- 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?
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API Reference (Ankara Region)
- Before You Start
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Cluster Management
- Creating a Cluster
- Querying the Cluster List
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- Changing the Password of a Cluster
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- Querying Tags of a Specified Cluster
- Adding Tags to a Cluster
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- Scaling In a Cluster by Removing a Specific Node
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- Downloading a Security Certificate
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Snapshot Management
- (Not Recommended) Automatically Setting Basic Configurations of a Cluster Snapshot
- Modifying Basic Configurations of a Cluster Snapshot
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- Restoring a Snapshot
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- Querying the Automatic Snapshot Creation Policy
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User Guide (ME-Abu Dhabi Region)
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Migrating Data Between Huawei Cloud Elasticsearch Clusters Using Backup and Restoration
Data can be migrated between CSS Elasticsearch clusters by backing up and restoring cluster snapshots.
Scenario
Data migration between Huawei Cloud Elasticsearch clusters via backup and restoration is applicable solely to scenarios where both the source and destination clusters are CSS clusters and rely on OBS. Typical application scenarios include:
- Cross-region or cross-account migration: Migrate the data of an Elasticsearch cluster in another region or under another account to the current cluster.
- Cross-version migration: Migrate data from a self-built Elasticsearch cluster of an earlier version to a cluster of a later version.
- Cluster merge: Merge the index data of two Elasticsearch clusters.
Overview
Figure 1 shows the process of migrating data between Huawei Cloud Elasticsearch clusters using backup and restoration.
- Create a snapshot for the source Elasticsearch cluster and store the snapshot in an OBS bucket.
- Restore the cluster to a destination cluster using the snapshot store in the OBS bucket.
Advantages
- Easy operation and management: The cluster snapshot function on the CSS console allows for simple, easy-to-manage, and automatic data backup and restoration.
- Applicable to large-scale data migration: Snapshot backup is suitable for scenarios involving large amounts of data, especially when the data volume reaches GB, TB, or even PB levels.
- Cross-region and cross-account migration: With the cross-region replication function of OBS, data can be migrated across different regions and accounts.
- Controllable restoration process: During data restoration, you can restore specific indexes or all indexes and specify the cluster status to be restored.
- Controllable migration duration: The data migration rate can be configured based on the migration duration evaluation formula. Ideally, the data migration rate matches the file replication rate.
Impact on Performance
The essence of migrating data between clusters using backup and restoration is copying files at the data storage layer to back up data. This solution does not rely on any external Elasticsearch APIs. Hence it significantly reduces any impact on the performance of the source cluster. For clusters that are not particularly latency-sensitive, the performance impact of this method can be ignored.
Constraints
- The version of the destination cluster must not be earlier than that of the source cluster. For details, see Snapshot version compatibility.
- The number of nodes in the destination cluster must be greater than half of that in the source cluster, and cannot be less than the number of shard replicas in the source cluster.
- The CPU, memory, and disk capacities of the destination cluster must not be lower than those of the source cluster.
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:
Total duration (in seconds) = (800 GB ÷ 40 MB ÷ Number of nodes in the source cluster + 800 GB ÷ 40 MB ÷ Number of nodes in the destination cluster) x Number of indexes
- If the number of index shards is smaller than the number of nodes:
Total duration (in seconds) = (800 GB ÷ 40 MB ÷ Number of index shards in the source cluster + 800 GB ÷ 40 MB ÷ Number of index shards in the destination cluster) x Number of indexes
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.
Prerequisites
- The destination cluster (Es-2) and source cluster (Es-1) are available. You are advised to migrate a cluster during off-peak hours.
- Ensure that the destination cluster (Es-2) and source cluster (Es-1) are in the same region.
If the cluster is deployed across regions or accounts, refer to the Configuring Cross-Region Replication section to copy the OBS bucket that stores snapshots in the source cluster to the OBS bucket in the destination cluster. During the migration, restore the data in the destination cluster.
Procedure
- Log in to the Cloud Search Service management console.
- Choose Clusters > Elasticsearch. On the displayed page, click the source cluster name Es-1 to go to the basic information page.
- In the navigation pane, choose Cluster Snapshots, and set basic snapshot configurations.
Table 1 Basic configurations for a cluster snapshot Parameter
Description
OBS Bucket
Select an OBS bucket for storing cluster snapshots.
Backup Path
Storage path of the cluster snapshot in the OBS bucket. You can retain the default value.
IAM Agency
To store snapshot data to an OBS bucket, you must have the required OBS access permissions. Select an IAM agency to grant the current account the permission to access and use OBS.- If you are configuring an agency for the first time, click Automatically Create IAM Agency to create css-obs-agency.
- If there is an IAM agency automatically created earlier, you can click One-click authorization to have the OBS Administrator permissions deleted automatically, and have the following custom policies added automatically instead to implement more refined permissions control.
"obs:bucket:GetBucketLocation", "obs:object:GetObjectVersion", "obs:object:GetObject", "obs:object:DeleteObject", "obs:bucket:HeadBucket", "obs:bucket:GetBucketStoragePolicy", "obs:object:DeleteObjectVersion", "obs:bucket:ListBucketVersions", "obs:bucket:ListBucket", "obs:object:PutObject"
- When OBS buckets use SSE-KMS encryption, the IAM agency must be granted KMS permissions. You can click Automatically Create IAM Agency and One-click authorization to have the following custom policies created automatically.
"kms:cmk:create", "kms:dek:create", "kms:cmk:get", "kms:dek:decrypt", "kms:cmk:list"
- To use Automatically Create IAM Agency and One-click authorization, the following minimum permissions are required:
"iam:agencies:listAgencies", "iam:roles:listRoles", "iam:agencies:getAgency", "iam:agencies:createAgency", "iam:permissions:listRolesForAgency", "iam:permissions:grantRoleToAgency", "iam:permissions:listRolesForAgencyOnProject", "iam:permissions:revokeRoleFromAgency", "iam:roles:createRole"
- To use an IAM agency, the following minimum permissions are required:
"iam:agencies:listAgencies", "iam:agencies:getAgency", "iam:permissions:listRolesForAgencyOnProject", "iam:permissions:listRolesForAgency"
- Click Create. In the dialog box that is displayed, configure the parameters and click OK to manually create a snapshot.
Table 2 Snapshot creation parameters Parameter
Description
Snapshot Name
User-defined snapshot name. You can retain the default value.
Index
Indexes that you want to back up using snapshots. The index names cannot contain spaces or uppercase letters, and cannot contain "\<|>/?. Use commas (,) to separate different index names. If you do not specify this parameter, all indexes in the cluster are backed up by default. You can use the asterisk (*) to match multiple indexes. For example, if you enter index*, then the data of all indexes whose names are prefixed with index will be backed up.
NOTE:
Run the GET /_cat/indices command in Kibana to query the names of all indexes in the cluster.
Description
Snapshot description.
In the snapshot management list, if the snapshot status is Available, the snapshot has been created.
- In the snapshot management list, click Restore in the Operation column of the snapshot and configure restoration parameters to restore data to destination cluster Es-2.
Table 3 Snapshot restoration parameters Parameter
Description
Index
Enter the name of the index to be restored. If this parameter is not specified, all index data will be restored. You can use the asterisk (*) to match multiple indexes. For example, index* indicates that all indexes with the prefix index in snapshots are restored.
Rename Pattern
Index name matching rule. The Rename Pattern and Rename Replacement take effect only when they are configured at the same time. You can configure them to rename matched indexes in snapshots.
Rename Replacement
Rule for renaming an index name. The Rename Pattern and Rename Replacement take effect only when they are configured at the same time.
The default value restored_index_$1 indicates that restored_ is added in front of the names of all restored indexes.
Cluster
Select a destination cluster, for example, Es-2.
Select or deselect Overwrite same-name indexes in the destination cluster. By default, it is deselected. Data restoration using snapshots works by overwriting existing snapshot files. When there are same-name indexes in the destination cluster, you need to select this option in order to restore same-name, same-shard structure indexes. Indexes with a different shard structure cannot be restored. Exercise caution when performing this operation.
In the snapshot list, when the Task Status changes to Restoration succeeded, the data migration is complete.
- After the data migration is complete, check the data consistency between the destination Elasticsearch cluster Es-2 and source Elasticsearch cluster Es-1. For example, run the _cat/indices command in the source and destination clusters, separately, to check whether their indexes are consistent.
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