Esta página aún no está disponible en su idioma local. Estamos trabajando arduamente para agregar más versiones de idiomas. Gracias por tu apoyo.
- What's New
- Function Overview
- Service Overview
- Getting Started
-
User Guide
- Getting Started
- Creating and Accessing a Cluster
- Scaling In/Out a Cluster
- Upgrading Versions
- Importing Data to Elasticsearch
-
Managing Elasticsearch Clusters
- Cluster and Storage Capacity Statuses
- Introduction to the Cluster List
- Index Backup and Restoration
- Binding an Enterprise Project
- Restarting a Cluster
- Migrating Cluster Data
- Deleting a Cluster
- Managing Tags
- Public Network Access
- Managing Logs
- Managing Plugins
- Hot and Cold Data Storage
- Configuring Parameters
- VPC Endpoint Service
- Kibana Public Access
- Vector Retrieval
- Working with Kibana
- Elasticsearch SQL
- Connecting a Cluster to a Dedicated Load Balancer
- Enhanced Features
- Monitoring
- Auditing
- Change History
- Best Practices
-
API Reference
- Before You Start
- API Overview
- Calling APIs
- Getting Started
-
Cluster Management
- Creating a cluster
- Querying the Cluster List
- Querying Cluster Details
- Deleting a Cluster
- Renaming a Cluster
- Changing the Password of a Cluster
- Restarting a Cluster
- Scaling Out a Cluster
- Adding Instances and Expanding Instance Storage Capacity
- Changing Specifications
- Obtaining the Instance Specifications List
- Querying All Tags
- Querying Tags of a Specified Cluster
- Adding Tags to a Cluster
- Deleting a Cluster Tag
- Adding or Deleting Cluster Tags in Batches
- Changing the Specifications of a Specified Node Type
- Scaling In a Cluster by Removing a Specific Node
- Scaling In Nodes of a Specific Type
- Downloading a Security Certificate
- Replacing a Node
- Configuring the Security Mode.
- Adding Independent Masters and Clients
- Changing the Security Group
- Kibana Public Network Access
- Log Management
- Public Network Access
-
Snapshot Management
- (Not Recommended) Automatically Setting Basic Configurations of a Cluster Snapshot
- Modifying Basic Configurations of a Cluster Snapshot
- Manually Creating a Snapshot
- Restoring a Snapshot
- Deleting a Snapshot
- Configuring the Automatic Snapshot Creation Policy
- Querying the Automatic Snapshot Creation Policy
- Querying a Snapshot List
- Disabling the Snapshot Function
- VPC Endpoint
- Parameter Configuration
- Common Parameters
- Change History
- SDK Reference
-
FAQs
- General Consulting
-
Accessing CSS Clusters
- How Do I Reset the Administrator Password of a Security-mode Cluster in CSS?
- Are Ports 9200 and 9300 Open for Access to Elasticsearch Clusters?
- How Do I Use a NAT Gateway to Access CSS from the Internet?
- How Do I Connect In-house Developed Kibana to an Elasticsearch Cluster in CSS?
- How Do I Connect In-house Developed OpenSearch Dashboards to an OpenSearch Cluster in CSS?
- Migrating CSS Clusters
-
Using CSS Cluster Search Engines
- Why Are Newly Created Index Shards Allocated to a Single Node in CSS?
- How Do I Create a Type Under an Index in an Elasticsearch 7.x Cluster of CSS?
- How Do I Change the Number of Replicas for Elasticsearch Indexes in CSS?
- What Are the Impacts If an Elasticsearch Cluster of CSS Has Too Many Shards?
- How Do I Check the Number of Shards and Replicas in a CSS Cluster?
- What Does the Value i for node.roles Mean for Nodes in an Elasticsearch Cluster of CSS?
- How Do I Change the Maximum Number of Results Returned for Searches to an Index in an Elasticsearch Cluster of CSS?
- How Do I Update Index Lifecycle Policies for an Elasticsearch Cluster of CSS?
- How Do I Set Slow Query Log Thresholds for an Elasticsearch Cluster of CSS?
- How Do I Clear Elasticsearch Indexes in CSS?
- How Do I Clear Elasticsearch Cache in CSS?
- Why Does the Disk Usage Increase After the delete_by_query Command Was Executed to Delete Data in an Elasticsearch Cluster?
- Do CSS Elasticsearch Clusters Support script dotProduct?
-
Managing CSS Clusters
- How Do I Check the AZ Where a CSS Cluster Is Located?
- What Is the Relationship Between the Filebeat Version and Cluster Version in CSS?
- How Do I Obtain the Security Certificate of CSS?
- How Do I Convert the Format of a CER Security Certificate in CSS?
- Can I Modify the Security Group for Elasticsearch and OpenSearch Clusters in CSS?
- How Do I Set search.max_buckets for an Elasticsearch Cluster of CSS?
- Can I Modify the TLS Algorithm of an Elasticsearch or OpenSearch Cluster in CSS?
- How Do I Enable Audit Logs for an Elasticsearch or OpenSearch Cluster of CSS?
- Can I Stop a CSS Cluster?
- How Do I Query the Index Size on OBS After the Freezing of Indexes for a CSS Cluster?
- How Do I Check the List of Default Plugins for Elasticsearch and OpenSearch Clusters?
- CSS Cluster Backup and Restoration
- CSS Cluster Monitoring and O&M
- Troubleshooting
- Videos
Migrating Cluster Data
You can migrate data from one cluster to another. In certain scenarios, for example, if you cannot get sufficient capacity by changing the specifications of the current cluster, you can create a cluster of higher specifications and migrate all data of the current cluster to the new one. Alternatively, you can merge indexes in two clusters to one cluster to meet your business needs. CSS enables you to migrate cluster data by using the index backup and restoration function, specifically, by restoring the snapshot of a cluster to the target cluster.
In this section, assume that we need to migrate the data of cluster Es-1 to cluster Es-2. Cluster Es-2 runs a version later than that of cluster Es-1 and the number of nodes in cluster Es-2 is greater than half of that in cluster Es-1.
Prerequisites
- The source and target clusters are in the same region.
- The version of the target cluster is the same as or later than that of the source cluster.
- The number of nodes in the target cluster must be greater than half of the number of nodes in the source cluster.
Suggestions
- The number of nodes in the target cluster should be no less than the number of replicas in the source cluster.
- The CPU, memory, and disk configurations of the target cluster should be no less than those of the source cluster. This will minimize service loss after migration.
Migration Duration
The number of nodes or index shards in the source and destination clusters determines how long the data migration will take. Data migration consists of two phases: data backup and restoration. The backup duration is determined by the source cluster and the restoration duration is determined by the destination cluster. The formula for calculating the total migration duration is as follows:
- If the number of index shards is greater than the number of nodes:
- If the number of index shards is smaller than the number of nodes:
The migration duration estimated using the formula is the minimal duration possible (if each node transmits data at the fastest speed, 40 MB/s). The actual duration also depends on factors such as the network and resources condition.
Procedure
- On the Clusters page, click Es-1.
- In the navigation pane on the left, choose Cluster Snapshots. Enable the cluster snapshot and set basic configuration. For details, see Manually Creating a Snapshot.
- Click Create to manually create a snapshot. In the displayed dialog box, enter the snapshot name and click OK.
- In the snapshot list, locate the target snapshot and click Restore in the Operation column to restore data to cluster Es-2.
- In the text box next to Index, enter *, indicating that you want to restore data of all indexes in cluster Es-1.
- From the Cluster drop-down list, select Es-2.
Click OK.
- After restoration is complete, data in cluster Es-1 will be migrated to cluster Es-2.
Feedback
Was this page helpful?
Provide feedbackThank you very much for your feedback. We will continue working to improve the documentation.