Testnet Node Unable to Find Peers

[andreclaro]

Description

Our testnet node is sometimes unable to find peers and we are observing that issue again now.

Logs

besu[942757]: 2024-11-07 11:33:32.714+00:00 | EthScheduler-Timer-0 | INFO  | FullSyncTargetManager | Unable to find sync target. Waiting for 1 peers minimum. Currently checking 0 peers for usefulness

Versions

https://github.com/Consensys/linea-besu/releases/tag/24.11-delivery37

We build the software from source.

Config

config.toml:

# data
data-path="/var/lib/linea/data/execution/besu"
# Sync mode and data layer implementation
sync-mode="FAST"
data-storage-format="FOREST"
# genesis file
genesis-file="/var/lib/linea/data/execution/genesis.json"
# Boot nodes
bootnodes = ["enode://[6f20afbe4397e51b717a7c1ad3095e79aee48c835eebd9237a3e8a16951ade1fe0e66e981e30ea269849fcb6ba03d838da37f524fabd2a557474194a2e2604fa@18.221.100.27](mailto:6f20afbe4397e51b717a7c1ad3095e79aee48c835eebd9237a3e8a16951ade1fe0e66e981e30ea269849fcb6ba03d838da37f524fabd2a557474194a2e2604fa@18.221.100.27):31002","enode://[ce1e0d8e0500cb5c0ac56bdcdafb2d6320c3a2c5125b5ccf12f5dfc9b47ee74acbcafc32559017613136c9c36a0ce74ba4f83b7fb8244f099f3b15708d9d3129@3.23.75.47](mailto:ce1e0d8e0500cb5c0ac56bdcdafb2d6320c3a2c5125b5ccf12f5dfc9b47ee74acbcafc32559017613136c9c36a0ce74ba4f83b7fb8244f099f3b15708d9d3129@3.23.75.47):31000","enode://[1b026a5eb0ae74300f58987d235ef0e3a550df963345cb3574be3b0b54378bd11f14dfd515a8976f2c2d2826090e9507b8ccc24f896a9ffffffcabcfd996a733@3.129.120.128](mailto:1b026a5eb0ae74300f58987d235ef0e3a550df963345cb3574be3b0b54378bd11f14dfd515a8976f2c2d2826090e9507b8ccc24f896a9ffffffcabcfd996a733@3.129.120.128):31001"]
# Min gas price
min-gas-price=1000
# Host white list
host-whitelist=["*"]
# rpc
rpc-http-enabled=true
rpc-http-host="0.0.0.0"
rpc-http-port=8545
rpc-http-api=["ADMIN","NET","ETH","WEB3","TXPOOL"]
rpc-http-cors-origins=["all"]
rpc-http-max-active-connections=20000
# ws
rpc-ws-enabled=true
rpc-ws-api=["NET","ETH","WEB3"]
rpc-ws-host="0.0.0.0"
rpc-ws-port=8546
# p2p
p2p-port=30303
fast-sync-min-peers=1
Xeth-capability-max=67
# metrics
metrics-enabled=true
metrics-host="0.0.0.0"
metrics-port=6060
# Plugin Configuration
plugins=["L1FinalizationTagUpdaterPlugin"]
# L1FinalizationTagUpdaterPlugin
plugin-linea-l1-smart-contract-address="0xB218f8A4Bc926cF1cA7b3423c154a0D627Bdb7E5"
plugin-linea-l1-rpc-endpoint="http://ENDPOINT_L1"

[andreclaro]

Restart solved the issue! But I think there is something that can be improved on the client to avoid restarting the client.

[andreclaro]

This is happening again and again... and the restart does not always solve the issue.

[andreclaro]

we are using the following bootnodes:
- "enode://6f20afbe4397e51b717a7c1ad3095e79aee48c835eebd9237a3e8a16951ade1fe0e66e981e30ea269849fcb6ba03d838da37f524fabd2a557474194a2e2604fa@18.221.100.27:31002"
- "enode://ce1e0d8e0500cb5c0ac56bdcdafb2d6320c3a2c5125b5ccf12f5dfc9b47ee74acbcafc32559017613136c9c36a0ce74ba4f83b7fb8244f099f3b15708d9d3129@3.23.75.47:31000"
- "enode://1b026a5eb0ae74300f58987d235ef0e3a550df963345cb3574be3b0b54378bd11f14dfd515a8976f2c2d2826090e9507b8ccc24f896a9ffffffcabcfd996a733@3.129.120.128:31001"

[andreclaro]

Do you have new or more bootnodes for testnet?

https://docs.linea.build/developers/guides/run-a-node/bootnodes

[andreclaro]

Our node is still unable to find peers...

[andreclaro]

The node was able to recovered by itself.

Anyway, support asked me to try to change sync-mode from FAST to SNAP and "If it works, I believe the issue was that your node already had some blockchain data stored locally, which prevented FAST sync from being enabled — it fell back to full sync. You can either sync using SNAP or clear your local blockchain data then restart your node using FAST. " - I did not try this. I will give it a try if the issue happens again.