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- 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
HTTP/HTTPS Flow Control
Context
You can run commands in Kibana to enable or disable HTTP/HTTPS flow control for your cluster. The command parameters are as follows.
Parameter |
Type |
Description |
---|---|---|
flowcontrol.http.enabled |
Boolean |
Whether to enable HTTP/HTTPS flow control. This function is disabled by default. Enabling it may affect node access performance. Value: true or false Default value: false |
flowcontrol.http.allow |
List<String> |
IP address whitelist. It can contain multiple IP addresses and masks, or an IP address list. Use commas (,) to separate multiple values. Example: xx.xx.xx.xx/24,xx.xx.xx.xx/24, or xx.xx.xx.xx.xx,xx.xx.xx. The default value is null. |
flowcontrol.http.deny |
List<String> |
IP address blacklist. Multiple IP addresses and masks or an IP address list can be configured. Use commas (,) to separate multiple IP addresses and masks. The default value is null. |
flowcontrol.http.concurrent |
Integer |
Maximum concurrent HTTP/HTTPS connections. Default value: Number of available cores on a node x 400 |
flowcontrol.http.newconnect |
Integer |
Maximum new connections that can be created for HTTP/HTTPS requests per second. Default value: Number of available cores on a node x 200 |
flowcontrol.http.warmup_period |
Integer |
Time required for the HTTP/HTTPS connection setup speed to reach the maximum. If flowcontrol.http.newconnect is set to 100 and flowcontrol.http.warmup_period is set to 5000ms, it indicates the system can set up 100 connections per second in 5 seconds. Value range: 0–10000 Unit: ms Default value: 0 |
Procedure
- Log in to the CSS management console.
- Choose Clusters in the navigation pane. On the Clusters page, locate the target cluster and click Access Kibana in the Operation column.
- In the navigation pane on the left, choose Dev Tools and run commands to enable or disable HTTP/HTTPS flow control.
- Enabling HTTP/HTTPS flow control for a node
PUT /_cluster/settings { "persistent": { "flowcontrol.http.enabled": true, "flowcontrol.http.allow": ["192.168.0.1/24", "192.168.2.1/24"], "flowcontrol.http.deny": "192.168.1.1/24", "flowcontrol.http.concurrent": 1000, "flowcontrol.http.newconnect": 1000, "flowcontrol.http.warmup_period": 0 } }
NOTE:
If all parameters are set to null, they will be restored to default values.
- Disabling HTTP/HTTPS flow control for a node
PUT /_cluster/settings { "persistent": { "flowcontrol.http.enabled": false } }
- Enabling HTTP/HTTPS flow control for a node
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