Manage ConfigMaps

Create a ConfigMap

You can create federated ConfigMaps or ConfigMaps for individual clusters.

Create a federated ConfigMap

1. Log on to the LHC console. In the navigation pane on the left, click Configuration Management > ConfigMaps.

2. Click Create. On the Create ConfigMap page, enter the following information:

   • Namespace: Select a namespace.

   • Name: Enter a name for the ConfigMap. The name must be unique within the namespace, up to 32 characters in length, and can contain lowercase letters, digits, and hyphens (-). It must start with a letter and end with a letter or a digit.

   • Configuration Source: Add key-value pairs. The key is the variable name and the value is the configuration data.

   • Custom Configuration: This option is disabled by default. You can enable it to customize the ConfigMap at the deployment unit level.

3. After you complete the configuration, click Create.

Create a single-cluster ConfigMap

1. Log on to the LHC console. In the navigation pane on the left, click Cluster Management > Clusters > Details to open the cluster list page.

2. Click the name of a cluster to open the Cluster Details page, and then click the Configuration tab.

3. In the navigation pane on the left, select ConfigMaps.

4. (Optional) Select a namespace. If you do not select one, the default namespace is used.

5. Click Create. On the Create ConfigMap page, enter the following information:

   • Namespace: The namespace to which the ConfigMap belongs. This is based on your selection in the previous step. The default value is default.

   • Name: Enter a name for the ConfigMap. The name must be unique within the namespace, up to 32 characters in length, and can contain lowercase letters, digits, and hyphens (-). It must start with a letter and end with a letter or a digit.

   • Configuration Source:

     • Key-Value Pair: Add key-value pairs. The key is the variable name and the value is the configuration data.

     • File: Upload a file to create the ConfigMap.

6. After you complete the configuration, click Submit.

Modify configuration items

Changes to a ConfigMap affect the applications that use it.

1. On the ConfigMaps list page, click the Name of a ConfigMap to open its details page.

2. You can make the following changes:

   • Click Edit to modify existing ConfigMap data, and then click Submit.

   • Click Add to add a key-value pair, and then click Submit.