Clique as a YT operation

In the YTsaurus system, a CHYT clique is not a separate entity but a standard distributed Vanilla operation that consists of a set of tasks — jobs.

The YT operation interface helps you track the click’s status, analyze jobs, and troubleshoot issues if something goes wrong.

How to open the YT operation web interface

You can open the YT operation interface in three ways:

• Using the link in the YT Operation Id parameter from the clique interface;
• Using the link from the Current operation id field in the Strawberry operation description, which is stored in Cypress at the path //sys/strawberry/chyt/<alias>;
• Via the CLI, using the link from the output of the yt clickhouse ctl status command.

Key interface blocks

1. Basic information about the YT operation.
2. Job summary.
3. Tabs panel.
4. Description section.
5. Tasks section.

Blocks that are useful for practical tasks:

1. Description section (4). The section is located on the Details tab in the Tabs panel (3). It contains system information about the clique and a number of useful parameters — for example, CHYT and ClickHouse versions. To learn how to view component versions, see the Get CHYT and ClickHouse versions section.

2. Job summary section (2). It is located to the right of the basic operation information (1). It displays information about job statuses: Running, Completed, Failed. The statuses are links. They lead to the Jobs tab in the tabs panel (3), where you can view data for each job and filter the job list by various parameters. For more information on job diagnostics, see the Check failed jobs section. Keep in mind that one job corresponds to one instance in the clique — that is, to one ClickHouse server.

3. The Tasks section (5) displays job statistics. In the context of CHYT instances, the following terms are used:

   Status	Meaning	What to look for
   total	Total number of instances	—
   running	The instance is up and running	If running = total, everything is fine
   pending	The instance has not been launched yet	A non‑zero value means the clique lacks resources to launch all instances
   completed	The instance was shut down normally — it completed all the queries	—
   failed	The instance crashed	Common causes: out‑of‑memory (OOM) or an error in the CHYT / ClickHouse code
   aborted	The instance was aborted	If the reason is preemption, it indicates a lack of resources
   lost	—	A failure outside CHYT, in other components