Change a cluster configuration

After deploying a managed cluster, you can configure the following cluster settings:

• Add or remove SSH keys.

• Enable or disable StackLight and configure its parameters if enabled. Alternatively, you can configure StackLight through kubeconfig as described in Configure StackLight.

• For Equinix Metal based clusters, enable manual Ceph configuration to assign Ceph roles to a specific machine.

To change a cluster configuration:

1. Log in to the Container Cloud web UI with the m:kaas:namespace@operator or m:kaas:namespace@writer permissions.

2. Select the required project.

3. On the Clusters page, click the More action icon in the last column of the required cluster and select Configure cluster.

4. In the Configure cluster window:

   • In the General Settings tab, you can:

     • Add or update proxy for a cluster by selecting the name of previously created proxy settings from the Proxy drop-down menu. To add or update proxy parameters:

       In the Proxies tab, configure proxy:

       1. Click Add Proxy.

       2. In the Add New Proxy wizard, fill out the form with the following parameters:

          Proxy configuration

          Parameter	Description
          Proxy Name	Name of the proxy server to use during cluster creation.
          Region	From the drop-down list, select the required region.
          HTTP Proxy	Add the HTTP proxy server domain name in the following format: http://proxy.example.com:port - for anonymous access http://user:password@proxy.example.com:port - for restricted access
          HTTPS Proxy	Add the HTTPS proxy server domain name in the same format as for HTTP Proxy.
          No Proxy	Comma-separated list of IP addresses or domain names.

          For implementation details, see Proxy and cache support.

       3. If your proxy requires a trusted CA certificate, select the CA Certificate check box and paste a CA certificate for a MITM proxy to the corresponding field or upload a certificate using Upload Certificate.

     • For Equinix Metal based clusters, enable Manual Ceph Configuration to assign Ceph Monitor and Manager or Storage roles to a specific machine.

       Once enabled, set Ceph machines roles using the Configure machine option located under the More action icon menu in the last column of the required machine.

       For available configuration options, see Ceph advanced configuration.

     • Using the SSH Keys drop-down menu, select the required previously created SSH key to add it to the running cluster. If required, you can add several keys or remove unused ones, if any.

       Note

       To delete an SSH key, use the SSH Keys tab of the main menu.

     • Applies since Container Cloud 2.21.0 and 2.21.1 for MOSK 22.5. Using the Container Registry drop-down menu, select the previously created Docker container registry name to add it to the running cluster.

   • In the Stacklight tab, select or deselect StackLight and configure its parameters if enabled.

     You can also update the default log level severity for all StackLight components as well as set a custom log level severity for specific StackLight components. For details about severity levels, see Log verbosity.

5. Click Update to apply the changes.