Updated on March 1, 2020
Besu attempts to maintain connections with static nodes by periodically initiating a connection to any unconnected static node.
Bootnodes and static nodes are parallel methods for finding peers. Depending on your use case, you can use only bootnodes, only static nodes, or both bootnodes and statics nodes. For example, you run multiple nodes on MainNet (discovery using bootnodes), but want to ensure your nodes are always connected (using static nodes).
To find peers, configure one or more bootnodes. To configure a specific set of peer connections, use static nodes, as described below.
Configure static nodes
To configure a network of static nodes:
static-nodes.jsonfile in the data directory (specified by
--data-path) of each node.
Start Besu with discovery disabled using
Runtime modifications of static nodes are not persisted between runs. The
file is not updated by the
Nodes not in the list of the static nodes are not prevented from connecting. To prevent nodes from connecting, use Permissioning.
If the added peer does not appear in the peer list (returned by
admin_peers), check the the supplied
enode URL is correct, the node is running, and the
node is listening for TCP connections on the endpoint.
Each node has a
static-nodes.json file. We recommend each node in the network has the same