Tarantool Cluster Manager 1.1

Data access

An important update of TCM 1.1.0 is a set of features that enable access to clusters“ stored data.

The instance space explorer shows all spaces that exist on an instance, including system spaces. On its pages, you can view and edit the stored data. To open the instance explorer, find the instance on the cluster stateboard and click its name to open its details page. Then click Explorer in the Actions menu in the top right corner.

In the development mode, the instance explorer also includes the schema editor. It allows you to add new and edit existing spaces.

For clusters that use the CRUD module, there is also the CRUD explorer that enables access to data in user spaces across the entire cluster. The CRUD explorer is located on the Tuples page.

Access control list

TCM’s access control list (ACL) enables control over user access to particular spaces and stored functions in the web interface.

For each user that has access to a cluster, you can enable the use of ACL on this cluster. This restricts this user’s access to the cluster’s spaces and functions unless they are explicitly specified in the ACL. The ACL must contain an entry for each such space and function.

Users with ACL off have access to all spaces and functions on clusters according to their cluster permissions.

The tools for managing ACL are located on the new ACL page.

API tokens

TCM 1.1 supports token authentication of external requests. Users can generate API tokens in their user settings dialog. An API token has the same permissions as its creator.

Stateboard improvements

TCM 1.1 extends the functionality of the cluster stateboard to improve the cluster management experience. Here are the key updates of the stateboard:

• More flexible instance grouping.
• Stateful failover and switchover controls.
• Runtime issues on the stateboard.

Instance interaction

The instance management dialog has been extended with new functions:

• A new terminal that uses the tt interactive console.
• SQL query execution terminal.
• Stored functions editor.
• Slab visualization.

Cluster metrics

Starting from version 1.1.0, TCM displays metrics of connected clusters. You can view metrics in TCM one by one, visualizing them as charts or tables. The cluster metrics are shown on the new Cluster metrics page.

For more complex monitoring, you can use dedicated solutions, for example, Prometheus. It can integrate with TCM using the API tokens.

Configuration validation

The cluster configuration editor now validates the configuration semantically. Previously, TCM was able to highlight the syntax errors in configurations, for example, incorrect spelling of option names or hierarchy. In TCM 1.1.0, the editor checks and highlights possible semantic issues, such as:

• Users without passwords.
• Users with the super role.
• Absence of leader instances in replica sets.

Onboarding tutorial

TCM 1.1.0 includes an interactive tutorial that takes new users through its main features and pages. It opens automatically after the first start.