| - | - | instanceNameMaxLength| Max length limitation of service instance name. The max length of service + instance names should be less than 200.|SW_INSTANCE_NAME_MAX_LENGTH|70|
| - | - | endpointNameMaxLength| Max length limitation of endpoint name. The max length of service + endpoint names should be less than 240.|SW_ENDPOINT_NAME_MAX_LENGTH|150|
| - | - | searchableTracesTags | Define the set of span tag keys, which should be searchable through the GraphQL. Multiple values should be separated through the comma. | SW_SEARCHABLE_TAG_KEYS | http.method,status_code,db.type,db.instance,mq.queue,mq.topic,mq.broker|
| - | - | gRPCThreadPoolSize|Pool size of gRPC server| - | CPU core * 4|
| - | - | gRPCThreadPoolQueueSize| The queue size of gRPC server| - | 10000|
| - | - | maxConcurrentCallsPerConnection | The maximum number of concurrent calls permitted for each incoming connection. Defaults to no limit. | - | - |
| - | - | maxMessageSize | Sets the maximum message size allowed to be received on the server. Empty means 4 MiB | - | 4M(based on Netty) |
| - | - | gRPCThreadPoolSize|Pool size of gRPC server| SW_CORE_GRPC_THREAD_POOL_SIZE | CPU core * 4|
| - | - | gRPCThreadPoolQueueSize| The queue size of gRPC server| SW_CORE_GRPC_POOL_QUEUE_SIZE | 10000|
| - | - | maxConcurrentCallsPerConnection | The maximum number of concurrent calls permitted for each incoming connection. Defaults to no limit. | SW_CORE_GRPC_MAX_CONCURRENT_CALL | - |
| - | - | maxMessageSize | Sets the maximum message size allowed to be received on the server. Empty means 4 MiB | SW_CORE_GRPC_MAX_MESSAGE_SIZE | 4M(based on Netty) |
| - | - | remoteTimeout |Timeout for cluster internal communication, in seconds.| - |20|
| - | - | maxSizeOfNetworkAddressAlias|Max size of network address detected in the be monitored system.| - | 1_000_000|
| - | - | maxPageSizeOfQueryProfileSnapshot|The max size in every OAP query for snapshot analysis| - | 500 |
| - | - | restHost| Binding IP of restful service. Services include GraphQL query and HTTP data report| - | - |
| - | - | restPort | Binding port of restful service | - | - |
| - | - | restContextPath| Web context path of restful service| - | - |
| - | - | gRPCHost|Binding IP of gRPC service. Services include gRPC data report and internal communication among OAP nodes| - | - |
| - | - | gRPCPort| Binding port of gRPC service | - | - |
| - | - | gRPCThreadPoolSize|Pool size of gRPC server| - | CPU core * 4|
| - | - | gRPCThreadPoolQueueSize| The queue size of gRPC server| - | 10000|
| - | - | gRPCSslEnabled| Activate SSL for gRPC service | - | - |
| - | - | gRPCSslKeyPath| The file path of gRPC SSL key| - | - |
| - | - | gRPCSslCertChainPath| The file path of gRPC SSL cert chain| - | - |
| - | - | maxConcurrentCallsPerConnection | The maximum number of concurrent calls permitted for each incoming connection. Defaults to no limit. | - | - |
| - | - | gRPCHost|Binding IP of gRPC service. Services include gRPC data report and internal communication among OAP nodes| SW_RECEIVER_GRPC_HOST | 0.0.0.0. Not Activated |
| - | - | gRPCPort| Binding port of gRPC service | SW_RECEIVER_GRPC_PORT | Not Activated |
| - | - | gRPCThreadPoolSize|Pool size of gRPC server| SW_RECEIVER_GRPC_THREAD_POOL_SIZE | CPU core * 4|
| - | - | gRPCThreadPoolQueueSize| The queue size of gRPC server| SW_RECEIVER_GRPC_POOL_QUEUE_SIZE | 10000|
| - | - | gRPCSslEnabled| Activate SSL for gRPC service | SW_RECEIVER_GRPC_SSL_ENABLED | false |
| - | - | gRPCSslKeyPath| The file path of gRPC SSL key| SW_RECEIVER_GRPC_SSL_KEY_PATH | - |
| - | - | gRPCSslCertChainPath| The file path of gRPC SSL cert chain| SW_RECEIVER_GRPC_SSL_CERT_CHAIN_PATH | - |
| - | - | maxConcurrentCallsPerConnection | The maximum number of concurrent calls permitted for each incoming connection. Defaults to no limit. | SW_RECEIVER_GRPC_MAX_CONCURRENT_CALL | - |
| - | - | authentication | The token text for the authentication. Work for gRPC connection only. Once this is set, the client is required to use the same token. | SW_AUTHENTICATION | - |
| receiver-register|default| Read [receiver doc](backend-receivers.md) for more details | - | - |
| receiver-trace|default| Read [receiver doc](backend-receivers.md) for more details | - | - |
| receiver-jvm| default| Read [receiver doc](backend-receivers.md) for more details | - | - |