Relational Database Service
Relational Database Service
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Working with RDS for MySQL
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Instance Modifications
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Parameter Templates
- Creating a Parameter Template
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- Viewing Application Records of a Parameter Template
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Database Proxy (Read/Write Splitting)
- Introducing Read/Write Splitting
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- Enabling Read/Write Splitting
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- Configuring the Delay Threshold and Routing Policy
- Changing the Read/Write Splitting Address
- Changing the Read/Write Splitting Port
- Changing the Instance Class of a DB Proxy Instance
- Changing the Number of Proxy Nodes
- Upgrading the Kernel Version of Database Proxy
- Enabling or Disabling Access Control
- Restarting a Database Proxy
- Modifying Read/Write Splitting Parameters
- Disabling Read/Write Splitting
- Testing Read/Write Splitting Performance
- Database Management
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- Account and Network Security
- Metrics
- Interconnection with CTS
- Log Management
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- Managing Tags
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Working with RDS for MariaDB
- Suggestions on Using RDS for MariaDB
- Instance Connection
- Parameter Tuning
- Instance Lifecycle
- Instance Modifications
- Read Replicas
- Data Backups
- Data Restorations
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Parameter Templates
- Creating a Parameter Template
- Modifying RDS for MariaDB Instance Parameters
- Exporting a Parameter Template
- Importing a Parameter Template
- Comparing Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Resetting a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying a Parameter Template Description
- Deleting a Parameter Template
- Connection Management
- Database Management
- Account Management (Non-Administrator)
- Account and Network Security
- Metrics
- Interconnection with CTS
- Log Management
- Task Center
- Managing Tags
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Working with RDS for PostgreSQL
- Suggestions on Using RDS for PostgreSQL
- Database Migration
- Performance Tuning
- Instance Lifecycle
-
Instance Modifications
- Upgrading a Minor Version
- Changing a DB Instance Name
- Changing a DB Instance Description
- Changing the Replication Mode
- Changing the Failover Priority
- Changing a DB Instance Class
- Scaling Storage Space
- Changing the Maintenance Window
- Changing a DB Instance Type from Single to Primary/Standby
- Manually Switching Between Primary and Standby DB Instances
- Changing the AZ of a Standby DB Instance
- Read Replicas
- Data Backups
- Data Restorations
-
Parameter Templates
- Creating a Parameter Template
- Modifying Parameters of an RDS for PostgreSQL Instance
- Exporting a Parameter Template
- Comparing Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Resetting a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying a Parameter Template Description
- Deleting a Parameter Template
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- Major Version Upgrade
- Managing Tags
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Working with RDS for MySQL
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API Reference
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API v3 (Recommended)
- Querying Version Information About APIs
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DB Instance Management
- Creating a DB Instance
- Stopping an Instance
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- Changing the Description of a DB Instance
- Changing DB Instance Specifications
- Scaling Up Storage Space of a DB Instance
- Changing a Single DB Instance to Primary/Standby DB Instances
- Rebooting a DB Instance
- Deleting a DB Instance
- Querying DB Instances
- Binding and Unbinding an EIP
- Changing the Failover Priority
- Manually Switching Primary/Standby DB Instances
- Changing the Data Replication Mode of Primary/Standby DB Instances
- Configuring the Maintenance Window
- Database Security
- Backup and Restoration
- Log Information Queries
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Database and Account Management (MySQL)
- Creating a Database
- Querying Details About a Database
- Querying Databases
- Querying Authorized Databases of a Specified User
- Deleting a Database
- Creating a Database Account
- Querying Database Users
- Querying Authorized Users of a Specified Database
- Deleting a Database Account
- Configuring a Password for a Database Account
- Authorizing a Database Account
- Revoking Permissions of a Database Account
- Resetting the Password for User root
- Database and Account Management (PostgreSQL)
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Parameter Management
- Obtaining a Parameter Template List
- Creating a Parameter Template
- Modifying a Parameter Template
- Applying a Parameter Template
- Modifying Parameters of a Specified DB Instance
- Obtaining the Parameter Template of a Specified DB Instance
- Obtaining Parameters in a Specified Parameter Template
- Deleting a Parameter Template
- Recycling a DB Instance
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FAQs
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Database Connection
- What Should I Do If I Can't Connect to My RDS DB Instance?
- Can an External Server Access the RDS Database?
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- What Is the Maximum Number of Connections to an RDS DB Instance?
- How Can I Create and Connect to an ECS?
- What Should I Do If an ECS Cannot Connect to an RDS DB Instance Through a Private Network?
- What Should I Do If a Database Client Problem Causes a Connection Failure?
- What Should I Do If an RDS Database Problem Causes a Connection Failure?
- How Do My Applications Access an RDS DB Instance in a VPC?
- Do Applications Need to Support Reconnecting to the RDS DB Instance Automatically?
- Why Cannot I Ping My EIP After It Is Bound to a DB Instance?
- How Can I Obtain the IP Address of an Application?
- Can I Access an RDS DB Instance Over an Intranet Connection Across Regions?
- Is an SSL Connection to a DB Instance Interrupted After a Primary/Standby Switchover or Failover?
- Database Migration
- Database Permission
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- Client Installation
- Backup and Restoration
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- Capacity Expansion and Specification Change
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Help Center/
Relational Database Service/
User Guide/
Working with RDS for PostgreSQL/
Extension Management/
Installing and Uninstalling an Extension on the RDS Console
Installing and Uninstalling an Extension on the RDS Console
Updated on 2024-07-18 GMT+08:00
Scenarios
RDS allows you to install and uninstall extensions on the console.
RDS for PostgreSQL extensions only take effect on the databases you created the extensions for. To use an extension on databases, it has to be created separately for each database.
Prerequisites
Before installing or uninstalling extensions, ensure that there are databases in your instance.
Precautions
- plpgsql is a built-in extension and cannot be uninstalled.
- Logical replication plugins, such as decoderbufs and wal2json, can be used as-is. There is no installation required.
- Some extensions depend on the shared_preload_libraries parameter. They can be installed only after related libraries are loaded.
- pg_cron is only available to RDS for PostgreSQL 12 (12.11.0 and later), 13, and later versions. Before using this extension, change the value of cron.database_name to the name of the database this extension is used for (only one database is supported), and change the value of cron.use_background_workers to on.
- pltcl is not supported for RDS for PostgreSQL 13.2. To use this extension, upgrade your instance to the latest minor version.
- Installing or uninstalling some extensions will cause their dependent extensions and tables to be installed or uninstalled synchronously. For example, when you install or uninstall postgis, postgis_sfcgal will be installed or uninstalled at the same time.
- Some extensions cannot be upgraded after a minor version upgrade. To upgrade them, uninstall and reinstall them.
Modifying the shared_preload_libraries Parameter
Some extensions require corresponding parameter values to be loaded before the extensions can be installed.
You can modify the shared_preload_libraries parameter to load parameter values in batches or load each required parameter value independently before installing an extension.
- Log in to the management console.
- Click
in the upper left corner of the page and choose Databases > Relational Database Service.
- On the Instances page, click the instance name.
- In the navigation pane, choose Plugins.
- On the Plugins page, click
next to Loaded shared_preload_libraries parameter values to view the loaded parameter values.
- Click Modify Parameter Values.
- Select the parameter values to be loaded from the drop-down list box and click OK.
- In the displayed dialog box, click OK.
NOTE:
- The modified parameter values take effect only after the instance is rebooted. If your instance has read replicas, the parameter values for the read replicas are also modified. You also need to reboot the read replicas.
- To ensure security and O&M functions of RDS for PostgreSQL, the following parameter values are loaded by default and cannot be deleted:
- passwordcheck.so
- pg_stat_statements
- pg_sql_history
- pgaudit
- You can also load each parameter value independently before installing an extension.
Installing and Uninstalling an Extension
- Log in to the management console.
- Click
in the upper left corner of the page and choose Databases > Relational Database Service.
- On the Instances page, click the instance name.
- In the navigation pane, choose Plugins.
- In the Database drop-down list above the extension list, select the database where the extension is to be installed.
- Locate the extension to be installed and click Install in the Operation column.
- After a minor version upgrade, click Update next to the extension to be updated.
- To uninstall an extension, click Uninstall.
Parent topic: Extension Management
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