Configuration Management

When you need to manage values that change inside a container across various environments such as development and production, creating separate images to handle them via environment variables is inconvenient and incurs significant cost waste. In Kubernetes, you can manage environment variables or configuration values as variables so they can be changed externally and injected when a Pod is created; at this point, you can use ConfigMap and Secret.

Managing ConfigMaps

You can create and manage the Config information used in a namespace as a ConfigMap.

Create ConfigMap

To create a ConfigMap, follow these steps.

1. Click the All Services > Container > Kubernetes Engine menu. 1. Go to the Service Home page of Kubernetes Engine.
2. On the Service Home page, click ConfigMap under the Configuration menu. 2. Go to the ConfigMap List page.
3. On the ConfigMap list page, select the cluster and namespace from the list in the upper left, then click Create Object.
4. In the Object Creation Popup, enter the object information and click the Create button.

Check ConfigMap detailed information

To view detailed ConfigMap information, follow these steps.

1. Click the All Services > Container > Kubernetes Engine menu. 1. Go to the Service Home page of Kubernetes Engine.
2. On the Service Home page, click ConfigMap under the Configuration menu. 2. Navigate to the ConfigMap List page.
3. On the ConfigMap List page, select the cluster and namespace from the list in the upper left, then click View.
4. Select the item you want to view detailed information for on the ConfigMap List page. 4. Navigate to the ConfigMap Details page.
   • If you select System Object Display at the top of the list, all items except the Kubernetes object entries will be shown.
5. Click each tab to view the service information.

   Category	Detailed description
   Delete ConfigMap	Delete ConfigMap
   Detailed Information	Detailed ConfigMap information can be viewed
   YAML	The ConfigMap’s resource file can be edited in the YAML editor Click the Edit button, modify the resource, then click the Done button to apply the changes When editing content, you can click the Diff button to view the changed content
   event	Check events that occurred in the ConfigMap
   Account information	Check basic information about the Account, such as name, location, and creation date/time.
   Metadata Information	Check the ConfigMap’s metadata information
   Object Information	Check the object information of the ConfigMap In Data, - - -separates rows, and value is displayed in a textarea format The binary data value outputs its length

   Table. ConfigMap detailed information items

Delete ConfigMap

To delete a ConfigMap, follow these steps.

1. Click the All Services > Container > Kubernetes Engine menu. 1. Navigate to the Service Home page of Kubernetes Engine.
2. On the Service Home page, click ConfigMap under the Configuration menu. 2. Navigate to the ConfigMap list page.
3. ConfigMap List page, after selecting the cluster and namespace from the list in the top‑left corner, click View.
4. Select the item you want to delete on the ConfigMap List page. 4. Navigate to the ConfigMap Details page.
5. On the ConfigMap Details page, click Delete ConfigMap.
6. Notification dialog appears, click the Confirm button.

Manage Secrets

Using secrets allows you to securely store and manage sensitive information such as passwords, OAuth tokens, and SSH keys.

Create Secret

To create a secret, follow these steps.

1. All Services > Container > Kubernetes Engine menu, click it. 1. Go to the Service Home page of Kubernetes Engine.
2. On the Service Home page, click Secret under the Configuration menu. 2. Go to the Secret List page.
3. Secret List page, after selecting the cluster and namespace from the list at the top left, click Create Object.
4. Enter the object information in the Object Creation Popup and click the Create button.

Check secret detailed information

To view the secret details, follow these steps.

1. Click the All Services > Container > Kubernetes Engine menu. 1. Go to the Service Home page of Kubernetes Engine.
2. On the Service Home page, click Secret under the Configuration menu. 2. Navigate to the Secret List page.
3. On the Secret List page, select the cluster and namespace from the list at the top left, then click View.
4. Select the item you want to view details for on the Secret List page. 4. Navigate to the Secret Detail page.
   • If you select System Object Display at the top of the list, all items except the Kubernetes object entries will be shown.
5. Click each tab to view the service information.

   Category	Detailed description
   Delete Secret	Delete the secret
   Detailed Information	You can view detailed information of the secret
   YAML	The secret’s resource file can be edited in the YAML editor Click the Edit button, modify the resource, then click the Done button to apply the changes When editing content, you can click the Diff button to view the changed content
   event	Check events that occurred within the secret
   Account Information	Check basic information about the Account, such as its name, location, and creation date/time.
   metadata information	Check the metadata information of the secret
   Object Information	Check the secret object’s information

   Table. Secret detailed information items

Delete Secret

To delete the secret, follow these steps.

1. Click the All Services > Container > Kubernetes Engine menu. 1. Navigate to the Service Home page of Kubernetes Engine.
2. On the Service Home page, click Secret under the Configuration menu. 2. Go to the Secret List page.
3. Secret List page, select the cluster and namespace from the list at the top left, then click View.
4. Select the item you want to delete on the Secret List page. 4. Go to the Secret Detail page.
5. On the Secret Details page, click Delete Secret.
6. Notification dialog appears, click the Confirm button.