      # * `prometheus.io/probe`: Only probe services that have a value of `true`
      - job_name: 'kubernetes-ingresses'

        metrics_path: /probe
        params:
          module: [http_2xx]

        kubernetes_sd_configs:
          - role: ingress

        relabel_configs:
          - source_labels: [__meta_kubernetes_ingress_annotation_prometheus_io_probe]
            action: keep
            regex: true
          - source_labels: [__meta_kubernetes_ingress_scheme,__address__,__meta_kubernetes_ingress_path]
            regex: (.+);(.+);(.+)
            replacement: ${1}://${2}${3}
            target_label: __param_target
          - target_label: __address__
            replacement: blackbox-exporter.example.com:9115
          - source_labels: [__param_target]
            target_label: instance
          - action: labelmap
            regex: __meta_kubernetes_ingress_label_(.+)
          - source_labels: [__meta_kubernetes_namespace]
            target_label: kubernetes_namespace
          - source_labels: [__meta_kubernetes_ingress_name]
            target_label: kubernetes_name

      # Example scrape config for pods
      #
      # The relabeling allows the actual pod scrape endpoint to be configured via the
      # following annotations:
      #
      # * `prometheus.io/scrape`: Only scrape pods that have a value of `true`
      # * `prometheus.io/path`: If the metrics path is not `/metrics` override this.
      # * `prometheus.io/port`: Scrape the pod on the indicated port instead of the
      # pod's declared ports (default is a port-free target if none are declared).
      - job_name: 'kubernetes-pods'

        kubernetes_sd_configs:
        - role: pod

        relabel_configs:
        - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
          action: keep
          regex: true
        - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_path]
          action: replace
          target_label: __metrics_path__
          regex: (.+)
        - source_labels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
          action: replace
          regex: ([^:]+)(?::\d+)?;(\d+)
          replacement: $1:$2
          target_label: __address__
        - action: labelmap
          regex: __meta_kubernetes_pod_label_(.+)
        - source_labels: [__meta_kubernetes_namespace]
          action: replace
          target_label: kubernetes_namespace
        - source_labels: [__meta_kubernetes_pod_name]
          action: replace
          target_label: kubernetes_pod_name
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-rules
  namespace: ns-monitor
  labels:
    app: prometheus
data:
  cpu-usage.rule: |
    groups:
      - name: NodeCPUUsage
        rules:
          - alert: NodeCPUUsage
            expr: (100 - (avg by (instance) (irate(node_cpu{name="node-exporter",mode="idle"}[5m])) * 100)) > 75
            for: 2m
            labels:
              severity: "page"
            annotations:
              summary: "{{$labels.instance}}: High CPU usage detected"
              description: "{{$labels.instance}}: CPU usage is above 75% (current value is: {{ $value }})"
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: "prometheus-data-pv"
  labels:
    name: prometheus-data-pv
    release: stable
spec:
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Recycle
  nfs:
    path: /nfs/prometheus/data
    server: 192.168.8.129

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: prometheus-data-pvc
  namespace: ns-monitor
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi
  selector:
    matchLabels:
      name: prometheus-data-pv
      release: stable

---
kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    app: prometheus
  name: prometheus
  namespace: ns-monitor
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: prometheus
  template:
    metadata:
      labels:
        app: prometheus
    spec:
      serviceAccountName: prometheus
      securityContext:
        runAsUser: 0
      containers:
        - name: prometheus
          image: prom/prometheus:latest
          imagePullPolicy: IfNotPresent
          volumeMounts:
            - mountPath: /prometheus
              name: prometheus-data-volume
            - mountPath: /etc/prometheus/prometheus.yml
              name: prometheus-conf-volume
              subPath: prometheus.yml
            - mountPath: /etc/prometheus/rules
              name: prometheus-rules-volume
          ports:
            - containerPort: 9090
              protocol: TCP
      volumes:
        - name: prometheus-data-volume
          persistentVolumeClaim:
            claimName: prometheus-data-pvc
        - name: prometheus-conf-volume
          configMap:
            name: prometheus-conf
        - name: prometheus-rules-volume
          configMap:
            name: prometheus-rules
      tolerations:
        - key: node-role.kubernetes.io/master
          effect: NoSchedule

---
kind: Service
apiVersion: v1
metadata:
  annotations:
    prometheus.io/scrape: 'true'
  labels:
    app: prometheus
  name: prometheus-service
  namespace: ns-monitor
spec:
  ports:
    - port: 9090
      targetPort: 9090
  selector:
    app: prometheus
  type: NodePort
```

{% endhint %}

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQG_Ev-1wDTVW3Dx2Yp%2Fimage.png?alt=media\&token=4544a407-5f11-4b51-a17e-d02fd8468698)

```
mkdir /nfs/prometheus/data/ -p
```

```
vim /etc/exports
```

{% hint style="info" %}

#### /etc/exports

```
/data/ 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
/var/nfsshare/ 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
/nfs/prometheus/data 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
```

{% endhint %}

```
systemctl restart nfs
```

```
showmount -e localhost
```

```
ls
```

```
kubectl apply -f namespace.yaml
```

```
kubectl apply -f prometheus.yaml
```

```
kubectl apply -f node-exporter.yaml
```

```
kubectl get svc -n ns-monitor
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGbE1AZKyn3t4jIK6b%2Fimage.png?alt=media\&token=3b42eace-b248-493e-8db9-6ce1d3fa4d23)

```
vim /etc/exports
```

{% hint style="info" %}

#### /etc/exports

```
/data/ 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
/var/nfsshare/ 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
/nfs/prometheus/ 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
```

{% endhint %}

```
systemctl restart nfs
```

```
showmount -e localhost
```

```
kubectl apply -f prometheus.yaml
```

```
kubectl get svc -n ns-monitor
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGkuXSuW4tPJyNA1DP%2Fimage.png?alt=media\&token=58d9a3fa-ec28-40c6-a0c9-f8226a0c5cf3)

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGkWB9NIs68M35HA1w%2Fimage.png?alt=media\&token=f8572ce1-4744-4151-b576-51f615fa6dc4)

```
cd /nfs/prometheus/
```

```
ls
```

```
cd data/
```

```
ls
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGl3dMHQOCrSHJadJt%2Fimage.png?alt=media\&token=bf9f3a86-82dc-482b-adb3-bca047c78154)

```
cat /proc/cpuinfo 
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGlS73U--c_NQYm3kG%2Fimage.png?alt=media\&token=1ed1e961-6ab8-42fe-bdd1-2e814163c163)

```
cd promethus
```

```
top
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGmNQWdRXoMCYexnKL%2Fimage.png?alt=media\&token=628c6b71-03f0-4ff3-9711-5af41f8635ae)

```
kubectl get svc -n ns-monitor
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGmx7XYlmiRDmTrZtp%2Fimage.png?alt=media\&token=360c51fa-3480-488e-a35d-d87eac6f2284)

```
ls
```

```
gedit grafana.yaml
```

{% hint style="info" %}

#### grafana.yaml

```
apiVersion: v1
kind: PersistentVolume
metadata:
  name: "grafana-data-pv"
  labels:
    name: grafana-data-pv
    release: stable
spec:
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Recycle
  nfs:
    path: /nfs/grafana/data
    server: 192.168.8.129
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: grafana-data-pvc
  namespace: ns-monitor
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi
  selector:
    matchLabels:
      name: grafana-data-pv
      release: stable
---
kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    app: grafana
  name: grafana
  namespace: ns-monitor
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: grafana
  template:
    metadata:
      labels:
        app: grafana
    spec:
      securityContext:
        runAsUser: 0
      containers:
        - name: grafana
          image: grafana/grafana
          imagePullPolicy: IfNotPresent
          env:
          # The following env variables set up basic auth twith the default admin user and admin password.
          - name: GF_AUTH_BASIC_ENABLED
            value: "true"
          - name: GF_AUTH_ANONYMOUS_ENABLED
            value: "false"
          # - name: GF_AUTH_ANONYMOUS_ORG_ROLE
          #   value: Admin
          # does not really work, because of template variables in exported dashboards:
          # - name: GF_DASHBOARDS_JSON_ENABLED
          #   value: "true"	
          readinessProbe:
            httpGet:
              path: /login
              port: 3000
          volumeMounts:
            - mountPath: /var/lib/grafana
              name: grafana-data-volume
          ports:
            - containerPort: 3000
              protocol: TCP
      volumes:
        - name: grafana-data-volume
          persistentVolumeClaim:
            claimName: grafana-data-pvc
---
kind: Service
apiVersion: v1
metadata:
  labels:
    app: grafana
  name: grafana-service
  namespace: ns-monitor
spec:
  ports:
    - port: 3000
      targetPort: 3000
  selector:
    app: grafana
  type: NodePort
```

{% endhint %}

```
kubectl get svc -n ns-monitor
```

```
mkdir /nfs/grafana/data -p
```

```
vim /etc/exports
```

{% hint style="info" %}

#### /etc/exports

```
/data/ 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
/var/nfsshare/ 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
/nfs/prometheus/ 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
/nfs/grafana/data 192.168.8.0/24(rw,sync,no_root_squash,no_all_squash)
```

{% endhint %}

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGpFk_u2hEta83vww7%2Fimage.png?alt=media\&token=a4dc432e-4c3e-4988-87ba-d7cc95cbc307)

```
systemctl restart rpcbind
```

```
systemctl restart nfs
```

```
kubectl apply -f grafana.yaml
```

```
kubectl get pod -n ns-monitor
```

```
kubectl get svc -n ns-monitor
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGpWOslNkZtQ_tZjP7%2Fimage.png?alt=media\&token=6b689cf6-1ec9-427c-b0a8-12052ca9d814)

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGpf2ClC4s5yF7IZMg%2Fimage.png?alt=media\&token=8054cf0c-8007-4412-8337-5039438071cf)

{% hint style="info" %}
change password `admin` to `root1234`
{% endhint %}

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGq1lmUSp-mJtvWmv-%2Fimage.png?alt=media\&token=0243faf0-8edb-4fd9-9eab-a487477a5ffb)

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGqU5HJ3HVFf2YT049%2Fimage.png?alt=media\&token=48b4f178-6e3e-4b64-9309-ebd138cd7d36)

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGqrBe_QuMl6y34dCH%2Fimage.png?alt=media\&token=eeeaedc4-2676-4095-95e3-2d0f2cf0fee7)

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGr2ldlqLD9c6wsEzt%2Fimage.png?alt=media\&token=01741e3a-796d-448f-9f05-a97a5f97610f)

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGrFXmu3lXdzAZaNwQ%2Fimage.png?alt=media\&token=dbf6e8c4-b585-4e46-bc55-50bf125226b8)
{% endtab %}

{% tab title="vm2" %}

```
docker login
```

```
docker images | grep xiaoji850312
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGUtA5UbLYynbM43Xk%2Fimage.png?alt=media\&token=9e1907d8-e456-4c22-809b-a5aacd6047fe)
{% endtab %}

{% tab title="vm3" %}

```
docker login
```

```
docker images | grep xiaoji850312
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQGUf1px_9-lzx6cNXl%2Fimage.png?alt=media\&token=f75ec692-443f-4b8f-afcc-6f53d81ded3e)
{% endtab %}
{% endtabs %}

## 課堂練習

### 鳶尾花

{% tabs %}
{% tab title="vm1" %}

```
cd harbor
```

### 執行安裝程序

```
sh install.sh
```

```
docker tag 514 xiaoji850312/iris:1.0
```

```
docker push xiaoji850312/iris:1.0
```

```
docker pull xiaoji850312/iris:1.0
```

```
cd
```

```
ls
```

```
cd iris
```

> #### 撰寫 dockerfile

```
gedit Dockerfile main.py requirements.txt &
```

{% hint style="info" %}

#### Dockerfile

```
FROM python:3.7.2-stretch

WORKDIR /app

ADD . /app

RUN pip install -r requirements.txt

CMD python main.py
```

#### main.py

```
from flask import Flask

app = Flask(__name__)


@app.route('/')
def hello_world():
    return 'Flask Dockerized'


if __name__ == "__main__":
    app.run(debug=True, host='0.0.0.0', port=8888)
```

#### requirements.txt

```
Click==7.0
Flask==1.1.1
itsdangerous==1.1.0
Jinja2==2.10.3
MarkupSafe==1.1.1
Werkzeug==0.16.0
```

{% endhint %}

```
pip install --upgrade pip
```

```
docker images | grep iris
```

```
kubectl create deployment iris --image=xiaoji850312/iris:1.0 --dry-run -o yaml > iris-deployment.yaml
```

```
gedit iris-deployment.yaml &
```

```
kubectl apply -f iris-deployment.yaml
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQHuJOsA84GJzMZ5HOO%2F-MQIHMeYS5aKZ2UHPIKG%2Fimage.png?alt=media\&token=5b7d9bdc-a35f-4f41-98ef-a7414bacfddc)

```
kubectl get deployment
```

```
kubectl get pod
```

```
kubectl get pod -o wide
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQHuJOsA84GJzMZ5HOO%2F-MQI8hD9LKNcKaZ7F6by%2Fimage.png?alt=media\&token=c02dacc8-83d7-4baa-8d6b-6eee67981ca9)

```
kubectl expose deployment iris --port=8888 --target-port=8888 --type=NodePort 
```

```
kubectl get svc
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQHuJOsA84GJzMZ5HOO%2F-MQI9fNCo8SIrMvZbZdo%2Fimage.png?alt=media\&token=e006899f-bd5b-4bc3-a14b-d1522bfcf30f)
{% endtab %}

{% tab title="vm2" %}

```
docker login 192.168.8.129
```

```
docker pull xiaoji850312/iris:1.0
```

```
docker tag 514 192.168.8.129/xiaoji850312/iris:1.0
```

```
docker push 192.168.8.129/xiaoji850312/iris:1.0
```

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQH6RNXBCAtE-nQ7kOO%2F-MQH6YCjGXKeAL8Q4Bfo%2Fimage.png?alt=media\&token=db4797a1-eaec-426b-9c83-09932ec86de0)
{% endtab %}

{% tab title="Harbor" %}
{% hint style="info" %}

#### 新增倉庫

{% endhint %}

![](https://483685739-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MHFSfnhkNCUTnJ2hcGc%2F-MQG20ZvbhPHjm5aQuiD%2F-MQH66RCug-iHCuq67vw%2Fimage.png?alt=media\&token=5f3de802-dacf-4359-93ba-59d89a15d355)
{% endtab %}
{% endtabs %}
