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5-5 - Unable to get env variable

 Github  来源:Dubbo 浏览 5 扫码 分享 2024-11-19 09:32:02
  • 5-5 - Unable to get env variable
    • Possible Causes
    • Troubleshooting and Resolution Steps
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    5-5 - Unable to get env variable

    5-5 - Unable to get env variable

    Possible Causes

    Environment variables cannot be retrieved.

    Troubleshooting and Resolution Steps

    Check the variable name prompted to see if it is configured and can be properly read and loaded.

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    Last modified September 30, 2024: Update & Translate Overview Docs (#3040) (d37ebceaea7)

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    • Apache Dubbo 3.3 教程
    • Apache Dubbo 3.3 Documentation
    • Apache Dubbo 3.0 教程（202212）
    • Apache Dubbo 3.0 教程（202109）
    • Apache Dubbo 3.0 教程（202106）
    • Apache Dubbo 2.7 开发指南
    • Apache Dubbo 2.7 用户文档
    • Apache Dubbo开发者指南(201807)
    • [中文]Apache Dubbo用户文档(201807)
    • Introduction
      • Concepts and Architecture
      • Relationship with gRPC, Spring Cloud, Istio
      • Core Advantages
        • Quick and Easy to Use
        • Ultra-high performance
        • Service Governance
        • Production Environment Verification
      • Features
        • Microservices Development
        • Service Discovery
        • Load Balancing
        • Traffic Control
          • Condition Routing
          • Introduction to Routing Mechanism
          • Tag Routing
          • Script Routing
          • Dynamic Configuration
          • Rate Limiting & Circuit Breaking
          • Mesh Routing
        • Communication Protocols
        • Extension Adaptation
        • Observability Service
        • Authentication and Authorization
        • Service Mesh
        • Microservices Ecosystem
        • More Advanced Features
    • User Manual
      • Java SDK
        • Version Information
        • Quick Start
          • Create a Dubbo application based on Spring Boot
        • User Guide
          • Quickly Create Applications
            • Spring Boot Starter
            • Pure API Development Model
          • Communication Protocol
            • Choosing RPC Protocols
            • dubbo Protocol
            • triple protocol
            • Java Interface Method
            • Protobuf (IDL) Method
            • Streaming Communication
            • Publish/Call Standard gRPC Service
            • REST Protocol
          • Observability Service
            • Console
            • Prometheus
            • Grafana
            • Log Management
            • End-to-End Tracing
            • Link Tracing
            • OpenTelemetry
            • Zipkin
            • Skywalking
          • Service Discovery
            • Load Balancing
            • Service Discovery
            • Using Zookeeper as a Registry Center
            • Using Nacos as Registration Center
            • Using Kubernetes Registry
          • Package and Deploy
            • Traditional Registration Center
            • Kubernetes
            • Service Mesh
          • Traffic Control
            • Sample Application Architecture
            • Adjust Timeout
            • Service Retry
            • Access Log
            • Same Region Priority
            • Conditional Traffic Routing
            • Environment Isolation
            • Parameter Routing
            • Weight Ratio
            • Service Downgrading
            • Directing Traffic to a Fixed Machine
          • Custom Extensions
            • How to customize extensions
            • Filter
            • Protocol
            • Registry
            • Router
          • RPC Framework
            • Server and Client
            • Thread Model
            • Asynchronous Call
            • Filter Interceptor
            • Timeout Duration
            • Version and Group
            • Passing Additional Parameters
            • Cluster Fault Tolerance (Retry)
            • Generic Call
            • More features
            • Generic Implementation
            • Echo Testing
            • Dynamically Specify IP Call at Runtime
            • Direct Connection Provider
            • Event Notifications Triggered by Calls
            • Server Callback to Client
            • Service Downgrade
            • Local Stub
            • Local Call
            • Concurrency Control
            • Connection Control
            • Host Configuration
            • Result Cache Invocation
            • Route Status Collection
            • Service Reference Configuration Object Cache
            • Parameter Validation
            • Reactive Programming
          • Distributed Transactions
            • Use Seata to enable distributed transactions in Dubbo
          • HTTP Gateway Access
            • Basic Architecture
            • dubbo protocol
            • triple protocol
          • Rate Limiting and Degradation
            • Sentinel Rate Limiting
            • Built-in Rate Limiting
            • Adaptive Flow Control
          • Security Policy
            • Class Check Mechanism
            • Permission Control
            • TLS Support
            • Service Authorization
          • Troubleshooting
            • Application Start Failure
            • Request Timing Sampling
            • Address not found exception
            • Low Request Success Rate
        • Reference Manual
          • Configuration Instructions
            • Native API
            • API Configuration
            • Spring
            • Spring Boot
            • XML Configuration
            • Maven Plugin Configuration
            • Configuration Loading Process
            • JVM (-D) Parameters
          • Serialization Protocol
            • Serialization Overview
            • triple
            • Protobuf
            • Protobuf Wrapper
            • dubbo
            • Hessian
            • Fastjson2
            • Fastjson
            • Avro
            • FST
            • Gson
            • Kryo
            • MessagePack
            • Serialization Protocol Upgrade
          • RPC Protocol
            • Protocol Overview
            • triple
            • dubbo
            • Multiple Protocols
            • New Features of Tripe 3.3
            • Triple Rest User Manual
            • Extension Implementations
            • Redis Protocol
            • Thrift Protocol
            • Memcached Protocol
            • Rest Protocol
            • Rmi Protocol
            • Hessian Protocol
            • Webservice Protocol
          • Registry Center and Service Discovery
            • Overview of the Registry
            • zookeeper
            • nacos
            • Application Level vs Interface Level
            • Multi-Registry
            • Extension Implementation
            • Multicast
            • Consul
            • Etcd
            • Redis
          • Configuration Center
            • Overview of Config Center
            • Zookeeper
            • Nacos
            • Apollo
            • Extension Implementations
          • Metadata Center
            • Overview of the Metadata Center
            • Nacos
            • Zookeeper
            • Extension Implementations
          • Performance Benchmark
            • Application-Level Service Discovery Benchmark
            • RPC Benchmark
            • RPC Console
          • GraalVM
            • Support for GraalVM Native Image
          • SPI Plugin Extension Points
            • SPI Overview
            • SPI Plugin List
            • Some Key SPI Usage Instructions
            • Protocol Extension
            • Call Interceptor Extension
            • Invoker Listener Extension
            • Export Listener Extension
            • Cluster extension
            • Router Extensions
            • Load Balance Extension
            • Merger Result Extension
            • Registry Center Extension
            • Monitoring Center Extension
            • Extension Point Loading Extensions
            • Dynamic Proxy Extension
            • Liveness Probe
            • Readiness Probe
            • Startup Probe
            • Compiler Extension
            • Configuration Center Extension
            • Metadata Center Extension
            • Message Dispatch Extension
            • Thread Pool Extension
            • Serialization Extension
            • Network Transport Extension
            • Information Exchange Extension
            • Networking Extension
            • Peer-to-peer network node aggregator extension
            • Telnet Command Extension
            • Status Check Extension
            • Container Extension
            • Cache Extension
            • Validation Extension
            • Logger Adapter Extension
            • QoS Anonymous Access Permission Verification Extension
          • Routing Rules
          • Standalone Operation Commands (QOS)
            • QOS Overview
            • Command List
            • Detailed Explanation of Some Commands
            • Basic Command Manual
            • Service Management Commands
            • Framework status commands
            • Runtime Management of the Logging Framework
            • Performance Sampling Command
            • Router Status Command
            • Serialization Security Audit
            • Default Monitoring Metrics Command
          • Source Code Architecture
            • Single-Port Multi-Protocol
            • Code Architecture
            • Service Invocation
            • Multi-instance Deployment
            • Multi-instance Design Concept
            • Models and Concepts
            • Operating Instances in Source Code
            • Startup Process and Module Dependency
            • Extension Point Development Guide
          • Error Code FAQ
            • 0 - Common Layer
            • 0-1 - Thread Pool Resource Exhaustion
            • 0-2 - Illegal Property Value
            • 0-3 - Unable to access cache path
            • 0-4 - Cache Entry Limit Exceeded
            • 0-5 - Cache file size exceeded
            • 0-6 - Thread Interruption Exception
            • 0-7 - Reflection class not found
            • 0-8 - Reflection Failure
            • 0-9 - Notification event failure
            • 0-10 - Current call is not supported
            • 0-11 - Service Stopping Failed
            • 0-12 - Unknown Exception
            • 0-13 - An exception occurs in the metrics collector
            • 0-14 - Monitoring Exceptions
            • 0-15 - Exception Occurred When Loading Extension Class
            • 0-16 - No available executor
            • 0-17 - An unknown exception occurs when the executor is shutting down
            • 0-18 - Thread pool executor is misused
            • 0-19 - Exception Occurred While Processing Task
            • 0-20 - Exception occurs when storing stack information
            • 0-21 - Too many instances are built
            • 0-22 - Input and Output Stream Exception
            • 0-23 - Serialization data conversion exception
            • 0-24 - Exception of Overriding Field Values
            • 0-25 - Load Mapping Error
            • 0-26 - Warning message when publishing metadata service
            • 0-27 - Thread Pool Isolation Configuration Exception
            • 0-28 - Dangerous Actions
            • 0-29 - Tracer dependency not found
            • 0-99 - Called a Deprecated Method
            • 1 - Registry Center Layer
            • 1-1 - Invalid Address
            • 1-3 - URL destruction failure
            • 1-4 - Empty Address
            • 1-5 - Received URL with no parameters
            • 1-6 - Error clearing URL cache
            • 1-7 - Failed to read and write the service cache of the registry
            • 1-8 - Failure to unregister (unsubscribe) address during destruction
            • 1-9 - Failure to read and write the registry service cache
            • 1-10 - Failed to read and write the service cache of the registry
            • 1-11 - Service instance registration failure
            • 1-12 - Instances of “Registered Service” have been destroyed
            • 1-13 - Failed to execute retry task
            • 1-14 - Dynamic Configuration Recognition Failure
            • 1-15 - Service destruction failed
            • 1-16 - Unsupported categories exist
            • 1-17 - metadata Server failure
            • 1-18 - Metadata service port not provided
            • 1-19 - K8S Listener Exception
            • 1-20 - K8S Pod does not exist
            • 1-21 - No available services in K8S
            • 1-22 - Incorrect K8S configuration address
            • 1-26 - xDS Certificate Generation Failure
            • 1-27 - K8S Listening Exception
            • 1-28 - xDS Stub Error
            • 1-29 - xDS File Read Failed
            • 1-30 - xDS Request Failed
            • 1-31 - xDS Response Failure
            • 1-32 - xDS Channel initialization failure
            • 1-33 - xDS service discovery initialization failure
            • 1-34 - Error occurred while parsing xDS
            • 1-35 - ZK Exception
            • 1-36 - Unknown Exception
            • 1-37 - Nacos Exception
            • 1-38 - Socket Connection Exception
            • 1-39 - Failed to retrieve metadata
            • 1-40 - Route waiting time is too long
            • 1-41 - Istio Exception
            • 1-42 - Low Version Services Exist in Nacos
            • 2 - Routing Layer
            • 2-1 - Routing selection execution failed
            • 2-2 - No Available Provider (Address Not Found)
            • 2-3 - Route shutdown failure
            • 2-4 - Merger interface loading failure
            • 2-5 - Filtering Provider Failure
            • 2-6 - The list of providers filtered by conditional routing is empty
            • 2-7 - Condition Routing Execution Exception
            • 2-8 - Provider Returns Exception Response
            • 2-9 - Timeout check task failure
            • 2-10 - Failure to call the service provider
            • 2-11 - Invalid Tag Routing Rule
            • 2-12 - The provider application name is empty when using tag routing
            • 2-13 - Failed to receive loading mesh routing rules
            • 2-14 - Script routing execution failed
            • 2-15 - Route rule parsing failed
            • 2-16 - Request retry failed multiple times
            • 2-17 - mock request failure
            • 2-18 - Mesh routing rules not being listened to
            • 2-19 - Asynchronous Request Failure
            • 2-20 - Failed to Merge Group Result
            • 3 - Dynamic Proxy Layer
            • 3-1 - Failed to convert the address into Invoker
            • 3-2 - Failed to publish or push service
            • 3-3 - Failure to generate bytecode through Javassist
            • 3-4 - Client request timeout
            • 3-5 - Asynchronous response raises exceptions
            • 3-6 - Proxy execution service encountered an exception
            • 3-7 - Server response result timeout
            • 3-8 - Proxy Failure
            • 4 - Protocol Layer
            • 4-1 - Unsupported Protocol
            • 4-2 - An Initial Error Occurred for the Serialization Optimizer
            • 4-3 - Interface reference call failed
            • 4-4 - Unsafe Serialization Method
            • 4-5 - Stream Closure Exception
            • 4-6 - Deserialization Failure
            • 4-7 - Error Occurred When Closing Client
            • 4-8 - Error occurred when shutting down the server
            • 4-9 - Parsing Failed
            • 4-10 - Triple serialization result failure
            • 4-11 - Request initiation failed
            • 4-12 - Failed to create Triple stream
            • 4-13 - Server Timeout
            • 4-14 - Response Result Failure
            • 4-15 - Client Stream Listener
            • 4-16 - Service is closed
            • 4-17 - Errors occur when shutting down all callers
            • 4-18 - Unable to obtain service model from the call
            • 4-19 - Possible errors in parameter values
            • 4-20 - Data Decoding Failure
            • 4-21 - Unsafe serialization data detected
            • 5 - Configuration (Central) Layer
            • 5-1 - Configuration Center Connection Failure
            • 5-2 - Failure in Registering/Unregistering Shutdown Hook Methods
            • 5-3 - An unexpected error occurs when destroying method calls
            • 5-4 - Method not found in service interface
            • 5-5 - Unable to get env variable
            • 5-6 - Attribute conflict of interface types
            • 5-7 - Unexpected error occurred while canceling export
            • 5-8 - The protocol will use a randomly available port
            • 5-9 - Service configuration export failed
            • 5-10 - Service registration interface application mapping failed
            • 5-11 - Registration Instance Error
            • 5-12 - Refresh instance and metadata error
            • 5-13 - Unable to Destroy Model
            • 5-14 - Model startup error
            • 5-15 - Model Reference Error
            • 5-16 - Unable to find any valid protocol
            • 5-17 - Parameter Value Format Error
            • 5-18 - Notification Registration Event Failed
            • 5-20 - Error occurred when stopping the dubbo module
            • 5-21 - Exception occurred when destroying the service
            • 5-22 - An error occurred when initializing the registry
            • 5-23 - Waiting for export/reference service to encounter an exception
            • 5-24 - Asynchronous waiting for service reference exceptions
            • 5-25 - Custom implementation causes undefined exceptions
            • 5-26 - Metadata has been exported
            • 5-27 - Incorrect usage of internal class API
            • 5-28 - No available annotations found
            • 5-29 - Scan package not configured
            • 5-30 - Duplicate Bean Definition Declaration
            • 5-31 - Status Check Error
            • 5-32 - Error Occurred When Apollo Disconnected
            • 5-33 - Exception Occurred During Apollo Configuration Update Event
            • 5-34 - Error Occurred in NACOS
            • 5-35 - Container initialization failure
            • 5-36 - Error occurred during filter validation
            • 5-37 - Dynamic configuration listener processing error
            • 5-38 - Configuration parameter undefined
            • 5-39 - Error occurred with Dubbo Config Bean Initializer
            • 5-40 - Dubbo configuration bean not found
            • 5-41 - Failed to Read SSL Certificate
            • 5-42 - Dubbo Certificate Issuance Failure
            • 5-43 - Dubbo certificate issuance connection is insecure
            • 6 - Network Transport Layer
            • 6-1 - Server Connection Failure
            • 6-2 - Client Timeout
            • 6-3 - Network connection closure failure
            • 6-4 - Unknown Exception in Network Communication Layer
            • 6-5 - Network disconnection failure
            • 6-6 - Unsupported Message
            • 6-7 - Server connection failure
            • 6-8 - Failed to decode return data
            • 6-9 - Server Connection Failure
            • 6-10 - Payload Limit Exceeded Exception
            • 6-11 - Character set not supported
            • 6-12 - Error occurring during ZK client destruction
            • 6-13 - Stream Closed Exception
            • 6-14 - Server response failure
            • 6-15 - Skip unread stream data
            • 6-16 - Exception Occurred During Reconnection
            • 7 - QoS Plugin Module
            • 7-1 - QOS is Closed
            • 7-2 - QOS is enabled
            • 7-3 - Set the warning percentage value for timeout
            • 7-4 - QOS Service Startup Failure
            • 7-5 - QOS command not found
            • 7-6 - QOS encountered an unknown exception
            • 7-7 - QOS Unauthorized Access
            • 81 - Unit Test Helper Module (Registry)
            • 81-1 - ZK Startup Exception
            • 81-2 - ZK Destruction Exception
            • 81-3 - Unable to download file via URL
            • 81-4 - Embedded ZooKeeper Runtime Exception
            • 99 - Other Unknown Errors
            • 99-0 - Internal Unknown Error
            • 99-1 - Program Interrupted
            • Introduction to the error code mechanism
          • Upgrades and Compatibility
            • Upgrade to Dubbo3
            • Upgrade to Triple Protocol
            • Upgrade to Application-Level Service Discovery
            • Changelog
            • Upgrade from 2.x to 3.x
            • Upgrade from 3.0 to 3.1
            • Upgrade from 3.1 to 3.2
            • Upgrade from 3.2 to 3.3
      • Golang SDK
        • Framework Introduction
        • Version Information
        • Quick Start
          • Develop RPC Services
          • Developing Microservice Applications
        • Usage Tutorial
          • RPC Framework
            • Streaming Communication
            • Timeout Duration
            • Communication Protocol
            • Exception Type Return Values
            • Health Check
            • Request Retry
            • Passing Additional Parameters
            • Startup check
            • Filter Interceptor
          • Address Discovery
            • Using Nacos as the Registry
            • Using Zookeeper as a registry
            • Multiple Registration Centers
          • Load Balancing
            • Load Balancing
          • Configuration File
            • Local Configuration File
            • Remote Configuration File
          • Visual Observation
            • Framework Logs
            • Metrics Monitoring
            • End-to-End Tracing
          • Traffic Control
            • Routing Rules
            • Sentinel Rate Limiting and Downgrade
          • HTTP Gateway Access
            • Access Ingress Traffic
            • Exposing Dubbo-go services using Pixiu
          • Distributed Transactions
            • Seata Distributed Transactions
          • Interoperability with Dubbo Java
            • Non-Protobuf Mode Protocol Interoperability
            • protobuf+triple protocol intercommunication
            • Service Discovery Achieves Address Interoperability
          • Interoperability with gRPC
            • Intercommunication with gRPC applications
        • Reference Manual
          • Ecosystem Components
          • Generic Invocation
          • Using the dubbogo-cli Tool
          • Source Code Interpretation
            • Network Protocol
            • Registry
            • New features
            • Generic Call
            • Generic Invocation
            • AOP and Extension Mechanism
            • Architecture
            • The Application and Interface of Dubbo
          • Using Nacos as a Registry
      • Node.js SDK
        • Quick Start
      • Web SDK
        • Access Dubbo Services via Web Browser
      • Python SDK
        • Quick Start
        • Custom Serialization
        • Streaming Communication Model
        • Service Discovery
      • Rust SDK
        • Quick Start
        • Interoperability between Rust and Java
        • Service Discovery
        • Service Routing
        • Communication using Unix Socket Connector
        • Streaming Communication Model
      • Control Panel
        • Architecture and Installation
        • Document Query
        • Service Testing
        • Service Mock
    • Others
      • Metrics
        • Standard Monitoring Metrics
      • Integration Adaptation
        • Prometheus
        • Grafana
        • Skywalking
        • Zipkin
        • Nacos
        • Higress
        • Zookeeper
      • Proposals
        • Rest Protocol
        • Registry & Configuration & Metadata Center
        • Admin Architecture Design
        • Metrics tracking
        • Flexible Services
        • Application-level service discovery
        • Enhanced HTTP Standard Capabilities of Triple - Multi Content-Type Support
      • Protocol Specifications
        • Advantages and Goals of the Triple Protocol
        • Triple Protocol Specification
        • Dubbo2 Protocol Specification
        • HTTP Protocol Specification
      • Erlang SDK
        • Quick Start
        • Consumer Configuration
        • Provider Configuration
        • Serialization Configuration Options
      • Pixiu gateway
        • Getting Started Overview
          • What is Pixiu
          • Pixiu Terminology
          • Pixiu Frequently Asked Questions
        • User Documentation
          • Quick Start
          • Start and configuration
          • Deployment operations
          • Introduction to Listener
            • Introduction to Http Listener
            • Introduction to Http2 Listener
            • Introduction to TCP Listener
            • Introduction to Triple Listener
          • Introduction to Network Filter
            • Introduction to Http NetWorkFilter
            • Introduction to Grpc NetWorkFilter
            • Introduction to Dubbo NetWorkFilter
          • Introduction to Adapter
            • Dubbo Cluster Center Adapter
            • Spring Cloud Cluster Center Adapter
          • Introduction to Http Filter
            • Introduction to Dubbo HttpFilter
            • Introduction to RateLimiter
            • Circuit Breaker Introduction
          • Case Introduction
            • Introduction to Http Proxy Case
            • Introduction to the Http to Dubbo case
            • Https Case Introduction
          • Quality Indicators
            • Performance
            • Stability
          • Appendix
            • HTTP to Dubbo Default Conversion Protocol
        • Developer Guide
          • Introduction to the Pixiu Filter System
          • dubbo-pilot Control Plane Deployment
          • Introduction to Trie Prefix Tree
    • Security Announcements
      • Serialization Security
      • RPC Protocol Security
      • Registry Center Security
      • Dubbo Admin Security
      • Log4j Vulnerability Impact
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