Configure node properties
This topic outlines node properties that can be configured via properties files or environment variables. For
blockchain-specific configuration properties, refer to the
Blockchain configuration page.
Node properties
Below is a comprehensive list of node properties:
| Property Name | Description | Type | Default Value | Environment Variable |
|---|---|---|---|---|
cryptosystem | Cryptosystem class name | String | "net.postchain.crypto.Secp256K1CryptoSystem" | POSTCHAIN_CRYPTO_SYSTEM |
configuration.provider.node | Node configuration provider (properties/manual/managed) | String | "properties" | POSTCHAIN_NODE_CONFIG_PROVIDER |
database.driverclass | Database driver class | String | "org.postgresql.Driver" | POSTCHAIN_DB_DRIVER |
database.url | Database URL | String | "" | POSTCHAIN_DB_URL |
database.schema | Database schema | String | "" | POSTCHAIN_DB_SCHEMA |
database.username | Database username | String | "" | POSTCHAIN_DB_USERNAME |
database.password | Database password | String | "" | POSTCHAIN_DB_PASSWORD |
database.readConcurrency | Database read concurrency | Int | 10 | POSTCHAIN_DB_READ_CONCURRENCY |
database.blockBuilderWriteConcurrency | Database block builder connection pool write concurrency | Int | 8 | POSTCHAIN_DB_BLOCK_BUILDER_WRITE_CONCURRENCY |
database.sharedWriteConcurrency | Database shared connection pool write concurrency | Int | 2 | POSTCHAIN_DB_SHARED_WRITE_CONCURRENCY |
database.blockBuilderMaxWaitWrite | Maximum wait time for a connection on the block builder connection pool (ms) | Int | 100 | POSTCHAIN_DB_BLOCK_BUILDER_MAX_WAIT_WRITE |
database.sharedMaxWaitWrite | Maximum wait time for a connection on the shared connection pool (ms) | Int | 10000 | POSTCHAIN_DB_SHARED_MAX_WAIT_WRITE |
database.suppressCollationCheck | Ignore incorrect database collation configuration | Boolean | false | POSTCHAIN_DB_SUPPRESS_COLLATION_CHECK |
exit-on-fatal-error | Exit on fatal database error | Boolean | false | POSTCHAIN_EXIT_ON_FATAL_ERROR |
infrastructure | Infrastructure implementation to use | String | "base/ebft" | POSTCHAIN_INFRASTRUCTURE |
genesis.pubkey | Public key of the genesis node | String | POSTCHAIN_GENESIS_PUBKEY | |
genesis.host | Host address of the genesis node | String | POSTCHAIN_GENESIS_HOST | |
genesis.port | Genesis node peer-to-peer port | String | POSTCHAIN_GENESIS_PORT | |
messaging.privkey | Node private key | String | "" | POSTCHAIN_PRIVKEY |
messaging.pubkey | Node public key | String | "" | POSTCHAIN_PUBKEY |
messaging.port | Peer-to-peer port | Int | 9870 | POSTCHAIN_PORT |
metrics.prometheus.port | Prometheus metrics port (or -1 to disable) | Int | -1 | POSTCHAIN_PROMETHEUS_PORT |
fastsync.resurrect_drained_time | Time (ms) until a DRAINED node is set to SYNCABLE again | Long | 10000 | POSTCHAIN_FASTSYNC_RESURRECT_DRAINED_TIME |
fastsync.resurrect_unresponsive_time | Time (ms) until an UNRESPONSIVE node is set to SYNCABLE again | Long | 20000 | POSTCHAIN_FASTSYNC_RESURRECT_UNRESPONSIVE_TIME |
fastsync.parallelism | Number of parallel sync jobs | Int | 10 | POSTCHAIN_FASTSYNC_PARALLELISM |
fastsync.exit_delay | Minimum time (ms) to remain in sync mode | Long | 60000 | POSTCHAIN_FASTSYNC_EXIT_DELAY |
fastsync.job_timeout | Sync job timeout (ms) | Long | 10000 | POSTCHAIN_FASTSYNC_JOB_TIMEOUT |
fastsync.loop_interval | Sleep time between sync job iterations | Long | 100 | POSTCHAIN_FASTSYNC_LOOP_INTERVAL |
fastsync.must_sync_until_height | Minimum sync height (or -1 to disable) | Long | -1 | POSTCHAIN_FASTSYNC_MUST_SYNC_UNTIL_HEIGHT |
fastsync.max_errors_before_blacklisting | Max errors before blacklisting a peer | Int | 10 | POSTCHAIN_FASTSYNC_MAX_ERRORS_BEFORE_BLACKLISTING |
fastsync.disconnect_timeout | Time (ms) before a peer is considered disconnected | Long | 10000 | POSTCHAIN_FASTSYNC_DISCONNECT_TIMEOUT |
fastsync.blacklisting_timeout | Maximum time a node is blacklisted if no errors occur (ms) | Long | 60000 | POSTCHAIN_FASTSYNC_BLACKLISTING_TIMEOUT |
fastsync.blacklisting_error_timeout | Maximum time an error is considered when deciding if a node should be blacklisted (ms) | Long | 3600000 | POSTCHAIN_FASTSYNC_BLACKLISTING_ERROR_TIMEOUT |
slowsync.enabled | Is slowsync enabled. | Boolean | true | POSTCHAIN_SLOWSYNC_ENABLED |
slowsync.max_sleep_time | Maximum sleep time for slowsync (ms). | Long | 600000 | POSTCHAIN_SLOWSYNC_MAX_SLEEP_TIME |
slowsync.min_sleep_time | Minimum sleep time for slowsync (ms). | Long | 20 | POSTCHAIN_SLOWSYNC_MIN_SLEEP_TIME |
slowsync.max_peer_wait_time | A peer must answer before this, or we will give up (ms). | Long | 2000 | POSTCHAIN_SLOWSYNC_MAX_PEER_WAIT_TIME |
applied-config-send-interval-ms | Interval for signers to broadcast info about their currently applied config (ms) | Long | 1000 | POSTCHAIN_CONFIG_SEND_INTERVAL_MS |
blockchain_ancestors.<brid_X> | List of blockchain ancestors [<node_id_Y>:<brid_Z>] | String |
Peer configuration
You can configure peers using these properties in the node configuration:
| Property Name | Description | Type |
|---|---|---|
node.<index>.pubkey | Peer's public key | String |
node.<index>.host | Peer's host address | String |
node.<index>.port | Peer's peer-to-peer port | Int |
REST API configuration
| Property Name | Description | Type | Default Value | Environment Variable |
|---|---|---|---|---|
api.basepath | Base path for the REST API (leave empty for root). Don't append a trailing slash to the base path. | String | "" | POSTCHAIN_API_BASEPATH |
api.port | REST API port (-1 to disable, 0 for a random free port) | Int | 7740 | POSTCHAIN_API_PORT |
api.request-concurrency | Number of concurrent HTTP requests to handle. The default value 0 means the number of available processors * 2. | Int | 0 | POSTCHAIN_API_REQUEST_CONCURRENCY |
api.chain-request-concurrency | Concurrent HTTP requests per blockchain. Unlimited by default. If exceeded, 503 Service Unavailable is returned. | Int | -1 | POSTCHAIN_API_CHAIN_REQUEST_CONCURRENCY |
debug.port | Debug API port | Int | 7750 | POSTCHAIN_DEBUG_PORT |
Container (subnode) configuration
For subnodes within containers, use the following configuration properties:
| Property Name | Description | Type | Required | Default Value | Environment Variable |
|---|---|---|---|---|---|
container.docker-image | Docker image name to use for subnodes | String | Required | POSTCHAIN_SUBNODE_DOCKER_IMAGE | |
container.master-host | Host address of the master node from the subnode perspective | String | Required | POSTCHAIN_MASTER_HOST | |
container.master-port | Master node port for Netty communication | Int | 9860 | POSTCHAIN_MASTER_PORT | |
container.network | Custom Docker network to use for subnodes | String | POSTCHAIN_SUBNODE_NETWORK | ||
container.subnode-host | Subnode host address from the master node perspective | String | Required | POSTCHAIN_SUBNODE_HOST | |
container.rest-api-port | Subnode REST API port | Int | 7740 | POSTCHAIN_SUBNODE_REST_API_PORT | |
container.debug-api-port | Subnode debug API port | Int | 7750 | POSTCHAIN_SUBNODE_DEBUG_API_PORT | |
container.admin-rpc-port | Subnode gRPC API port | Int | 50051 | POSTCHAIN_SUBNODE_ADMIN_RPC_PORT | |
container.subnode-user | Custom user to run Docker containers | String | POSTCHAIN_SUBNODE_USER | ||
container.send-master-connected-peers-period | Interval for the master node to send the list of connected peers to subnodes (milliseconds) | Int | 60000 | POSTCHAIN_SEND_MASTER_CONNECTED_PEERS_PERIOD | |
container.healthcheck.running-containers-check-period | Interval for the master node to check subnode health (milliseconds) | Int | 60000 | POSTCHAIN_HEALTHCHECK_RUNNING_CONTAINERS_CHECK_PERIOD | |
container.filesystem | Filesystem to use for subnodes (LOCAL, ZFS, EXT4) | String | "LOCAL" | POSTCHAIN_SUBNODE_FILESYSTEM | |
container.host-mount-dir | Directory in the host filesystem where subnode mount directories will be created | String | Required | POSTCHAIN_HOST_MOUNT_DIR | |
container.host-mount-device | Host device that container.host-mount-dir is mounted on | String | Required | POSTCHAIN_HOST_MOUNT_DEVICE | |
container.master-mount-dir | Directory in the master container filesystem used for subnode mount directories | String | container.host-mount-dir | POSTCHAIN_MASTER_MOUNT_DIR | |
container.bind-pgdata-volume | Bind PostgreSQL data directory to the host file system (persistence) | Boolean | true | POSTCHAIN_BIND_PGDATA_VOLUME | |
container.docker-log-driver | Custom Docker log driver | String | POSTCHAIN_DOCKER_LOG_DRIVER | ||
container.docker-log-opts | Custom Docker log options | String | POSTCHAIN_DOCKER_LOG_OPTS | ||
container.remote-debug-enabled | Enable remote debugging for subnodes (attach to port mapped to 8000) | Boolean | false | POSTCHAIN_SUBNODE_REMOTE_DEBUG_ENABLED | |
container.remote-debug-suspend | Enable remote debugging with suspend flag | Boolean | false | POSTCHAIN_SUBNODE_REMOTE_DEBUG_SUSPEND | |
container.metrics.prometheus.port | Enable Prometheus metrics on subnodes using this port (not mapped to host) | Int | -1 | POSTCHAIN_SUBNODE_PROMETHEUS_PORT | |
container.jmx-base-port | Enable JMX on subnodes with JMX port mapped to this base value + container id | Int | -1 | POSTCHAIN_SUBNODE_JMX_BASE_PORT | |
container.label.key1=value1 | Set Docker label key1=value1 on the subnode container (multiple allowed) | String | |||
min-space-quota-buffer-mb | Disk space margin to quota limit, subnode switches to read-only mode if this limit is reached | Int | 100 | POSTCHAIN_SUBNODE_MIN_SPACE_QUOTA_BUFFER_MB | |
container.log4j-configuration-file | Path to the log4j configuration file for subnodes | String | POSTCHAIN_SUBNODE_LOG4J_CONFIGURATION_FILE |
ZFS configuration
Relevant when container.filesystem is configured as ZFS. These properties apply:
| Property Name | Description | Type | Default Value | Environment Variable |
|---|---|---|---|---|
container.zfs.pool-name | Name of the ZFS pool | String | "psvol" | POSTCHAIN_ZFS_POOL_NAME |
container.zfs.pool-init-script | Script for ZFS pool setup | String | POSTCHAIN_ZFS_POOL_INIT_SCRIPT |