- What's New
- Function Overview
- Product Bulletin
- Service Overview
- Billing
- Getting Started
-
User Guide
- CSS Service Permission Management
-
Using Elasticsearch for Data Search
- Procedure for Using Elasticsearch
- Elasticsearch Cluster Planning Suggestions
- Creating an Elasticsearch Cluster
-
Accessing Elasticsearch Clusters
- Elasticsearch Cluster Access Methods
- Logging In to an Elasticsearch Cluster Using Kibana
- Logging In to an Elasticsearch Cluster Through Cerebro
- Accessing an Elasticsearch Cluster Using cURL Commands
- Accessing an Elasticsearch Cluster Using Java
- Accessing an Elasticsearch Cluster Using Python
- Accessing an Elasticsearch Cluster Through the MRS Hive Client
- Accessing an Elasticsearch Cluster Using Go
- Accessing an Elasticsearch Cluster Using LDAP
- Importing Data to an Elasticsearch Cluster
- Searching Data in an Elasticsearch Cluster
-
Enhancing Search Capabilities for Elasticsearch Clusters
- Search Enhancement Features for Elasticsearch Clusters
-
Configuring Vector Search for Elasticsearch Clusters
- About Vector Search
- Creating Vector Indexes in an Elasticsearch Cluster
- Using Vector Indexes for Data Search in an Elasticsearch Cluster
- Using a Vector Index with Nested Fields
- Optimizing the Write and Query Performance of Vector Search
- Managing the Vector Index Cache
- Client Code Sample for Vector Search (Python)
- Client Code Sample for Vector Search (Java)
- Configuring Storage-Compute Decoupling for an Elasticsearch Cluster
- Configuring Flow Control 2.0 for an Elasticsearch Cluster
- Configuring Flow Control 1.0 for an Elasticsearch Cluster
- Configuring Large Query Isolation for an Elasticsearch Cluster
- Configuring Enhanced Aggregation for an Elasticsearch Cluster
- Configuring Read/Write Splitting Between Two Elasticsearch Clusters
- Switching Between Hot and Cold Storage for an Elasticsearch Cluster
- Configuring an Index Recycle Bin for an Elasticsearch Cluster
- Configuring Networking for an Elasticsearch Cluster
- Backing up and Restoring the Data of an Elasticsearch Cluster
- Scaling an Elasticsearch Cluster
- Upgrading the Version of an Elasticsearch Cluster
-
Managing Elasticsearch Clusters
- Viewing Elasticsearch Cluster Information
- Creating Users for an Elasticsearch Cluster and Granting Cluster Access
- Setting Tags for an Elasticsearch Cluster
- Configuring Default Parameters in the .yml Configuration File of an Elasticsearch Cluster
- Binding an Elasticsearch Cluster to an Enterprise Project
- Changing the Node Specifications of an Elasticsearch Cluster
- Replacing Specified Nodes for an Elasticsearch Cluster
- Changing the Security Mode of an Elasticsearch Cluster
- Switching AZs for an Elasticsearch Cluster
- Configuring Custom Word Dictionaries for an Elasticsearch Cluster
- Switching Between Simplified and Traditional Chinese for Data Search in an Elasticsearch Cluster
- Restarting an Elasticsearch Cluster
- Deleting an Elasticsearch Cluster
- Managing Index Policies for an Elasticsearch Cluster
- Elasticsearch Cluster Monitoring and Log Management
- Viewing Elasticsearch Cluster Audit Logs
-
Using OpenSearch for Data Search
- Procedure for Using OpenSearch
- OpenSearch Cluster Planning Suggestions
- Creating an OpenSearch Cluster
- Accessing an OpenSearch Cluster
-
Importing Data to an OpenSearch Cluster
- Different Ways to Import Data to an OpenSearch Cluster
- Using In-house Built Logstash to Import Data to an OpenSearch Cluster
- Using Open Source OpenSearch APIs to Import Data to an OpenSearch Cluster
- Using CDM to Import Data to an OpenSearch Cluster
- Enhancing the Data Import Performance of OpenSearch Clusters
- Searching Data in an OpenSearch Cluster
-
Enhancing Search Capabilities for OpenSearch Clusters
- Search Enhancement Features for OpenSearch Clusters
-
Configuring Vector Search for OpenSearch Clusters
- About Vector Search
- Creating Vector Indexes in an OpenSearch Cluster
- Using Vector Indexes for Data Search in an OpenSearch Cluster
- Optimizing the Write and Query Performance of Vector Search
- Managing the Vector Index Cache
- Client Code Sample for Vector Search (Python)
- Client Code Sample for Vector Search (Java)
- Configuring Storage-Compute Decoupling for an OpenSearch Cluster
- Switching Between Hot and Cold Storage for an OpenSearch Cluster
- Configuring Networking for an OpenSearch Cluster
- Backing up and Restoring the Data of an OpenSearch Cluster
- Scaling an OpenSearch Cluster
- Upgrading the Version of an OpenSearch Cluster
-
Managing OpenSearch Clusters
- Viewing OpenSearch Cluster Information
- Creating Users for an OpenSearch Cluster and Granting Cluster Access
- Setting Tags for an OpenSearch Cluster
- Configuring Default Parameters in the .yml Configuration File of an OpenSearch Cluster
- Binding an OpenSearch Cluster to an Enterprise Project
- Changing the Node Specifications of an OpenSearch Cluster
- Replacing Specified Nodes for an OpenSearch Cluster
- Changing the Security Mode of an OpenSearch Cluster
- Switching AZs for an OpenSearch Cluster
- Configuring Custom Word Dictionaries for an OpenSearch Cluster
- Switching Between Simplified and Traditional Chinese for Data Search in an OpenSearch Cluster
- Restarting an OpenSearch Cluster
- Deleting an OpenSearch Cluster
- Managing Index Policies for OpenSearch Clusters
- OpenSearch Cluster Monitoring and Log Management
- Viewing OpenSearch Cluster Audit Logs
-
Using Logstash for Data Migration
- Procedure for Using Logstash
- Logstash Cluster Planning Suggestions
- Creating a Logstash Cluster
- Configuring Routes for a Logstash Cluster
- Configuring a Logstash Migration Task
- Scaling a Logstash Cluster
- Managing Logstash Clusters
- Logstash Cluster Monitoring and Log Management
- Viewing Logstash Cluster Audit Logs
- CSS Resource Monitoring
-
Best Practices
-
Elasticsearch Data Migration
- About Elasticsearch Cluster Migration Solutions
- Migrating Data Between Elasticsearch Clusters Using Huawei Cloud Logstash
- Migrating Data Between Huawei Cloud Elasticsearch Clusters Using Backup and Restoration
- Migrating Data from an On-premises Elasticsearch Cluster to Huawei Cloud Using the S3 Plugin
- Migrating Data from a Third-Party Elasticsearch Cluster to Huawei Cloud Using Backup and Restoration
- Migrating Data Between Huawei Cloud Elasticsearch Clusters Using the Read/Write Splitting Plugin
- Migrating Data Between Elasticsearch Clusters Using the Reindex API
- Migrating Data Between Elasticsearch Clusters Using ESM
- Migrating Kibana Saved Objects Between Elasticsearch Clusters
- Optimizing the Performance of Elasticsearch and OpenSearch Clusters
- Testing the Performance of CSS's Elasticsearch Vector Search
- Using Elasticsearch to Accelerate Query and Analysis for Relational Databases
- Using Elasticsearch, In-House Built Logstash, and Kibana to Build a Log Management Platform
- Ranking Search Results Using Elasticsearch Custom Rules
- Synchronizing Data from RDS for MySQL to Elasticsearch Through Logstash
-
Elasticsearch Data Migration
-
API Reference
- Before You Start
- API Overview
- Calling APIs
-
APIs
-
Cluster Management
- Creating a cluster
- Querying the Cluster List
- Querying Cluster Details
- Deleting a Cluster
- Changing the Cluster Billing Mode from Pay-per-use to Yearly/Monthly
- Renaming a Cluster
- Changing the Password of a Cluster
- Restarting a Cluster (Deprecated)
- 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
- Scaling In a Cluster by Removing a Specific Node
- Change the specifications of a specified node type.
- Scaling In Nodes of a Specific Type
- Downloading a Security Certificate
- Replacing a Node
- Configuring the Security Mode.
- Adding Independent Masters and Clients
- Upgrading a Cluster Kernel
- Obtaining the ID of the Target Image to Upgrade To
- Obtaining Details About a Cluster Upgrade or AZ Switchover
- Retrying a Failed Upgrade Task
- Changing the Security Group
- Changing the AZ of a Cluster Instance
- Creating a Cluster (V2)
- Restarting a Cluster (V2)
- Rolling Restart
- Word Dictionary Management
- Kibana Public Network Access
-
Logstash
- Creating a Configuration File
- Updating a Configuration File
- Starting Pipeline Data Migration
- Stopping Pipeline Data Migration
- Adding a Custom Template
- Performing a Connectivity Test
- Querying the Template List
- Querying the Configuration File List
- Querying the Pipeline List
- Querying Operation Records
- Querying the Configuration File Content
- Deleting a Configuration File
- Deleting a Custom Template
- Hot Starting Pipeline Data Migration
- Hot Stopping Pipeline Data Migration
- Updating Cluster Routes
- Obtaining a Cluster Route
- Uploading a Certificate
- Querying the Certificate List
- Querying Certificate Information
- Deleting a Certificate
- Delete a Configuration File (V2)
- Delete a Custom Template V2
- 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
- Enabling Automatic Snapshot Creation
- Disabling Automatic Snapshot Creation
- VPC Endpoint
- Parameter Configuration
- Intelligent O&M
- Load Balancing
-
Cluster Management
- Examples
- Permissions and Supported Actions
- Appendixes
- 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
-
Clusters
- Failed to Open Kibana
- How Can I Improve Filebeat Performance?
- How Do I Handle the Error "Connection reset by peer" That Occurs When Spring Boot Uses Elasticsearch?
- Why Does Cluster Creation Fail?
- What Do I Do If "Bulk Reject" Is Displayed in an Elasticsearch Cluster?
- What Do I Do If I Failed to Create an Index Pattern in an Elasticsearch Cluster?
- What Do I Do If a Message Indicating that the System Is Busy Is Displayed on the CSS Console?
- An Elasticsearch Cluster Reports An Error Message "unassigned shards all indices"
- A Cross-Domain Error Is Reported When I Connect the es-head Plugin to an Elasticsearch Cluster
- An Alarm Is Displayed When I Access Cerebro Through a Single-Node Cluster
- Why Does My ECS Fail to Connect to a Cluster?
-
Unavailable Clusters
- What Do I Do If My Cluster Status Is Unavailable?
- A Cluster Is Frozen and Unavailable
- What Can I Do If My Custer Is Unavailable Due to an X-pack Parameter Configuration?
- A Cluster Is Unavailable Due to Improper Security Group Policy
- A Cluster is Unavailable Due to Plugin Incompatibility
- A Cluster is Unavailable Due to Improper Shard Allocation
- A Cluster is Unavailable Due to Incompatible Data Types
- A Cluster is Unavailable Due to Heavy Load
- Data Import and Export
-
Functions
- Why Does Index Backup Fail?
- Why Is the Word Dictionary Function Not Working?
- What Do I Do If the Snapshot Repository Cannot Be Found?
- What Do I Do If a Cluster Is Always in the Snapshot Creation State?
- How Do I Back Up Large Amounts of Data Using Snapshots?
- How Can I Troubleshoot a Cluster With an Abnormally Heavy Load?
- Why "I/O Reactor STOPPED" Is Reported When I Use the Elasticsearch HLRC?
- The Peak Heap Memory of an Elasticsearch Cluster Remains High (Over 90%)
- Failed to Modify the Elasticsearch Cluster Specifications
- An Error Message Is Displayed When I Change the Read-Only Status of an Index
- A Node in an Elasticsearch Cluster Has No Shards Allocated
- Failed to Insert Data into a Cluster Index
- Error Message "maximum shards open" Is Displayed When Users Try to Create an Index
- Error Message "403 Forbidden" Is Displayed When I Delete All Indexes
- Error Message "Forbidden" Is Displayed When I Delete an Index Pattern
- Error Message "Trying to create too many scroll contexts" Is Displayed When the update-by-query Command Is Executed
- Failed to Create a Pattern in an Elasticsearch Cluster
- Ports
-
Clusters
- Videos
- Glossary
-
More Documents
-
User Guide (ME-Abu Dhabi Region)
- Service Overview
- Getting Started
- Permissions Management
- Creating and Accessing a Cluster
- Scaling In/Out a Cluster
- 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
- Vector Retrieval
- Working with Kibana
- Elasticsearch SQL
- Enhanced Features
- Monitoring
- Auditing
-
FAQs
-
General Consulting
- What Are Regions and AZs?
- How Does CSS Ensure Data and Service Security?
- Which CSS Metrics Should I Focus On?
- What Storage Options Does CSS Provide?
- What Is the Maximum Storage Capacity of CSS?
- How Can I Manage CSS?
- What Can the Disk Space of a CSS Cluster Be Used For?
- How Do I Check the Numbers of Shards and Replicas in a Cluster on the CSS Console?
- What Data Compression Algorithms Does CSS Use?
-
Functions
- Can Elasticsearch Data Be Migrated Between VPCs?
- How Do I Migrate a CSS Cluster Across Regions?
- How Do I Configure the Threshold for CSS Slow Query Logs?
- How Do I Update the CSS Lifecycle Policy?
- How Do I Set the Numbers of Index Copies to 0 in Batches?
- Why All New Index Shards Are Allocated to the Same Node?
- How Do I Query Snapshot Information?
- Can I Upgrade a Cluster from an Earlier Version to a Later Version?
- Can I Restore a Deleted Cluster?
- Can I Modify the TLS Algorithm of an Elasticsearch Cluster?
- How Do I Set the search.max_buckets Parameter for an ES Cluster?
- Does the Value i of node.roles Indicate an Injest Node?
- How Do I Create a Type Under an Index in an Elasticsearch 7.x Cluster?
- Clusters in Security Mode
-
Resource Usage and Change
- How Do I Clear Expired Data to Release Storage Space?
- How Do I Configure a Two-Replica CSS Cluster?
- How Do I Delete Index Data?
- Can I Change the Number of Shards to Four with Two Replicas When There Is One Shard Set in the JSON File?
- What Are the Impacts If an Elasticsearch Cluster Has Too Many Shards?
- How Do I Set the Default Maximum Number of Records Displayed on a Page for an Elasticsearch Cluster
- Why Does the Disk Usage Increase After the delete_by_query Command Was Executed to Delete Data?
- How Do I Clear the Cache of a CSS Cluster?
- The Average Memory Usage of an Elasticsearch Cluster Reaches 98%
- Components
- Kibana
- Clusters
- Ports
-
General Consulting
- Change History
-
API Reference (ME-Abu Dhabi Region)
- 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
- 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
- Parameter Configuration
- Permissions Policies and Supported Actions
- Common Parameters
- Change History
-
User Guide (Paris and Amsterdam Regions)
- Overview
- Getting Started
- Permissions Management
- Creating and Accessing a Cluster
- Scaling In/Out a Cluster
- 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
- Enhanced Features
- Monitoring
- Auditing
- Best Practices
-
FAQs
-
General Consulting
- What Are Regions and AZs?
- How Does CSS Ensure Data and Service Security?
- Which CSS Metrics Should I Focus On?
- What Storage Options Does CSS Provide?
- What Is the Maximum Storage Capacity of CSS?
- How Can I Manage CSS?
- What Can the Disk Space of a CSS Cluster Be Used For?
- How Do I Check the Numbers of Shards and Replicas in a Cluster on the CSS Console?
- What Data Compression Algorithms Does CSS Use?
-
Functions
- Can Elasticsearch Data Be Migrated Between VPCs?
- How Do I Migrate a CSS Cluster Across Regions?
- How Do I Configure the Threshold for CSS Slow Query Logs?
- How Do I Update the CSS Lifecycle Policy?
- How Do I Set the Numbers of Index Copies to 0 in Batches?
- Why All New Index Shards Are Allocated to the Same Node?
- How Do I Query Snapshot Information?
- Can I Upgrade a Cluster from an Earlier Version to a Later Version?
- Can I Restore a Deleted Cluster?
- Can I Modify the TLS Algorithm of an Elasticsearch Cluster?
- How Do I Set the search.max_buckets Parameter for an ES Cluster?
- Does the Value i of node.roles Indicate an Injest Node?
- How Do I Create a Type Under an Index in an Elasticsearch 7.x Cluster?
- Clusters in Security Mode
-
Resource Usage and Change
- How Do I Clear Expired Data to Release Storage Space?
- How Do I Configure a Two-Replica CSS Cluster?
- How Do I Delete Index Data?
- Can I Change the Number of Shards to Four with Two Replicas When There Is One Shard Set in the JSON File?
- What Are the Impacts If an Elasticsearch Cluster Has Too Many Shards?
- How Do I Set the Default Maximum Number of Records Displayed on a Page for an Elasticsearch Cluster
- Why Does the Disk Usage Increase After the delete_by_query Command Was Executed to Delete Data?
- How Do I Clear the Cache of a CSS Cluster?
- The Average Memory Usage of an Elasticsearch Cluster Reaches 98%
- Components
- Kibana
- Clusters
- Ports
-
General Consulting
- Change History
-
API Reference (Paris and Amsterdam Regions)
- 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
- 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
-
User Guide (Kuala Lumpur Region)
- Service Overview
- Getting Started
- Permissions Management
- Creating and Accessing a Cluster
- Scaling In/Out a Cluster
- 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
- Vector Retrieval
- Working with Kibana
- Elasticsearch SQL
- Enhanced Features
- Monitoring
- Auditing
-
FAQs
-
General Consulting
- What Are Regions and AZs?
- How Does CSS Ensure Data and Service Security?
- Which CSS Metrics Should I Focus On?
- What Storage Options Does CSS Provide?
- What Is the Maximum Storage Capacity of CSS?
- How Can I Manage CSS?
- What Can the Disk Space of a CSS Cluster Be Used For?
- How Do I Check the Numbers of Shards and Replicas in a Cluster on the CSS Console?
- What Data Compression Algorithms Does CSS Use?
-
Functions
- Can Elasticsearch Data Be Migrated Between VPCs?
- How Do I Migrate a CSS Cluster Across Regions?
- How Do I Configure the Threshold for CSS Slow Query Logs?
- How Do I Update the CSS Lifecycle Policy?
- How Do I Set the Numbers of Index Copies to 0 in Batches?
- Why All New Index Shards Are Allocated to the Same Node?
- How Do I Query Snapshot Information?
- Can I Upgrade a Cluster from an Earlier Version to a Later Version?
- Can I Restore a Deleted Cluster?
- Can I Modify the TLS Algorithm of an Elasticsearch Cluster?
- How Do I Set the search.max_buckets Parameter for an ES Cluster?
- Does the Value i of node.roles Indicate an Injest Node?
- How Do I Create a Type Under an Index in an Elasticsearch 7.x Cluster?
- Clusters in Security Mode
-
Resource Usage and Change
- How Do I Clear Expired Data to Release Storage Space?
- How Do I Configure a Two-Replica CSS Cluster?
- How Do I Delete Index Data?
- Can I Change the Number of Shards to Four with Two Replicas When There Is One Shard Set in the JSON File?
- What Are the Impacts If an Elasticsearch Cluster Has Too Many Shards?
- How Do I Set the Default Maximum Number of Records Displayed on a Page for an Elasticsearch Cluster
- Why Does the Disk Usage Increase After the delete_by_query Command Was Executed to Delete Data?
- How Do I Clear the Cache of a CSS Cluster?
- The Average Memory Usage of an Elasticsearch Cluster Reaches 98%
- Components
- Kibana
- Clusters
- Ports
-
General Consulting
- Change History
-
API Reference (Kuala Lumpur Region)
- 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
- 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
- Parameter Configuration
- Permissions Policies and Supported Actions
- Common Parameters
- Change History
-
User Guide (Ankara Region)
- Product Overview
- Getting Started
- Permissions Management
- Viewing the Cluster Runtime Status and Storage Capacity Status
- Cluster List Overview
- Deploying a Cross-AZ Cluster
-
Elasticsearch
- Managing Elasticsearch Clusters
- Accessing an Elasticsearch Cluster
- Index Backup and Restoration
- Changing the Elasticsearch Cluster Form
- Configuring an Elasticsearch Cluster
- Managing Logs
- Managing Plugins
- Kibana Platform
- Enhanced Cluster Features
- Intelligent O&M
- Importing Data to Elasticsearch
- Monitoring
- Auditing
-
FAQs
-
General Consulting
- What Are Regions and AZs?
- How Does CSS Ensure Data and Service Security?
- Which CSS Metrics Should I Focus On?
- What Storage Options Does CSS Provide?
- What Is the Maximum Storage Capacity of CSS?
- Which Tools Can I Adopt to Use Cloud Search Service?
- What Can the Disk Space of a CSS Cluster Be Used For?
- How Do I Check the Numbers of Shards and Replicas in a Cluster on the CSS Console?
- What Data Compression Algorithms Does CSS Use?
-
Functions
- Can Elasticsearch Data Be Migrated Between VPCs?
- How Do I Migrate a CSS Cluster Across Regions?
- How Do I Configure the Threshold for CSS Slow Query Logs?
- How Do I Update the CSS Lifecycle Policy?
- How Do I Set the Numbers of Index Copies to 0 in Batches?
- Why All New Index Shards Are Allocated to the Same Node?
- How Do I Query Snapshot Information?
- Can I Upgrade a Cluster from an Earlier Version to a Later Version?
- Can I Restore a Deleted Cluster?
- Can I Modify the TLS Algorithm of an Elasticsearch Cluster?
- How Do I Set the search.max_buckets Parameter for an Elasticsearch Cluster?
- Does the Value i of node.roles Indicate an Ingest Node?
- How Do I Create a Type Under an Index in an Elasticsearch 7.x Cluster?
- Clusters in Security Mode
-
Resource Usage and Change
- How Do I Clear Expired Data to Release Storage Space?
- How Do I Configure a Two-Replica CSS Cluster?
- How Do I Delete Index Data?
- Can I Change the Number of Shards to Four with Two Replicas When There Is One Shard Set in the JSON File?
- What Are the Impacts If an Elasticsearch Cluster Has Too Many Shards?
- How Do I Set the Default Maximum Number of Records Displayed on a Page for an Elasticsearch Cluster
- Why Does the Disk Usage Increase After the delete_by_query Command Was Executed to Delete Data?
- How Do I Clear the Cache of a CSS Cluster?
- The Average Memory Usage of an Elasticsearch Cluster Reaches 98%
- Component Usage
- Kibana Usage
- Cluster Access
- Port Usage
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General Consulting
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API Reference (Ankara Region)
- Before You Start
- API Overview
- Calling APIs
- Getting Started
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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
- Scaling In a Cluster by Removing a Specific Node
- Changing the Specifications of a Specified Node Type
- Scaling In Nodes of a Specific Type
- Downloading a Security Certificate
- Replacing a Node
- Changing the Security Mode
- Adding Dedicated Master and Client Nodes
- Changing the Security Group
- Creating a Cluster (V2)
- Restarting a Cluster (V2)
- Rolling Restart
- Kibana Public Network Access
- Log Management
- Public Network Access
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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
- Enabling Automatic Snapshot Creation
- Disabling Automatic Snapshot Creation
- Parameter Configuration
- Intelligent O&M
- Permissions Policies and Supported Actions
- Common Parameters
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User Guide (ME-Abu Dhabi Region)
- General Reference
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Migrating Data Between Elasticsearch Clusters Using the Reindex API
You can use the reindex API to migrate data between Elasticsearch clusters.
Scenario
- Cluster merging: The reindex API can be used to merge index data scattered across multiple Elasticsearch clusters into a single cluster for centralized data management and analysis.
- Cloud migration: Migrate an on-premises Elasticsearch service to the cloud to enjoy the benefits of cloud services, such as scalability, ease-of-maintenance, and cost-effectiveness.
- Changing the service provider: If you are using a third-party Elasticsearch service, and you want to switch to Huawei Cloud or another service provider for some reason (cost, performance, or other concerns), you can use the reindex API for data migration.
- Full migration: Migrate the full amount of index data between clusters. During the migration, all writes to the source cluster must be stopped, ensuring data consistency between the source and destination clusters.
- Incremental migration: For indexes that have a timestamp field, the reindex API can be used to execute an incremental migration based on this field. During the workload switchover phase, after the full migration is completed, you must stop all writes to the source cluster, and then use the reindex API to execute a quick incremental migration based on the latest update time. Then you can finally switch all services to the destination cluster.
- Reorganizing indexes: The reindex API can be used to restructure indexes while migrating them, including changing mappings, analyzers, and sharding.
Overview
Figure 1 shows how to migrate data between Elasticsearch clusters using the reindex API.
- Configure the reindex remote access whitelist in the destination cluster to connect the source and destination clusters.
- Use the reindex API to migrate indexes from the source cluster to the destination cluster.
Advantages
- Easy to use: As a built-in function of Elasticsearch, the reindex API offers an easy way to migrate data without complex settings or additional tools.
- Flexible data processing: Indexes can be restructured or rebuilt during migration, such as changing mappings, analyzers, and sharding.
- Performance control: During the migration, you can tune the parameters of the scroll API to control the data migration speed for optimal cluster performance.
Impact on Performance
Using the reindex API for data migration between clusters relies on the scroll API. The scroll API can efficiently retrieve index data from the source cluster and synchronize the data to the destination cluster in batches. This process may impact the performance of the source cluster. The specific impact depends on how fast data is retrieved from the source cluster, and the data retrieval speed depends on the size and slice settings of the scroll API. For details, see the Reindex API document.
Reindex tasks are asynchronous in Elasticsearch clusters, so their impact on the performance of the source cluster is manageable when task concurrency is low. If the source cluster has a high resource usage, it is advisable to tune the size parameter of the scroll API to slow down the data retrieval speed or perform the migration during off-peak hours, reducing impact on the performance of the source cluster.
Constraints
- During cluster migration, do not add, delete, or modify the index data of the source cluster. Otherwise, the data in the source cluster will be inconsistent with that in the destination cluster after the migration.
- The source and destination clusters must use the same version.
Prerequisites
- The source and destination Elasticsearch clusters are available.
- The network between the clusters is connected.
- If the source and destination clusters are in different VPCs, establish a VPC peering connection between them. For details, see VPC Peering Connection Overview.
- To migrate an in-house built Elasticsearch cluster to Huawei Cloud, you can configure public network access for this cluster.
- To migrate a third-party Elasticsearch cluster to Huawei Cloud, you need to establish a VPN or Direct Connect connection between the third party's internal data center and Huawei Cloud.
- Ensure that _source has been enabled for indexes in the cluster.
By default, _source is enabled. You can run the GET {index}/_search command to check whether it is enabled. If the returned index information contains _source, it is enabled.
Obtaining Information About the Source Elasticsearch Cluster
Before data migration, obtain necessary information about the source cluster for configuring a migration task.
Cluster Type |
Required Information |
How to Obtain |
---|---|---|
Huawei Cloud Elasticsearch cluster |
|
|
In-house built Elasticsearch cluster |
|
Contact the service administrator to obtain the information. |
Third-party Elasticsearch cluster |
|
Contact the service administrator to obtain the information. |
The method of obtaining the cluster information varies depending on the source cluster. This section describes how to obtain information about a Huawei Cloud Elasticsearch cluster.
- Log in to the CSS management console.
- In the navigation pane on the left, choose Clusters > Elasticsearch.
- In the Elasticsearch cluster list, obtain the cluster name and address.
Figure 2 Obtaining cluster information
- Click Access Kibana in the Operation column to log in to the Kibana console.
- Click Dev Tools in the navigation tree on the left.
- Run the following command to query the index structure of the source cluster:
GET {index_name}
index_name indicates the name of the index to be migrated.
Configuring the Reindex Remote Access Whitelist
- Log in to the CSS management console.
- In the navigation pane on the left, choose Clusters > Elasticsearch.
- In the Elasticsearch cluster list, click the destination cluster. The cluster information page is displayed.
- In the navigation pane on the left, click Parameter Configurations. Then click Edit, and expand Reindexing.
- Set reindex.remote.whitelist.
- Value: Enter the address of the source cluster obtained in Obtaining Information About the Source Elasticsearch Cluster.
If the source Elasticsearch cluster uses HTTPS, expand Customize, and add a custom parameter to ignore SSL authentication.
- Parameter: reindex.ssl.verification_mode
- Value: none
- Click Submit. In the displayed confirmation dialog box, confirm the parameter settings, select I understand that the modification will take effect after the cluster is restarted, then click OK.
- Return to the Elasticsearch cluster list, and locate the destination cluster. Choose More > Restart in the Operation column to restart the cluster and make the change take effect.
Migrating Indexes Using the Reindex API
- In the destination cluster, create an index structure identical to that in the source cluster.
- Log in to the CSS management console.
- In the navigation pane on the left, choose Clusters > Elasticsearch.
- In the Elasticsearch cluster list, locate the destination cluster, and click Access Kibana in the Operation column to log in to the Kibana console.
- Click Dev Tools in the navigation tree on the left.
- Run the following command to create an index structure that is identical to that in the source cluster:
PUT {index_name} { Index structure of the source cluster }
index_name indicates the index name after the migration. For the index structure of the source cluster, see Obtaining Information About the Source Elasticsearch Cluster.
- Run the following command to migrate data using the reindex API:
- Full migration: Migrate the full amount of index data in the source cluster to the destination cluster.
On the Kibana console of the destination cluster, run the following command:
POST _reindex?wait_for_completion=false { "source": { "remote": { "host": "http://xx.xx.xx.xx:9200", //Address of the source cluster. If the source cluster uses HTTPS, use https://xx.xx.xx.xx:9200. "username": "xxx", //Username for accessing the source cluster. It is needed for a security-mode cluster only. "password": "******" //Password for accessing the source cluster. It is needed for a security-mode cluster only. }, "index": "index_name", //Index name in the source cluster "size": 3000 }, "dest": { "index": "index_name" //Index name in the destination cluster } }
- Incremental migration: Migrate new/changed index data from the source cluster to the destination cluster based on timestamps. This method can also be used to migrate an oversized index one chunk at a time.
On the Kibana console of the destination cluster, run the following command:
POST _reindex?wait_for_completion=false { "source": { "remote": { "host": "http://xx.xx.xx.xx:9200", //Address of the source cluster. If the source cluster uses HTTPS, use https://xx.xx.xx.xx:9200. "username": "xxx", //Username for accessing the source cluster. It is needed for a security-mode cluster only. "password": "******" //Password for accessing the source cluster. It is needed for a security-mode cluster only. }, "query": { "range" : { "timestamps" : { //The time field "gte" : "xxx", //Start time of the incremental data. "lte" : "xxx" //End time of the incremental data. } } }, "index": "index_name", //Index name in the source cluster "size": 3000 }, "dest": { "index": "index_name" //Index name in the destination cluster } }
- Index reorganization in the same cluster: Use the reindex API to restructure indexes during migration.
On the Kibana console of the destination cluster, run the following command:
POST _reindex?wait_for_completion=false { "source": { "index": "index_name", //Index name in the source cluster "size": 3000 }, "dest": { "index": "index_name" //Index name in the destination cluster } }
- Full migration: Migrate the full amount of index data in the source cluster to the destination cluster.
FAQ: What Do I Do If It Is Slow to Migrate an Oversized Index?
It may take a long time to migrate an oversize index. To speed up the migration, use the following methods:
- The reindex API relies on the scroll API to read data from the source cluster and write data into the destination cluster. You can set the size and slice parameters of the scroll API to increase migration concurrency and speed. For details, see Reindex API.
- Before the migration, set the number of replicas to 0 for the destination index. After the migration is completed, change the number of replicas to the original value.
- Use snapshots to migrate large amounts of data. See Migrating Data Between Huawei Cloud Elasticsearch Clusters Using Backup and Restoration, Migrating Data from an On-premises Elasticsearch Cluster to Huawei Cloud Using the S3 Plugin, and Migrating Data from a Third-Party Elasticsearch Cluster to Huawei Cloud Using Backup and Restoration for examples.
- If the index has a time field, use incremental migration to migrate the index one chunk at a time.
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