Help Center/ Cloud Search Service/ User Guide/ Using OpenSearch for Data Search/ Accessing an OpenSearch Cluster/ Logging In to an OpenSearch Cluster Through Cerebro
Updated on 2025-09-05 GMT+08:00
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Logging In to an OpenSearch Cluster Through Cerebro

Cerebro is an open-source Elasticsearch web admin tool, designed for real-time monitoring and efficient cluster operations. Cerebro works for OpenSearch just as well. In CSS, Cerebro is pre-built for each OpenSearch cluster. You can start Cerebro with one click, without installing anything. Cerebro allows you to quickly check a cluster's health status, node distribution, and index details. For routine O&M tasks, including shard adjustment, index management, and performance monitoring, we recommend using Cerebro. Its intuitive cluster topology views and comprehensive management features streamline O&M workflows, reducing complexity while improving efficiency. Cerebro is suitable for different roles, including developers, O&M teams, and data analysts.

Accessing a Cluster Through Cerebro on the CSS Console

The OpenSearch clusters created in CSS provide a built-in Cerebro component, using which you can quickly access these clusters.

  1. Log in to the CSS management console.
  2. In the navigation pane on the left, choose Clusters > OpenSearch.
  3. Find the target cluster, and choose More > Cerebro in the Operation column. The Cerebro login page is displayed.
    • Non-security cluster: Click the cluster name on the Cerebro login page to go to the Cerebro console.
    • Security cluster: Click the cluster name on the Cerebro login page, enter the username and password, and click Authenticate to go to the Cerebro console. The default username is admin and the password is the one specified during cluster creation.
  4. After the login is successful, you can access clusters through Cerebro.

Accessing a Cluster Using an In-House Built Cerebro

  • When using in-house built Cerebro to access a cluster, make sure the network between them is connected.
  • Make sure the version of the in-house built Cerebro is compatible with the OpenSearch cluster version.
  1. Obtain the cluster access address. For details about how to obtain the cluster access address for different network configurations, see Network Configuration.
  2. Start Cerebro, and enter the cluster access address.
    • For a cluster in security mode, enter https://access address:9200.

      To log in to a cluster in security mode, you need to provide a username and password.

    • For a cluster in non-security mode, enter http://access address:9200.