Ở phần trước mình đã deploy nginx, cùng các service như tea hay coffee, đến phần này mình sẽ deploy 1 ứng dụng web có hệ thống được miêu tả như hình trên, phần sensor thì mình sẽ không làm chi tiết, các bạn có thể tham khảo tại đây hoặc qua github. Chúng ta có các services như Flask, mysql, nuxt.js được định tuyến chung với nginx-ingress sau đó sử dụng luôn worker node làm domain, loadbalancer. Dự án đo nồng độ ô nhiễm bụi trong không khí này cũng được xây dựng microservices các bạn có thể tham khảo tại đây https://github.com/sun-asterisk-research/air-viewer
CleanUp phần trước
1 2 3 4 5 6 7 8 9 | # xóa service kubectl delete service coffee-svc tea-svc # xóa các deployment kubectl delete deployment coffee tea # xóa các ingress của các services kubectl delete ingress cafe-ingress # xóa các secret của ingress kubectl delete secret cafe-secret |
Clone Project Air-viewer
1 2 | <span class="token function">git</span> clone https://github.com/sun-asterisk-research/air-viewer.git |
Install đối với các bạn chưa đọc bài trước
Ở phần trước mình đã cài đặt kubernetes-ingress nên mình sẽ đi nhanh phần này nếu các bạn chưa cài đặt kubernetes-ingress. Từ giờ trở đi mặc định các câu lệnh thực thi trên master node thôi
1 2 3 | # vào thư mục install cd air-viewer/kubernetes/nginx-ingress/install |
Create a Namespace, a SA, the Default Secret, the Customization Config Map, and Custom Resource Definitions
1 2 | kubectl apply -f ns-and-sa.yaml |
Tạo một secret với chứng chỉ TLS và key cho server mặc định NGINX:
1 2 | kubectl apply -f default-server-secret.yaml |
Tạo một config map cho tùy biến NGINX configuration
1 2 | kubectl apply -f nginx-config.yaml |
Tạo custom resource definitions cho VirtualServer và VirtualServerRoute
1 2 | kubectl apply -f custom-resource-definitions.yaml |
Configure RBAC
1 2 | kubectl apply -f rbac.yaml |
Deploy the Ingress Controller
1 2 | kubectl apply -f nginx-ingress.yaml |
Config Air-viewer
Create Namespaces
1 2 | kubectl create namespace air-viewer |
Deploy Mysql
Về deploy mysql chúng ta cần persistent Volume nơi chưa database, secret chứa các password của root và user name để che dấu password tránh người khác cùng quản lý các services khác đọc được thông qua câu lệnh describe deployment của mysql. Cuối cùng là các file chứa service và deployment
1 2 | cd air-viewer/kubernetes/mysql |
Secret
1 2 | echo -n "root" | base64 |
ouput: cm9vdA==
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Secret <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>secrets <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">type</span><span class="token punctuation">:</span> Opaque <span class="token key atrule">data</span><span class="token punctuation">:</span> <span class="token key atrule">ROOT_PASSWORD</span><span class="token punctuation">:</span> cm9vdA== <span class="token punctuation">---</span> <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Secret <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>pass<span class="token punctuation">-</span>non<span class="token punctuation">-</span>root <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">type</span><span class="token punctuation">:</span> Opaque <span class="token key atrule">data</span><span class="token punctuation">:</span> <span class="token key atrule">ROOT_PASSWORD</span><span class="token punctuation">:</span> ZXhhbXBsZQ== |
1 2 | kubectl apply -f secret.yaml |
Chúng ta có thể liệt kê các secret trong namespace air-viewer
1 2 | kubectl get secret -n air-viewer |
Output:
1 2 3 4 5 | NAME TYPE DATA AGE default-token-p6j5h kubernetes.io/service-account-token 3 105m mysql-pass-non-root Opaque 1 3m54s mysql-secrets Opaque 1 3m54s |
mô tả hiển thị thông tin của secret mysql-secrets, tương tự mysql-pass-non-root
1 2 | kubectl describe secret mysql-secrets -n air-viewer |
Output:
1 2 3 4 5 6 7 8 9 10 | Name: mysql-secrets Namespace: air-viewer Labels: <none> Annotations: Type: Opaque Data ==== ROOT_PASSWORD: 4 bytes |
Persistent Storage
Container là một cấu trúc ephemeral. Mọi thay đổi đối với container đang chạy sẽ bị mất dữ liệu khi container stop. Vì đó, container sẽ không phù hợp cho cơ sở dữ liệu lưu trữ, chúng ta bắt buộc phải sử dụng volume store để mount với các pod của mysql
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | <span class="token comment"># tạo kho 2Gi trống</span> <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> PersistentVolume <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>pv<span class="token punctuation">-</span>volume <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">type</span><span class="token punctuation">:</span> local <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">storageClassName</span><span class="token punctuation">:</span> manual <span class="token key atrule">capacity</span><span class="token punctuation">:</span> <span class="token key atrule">storage</span><span class="token punctuation">:</span> 2Gi <span class="token key atrule">accessModes</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> ReadWriteOnce <span class="token key atrule">hostPath</span><span class="token punctuation">:</span> <span class="token key atrule">path</span><span class="token punctuation">:</span> <span class="token string">"/mnt/data"</span> <span class="token punctuation">---</span> <span class="token comment"># mysql sẽ sử dụng mysql-pv-claim thông qua deployment</span> <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> PersistentVolumeClaim <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>pv<span class="token punctuation">-</span>claim <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">storageClassName</span><span class="token punctuation">:</span> manual <span class="token key atrule">accessModes</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> ReadWriteOnce <span class="token key atrule">resources</span><span class="token punctuation">:</span> <span class="token key atrule">requests</span><span class="token punctuation">:</span> <span class="token key atrule">storage</span><span class="token punctuation">:</span> 2Gi |
1 2 | kubectl apply -f persistentVolume.yaml |
Deployment
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> apps/v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Deployment <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> mysql <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">replicas</span><span class="token punctuation">:</span> <span class="token number">1</span> <span class="token key atrule">selector</span><span class="token punctuation">:</span> <span class="token key atrule">matchLabels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> mysql <span class="token key atrule">strategy</span><span class="token punctuation">:</span> <span class="token key atrule">type</span><span class="token punctuation">:</span> Recreate <span class="token key atrule">template</span><span class="token punctuation">:</span> <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> mysql <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">containers</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">image</span><span class="token punctuation">:</span> mysql<span class="token punctuation">:</span><span class="token number">5.7</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql <span class="token key atrule">env</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> MYSQL_ROOT_PASSWORD <span class="token key atrule">valueFrom</span><span class="token punctuation">:</span> <span class="token key atrule">secretKeyRef</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>secrets <span class="token key atrule">key</span><span class="token punctuation">:</span> ROOT_PASSWORD <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> TZ <span class="token key atrule">value</span><span class="token punctuation">:</span> Asia/Ho_Chi_Minh <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> MYSQL_DATABASE <span class="token key atrule">value</span><span class="token punctuation">:</span> air_viewer <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> MYSQL_USER <span class="token key atrule">value</span><span class="token punctuation">:</span> example <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> MYSQL_PASSWORD <span class="token key atrule">valueFrom</span><span class="token punctuation">:</span> <span class="token key atrule">secretKeyRef</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>pass<span class="token punctuation">-</span>non<span class="token punctuation">-</span>root <span class="token key atrule">key</span><span class="token punctuation">:</span> ROOT_PASSWORD <span class="token key atrule">ports</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">containerPort</span><span class="token punctuation">:</span> <span class="token number">3306</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql <span class="token key atrule">volumeMounts</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>persistent<span class="token punctuation">-</span>storage <span class="token key atrule">mountPath</span><span class="token punctuation">:</span> /var/lib/mysql <span class="token key atrule">volumes</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>persistent<span class="token punctuation">-</span>storage <span class="token key atrule">persistentVolumeClaim</span><span class="token punctuation">:</span> <span class="token key atrule">claimName</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>pv<span class="token punctuation">-</span>claim |
Như trên có thể thấy việc mapping giữa deployment với secret và mysql-pv-claim
1 2 | kubectl apply -f deployment.yaml |
Kiểm tra trạng thái của deployment mysql
1 2 | kubectl describe deployment mysql -n air-viewer |
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | Name: mysql Namespace: air-viewer CreationTimestamp: Mon, 17 Feb 2020 06:19:55 +0000 Labels: app=mysql Annotations: deployment.kubernetes.io/revision: 1 kubectl.kubernetes.io/last-applied-configuration: {"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{},"labels":{"app":"mysql"},"name":"mysql","namespace":"air-viewer"}... Selector: app=mysql Replicas: 1 desired | 1 updated | 1 total | 1 available | 0 unavailable StrategyType: Recreate MinReadySeconds: 0 Pod Template: Labels: app=mysql Containers: mysql: Image: mysql:5.7 Port: 3306/TCP Host Port: 0/TCP Environment: MYSQL_ROOT_PASSWORD: <set to the key 'ROOT_PASSWORD' in secret 'mysql-secrets'> Optional: false TZ: Asia/Ho_Chi_Minh MYSQL_DATABASE: air_viewer MYSQL_USER: example MYSQL_PASSWORD: <set to the key 'ROOT_PASSWORD' in secret 'mysql-pass-non-root'> Optional: false Mounts: /var/lib/mysql from mysql-persistent-storage (rw) Volumes: mysql-persistent-storage: Type: PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace) ClaimName: mysql-pv-claim ReadOnly: false Conditions: Type Status Reason ---- ------ ------ Available True MinimumReplicasAvailable Progressing True NewReplicaSetAvailable OldReplicaSets: <none> NewReplicaSet: mysql-6454669767 (1/1 replicas created) Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal ScalingReplicaSet 99s deployment-controller Scaled up replica set mysql-6454669767 to 1 |
Truy cập môi trường bên trong của pods được tạo
1 2 | kubectl get pods -n air-viewer |
output:
1 2 3 | NAME READY STATUS RESTARTS AGE mysql-6454669767-7md6f 1/1 Running 0 6m18s |
1 2 | kubectl exec -it mysql-6454669767-7md6f bash -n air-viewer |
output:
1 2 3 | <a class="__cf_email__" href="/cdn-cgi/l/email-protection">[email protected]</a>:/# mysql -u root -p password: root (đã được mã hóa ở trên) là truy cập được mysql |
Service
Dựng service cho các pod(s)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Service <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> mysql <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">type</span><span class="token punctuation">:</span> ClusterIP <span class="token key atrule">ports</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">port</span><span class="token punctuation">:</span> <span class="token number">3306</span> <span class="token key atrule">selector</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> mysql |
1 2 | kubectl apply -f service.yaml |
Kiểm tra lại:
1 2 | kubectl describe svc mysql -n air-viewer |
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | Name: mysql Namespace: air-viewer Labels: app=mysql Annotations: kubectl.kubernetes.io/last-applied-configuration: {"apiVersion":"v1","kind":"Service","metadata":{"annotations":{},"labels":{"app":"mysql"},"name":"mysql","namespace":"air-viewer"},"spec":... Selector: app=mysql Type: ClusterIP IP: 10.108.61.223 Port: <unset> 3306/TCP TargetPort: 3306/TCP Endpoints: 10.244.1.3:3306 Session Affinity: None Events: <none> |
Deploy Backend (Flask, UWSGI)
Deployment
1 2 | cd air-viewer/kubernetes/backend |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> apps/v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Deployment <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">replicas</span><span class="token punctuation">:</span> <span class="token number">2</span> <span class="token key atrule">selector</span><span class="token punctuation">:</span> <span class="token key atrule">matchLabels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">strategy</span><span class="token punctuation">:</span> <span class="token key atrule">type</span><span class="token punctuation">:</span> Recreate <span class="token key atrule">template</span><span class="token punctuation">:</span> <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">containers</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">image</span><span class="token punctuation">:</span> quanghung97/backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer<span class="token punctuation">:</span>v1 <span class="token key atrule">imagePullPolicy</span><span class="token punctuation">:</span> Always <span class="token key atrule">name</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">env</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> DB_HOST <span class="token key atrule">value</span><span class="token punctuation">:</span> mysql<span class="token punctuation">:</span><span class="token number">3306</span> <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> DB_DATABASE <span class="token key atrule">value</span><span class="token punctuation">:</span> air_viewer <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> DB_USERNAME <span class="token key atrule">value</span><span class="token punctuation">:</span> example <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> DB_PASSWORD <span class="token key atrule">valueFrom</span><span class="token punctuation">:</span> <span class="token key atrule">secretKeyRef</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> mysql<span class="token punctuation">-</span>pass<span class="token punctuation">-</span>non<span class="token punctuation">-</span>root <span class="token key atrule">key</span><span class="token punctuation">:</span> ROOT_PASSWORD <span class="token key atrule">ports</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">containerPort</span><span class="token punctuation">:</span> <span class="token number">80</span> <span class="token key atrule">protocol</span><span class="token punctuation">:</span> TCP |
Deploy này sẽ kết hợp với secret user, password đã tạo trước đó.
1 2 | kubectl apply -f deployment.yaml |
Kiểm tra:
1 2 | kubectl describe deployment backend-air-viewer -n air-viewer |
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | Name: backend-air-viewer Namespace: air-viewer CreationTimestamp: Mon, 17 Feb 2020 06:53:19 +0000 Labels: app=backend-air-viewer Annotations: deployment.kubernetes.io/revision: 1 kubectl.kubernetes.io/last-applied-configuration: {"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{},"labels":{"app":"backend-air-viewer"},"name":"backend-air-viewer"... Selector: app=backend-air-viewer Replicas: 2 desired | 2 updated | 2 total | 2 available | 0 unavailable StrategyType: Recreate MinReadySeconds: 0 Pod Template: Labels: app=backend-air-viewer Containers: backend-air-viewer: Image: quanghung97/backend-air-viewer:v1 Port: 80/TCP Host Port: 0/TCP Environment: DB_HOST: mysql:3306 DB_DATABASE: air_viewer DB_USERNAME: example DB_PASSWORD: <set to the key 'ROOT_PASSWORD' in secret 'mysql-pass-non-root'> Optional: false Mounts: <none> Volumes: <none> Conditions: Type Status Reason ---- ------ ------ Available True MinimumReplicasAvailable Progressing True NewReplicaSetAvailable OldReplicaSets: <none> NewReplicaSet: backend-air-viewer-69dd45dfbd (2/2 replicas created) Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal ScalingReplicaSet 2m3s deployment-controller Scaled up replica set backend-air-viewer-69dd45dfbd to 2 |
Service
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Service <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">selector</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">ports</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">protocol</span><span class="token punctuation">:</span> TCP <span class="token key atrule">port</span><span class="token punctuation">:</span> <span class="token number">80</span> <span class="token key atrule">targetPort</span><span class="token punctuation">:</span> <span class="token number">80</span> |
1 2 | kubectl apply -f service.yaml |
Deploy Frontend (Nuxt.js)
1 2 | cd air-viewer/kubernetes/frontend |
Deployment
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> apps/v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Deployment <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">replicas</span><span class="token punctuation">:</span> <span class="token number">3</span> <span class="token key atrule">selector</span><span class="token punctuation">:</span> <span class="token key atrule">matchLabels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">strategy</span><span class="token punctuation">:</span> <span class="token key atrule">type</span><span class="token punctuation">:</span> Recreate <span class="token key atrule">template</span><span class="token punctuation">:</span> <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">containers</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">image</span><span class="token punctuation">:</span> quanghung97/frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer<span class="token punctuation">:</span>framgia2c <span class="token key atrule">imagePullPolicy</span><span class="token punctuation">:</span> Always <span class="token key atrule">name</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">ports</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">containerPort</span><span class="token punctuation">:</span> <span class="token number">3000</span> <span class="token key atrule">protocol</span><span class="token punctuation">:</span> TCP <span class="token key atrule">env</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> TZ <span class="token key atrule">value</span><span class="token punctuation">:</span> Asia/Ho_Chi_Minh |
1 2 | kubectl apply -f deployment.yaml |
Service
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Service <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">labels</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token key atrule">selector</span><span class="token punctuation">:</span> <span class="token key atrule">app</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">type</span><span class="token punctuation">:</span> ClusterIP <span class="token key atrule">ports</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">protocol</span><span class="token punctuation">:</span> TCP <span class="token key atrule">port</span><span class="token punctuation">:</span> <span class="token number">80</span> <span class="token key atrule">targetPort</span><span class="token punctuation">:</span> <span class="token number">3000</span> |
1 2 | kubectl apply -f service.yaml |
Kiểm tra:
1 2 | kubectl describe deployment frontend-air-viewer -n air-viewer |
Output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | Name: frontend-air-viewer Namespace: air-viewer CreationTimestamp: Mon, 17 Feb 2020 06:59:19 +0000 Labels: app=frontend-air-viewer Annotations: deployment.kubernetes.io/revision: 1 kubectl.kubernetes.io/last-applied-configuration: {"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{},"labels":{"app":"frontend-air-viewer"},"name":"frontend-air-viewe... Selector: app=frontend-air-viewer Replicas: 3 desired | 3 updated | 3 total | 3 available | 0 unavailable StrategyType: Recreate MinReadySeconds: 0 Pod Template: Labels: app=frontend-air-viewer Containers: frontend-air-viewer: Image: quanghung97/frontend-air-viewer:framgia2c Port: 3000/TCP Host Port: 0/TCP Environment: TZ: Asia/Ho_Chi_Minh Mounts: <none> Volumes: <none> Conditions: Type Status Reason ---- ------ ------ Available True MinimumReplicasAvailable Progressing True NewReplicaSetAvailable OldReplicaSets: <none> NewReplicaSet: frontend-air-viewer-67d5dd75c7 (3/3 replicas created) Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal ScalingReplicaSet 88s deployment-controller Scaled up replica set frontend-air-viewer-67d5dd75c7 to 3 |
Ingress controller config
Sơ sơ về VirtualServer: VirtualServer để định cấu hình cân bằng tải cho một tên miền
Ở phần này mình có chút yêu cầu về Virtual server route và virtual server tìm hiểu thêm ở đây
1 2 | cd air-viewer/kubernetes/nginx-ingress |
Secret DNS framgia2c.mylabserver.com
1 2 3 4 5 6 7 8 9 10 11 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> Secret <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer<span class="token punctuation">-</span>secret <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">type</span><span class="token punctuation">:</span> Opaque <span class="token key atrule">data</span><span class="token punctuation">:</span> <span class="token comment"># change this to your crt and key with your DNS</span> <span class="token key atrule">tls.crt</span><span class="token punctuation">:</span> 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 <span class="token key atrule">tls.key</span><span class="token punctuation">:</span> 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 |
1 2 | kubectl apply -f air-viewer-secret.yaml |
Backend Virtual Server Route
Cấu hình route của backend với prefix /api
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> k8s.nginx.org/v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> VirtualServerRoute <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token comment"># change this to your DNS</span> <span class="token key atrule">host</span><span class="token punctuation">:</span> framgia2c.mylabserver.com <span class="token key atrule">upstreams</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">service</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">port</span><span class="token punctuation">:</span> <span class="token number">80</span> <span class="token key atrule">subroutes</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">path</span><span class="token punctuation">:</span> /api <span class="token key atrule">action</span><span class="token punctuation">:</span> <span class="token key atrule">pass</span><span class="token punctuation">:</span> backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer |
1 2 | kubectl apply -f backend-virtual-server-route.yaml |
Frontend Virtual Server Route
Cấu hình route của frontend với prefix /
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> k8s.nginx.org/v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> VirtualServerRoute <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token comment"># change this to your DNS</span> <span class="token key atrule">host</span><span class="token punctuation">:</span> framgia2c.mylabserver.com <span class="token key atrule">upstreams</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">service</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token key atrule">port</span><span class="token punctuation">:</span> <span class="token number">80</span> <span class="token key atrule">subroutes</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">path</span><span class="token punctuation">:</span> / <span class="token key atrule">action</span><span class="token punctuation">:</span> <span class="token key atrule">pass</span><span class="token punctuation">:</span> frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer |
1 2 | kubectl apply -f frontend-virtual-server-route.yaml |
Air-viewer Virtual Server
Map các quy tắc đường dẫn cho nginx controller
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | <span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> k8s.nginx.org/v1 <span class="token key atrule">kind</span><span class="token punctuation">:</span> VirtualServer <span class="token key atrule">metadata</span><span class="token punctuation">:</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">namespace</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer <span class="token key atrule">spec</span><span class="token punctuation">:</span> <span class="token comment"># change this to your DNS</span> <span class="token key atrule">host</span><span class="token punctuation">:</span> framgia2c.mylabserver.com <span class="token key atrule">tls</span><span class="token punctuation">:</span> <span class="token key atrule">secret</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer<span class="token punctuation">-</span>secret <span class="token key atrule">routes</span><span class="token punctuation">:</span> <span class="token punctuation">-</span> <span class="token key atrule">path</span><span class="token punctuation">:</span> /api <span class="token key atrule">route</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer/backend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer <span class="token punctuation">-</span> <span class="token key atrule">path</span><span class="token punctuation">:</span> / <span class="token key atrule">route</span><span class="token punctuation">:</span> air<span class="token punctuation">-</span>viewer/frontend<span class="token punctuation">-</span>air<span class="token punctuation">-</span>viewer |
Kiểm tra frontend-air-viewer cũng tương tự đối với backend-air-viewer
1 2 | kubectl describe virtualserverroute frontend-air-viewer -n air-viewer |
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | Name: frontend-air-viewer Namespace: air-viewer Labels: <none> Annotations: kubectl.kubernetes.io/last-applied-configuration: {"apiVersion":"k8s.nginx.org/v1","kind":"VirtualServerRoute","metadata":{"annotations":{},"name":"frontend-air-viewer","namespace":"air-vi... API Version: k8s.nginx.org/v1 Kind: VirtualServerRoute Metadata: Creation Timestamp: 2020-02-17T07:10:40Z Generation: 1 Resource Version: 30179 Self Link: /apis/k8s.nginx.org/v1/namespaces/air-viewer/virtualserverroutes/frontend-air-viewer UID: 4a2a194a-1303-42c3-812a-1d35299a1bd0 Spec: Host: framgia2c.mylabserver.com Subroutes: Action: Pass: frontend-air-viewer Path: / Upstreams: Name: frontend-air-viewer Port: 80 Service: frontend-air-viewer Events: Type Reason Age From Message ---- ------ ---- ---- ------- Warning NoVirtualServersFound 2m31s nginx-ingress-controller No VirtualServer references VirtualServerRoute air-viewer/frontend-air-viewer Warning NoVirtualServersFound 2m30s nginx-ingress-controller No VirtualServer references VirtualServerRoute air-viewer/frontend-air-viewer Normal AddedOrUpdated 31s nginx-ingress-controller Configuration for air-viewer/frontend-air-viewer was added or updated Normal AddedOrUpdated 30s nginx-ingress-controller Configuration for air-viewer/frontend-air-viewer was added or updated |
Kiểm tra virtualserver air-viewer
1 2 | kubectl describe virtualserver air-viewer -n air-viewer |
output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | Name: air-viewer Namespace: air-viewer Labels: <none> Annotations: kubectl.kubernetes.io/last-applied-configuration: {"apiVersion":"k8s.nginx.org/v1","kind":"VirtualServer","metadata":{"annotations":{},"name":"air-viewer","namespace":"air-viewer"},"spec":... API Version: k8s.nginx.org/v1 Kind: VirtualServer Metadata: Creation Timestamp: 2020-02-17T07:12:38Z Generation: 1 Resource Version: 30469 Self Link: /apis/k8s.nginx.org/v1/namespaces/air-viewer/virtualservers/air-viewer UID: 7867f15d-4b5e-4fad-b279-25217c7cc18c Spec: Host: framgia2c.mylabserver.com Routes: Path: /api Route: air-viewer/backend-air-viewer Path: / Route: air-viewer/frontend-air-viewer Tls: Secret: air-viewer-secret Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal AddedOrUpdated 3m12s nginx-ingress-controller Configuration for air-viewer/air-viewer was added or updated Normal AddedOrUpdated 3m11s nginx-ingress-controller Configuration for air-viewer/air-viewer was added or updated |
Kiểm tra đối với trình duyệt truy cập
truy cập https://framgia2c.mylabserver.com/api/ chúng ta sẽ truy cập đến service backend do quy tắc prefix: /api
output:
truy cập https://framgia2c.mylabserver.com/vi/faq chúng ta sẽ dẫn đến info FAQ của air-viewer
output:
Hiện tại thì chúng ta chưa có client PI + sensor để thu thập dữ liệu không khí để gửi đến tên miền này, dữ liệu sẽ bị trống không được như trang http://airviewer.sun-asterisk.vn/
Do server dạng phục vụ mục đích học tập nên rất có thể chỉ hoạt động trong mấy tiếng rồi bị shutdown. Tên miền sẽ không truy cập được mong các bạn thông cảm
Một vài thí nghiệm nhỏ
Thí nghiệm 1 (loại bỏ 1 worker node)
Chúng ta sẽ shut down worker node 2 có domain framgia3c.mylabserver.com tức ko ảnh hưởng đến domain hiện tại và cũng ko làm thay đổi master node. Nhận thấy rằng app vẫn chạy bình thường, kiểm tra các pods được dịch chuyển sang worker node 1 để gồng gánh các pods đã bị shutdown.
Thí nghiệm 2(loại bỏ hẳn master node)
Chúng ta đang có 3 nodes, 1 master và 2 worker đang chạy và thử shutdown con master nodes. App vẫn chạy như bình thường, chỉ có chết 1 số service mà NuxtServerInit của Nuxt.js gọi API trên nền server kết nối với Flask sẽ bị chết, ngoài ra các services hay các API khác vẫn hoạt động như bình thường. Cũng giống như 1 tổ chức, leader nghỉ 1 hôm làm việc, member vẫn làm như bình thường theo lịch trình, nhưng chỉ cần thay đổi lịch trình, hay có vấn đề gì ở các member (shutdown tiếp cả worker node) lúc đó chắc chắn web của chúng ta sẽ bị chết. Do các pods sẽ không được điều phối nữa vì master node không còn quản lý hoạt động.
Qua 2 thí nghiệm trên rút ra được zero downtime của kubernetes nó mạnh đến cỡ nào
Kết thúc
Việc triển khai này cũng sẽ vẫn chưa đầy đủ, ngoài ra chúng ta cần kết hợp các công cụ khác của DevOps khác để quản lý các monitor, logs… thu thập phân tích báo cáo các logs tình trạng cuả hệ thống, rất nhiều thứ khác mà đến mình còn đang rất mung lung. Hứa hẹn sẽ đến với bài viết tương lai sau