k 8 s基本概念-Deploymentsの使い方

21083 ワード
k 8 s 使用 弾性計算
k 8 s基本概念-Deploymentsの使い方
2018/1/5
Deploymentsの使用例
  • app
    • を作成
  • appステータス
    • を表示
  • app
    • を更新
  • ロールバックapp
  • 拡張容量app
  • app
    • を削除
    appを作成
  • yamlプロファイルによるDeploymentの定義
  • apiVersionの書き方については、
    • を参照してください.
  • https://github.com/kubernetes/kubernetes/blob/630dbedef9de9ef678f16132796b103b8a03fcda/pkg/api/testing/defaulting_test.go
  • metadataのname
    • について
  • 定義deploymentの名前
  • 同じnamespaceの下の名前は
    • を繰り返すことはできません.
  • metadataのlabels
    • について
  • k/vキー値対
  • keyの命名規則
  • は
    • でなければなりません
  • は、64文字より小さい任意のprefixおよびnameを含む
    • .
  • nameはアルファベットと数字[a-z 0-9 A-Z]で始まりと終わり、真ん中はdashes(-)、underscores()、dots(.)、アルファベットと数字
    • であることができる.
  • prefixはオプションです.同様に、「kubernetes.io/」は
    • を議論しません.
  • Valueの命名規則
  • は、空白または64文字未満の
    • であってもよい
  • はアルファベットと数字[a-z 0-9 A-Z]で始まりと終わり、真ん中はdashes(-)、underscores()、dots(.)、アルファベットと数字
    • であることができる.
  • metadataのnamespace
    • について
  • デフォルトdefault 
    [root@tvm-00 ~]# cat ~/k8s_install/test/whoami/app.yaml
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
name: test-deployment-app-whoami
labels:
app: whoami
spec:
replicas: 3
selector:
matchLabels:
app: whoami
template:
metadata:
labels:
app: whoami
spec:
containers:
- name: whoami
  image: opera443399/whoami:0.9
  ports:
    - containerPort: 80
  • app 
    ###   ：   --record         history      rolling update   
[root@tvm-00 ~]# kubectl apply -f ~/k8s_install/test/whoami/app.yaml --record
deployment "test-deployment-app-whoami" created
    • を実行
    appステータスの表示
  • 情報表示
    [root@tvm-00 ~]# kubectl get deployments
NAME                         DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
test-deployment-app-whoami   3         3         3            3           5m
[root@tvm-00 ~]# kubectl get rs
NAME                                    DESIRED   CURRENT   READY     AGE
test-deployment-app-whoami-6cf9cd6bf4   3         3         3         5m
[root@tvm-00 ~]# kubectl get pods
NAME                                          READY     STATUS    RESTARTS   AGE
test-deployment-app-whoami-6cf9cd6bf4-59h9x   1/1       Running   0          5m
test-deployment-app-whoami-6cf9cd6bf4-978ht   1/1       Running   0          5m
test-deployment-app-whoami-6cf9cd6bf4-w5dhk   1/1       Running   0          5m
[root@tvm-00 ~]# kubectl get pods --show-labels
NAME                                          READY     STATUS    RESTARTS   AGE       LABELS
test-deployment-app-whoami-6cf9cd6bf4-59h9x   1/1       Running   0          7m        app=whoami,pod-template-hash=2795782690
test-deployment-app-whoami-6cf9cd6bf4-978ht   1/1       Running   0          7m        app=whoami,pod-template-hash=2795782690
test-deployment-app-whoami-6cf9cd6bf4-w5dhk   1/1       Running   0          7m        app=whoami,pod-template-hash=2795782690
    • appの更新
  • ミラーを1回更新してみた後、情報を確認し、バージョン履歴
    
###    image      ：
[root@tvm-00 ~]# kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.7
deployment "test-deployment-app-whoami" image updated
    • に重点を置いてください.
    情報の表示
    [root@tvm-00 ~]# kubectl rollout status deployments/test-deployment-app-whoamideployment "test-deployment-app-whoami"successfully rolled out[root@tvm-00 ~]# kubectl get deploymentsNAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGEtest-deployment-app-whoami 3 3 3 3 11m[root@tvm-00 ~]# kubectl get rsNAME DESIRED CURRENT READY AGEtest-deployment-app-whoami-68c6cd964 3 3 3 42stest-deployment-app-whoami-6cf9cd6bf4 0 0 0 11m[root@tvm-00 ~]# kubectl get podsNAME READY STATUS RESTARTS AGEtest-deployment-app-whoami-68c6cd964-bfznh 1/1 Running 0 54stest-deployment-app-whoami-68c6cd964-r7vp5 1/1 Running 0 56stest-deployment-app-whoami-68c6cd964-v***j 1/1 Running 0 53s
    [root@tvm-00~]#kubectl describe deployments/test-deployment-app-whoamiName:test-deployment-app-whoamiNamespace:defaultCreationTimestamp:Wed,27 Dec 2017 17:44:30+0800 Labels:app=whoamiAnnotations:deployment.kubernetes.io/revision=2 kubectl.kubernetes.io/last-applied-configuration=(略)kubernetes.io/change-cause=kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.7Selector: app=whoamiReplicas: 3 desired
    3 updated
    3 total
    3 available
    0 unavailableStrategyType: RollingUpdateMinReadySeconds: 0RollingUpdateStrategy: 25% max unavailable, 25% max surgePod Template:Labels: app=whoamiContainers:whoami:Image: opera443399/whoami:0.7Port: 80/TCPEnvironment: Mounts: Volumes: Conditions:Type Status Reason
    Available True MinimumReplicasAvailableProgressing True NewReplicaSetAvailableOldReplicaSets: NewReplicaSet: test-deployment-app-whoami-68c6cd964 (3/3 replicas created)Events:Type Reason Age From Message
    Normal ScalingReplicaSet 12m deployment-controller Scaled up replica set test-deployment-app-whoami-6cf9cd6bf4 to 3Normal ScalingReplicaSet 1m deployment-controller Scaled up replica set test-deployment-app-whoami-68c6cd964 to 1Normal ScalingReplicaSet 1m deployment-controller Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 2Normal ScalingReplicaSet 1m deployment-controller Scaled up replica set test-deployment-app-whoami-68c6cd964 to 2Normal ScalingReplicaSet 1m deployment-controller Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 1Normal ScalingReplicaSet 1m deployment-controller Scaled up replica set test-deployment-app-whoami-68c6cd964 to 3Normal ScalingReplicaSet 1m deployment-controller Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 0
    [root@tvm-00 ~]# kubectl rollout history deployments/test-deployment-app-whoamideployments "test-deployment-app-whoami"REVISION CHANGE-CAUSE1 kubectl apply --filename=/root/k8s_install/test/whoami/app.yaml --record=true2 kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.7 
    
-     1     ，      
```bash
[root@tvm-00 ~]# kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.8
deployment "test-deployment-app-whoami" image updated
[root@tvm-00 ~]# kubectl rollout status deployments/test-deployment-app-whoami
deployment "test-deployment-app-whoami" successfully rolled out
[root@tvm-00 ~]# kubectl get deployments
NAME                         DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
test-deployment-app-whoami   3         3         3            3           17m
[root@tvm-00 ~]# kubectl get rs
NAME                                    DESIRED   CURRENT   READY     AGE
test-deployment-app-whoami-68b94dd7bf   3         3         3         46s
test-deployment-app-whoami-68c6cd964    0         0         0         6m
test-deployment-app-whoami-6cf9cd6bf4   0         0         0         17m
[root@tvm-00 ~]# kubectl get pods
NAME                                          READY     STATUS    RESTARTS   AGE
test-deployment-app-whoami-68b94dd7bf-5g89x   1/1       Running   0          45s
test-deployment-app-whoami-68b94dd7bf-75xjd   1/1       Running   0          52s
test-deployment-app-whoami-68b94dd7bf-pchpw   1/1       Running   0          49s
[root@tvm-00 ~]# kubectl describe deployments/test-deployment-app-whoami
Name:                   test-deployment-app-whoami
Namespace:              default
CreationTimestamp:      Wed, 27 Dec 2017 17:44:30 +0800
Labels:                 app=whoami
Annotations:            deployment.kubernetes.io/revision=3
                        kubectl.kubernetes.io/last-applied-configuration=（ ）
                        kubernetes.io/change-cause=kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.8
Selector:               app=whoami
Replicas:               3 desired | 3 updated | 3 total | 3 available | 0 unavailable
StrategyType:           RollingUpdate
MinReadySeconds:        0
RollingUpdateStrategy:  25% max unavailable, 25% max surge
Pod Template:
  Labels:  app=whoami
  Containers:
   whoami:
    Image:        opera443399/whoami:0.8
    Port:         80/TCP
    Environment:  
    Mounts:       
  Volumes:        
Conditions:
  Type           Status  Reason
  ----           ------  ------
  Available      True    MinimumReplicasAvailable
  Progressing    True    NewReplicaSetAvailable
OldReplicaSets:  
NewReplicaSet:   test-deployment-app-whoami-68b94dd7bf (3/3 replicas created)
Events:
  Type    Reason             Age              From                   Message
  ----    ------             ----             ----                   -------
  Normal  ScalingReplicaSet  18m              deployment-controller  Scaled up replica set test-deployment-app-whoami-6cf9cd6bf4 to 3
  Normal  ScalingReplicaSet  7m               deployment-controller  Scaled up replica set test-deployment-app-whoami-68c6cd964 to 1
  Normal  ScalingReplicaSet  7m               deployment-controller  Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 2
  Normal  ScalingReplicaSet  7m               deployment-controller  Scaled up replica set test-deployment-app-whoami-68c6cd964 to 2
  Normal  ScalingReplicaSet  7m               deployment-controller  Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 1
  Normal  ScalingReplicaSet  7m               deployment-controller  Scaled up replica set test-deployment-app-whoami-68c6cd964 to 3
  Normal  ScalingReplicaSet  7m               deployment-controller  Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 0
  Normal  ScalingReplicaSet  2m               deployment-controller  Scaled up replica set test-deployment-app-whoami-68b94dd7bf to 1
  Normal  ScalingReplicaSet  2m               deployment-controller  Scaled down replica set test-deployment-app-whoami-68c6cd964 to 2
  Normal  ScalingReplicaSet  2m               deployment-controller  Scaled up replica set test-deployment-app-whoami-68b94dd7bf to 2
  Normal  ScalingReplicaSet  2m (x3 over 2m)  deployment-controller  (combined from similar events): Scaled down replica set test-deployment-app-whoami-68c6cd964 to 0
[root@tvm-00 ~]# kubectl rollout history deployments/test-deployment-app-whoami
deployments "test-deployment-app-whoami"
REVISION  CHANGE-CAUSE
1         kubectl apply --filename=/root/k8s_install/test/whoami/app.yaml --record=true
2         kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.7
3         kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.8

###     ，       3

    ロールバックapp
  • 前バージョン
    
[root@tvm-00 ~]# kubectl rollout undo deployments/test-deployment-app-whoami
deployment "test-deployment-app-whoami"
[root@tvm-00 ~]# kubectl rollout history deployments/test-deployment-app-whoami
deployments "test-deployment-app-whoami"
REVISION  CHANGE-CAUSE
1         kubectl apply --filename=/root/k8s_install/test/whoami/app.yaml --record=true
3         kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.8
4         kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.7
    • にロールバック
    [root@tvm-00 ~]# kubectl get rsNAME DESIRED CURRENT READY AGEtest-deployment-app-whoami-68b94dd7bf 0 0 0 16mtest-deployment-app-whoami-68c6cd964 3 3 3 22mtest-deployment-app-whoami-6cf9cd6bf4 0 0 0 33m
    [root@tvm-00~]#kubectl describe deployments/test-deployment-app-whoamiName:test-deployment-app-whoamiNamespace:defaultCreationTimestamp:Wed,27 Dec 2017 17:44:30+0800 Labels:app=whoamiAnnotations:deployment.kubernetes.io/revision=4 kubectl.kubernetes.io/last-applied-configuration=(略)kubernetes.io/change-cause=kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.7Selector: app=whoamiReplicas: 3 desired
    3 updated
    3 total
    3 available
    0 unavailableStrategyType: RollingUpdateMinReadySeconds: 0RollingUpdateStrategy: 25% max unavailable, 25% max surgePod Template:Labels: app=whoamiContainers:whoami:Image: opera443399/whoami:0.7Port: 80/TCPEnvironment: Mounts: Volumes: Conditions:Type Status Reason
    Available True MinimumReplicasAvailableProgressing True NewReplicaSetAvailableOldReplicaSets: NewReplicaSet: test-deployment-app-whoami-68c6cd964 (3/3 replicas created)Events:Type Reason Age From Message
    Normal ScalingReplicaSet 27m deployment-controller Scaled up replica set test-deployment-app-whoami-6cf9cd6bf4 to 3Normal ScalingReplicaSet 17m deployment-controller Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 2Normal ScalingReplicaSet 17m deployment-controller Scaled up replica set test-deployment-app-whoami-68c6cd964 to 2Normal ScalingReplicaSet 17m deployment-controller Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 1Normal ScalingReplicaSet 17m deployment-controller Scaled up replica set test-deployment-app-whoami-68c6cd964 to 3Normal ScalingReplicaSet 16m deployment-controller Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 0Normal ScalingReplicaSet 11m deployment-controller Scaled up replica set test-deployment-app-whoami-68b94dd7bf to 1Normal ScalingReplicaSet 11m deployment-controller Scaled down replica set test-deployment-app-whoami-68c6cd964 to 2Normal ScalingReplicaSet 11m deployment-controller Scaled up replica set test-deployment-app-whoami-68b94dd7bf to 2Normal ScalingReplicaSet 1m (x2 over 17m) deployment-controller Scaled up replica set test-deployment-app-whoami-68c6cd964 to 1Normal DeploymentRollback 1m deployment-controller Rolled back deployment "test-deployment-app-whoami"to revision 2Normal ScalingReplicaSet 1m (x8 over 11m) deployment-controller (combined from similar events): Scaled down replica set test-deployment-app-whoami-68b94dd7bf to 0 
    
-         
```bash
[root@tvm-00 ~]# kubectl rollout undo deployments/test-deployment-app-whoami --to-revision=1
deployment "test-deployment-app-whoami"
[root@tvm-00 ~]# kubectl rollout history deployments/test-deployment-app-whoami
deployments "test-deployment-app-whoami"
REVISION  CHANGE-CAUSE
3         kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.8
4         kubectl set image deployments/test-deployment-app-whoami whoami=opera443399/whoami:0.7
5         kubectl apply --filename=/root/k8s_install/test/whoami/app.yaml --record=true

[root@tvm-00 ~]# kubectl get rs
NAME                                    DESIRED   CURRENT   READY     AGE
test-deployment-app-whoami-68b94dd7bf   0         0         0         16m
test-deployment-app-whoami-68c6cd964    0         0         0         22m
test-deployment-app-whoami-6cf9cd6bf4   3         3         3         33m

[root@tvm-00 ~]# kubectl describe deployments/test-deployment-app-whoami
Name:                   test-deployment-app-whoami
Namespace:              default
CreationTimestamp:      Wed, 27 Dec 2017 17:44:30 +0800
Labels:                 app=whoami
Annotations:            deployment.kubernetes.io/revision=5
                        kubectl.kubernetes.io/last-applied-configuration=（ ）
                        kubernetes.io/change-cause=kubectl apply --filename=/root/k8s_install/test/whoami/app.yaml --record=true
Selector:               app=whoami
Replicas:               3 desired | 3 updated | 3 total | 3 available | 0 unavailable
StrategyType:           RollingUpdate
MinReadySeconds:        0
RollingUpdateStrategy:  25% max unavailable, 25% max surge
Pod Template:
  Labels:  app=whoami
  Containers:
   whoami:
    Image:        opera443399/whoami:0.9
    Port:         80/TCP
    Environment:  
    Mounts:       
  Volumes:        
Conditions:
  Type           Status  Reason
  ----           ------  ------
  Available      True    MinimumReplicasAvailable
  Progressing    True    NewReplicaSetAvailable
OldReplicaSets:  
NewReplicaSet:   test-deployment-app-whoami-6cf9cd6bf4 (3/3 replicas created)
Events:
  Type    Reason              Age                 From                   Message
  ----    ------              ----                ----                   -------
  Normal  ScalingReplicaSet   29m                 deployment-controller  Scaled up replica set test-deployment-app-whoami-6cf9cd6bf4 to 3
  Normal  ScalingReplicaSet   19m                 deployment-controller  Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 2
  Normal  ScalingReplicaSet   19m                 deployment-controller  Scaled up replica set test-deployment-app-whoami-68c6cd964 to 2
  Normal  ScalingReplicaSet   19m                 deployment-controller  Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 1
  Normal  ScalingReplicaSet   19m                 deployment-controller  Scaled up replica set test-deployment-app-whoami-68c6cd964 to 3
  Normal  ScalingReplicaSet   19m                 deployment-controller  Scaled down replica set test-deployment-app-whoami-6cf9cd6bf4 to 0
  Normal  ScalingReplicaSet   13m                 deployment-controller  Scaled up replica set test-deployment-app-whoami-68b94dd7bf to 1
  Normal  ScalingReplicaSet   13m                 deployment-controller  Scaled down replica set test-deployment-app-whoami-68c6cd964 to 2
  Normal  ScalingReplicaSet   13m                 deployment-controller  Scaled up replica set test-deployment-app-whoami-68b94dd7bf to 2
  Normal  ScalingReplicaSet   3m (x2 over 19m)    deployment-controller  Scaled up replica set test-deployment-app-whoami-68c6cd964 to 1
  Normal  DeploymentRollback  3m                  deployment-controller  Rolled back deployment "test-deployment-app-whoami" to revision 2
  Normal  DeploymentRollback  29s                 deployment-controller  Rolled back deployment "test-deployment-app-whoami" to revision 1
  Normal  ScalingReplicaSet   27s (x12 over 13m)  deployment-controller  (combined from similar events): Scaled up replica set test-deployment-app-whoami-6cf9cd6bf4 to 3
  Normal  ScalingReplicaSet   27s                 deployment-controller  Scaled down replica set test-deployment-app-whoami-68c6cd964 to 1
  Normal  ScalingReplicaSet   26s                 deployment-controller  Scaled down replica set test-deployment-app-whoami-68c6cd964 to 0

    拡張容量app
  • 拡張
    
###         10  
[root@tvm-00 ~]# kubectl scale deployments/test-deployment-app-whoami --replicas=10
deployment "test-deployment-app-whoami" scaled
    • 情報の表示
    [root@tvm-00 ~]# kubectl get deploymentsNAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGEtest-deployment-app-whoami 10 10 10 10 39m[root@tvm-00 ~]# kubectl get rsNAME DESIRED CURRENT READY AGEtest-deployment-app-whoami-68b94dd7bf 0 0 0 23mtest-deployment-app-whoami-68c6cd964 0 0 0 29mtest-deployment-app-whoami-6cf9cd6bf4 10 10 10 39m[root@tvm-00 ~]# kubectl get podsNAME READY STATUS RESTARTS AGEtest-deployment-app-whoami-6cf9cd6bf4-2dd5m 1/1 Running 0 36stest-deployment-app-whoami-6cf9cd6bf4-4nx7x 1/1 Running 0 36stest-deployment-app-whoami-6cf9cd6bf4-bb7v7 1/1 Running 0 10mtest-deployment-app-whoami-6cf9cd6bf4-c7cht 1/1 Running 0 36stest-deployment-app-whoami-6cf9cd6bf4-dph22 1/1 Running 0 36stest-deployment-app-whoami-6cf9cd6bf4-jhtqz 1/1 Running 0 10mtest-deployment-app-whoami-6cf9cd6bf4-jjfp5 1/1 Running 0 36stest-deployment-app-whoami-6cf9cd6bf4-nlqq5 1/1 Running 0 36stest-deployment-app-whoami-6cf9cd6bf4-px24h 1/1 Running 0 10mtest-deployment-app-whoami-6cf9cd6bf4-rldhd 1/1 Running 0 36s 
    
-   
```bash
###         5  
[root@tvm-00 ~]# kubectl scale deployments/test-deployment-app-whoami --replicas=5
deployment "test-deployment-app-whoami" scaled

###     
[root@tvm-00 ~]# kubectl get deployments
NAME                         DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
test-deployment-app-whoami   5         5         5            5           41m
[root@tvm-00 ~]# kubectl get rs
NAME                                    DESIRED   CURRENT   READY     AGE
test-deployment-app-whoami-68b94dd7bf   0         0         0         25m
test-deployment-app-whoami-68c6cd964    0         0         0         30m
test-deployment-app-whoami-6cf9cd6bf4   5         5         5         41m
[root@tvm-00 ~]# kubectl get pods
NAME                                          READY     STATUS    RESTARTS   AGE
test-deployment-app-whoami-6cf9cd6bf4-2dd5m   1/1       Running   0          2m
test-deployment-app-whoami-6cf9cd6bf4-bb7v7   1/1       Running   0          12m
test-deployment-app-whoami-6cf9cd6bf4-c7cht   1/1       Running   0          2m
test-deployment-app-whoami-6cf9cd6bf4-jhtqz   1/1       Running   0          12m
test-deployment-app-whoami-6cf9cd6bf4-px24h   1/1       Running   0          12m

    削除
    [root@tvm-00 test]# kubectl delete deployments/test-deployment-app-whoami
deployment "test-deployment-app-whoami" deleted
[root@tvm-00 test]# kubectl get deployments
No resources found.
    オーロラI 1620 G 30は、デバイスのcpu、メモリ、記憶などのパラメータ情報を取得する.
    疑問:多生産と多消費操作値-仮死由来:『JAVAマルチスレッドプログラミングコア技術』3.1.1.1.2