Node Types

• RPC / full nodes: these nodes are generally used for querying data or interacting with the chain. They maintain some state but not since genesis. The default settings will run RPC / full nodes.
• Archive / full Nodes: maintain full state of the blockchain from genesis. Generally requires large disks (10 TB+ minimum). To enable this type of node, set min-retain-blocks=0 and pruning="nothing" in your app.toml.
• State Sync Nodes: provide snapshot data for other nodes to use to bootstrap onto the chain. To enable this type of node, set enable=true under the [statesync] section in config.toml.
• Validator Nodes provide security to the chain by proposing and signing blocks. To enable this type of node, set mode=validator in config.toml. Note that because Sei is proof-of-stake, you must have enough delegation to join the active set.

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Commonly Used Ports

• 26656: The default port for the P2P communication. This port is used to communicate with other nodes and must be open to join a network.
• 26657: The default port for the RPC interface. Because this port is used for querying and sending transactions, it must be open for serving queries from seid.
• 1317: The default port for interacting with the Seid API server for HTTP RESTful requests. This allows applications and services to interact with the seid instance through RPC.
• 9090: The default port for gRPC communication. This is used for high-performance communication with the node.
• 8545: The default port for EVM HTTP RPC. This port is used for Ethereum JSON-RPC calls and must be open if you want to interact with EVM-compatible applications.
• 8546: The default port for EVM WebSocket RPC. This port provides real-time communication for EVM applications that require WebSocket connections.
• 26660: The default port for interacting with the Prometheus database, which can be used to monitor the environment. In the default configuration, this port is not open.
• 8545: Also the default listen address (127.0.0.1:8545) for the frozen-rpc-router binary, which proxies EVM JSON-RPC requests to a live node and one or more freeze-height-frozen nodes based on block number. It shares the standard EVM JSON-RPC port convention with the live node.

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Systemd File Template

[Unit]
Description=Sei Node
After=network.target

[Service]
User=<USER>
Type=simple
ExecStart=<PATH_TO_SEID>/seid start --chain-id <Network>
Restart=always

# wait 30 seconds before restarting the service after it has failed.

RestartSec=30

# wait up to 30 seconds for the service to stop gracefully when it is being stopped.

TimeoutStopSec=30

# send the SIGINT signal (equivalent to pressing Ctrl-C) to the service process when it is being stopped

# giving it a chance to shut down gracefully.

KillSignal=SIGINT
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target