- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Console Guide
- Console Overview
- Bucket Management
- Bucket Overview
- Creating a Bucket
- Deleting a Bucket
- Querying Buckets
- Emptying a Bucket
- Setting Access Permission
- Setting Bucket Encryption
- Setting Hotlink Protection
- Setting Origin-Pull
- Setting CORS
- Setting Versioning
- Setting Up a Static Website
- Setting Lifecycle
- Setting Logging
- Accessing Bucket List Using Sub-Account
- Adding a Bucket Policy
- Setting Log Analysis
- Setting INTELLIGENT TIERING
- Setting Inventory
- Domain Name Management
- Setting Bucket Tags
- Setting Cross-Bucket Replication
- Enabling Global Acceleration
- Object Management
- Uploading Objects
- Downloading Objects
- Copying Objects
- Viewing Object Information
- Searching for Objects
- Sorting and Filtering Objects
- Direct Upload to ARCHIVE
- Modifying Storage Classes
- Deleting Incomplete Multipart Uploads
- Setting Object Access Permission
- Setting Object Encryption
- Custom Headers
- Deleting Objects
- Restoring Archived Objects
- Folder Management
- Data Extraction
- Setting Object Tags
- Exporting Object URLs
- Restoring a Historical Object Version
- Batch Operation
- Monitoring Reports
- Data Processing
- Data Processing Workflow
- Application Integration
- User Tools
- Tool Overview
- Installation and Configuration of Environment
- COSBrowser
- COSCLI (Beta)
- COSCLI Overview
- Download and Installation Configuration
- Common Options
- Common Commands
- Generating and Modifying Configuration Files - config
- Creating a Bucket - mb
- Deleting a Bucket - rb
- Tagging Bucket - bucket-tagging
- Querying Bucket/Object List - ls
- Obtaining Statistics on Different Types of Objects - du
- Uploading/Downloading/Copying Objects - cp
- Syncing Upload/Download/Copy - sync
- Deleting Objects - rm
- Getting File Hash Value - hash
- Listing Incomplete Multipart Uploads - lsparts
- Clearing Incomplete Multipart Uploads - abort
- Restoring Archived Objects - restore
- Getting Pre-signed URL - signurl
- FAQs
- COSCMD
- COS Migration
- FTP Server
- COSFS
- Hadoop
- COSDistCp
- Hadoop-cos-DistChecker
- HDFS TO COS
- Diagnostic Tool
- GooseFS
- Overview
- Update Log
- Getting Started
- Key Features
- Deployment Guide
- OPS Guide
- Data Security
- GooseFS on TKE Cloud Native Practices
- Quick Start
- Using GooseFS as Fluid Dataset Runtime
- Multi-Master Node Deployment
- Multiple-Master Affinity Scheduling
- Accelerating Data in COS
- Global Client Deployment
- Using Parameters for Encryption
- Manual Scaling
- Data Caching and Metadata Caching
- Data Affinity Scheduling
- Data Scheduling Based on Tolerations and Taints
- Data Preloading
- Deploying Multiple Datasets on the Same Cluster via Placement
- Best Practice
- Overview
- Access Control and Permission Management
- ACL Practices
- Cloud Access Management Practices
- Granting Sub-accounts Access to COS
- Cases of Permission Setting
- Working with COS API Authorization Policies
- Security Guidelines for Using Temporary Credentials for Direct Upload from Frontend to COS
- Generating and Using Temporary Keys
- Grant Sub-account Permissions to Pull Tag List
- Descriptions and Use Cases of Condition Keys
- Granting Sub-account Under One Root Account Permission to Manipulate Buckets Under Another Root Account
- Performance Optimization
- Data Migration
- Accessing COS Using the AWS S3 SDK
- Data Disaster Recovery and Backup
- Direct Data Upload
- Domain Name Management Practice
- Data Security
- Data Verification
- Big Data Practice
- Custom Processing
- Using COS in the Third-party Applications
- Using APIs to Zip Files
- Using APIs to Merge Files
- Developer Guide
- Creating Request
- Bucket
- Object
- Data Management
- Data Disaster Recovery
- Data Security
- Cloud Access Management
- Batch Operation
- Global Acceleration
- Data Processing
- Metadata Acceleration
- Data Workflow
- Monitoring and Alarms
- Troubleshooting
- API Documentation
- Introduction
- Common Request Headers
- Common Response Headers
- Error Codes
- Request Signature
- Operation List
- Service APIs
- Bucket APIs
- Basic Operations
- Access Control List (acl)
- Cross-Origin Resource Sharing (cors)
- Lifecycle
- Bucket Policy (policy)
- Hotlink Protection (referer)
- Tag (tagging)
- Static Website (website)
- Intelligent Tiering
- Bucket inventory(inventory)
- Versioning
- Cross-Bucket Replication（replication）
- Log Management(logging)
- Global Acceleration (Accelerate)
- Bucket Encryption (encryption)
- Custom Domain Name (Domain)
- Object APIs
- Batch Operation APIs
- Data Processing APIs
- Image Processing
- Basic Image Processing
- Scaling
- Cropping
- Rotation
- Converting Format
- Quality Change
- Gaussian Blurring
- Adjusting Brightness
- Adjusting Contrast
- Sharpening
- Grayscale Image
- Image Watermarking
- Text Watermarking
- Obtaining Basic Image Information
- Obtaining Image EXIF
- Obtaining Image’s Average Hue
- Removing Image Metadata
- Quick Thumbnail Template
- Limiting Output Image Size
- Pipeline Operators
- Image Advanced Compression
- Persistent Image Processing
- Image Compression
- Basic Image Processing
- Media Processing
- Image Processing
- Data Workflow APIs
- SDK Documentation
- SDK Overview
- Preparations
- Android SDK
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Restoring Archived Objects
- Querying Object Metadata
- Generating Pre-Signed URLs
- Configuring Preflight Requests for Cross-origin Access
- Server-Side Encryption
- Single-Connection Bandwidth Limit
- Extracting Object Content
- Getting Started
- Quick Experience
- Bucket Operations
- Remote Disaster Recovery
- Data Management
- Cloud Access Management
- Data Verification
- Image Processing
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Object Operations
- C SDK
- C++ SDK
- .NET(C#) SDK
- Getting Started
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Restoring Archived Objects
- Querying Object Metadata
- Object Access URL
- Getting Pre-Signed URLs
- Configuring Preflight Requests for Cross-Origin Access
- Server-Side Encryption
- Single-URL Speed Limits
- Extracting Object Content
- Cross-Region Disaster Recovery
- Data Management
- Cloud Access Management
- Image Processing
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Backward Compatibility
- Go SDK
- iOS SDK
- Getting Started
- Quick Experience
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Listing Objects
- Copying and Moving Objects
- Extracting Object Content
- Checking Whether an Object Exists
- Deleting Objects
- Restoring Archived Objects
- Querying Object Metadata
- Server-Side Encryption
- Object Access URL
- Generating Pre-Signed URL
- Configuring CORS Preflight Requests
- Cross-region Disaster Recovery
- Data Management
- Cloud Access Management
- Image Processing
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Java SDK
- Getting Started
- FAQs
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Querying Object Metadata
- Modifying Object Metadata
- Object Access URL
- Getting Pre-Signed URLs
- Restoring Archived Objects
- Server-Side Encryption
- Client-Side Encryption
- Single-URL Speed Limits
- Extracting Object Content
- Data Management
- Cross-Region Disaster Recovery
- Cloud Access Management
- Image Processing
- Media Processing
- Troubleshooting
- Setting Access Domain Names (CDN/Global Acceleration)
- JavaScript SDK
- Node.js SDK
- PHP SDK
- Python SDK
- Getting Started
- Bucket Operations
- Bucket Management
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Querying Object Metadata
- Modifying Object Metadata
- Object Access URL
- Getting Pre-Signed URLs
- Restoring Archived Objects
- Extracting Object Content
- Server-Side Encryption
- Client-Side Encryption
- Single-URL Speed Limits
- Data Management
- Cloud Access Management
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Image Processing
- Mini Program SDK
- Error Codes
- FAQs
- COS Service Level Agreement
- Glossary
- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Console Guide
- Console Overview
- Bucket Management
- Bucket Overview
- Creating a Bucket
- Deleting a Bucket
- Querying Buckets
- Emptying a Bucket
- Setting Access Permission
- Setting Bucket Encryption
- Setting Hotlink Protection
- Setting Origin-Pull
- Setting CORS
- Setting Versioning
- Setting Up a Static Website
- Setting Lifecycle
- Setting Logging
- Accessing Bucket List Using Sub-Account
- Adding a Bucket Policy
- Setting Log Analysis
- Setting INTELLIGENT TIERING
- Setting Inventory
- Domain Name Management
- Setting Bucket Tags
- Setting Cross-Bucket Replication
- Enabling Global Acceleration
- Object Management
- Uploading Objects
- Downloading Objects
- Copying Objects
- Viewing Object Information
- Searching for Objects
- Sorting and Filtering Objects
- Direct Upload to ARCHIVE
- Modifying Storage Classes
- Deleting Incomplete Multipart Uploads
- Setting Object Access Permission
- Setting Object Encryption
- Custom Headers
- Deleting Objects
- Restoring Archived Objects
- Folder Management
- Data Extraction
- Setting Object Tags
- Exporting Object URLs
- Restoring a Historical Object Version
- Batch Operation
- Monitoring Reports
- Data Processing
- Data Processing Workflow
- Application Integration
- User Tools
- Tool Overview
- Installation and Configuration of Environment
- COSBrowser
- COSCLI (Beta)
- COSCLI Overview
- Download and Installation Configuration
- Common Options
- Common Commands
- Generating and Modifying Configuration Files - config
- Creating a Bucket - mb
- Deleting a Bucket - rb
- Tagging Bucket - bucket-tagging
- Querying Bucket/Object List - ls
- Obtaining Statistics on Different Types of Objects - du
- Uploading/Downloading/Copying Objects - cp
- Syncing Upload/Download/Copy - sync
- Deleting Objects - rm
- Getting File Hash Value - hash
- Listing Incomplete Multipart Uploads - lsparts
- Clearing Incomplete Multipart Uploads - abort
- Restoring Archived Objects - restore
- Getting Pre-signed URL - signurl
- FAQs
- COSCMD
- COS Migration
- FTP Server
- COSFS
- Hadoop
- COSDistCp
- Hadoop-cos-DistChecker
- HDFS TO COS
- Diagnostic Tool
- GooseFS
- Overview
- Update Log
- Getting Started
- Key Features
- Deployment Guide
- OPS Guide
- Data Security
- GooseFS on TKE Cloud Native Practices
- Quick Start
- Using GooseFS as Fluid Dataset Runtime
- Multi-Master Node Deployment
- Multiple-Master Affinity Scheduling
- Accelerating Data in COS
- Global Client Deployment
- Using Parameters for Encryption
- Manual Scaling
- Data Caching and Metadata Caching
- Data Affinity Scheduling
- Data Scheduling Based on Tolerations and Taints
- Data Preloading
- Deploying Multiple Datasets on the Same Cluster via Placement
- Best Practice
- Overview
- Access Control and Permission Management
- ACL Practices
- Cloud Access Management Practices
- Granting Sub-accounts Access to COS
- Cases of Permission Setting
- Working with COS API Authorization Policies
- Security Guidelines for Using Temporary Credentials for Direct Upload from Frontend to COS
- Generating and Using Temporary Keys
- Grant Sub-account Permissions to Pull Tag List
- Descriptions and Use Cases of Condition Keys
- Granting Sub-account Under One Root Account Permission to Manipulate Buckets Under Another Root Account
- Performance Optimization
- Data Migration
- Accessing COS Using the AWS S3 SDK
- Data Disaster Recovery and Backup
- Direct Data Upload
- Domain Name Management Practice
- Data Security
- Data Verification
- Big Data Practice
- Custom Processing
- Using COS in the Third-party Applications
- Using APIs to Zip Files
- Using APIs to Merge Files
- Developer Guide
- Creating Request
- Bucket
- Object
- Data Management
- Data Disaster Recovery
- Data Security
- Cloud Access Management
- Batch Operation
- Global Acceleration
- Data Processing
- Metadata Acceleration
- Data Workflow
- Monitoring and Alarms
- Troubleshooting
- API Documentation
- Introduction
- Common Request Headers
- Common Response Headers
- Error Codes
- Request Signature
- Operation List
- Service APIs
- Bucket APIs
- Basic Operations
- Access Control List (acl)
- Cross-Origin Resource Sharing (cors)
- Lifecycle
- Bucket Policy (policy)
- Hotlink Protection (referer)
- Tag (tagging)
- Static Website (website)
- Intelligent Tiering
- Bucket inventory(inventory)
- Versioning
- Cross-Bucket Replication（replication）
- Log Management(logging)
- Global Acceleration (Accelerate)
- Bucket Encryption (encryption)
- Custom Domain Name (Domain)
- Object APIs
- Batch Operation APIs
- Data Processing APIs
- Image Processing
- Basic Image Processing
- Scaling
- Cropping
- Rotation
- Converting Format
- Quality Change
- Gaussian Blurring
- Adjusting Brightness
- Adjusting Contrast
- Sharpening
- Grayscale Image
- Image Watermarking
- Text Watermarking
- Obtaining Basic Image Information
- Obtaining Image EXIF
- Obtaining Image’s Average Hue
- Removing Image Metadata
- Quick Thumbnail Template
- Limiting Output Image Size
- Pipeline Operators
- Image Advanced Compression
- Persistent Image Processing
- Image Compression
- Basic Image Processing
- Media Processing
- Image Processing
- Data Workflow APIs
- SDK Documentation
- SDK Overview
- Preparations
- Android SDK
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Restoring Archived Objects
- Querying Object Metadata
- Generating Pre-Signed URLs
- Configuring Preflight Requests for Cross-origin Access
- Server-Side Encryption
- Single-Connection Bandwidth Limit
- Extracting Object Content
- Getting Started
- Quick Experience
- Bucket Operations
- Remote Disaster Recovery
- Data Management
- Cloud Access Management
- Data Verification
- Image Processing
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Object Operations
- C SDK
- C++ SDK
- .NET(C#) SDK
- Getting Started
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Restoring Archived Objects
- Querying Object Metadata
- Object Access URL
- Getting Pre-Signed URLs
- Configuring Preflight Requests for Cross-Origin Access
- Server-Side Encryption
- Single-URL Speed Limits
- Extracting Object Content
- Cross-Region Disaster Recovery
- Data Management
- Cloud Access Management
- Image Processing
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Backward Compatibility
- Go SDK
- iOS SDK
- Getting Started
- Quick Experience
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Listing Objects
- Copying and Moving Objects
- Extracting Object Content
- Checking Whether an Object Exists
- Deleting Objects
- Restoring Archived Objects
- Querying Object Metadata
- Server-Side Encryption
- Object Access URL
- Generating Pre-Signed URL
- Configuring CORS Preflight Requests
- Cross-region Disaster Recovery
- Data Management
- Cloud Access Management
- Image Processing
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Java SDK
- Getting Started
- FAQs
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Querying Object Metadata
- Modifying Object Metadata
- Object Access URL
- Getting Pre-Signed URLs
- Restoring Archived Objects
- Server-Side Encryption
- Client-Side Encryption
- Single-URL Speed Limits
- Extracting Object Content
- Data Management
- Cross-Region Disaster Recovery
- Cloud Access Management
- Image Processing
- Media Processing
- Troubleshooting
- Setting Access Domain Names (CDN/Global Acceleration)
- JavaScript SDK
- Node.js SDK
- PHP SDK
- Python SDK
- Getting Started
- Bucket Operations
- Bucket Management
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Querying Object Metadata
- Modifying Object Metadata
- Object Access URL
- Getting Pre-Signed URLs
- Restoring Archived Objects
- Extracting Object Content
- Server-Side Encryption
- Client-Side Encryption
- Single-URL Speed Limits
- Data Management
- Cloud Access Management
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Image Processing
- Mini Program SDK
- Error Codes
- FAQs
- COS Service Level Agreement
- Glossary
Symptom
When I access a file, "404 NoSuchKey" is returned, indicating the file cannot be found or displayed.
Possible Causes
- The file URL is incorrect.
- The case of the URL is incorrect.
Troubleshooting Procedure
Check whether the URL and the case of the accessed file are correct.
- If yes, contact us.
- If not, modify the file URL. For the naming conventions of objects, see Object Overview.
Yes
No
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