豆莢yaml
containers:
- name: kiada
image: :kiada-0.1
volumeMounts:
- name: my-test
subPath: my-app.conf
mountPath: /html/my-app.conf
volumes:
- name: my-test
configMap:
name: kiada-config
配置圖
? v5-kubernetes git:(master) ? k get cm kiada-config -oyaml
apiVersion: v1
data:
key: value\n
status-message: This status message is set in the kiada-config config map2\n
kind: ConfigMap
metadata:
creationTimestamp: "2022-05-18T03:01:15Z"
name: kiada-config
namespace: default
resourceVersion: "135185128"
uid: 8c8875ce-47f5-49d4-8bc7-d8dbc2d7f7ba
吊艙有 my-app.conf
root@kiada2-7cc7bf55d8-m97tt:/# ls -al /html/my-app.conf/
total 12
drwxrwxrwx 3 root root 4096 May 21 02:29 .
drwxr-xr-x 1 root root 4096 May 21 02:29 ..
drwxr-xr-x 2 root root 4096 May 21 02:29 ..2022_05_21_02_29_41.554311630
lrwxrwxrwx 1 root root 31 May 21 02:29 ..data -> ..2022_05_21_02_29_41.554311630
lrwxrwxrwx 1 root root 10 May 21 02:29 key -> ..data/key
lrwxrwxrwx 1 root root 21 May 21 02:29 status-message -> ..data/status-message
root@kiada2-7cc7bf55d8-m97tt:/# ls -al /html/my-app.conf/
如果我在 pod yaml 中添加 subPath
spec:
containers:
- name: kiada
image: kiada-0.1
volumeMounts:
- name: my-test
subPath: my-app.conf
mountPath: /html/my-app.conf
volumes:
- name: my-test
configMap:
name: kiada-config
結果
root@kiada2-c89749c8-x9qwq:/# ls -al html/my-app.conf/
total 8
drwxrwxrwx 2 root root 4096 May 21 02:36 .
drwxr-xr-x 1 root root 4096 May 21 02:36 ..
為什么我使用 subPath，配置映射鍵不存在，怎么了？
uj5u.com熱心網友回復：
為了my-app.config在 Pod 的檔案系統中生成一個包含您的應用程式配置的檔案，必須確保該檔案存在于您的配置映射中：
apiVersion: v1
kind: ConfigMap
metadata:
name: kiada-config
data:
my-app.conf: |
key: value
status-message: This status message is set in the kiada-config config map2
然后，您可以像這樣將它安裝到您的 Pod 中：
apiVersion: v1
kind: Pod
metadata:
labels:
run: kiada
name: kiada
spec:
containers:
- name: kiada
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "tail -f /dev/null" ]
volumeMounts:
- mountPath: /html/
name: my-test
volumes:
- name: my-test
configMap:
name: kiada-config
在這種情況下不需要subPath欄位。如果您想將 重新映射到不同的名稱，這將很有用my-app.conf..
apiVersion: v1
kind: Pod
metadata:
labels:
run: kiada
name: kiada
spec:
containers:
- name: kiada
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "tail -f /dev/null" ]
volumeMounts:
- mountPath: /html/my-app-new-name.conf
name: my-test
subPath: my-app.conf
volumes:
- name: my-test
configMap:
name: kiada-config
..或者，如果您的 ConfigMap 中有多個組態檔，并且只想將其中一個映射到您的 Pod：
apiVersion: v1
kind: ConfigMap
metadata:
name: kiada-config
data:
my-app.conf: |
key: value
status-message: This status message is set in the kiada-config config map2
my-second-app.conf: |
error: not in use
apiVersion: v1
kind: Pod
metadata:
labels:
run: kiada
name: kiada
spec:
containers:
- name: kiada
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "tail -f /dev/null" ]
volumeMounts:
- mountPath: /html/my-app.conf
name: my-test
subPath: my-app.conf
volumes:
- name: my-test
configMap:
name: kiada-config
uj5u.com熱心網友回復：
您的 configmap 中沒有檔案，我建議您查看：https ://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-configmap/#add-configmap-data-to-a-volume
配置圖：
apiVersion: v1
kind: ConfigMap
metadata:
name: special-config
namespace: default
data:
SPECIAL_LEVEL: very
SPECIAL_TYPE: charm
POD 部署
apiVersion: v1
kind: Pod
metadata:
name: dapi-test-pod
spec:
containers:
- name: test-container
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "ls /etc/config/" ]
volumeMounts:
- name: config-volume
mountPath: /etc/config
volumes:
- name: config-volume
configMap:
name: special-config
restartPolicy: Never
當 pod 運行時，該命令ls /etc/config/會產生以下輸出：
SPECIAL_LEVEL
SPECIAL_TYPE
如果你想用不同的檔案名注入 configmap，你可以使用items
items:
- key: SPECIAL_LEVEL
path: keys
示例：https ://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-configmap/#add-configmap-data-to-a-specific-path-in-the-volume
轉載請註明出處，本文鏈接：https://www.uj5u.com/yidong/479416.html
標籤：Kubernetes