JVM (-D) Parameters

JVM (-D) Parameters

-Ddubbo.registry.address=“nacos://host:port”

-Ddubbo.protocol.port=“20880”

……| Dubbo supports specifying all configuration items in the JVM parameter format. Here, config refers to items such as application, registry, protocol, and property refers to specific properties within each configuration item.
dubbo.resolve.file| -Ddubbo.resolve.file=/home/ken/…/dubbo-resolve.properties| Specifies the direct connection URL for each interface in the file, e.g., org.apache.dubbo.demo.DemoService=tri://127.0.0.1:50051/org.apache.dubbo.demo.DemoService?xxx=xxx
org.graalvm.nativeimage.imagecode| | <https://github.com/oracle/graal/blob/master/sdk/src/org.graalvm.nativeimage/src/org/graalvm/nativeimage/ImageInfo.java>
dubbo.properties.file| -Ddubbo.properties.file=foo.properties| Specifies the properties configuration file path, which can be an absolute path or a classpath-relative path. Default value is dubbo.properties.
dubbo.jstack-dump.max-line| -Ddubbo.jstack-dump.max-line=20| Dubbo supports automatic printing of the call stack. This parameter controls the number of stack lines, e.g., only the first 20 lines will be printed.
dubbo.json-framework.prefer| -Ddubbo.json-framework.prefer=gson| Sets the specific implementation of JSON serialization in the framework. Currently available implementations are fastjson2, fastjson, gson, jackson. The framework automatically finds the available implementation in decreasing order of preference.
dubbo.network.interface.ignored| -Ddubbo.network.interface.ignored=eth1,eth2| In multi-network card environments, used when you need to manually control the network card address registered with the registry. It is used to exclude certain network cards.
dubbo.network.interface.preferred| -Ddubbo.network.interface.ignored=eth0| In multi-network card environments, used to specify a particular network card for registration with the registry.
sun.rmi.transport.tcp.responseTimeout| -Dsun.rmi.transport.tcp.responseTimeout=5000| Sets the timeout for RMI protocol, in milliseconds.
env| | Specific parameter for Apollo configuration center.
app.id| | Specific parameter for Apollo configuration center.
apollo.cluster| | Specific parameter for Apollo configuration center.
apollo.meta| | Specific parameter for Apollo configuration center.
dubbo.mapping.cache.filePath| -Ddubbo.mapping.cache.filePath=~/.dubbo/mapping/| Sets the cache file for interface-application mapping, usually for service discovery. The file’s absolute path address.
dubbo.mapping.cache.fileName| -Ddubbo.mapping.cache.fileName=dubbo-mapping| Sets the cache file for interface-application mapping, usually for service discovery. The file name; the final file will be stored as dubbo-mapping.dubbo.cache.
dubbo.mapping.cache.entrySize| -Ddubbo.mapping.cache.maxFileSize=300| Sets the maximum number of entries in the interface-application mapping cache file, usually for service discovery.
dubbo.mapping.cache.maxFileSize| -Ddubbo.mapping.cache.maxFileSize=104857600| Sets the maximum space for the interface-application mapping cache file, usually for service discovery, in bytes.
dubbo.meta.cache.filePath| -Ddubbo.meta.cache.filePath=~/.dubbo/meta/| Sets the cache file for metadata cache, usually for service discovery. The file’s absolute path address.
dubbo.meta.cache.fileName| -Ddubbo.meta.cache.fileName=dubbo-meta| Sets the cache file for metadata cache, usually for service discovery. The file name; the final file will be stored as dubbo-meta.dubbo.cache.
dubbo.meta.cache.entrySize| -Ddubbo.meta.cache.maxFileSize=300| Sets the maximum number of entries in the metadata cache file, usually for service discovery.
dubbo.meta.cache.maxFileSize| -Ddubbo.meta.cache.maxFileSize=104857600| Sets the maximum space for the metadata cache file, usually for service discovery, in bytes.
dubbo.application.use-secure-random-request-id| -Ddubbo.application.use-secure-random-request-id=true| Sets the rule for generating the request ID for each RPC call. If not set, an incremental value will be used.
dubbo.protocol.default-close-timeout| -Ddubbo.protocol.default-close-timeout=10000| Sets the TCP server shutdown wait time, in milliseconds.
dubbo.protocol.default-heartbeat| -Ddubbo.protocol.default-heartbeat=10000| Sets the interval for initiating heartbeat, in milliseconds.
dubbo.hessian.allowNonSerializable| | Allows serialization of classes that do not implement the Serializable interface, effective for Hessian serialization.
dubbo.application.hessian2.whitelist| -Ddubbo.application.hessian2.whitelist=true| Enables a whitelist mechanism for Hessian serialization. If set to true, it will continue to configure the following allow rules; otherwise, it will configure the deny rules.
dubbo.application.hessian2.allow| -Ddubbo.application.hessian2.allow=org.apache.dubbo.;com.company.| If true, configures allow rules (refer to the documentation for more details).
dubbo.application.hessian2.deny| -Ddubbo.application.hessian2.deny=org.apache.dubbo.;io.commons.| If false, configures deny rules (refer to the documentation for more details).
dubbo.application.manual-register| -Ddubbo.application.manual-register=true| When set, all services will not be automatically registered to the registry until the user calls online or other commands to manually complete registration.
dubbo.compact.enable| |
dubbo.migration-file.enable| -Ddubbo.migration-file.enable=true| Whether to enable rule file reading during migration to application-level address discovery.
dubbo.migration.file| -Ddubbo.migration.file=dubbo-migration.yaml| Specifies the path to the rule file for migrating to application-level address discovery, which can be an absolute or classpath-relative path. Default value is dubbo-migration.yaml.
dubbo.application.logger| -Ddubbo.application.logger=slf4j| Sets the logging component used by the Dubbo framework. After setting, Dubbo’s own logs will be printed here (does not affect application logs). Currently supported components are slf4j, log4j, log4j2, etc. Ensure that the corresponding component dependency is added to the application.
dubbo.properties.file| -Ddubbo.properties.file=foo.properties| Specifies the properties configuration file path, which can be an absolute or classpath-relative path. Default value is dubbo.properties.

Environment Variables

DUBBO_REGISTRY_ADDRESS=“nacos://host:port”

DUBBO_PROTOCOL_PORT=“20880”

……| Dubbo supports specifying all configuration items as environment variables. CONFIG-NAME refers to items such as application, registry, protocol, and PROPERTY refers to specific properties within each item.
DUBBO_DEFAULT_SERIALIZATION| DUBBO_DEFAULT_SERIALIZATION=“hessian2”| Sets the default serialization method for the framework, e.g., hessian2, fastjson2, msgpack.
DUBBO2_COMPACT_ENABLE| DUBBO2_COMPAT_ENABLE=“true”|
DUBBO_ENV_KEYS| DUBBO_LABELS=“tag1=value1; tag2=value2”| tag1=value1 will be reported as an additional parameter to the URL, serving as a system environment variable for instance tagging, etc.
DUBBO_LABELS| DUBBO_ENV_KEYS=“DUBBO_TAG1, DUBBO_TAG2”| Dubbo will read DUBBO_TAG1, DUBBO_TAG2 environment variables, and report values such as DUBBO_TAG1=value as additional parameters to the URL.
POD_NAMESPACE| | Specifies the namespace for Kubernetes Service scenarios.
CLUSTER_DOMAIN| | Specifies the cluster name for Kubernetes Service scenarios, default is default.
DUBBO_IP_TO_REGISTRY| DUBBO_IP_TO_REGISTRY=30.123.45.187| Specifies the IP address to register in the registry URL.
DUBBO_PORT_TO_REGISTRY| DUBBO_PORT_TO_REGISTRY=20880| Specifies the port number to register in the registry URL.
DUBBO{PROTOCOL}PORT_TO_REGISTRY| DUBBO_DUBBO_IP_TO_REGISTRY=30.123.45.187

DUBBO_TRI_IP_TO_REGISTRY=30.123.45.187| Specifies the IP address to register in the registry URL, and can specify different IPs for different protocols.
DUBBO{PROTOCOL}PORT_TO_REGISTRY| DUBBO_DUBBO_PORT_TO_REGISTRY=20880

DUBBO_TRI_PORT_TO_REGISTRY=50051| Specifies the port number to register in the registry URL, and can specify different ports for different protocols.
DUBBO_IP_TO_BIND| DUBBO_IP_TO_BIND=30.123.45.187| Specifies the IP address for TCP binding.
DUBBO_PORT_TO_BIND| DUBBO_PORT_TO_BIND=20880| Specifies the port for TCP binding.
DUBBO{PROTOCOL}IP_TO_BIND| DUBBO_DUBBO_IP_TO_BIND=30.123.45.187

DUBBO_TRI_IP_TO_BIND=30.123.45.187| Specifies the IP address for TCP binding, and can specify different IPs for different protocols.
DUBBO{PROTOCOL}_PORT_TO_BIND| DUBBO_DUBBO_PORT_TO_BIND=20880

DUBBO_TRI_PORT_TO_BIND=50051| Specifies the port for TCP binding, and can specify different ports for different protocols.
dubbo.properties.file| dubbo.properties.file=foo.properties| Specifies the properties configuration file path, which can be an absolute or classpath-relative path. Default value is dubbo.properties.
dubbo.migration.file| dubbo.migration.file=dubbo-migration.yaml| Specifies the migration rule file path for application-level address discovery, which can be an absolute or classpath-relative path. Default value is dubbo-migration.yaml.

Configuration Manual

Regardless of whether you are using Spring Boot, XML, annotations, or APIs to write Dubbo applications, you can refer to the table below to understand the specific meaning of each configuration item.

dubbo.tracing.baggage.correlation

Class: org.apache.dubbo.config.nested.BaggageConfig$Correlation

dubbo.tracing.tracing-exporter.otlp-config

Class: org.apache.dubbo.config.nested.ExporterConfig$OtlpConfig

dubbo.tracing.tracing-exporter.zipkin-config

Class: org.apache.dubbo.config.nested.ExporterConfig$ZipkinConfig

dubbo.metrics.prometheus.exporter

Class: org.apache.dubbo.config.nested.PrometheusConfig$Exporter

dubbo.metrics.prometheus.pushgateway

Class: org.apache.dubbo.config.nested.PrometheusConfig$Pushgateway

Unknown group

Class: Unknown

dubbo.tracing.baggage

Class: org.apache.dubbo.config.nested.BaggageConfig

dubbo.tracing.propagation

Class: org.apache.dubbo.config.nested.PropagationConfig

dubbo.tracing.sampling

Class: org.apache.dubbo.config.nested.SamplingConfig

dubbo.tracing.tracing-exporter

Class: org.apache.dubbo.config.nested.ExporterConfig

dubbo.rpc.tri

Class: org.apache.dubbo.config.TripleConfig

dubbo

Class: org.apache.dubbo.spring.boot.autoconfigure.DubboConfigurationProperties

dubbo.application

Class: org.apache.dubbo.config.ApplicationConfig

dubbo.config-center

Class: org.apache.dubbo.config.ConfigCenterConfig

dubbo.consumer

Class: org.apache.dubbo.config.ConsumerConfig

dubbo.metadata-report

Class: org.apache.dubbo.config.MetadataReportConfig

dubbo.metrics

Class: org.apache.dubbo.config.MetricsConfig

dubbo.module

Class: org.apache.dubbo.config.ModuleConfig

dubbo.monitor

Class: org.apache.dubbo.config.MonitorConfig

dubbo.protocol

Class: org.apache.dubbo.config.ProtocolConfig

dubbo.provider

Class: org.apache.dubbo.config.ProviderConfig

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