Change a cluster configuration

After deploying a MOSK cluster, you can configure a few cluster settings using the MOSK management console as described below.

To change a cluster configuration:

Log in to the MOSK management console with the m:kaas:namespace@operator or m:kaas:namespace@writer permissions.
Select the required project.
On the Clusters page, click the More action icon in the last column of the required cluster and select Configure cluster.

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.

Proxy configuration

In the Proxies tab, configure proxy:

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 MOSK cluster creation.
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.

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.
Using the Container Registry drop-down menu, select the previously created Docker container registry name to add it to the running cluster.
Using the following options, define the maximum number of worker machines to be upgraded in parallel during cluster update:

Parallel Upgrade Of Worker Machines
The maximum number of the worker nodes to update simultaneously. It serves as an upper limit on the number of machines that are drained at a given moment of time. Defaults to 1.

Parallel Preparation For Upgrade Of Worker Machines
The maximum number of worker nodes being prepared at a given moment of time, which includes downloading of new artifacts. It serves as a limit for the network load that can occur when downloading the files to the nodes. Defaults to 50.

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.