Hub Integration
YouTrack is always connected to a Hub service. The Hub service supports authentication, authorization, and user management.
YouTrack Cloud instances are deployed with a built-in Hub service. The Hub Integration page provides an overview of this integration and its current status.
To access this page, open the 
Administration menu and select . Scroll to the bottom of the Server Configuration tab and click the link.
Deployment Mode
At the top of the Hub Integration page, you see a short description of the Hub service itself. You also see a description of the deployment modes that are available for the Hub integration. The description indicates which mode is currently enabled in YouTrack.
The following example shows a YouTrack Cloud installation that uses the built-in Hub service:
Health Indicators
The Hub Integration page displays a collection of health indicators that you can use to monitor the performance of your Hub integration. Abnormal conditions are described in red text. If any of these indicators display a status that is abnormal, contact support.
The following health indicators are displayed on this page:
Health Indicator | Description |
|---|---|
Connection to Hub | This indicates whether YouTrack has an active connection to the Hub service. Under normal conditions, the connection status is Active and working |
Hub event sync | This indicator displays the current status of the Hub event sync routine. Under normal conditions, the status is Active, syncing everything. |
Permission management | Here you see the current source that is used for access authorization. Under normal conditions, the source is Hub permission management. |
Hub URL | This is the URL of your Hub service. |
YouTrack Service ID | Here you find the ID that is assigned to YouTrack as a connected service in Hub. When a service is connected to Hub, it is assigned a unique service ID. If you want to connect to YouTrack using the REST API, you use this service ID for access and authorization. |
Operations
The Hub Integration page includes a set of tools that you can use to identify and fix problems with the Hub integration. The following operations are available:
Operation | Description |
|---|---|
Sync | For improved performance, there are a number of objects that are stored in both the Hub and YouTrack databases. This includes users and their related records for group membership, licenses, notification settings, and so on. These duplicated data structures are mapped using universally unique identifiers (UUIDs). A background routine regularly checks both sides of the mapping, eliminating possible data discrepancies. If you experience problems with the connection between YouTrack and Hub, the two databases can be out of sync. This operation synchronizes records for users and groups, using Hub as the data source. |
Export | An export routine regularly locates records that only exist in YouTrack and exports them to the Hub database. This operation locates orphan entities that have not been exported, assigns them UUIDs, and exports them to Hub. |
Run diagnostics | This operation conducts a range of self-checks that locate broken mappings, identify suspicious data patterns, and diagnose other problems with the Hub integration. If a problem is located, the diagnostics routine offers a quickfix action, when available. Quickfix actions are found in the Integration Log at the bottom of the page. There is also a routine diagnostics check that runs in the background. If the background routine detects a problem, you will also see suggestions for available quickfixes in the integration log. |
Invalidate caches | Hub provides YouTrack with a remote permission cache. This cache is used to check user permissions in memory without making network calls to Hub. During Hub outages or similar events, the permission cache may become corrupted. This operation flushes the local permission cache and reloads fresh data from Hub. If you experience unusual behavior related to access permissions in YouTrack, run this operation. |
Integration Log
At the bottom of the Hub Integration page, you find a list of recent events that have been written to the integration log.
Check this section of the page for quickfixes. Use quickfixes to resolve problems that are detected by the diagnostics routine.
Troubleshooting
This section describes the most frequently encountered problems with the Hub integration and the steps you can take to resolve them.
Connectivity Issues
The most obvious indication that there is a problem with your Hub integration is when users are unable to log in. This can mean that YouTrack is unable to establish a connection with the Hub service.
The Connection to Hub metric on the Hub Integration page displays the current connection status. If any of the following status messages are shown, there is a problem with YouTrack that requires the attention of the support team. To resolve any of these issues, submit a support request.
Empty Hub URL
Malformed Hub URL
Wrong Hub URL
YouTrack is not registered in Hub
YouTrack is registered in Hub, but its service ID and secret do not match
If any of the following conditions are present, follow the instructions provided to investigate and resolve the problem.
Condition — YouTrack cannot establish a connection to the Hub service. The Connection to Hub status reads Can't connect to Hub or Connection to Hub timed out. When you attempt to log in, you see the message Permission management service (Hub) is unavailable.
Cause | Solution |
|---|---|
The Hub service has shut down or is unresponsive. | Verify the condition by accessing the built-in Hub service. You can also access the Hub service directly in your web browser. Enter the hostname of your YouTrack instance, followed by If you are unable to establish a connection, submit a support request. |
Condition — YouTrack isn't trusted in Hub.
Cause | Solution |
|---|---|
In most cases, a user has accessed the list of services that are connected to Hub and has distrusted YouTrack. | Access the Services page in Hub and trust the YouTrack service.
|
Condition — Unknown host in Hub URL.
Cause | Solution |
|---|---|
The Hub domain name cannot be resolved by your DNS service. | Check your network infrastructure or contact your ISP. |
Hub Event Sync Issues
Under normal conditions, the Hub event sync status is Active, syncing everything. If the status displays Initialization error or Incompatible Hub server detected, submit a support request.
Permission Management Issues
Under normal conditions, the Permission management status is Hub permission management. If the status displays YouTrack permission management, submit a support request.
Broken Data Mappings
Data mapping is a virtual connection between objects that are stored in the YouTrack and Hub databases. For example, each user has two user profiles. For application features to work properly, these profiles must be linked.
Diagnostic routines check all mappings for consistency and offer quick fixes for any problems they encounter.
Condition — Users report problems with access in one or more projects.
Cause | Solution |
|---|---|
There are users who have been added to or removed from groups or other changes that were applied in YouTrack that are not mapped to the Hub database. |
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