Notes and Constraints

Only clusters of Kubernetes 1.15 or earlier are supported.

Installing a Chart

This following uses etcd as an example to describe how to create a workload using a sample chart. The procedure for installing other charts is the same.

1. Log in to the CCE console. In the navigation pane, choose Charts > Sample Charts.
2. On the Sample Charts tab page, you can view all available charts.
   • Sample Charts: provided by Helm to deploy workloads.

     You can click a chart to view the chart details, including chart introduction (overview and example), version record (change history of the current chart), and installation record (list of workloads created from the chart by the user).

   • Releases: list of workloads that are installed using a chart.

3. On the Sample Charts tab page, click Install Chart under a chart name, for example, etcd. Read the displayed information, select I have read the above statements, and click OK to start installing the chart.
   

   • Sample charts use images obtained from open source communities to provide basic cluster and chart functions.
   • CCE is not responsible for any fault that may occur after an official chart is used.
   • For commercial scenarios requiring security, stability, and reliability, you are advised to use HUAWEI CLOUD middleware and database services.

4. Set the installation parameters listed in Table 1. The parameters marked with an asterisk (*) are mandatory.

   Table 1 Installation parameters

   Parameter	Description
   * Release Name	Name of a release, for example, etcd-test.
   Chart Name	Name of the chart that is being installed, for example, etcd.
   * Chart Version	Version of a sample chart.
   * Cluster	Cluster to which the workload belongs.
   * Namespace	Namespace to which the new workload belongs. By default, this parameter is set to default.
   * Workload Deployment Specifications	Select a workload specification. You can also click Add Custom Specifications to customize the workload specification based on service requirements.

5. After the configuration is complete, you can choose to install all or custom installation.
   • Install Now: Click Install Now, confirm specifications, and click Submit. Go to 8 to view the workload that is successfully installed using the chart.
   • Next: Set the parameters for custom installation as described in 6.

6. (Optional) If you select Next, set related parameters.
   1. Set the storage and access mode parameters listed in Table 2.

      Table 2 Advanced settings for custom installation

      Parameter	Description
      Cloud Storage	If this parameter is set to Yes, the cloud storage is enabled. You can use the default storage allocation or click Edit to modify the storage subtype and capacity.
      Services	The default access setting is Internal access > Intra-cluster access. Intra-cluster access: The system automatically allocates a virtual IP address that can be accessed only by containers in a cluster. Intra-VPC access: A workload can be accessed by other workloads in the same VPC through a node IP address. You can also click Edit to modify the access settings. For details about the access settings, see Networking.

   2. Click Next, review the specifications, and click Submit.

7. Return to Releases tab page. The execution status is Installing. Wait until the installation is complete.
8. Check the release status. After the installation is successful, the value of Execution Status on the Releases tab page is Installation successful.
9. Click View Access Mode to view the parameters such as the access address.
10. Click the installed release to view the details.

    Table 3 Release details

    Tab	Description
    Workload List	Running statuses, types, and number of pods of workloads. Click a workload name to view details about the workload, such as CPU usage, memory usage, events, and container details.
    Release Parameters	Parameters that are configured.

Upgrading a Release

1. Log in to the CCE console. In the navigation pane, choose Charts > Sample Charts. Then, click the Releases tab.
2. Click Upgrade in the row where the desired workload resides and set the parameters for the workload.
3. Select a chart version.
4. Follow the prompts to modify the chart parameters.
5. Select an upgrade mode.
   • If no more configuration is required, click Upgrade at One Click.
   • To change the access mode, click Upgrade. For details about how to set the access mode, see Table 2. Click Next and then click Submit.

6. Go back to the release list. If the release status changes to Upgrade successful, the workload is successfully upgraded.

Rolling Back a Release

1. In the navigation pane on the CCE console, choose Charts > Sample Charts. Then, click the Releases tab.
2. Click More > Roll Back for the workload to be rolled back, select the workload version, and click Roll back to this version.

   In the workload list, if the status is Rollback successful, the workload is rolled back successfully.

Uninstalling a Release

1. Log in to the CCE console. In the navigation pane, choose Charts > Sample Charts. Then, click the Releases tab.
2. Click More > Uninstall next to the release to be uninstalled, and click OK. Exercise caution when performing this operation because workloads cannot be restored after the release is uninstalled.