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Questions tagged [lighthouse]

Questions about the Lighthouse client specifically. Otherwise use the [clients] tag.

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Every couple of hours, my node desyncs

For some reason, every couple of hours when I check on my node, my Geth log files show 'Imported new potential chain segment,' and then once synced, it goes back to normal for a couple of hours. The ...
Creterine's user avatar
1 vote
0 answers
29 views

Force geth to periodically save state to disk

I'm running a geth node with lighthouse, and I'm having an issue where geth will periodically crash due to being out of memory. My system has 16 GB of RAM, and I'm not sure what the underlying issue ...
user6013's user avatar
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0 answers
115 views

Lighthouse Synced but Blocks Empty

I have setup geth and lighthouse on sepolia. Geth is fully synced and says Beacon client online, but no consensus updates received in a while. Please fix your beacon client to follow the chain! ...
kryptogeek's user avatar
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0 answers
28 views

Light node - setup an configuration

I am stacked with proper approach for deploying light node. Could some one tell me which combination clients (execution layer + consensus layer) do I need to use it for deploy light node on my ...
John's user avatar
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0 answers
19 views

How to perform a beacon deposit for a new validator in a Custom Testnet?

I am trying to add a validator to an already running testnet How can i make a beacon deposit, to allow that validator to start staking / validating blocks on the same testnet ? Help appreciated!
Muhammad Yasir's user avatar
1 vote
0 answers
37 views

How to activate a validator in a local testnet?

I am trying to add a validator to my local testnet, however the validator keeps giving the same message ( awaiting activation ); For context, the network topology is as follows; There are two ...
Muhammad Yasir's user avatar
0 votes
0 answers
92 views

Geth and Lighthouse peers are added, but none of them are downloading / importing blocks from peers?

i am trying to run a private PoS network on a private organizational network (all ips are accessible only if you're connected to organization's intranet ) I am using geth as Execution Client and ...
Muhammad Yasir's user avatar
0 votes
1 answer
33 views

How to discover enode addresses on local network (in private test network)

how i can broadcast a enode address to another physical machine on the same network, in geth take for example, this as my enode address: "enode://...
Muhammad Yasir's user avatar
1 vote
0 answers
289 views

How to run a PoS private network with geth & lighthouse?

So far for testing contracts, transactions and other dApp experiments I had worked with pre-established testnets (Rinkeby, Goerli etc) now i am tasked with deploying a private PoS network based on ...
Muhammad Yasir's user avatar
1 vote
0 answers
81 views

Ethereum Node, Lighthouse client error

I am synching Ethereum full node (Geth + Lighthouse). I got the following error CRIT Failed to start beacon node reason: Unable to open database: DBError { message: "Error { message: \"...
0xC6D0fF1e4's user avatar
2 votes
0 answers
163 views

Generate consensus layer configuration for private post-merge Ethereum network

I want to deploy a private post-merge Ethereum network (i.e. a network that merges right from the genesis). For the execution layer, I created a genesis.json file with the appropriate parameters and I ...
Bastien Faivre's user avatar
1 vote
0 answers
129 views

Is Beacon Node Consensus Client Lighthouse a buggy? Unreasonable for anyone to get CheckPointSyncURL who just start and decide to install full node

I have tried to sync full Ethereum node for 3+ weeks. Tried with 4 VPS servers and when I am gonna sync lighthouse and Geth simulatenously, it was working well. But after a few hours, lighthouse ...
DEFI Expert's user avatar
1 vote
1 answer
525 views

Beacon consensus client lighthouse syncing speed decrease every hour - might take 1+ month to sync fully

I am installing a full Ethereum node (for geth client only) in VPS Vultr. Last time, I tried 4 servers with different prices. Because its syncing speed seems very slow so I changed (upgraded with ...
DEFI Expert's user avatar
2 votes
1 answer
869 views

getting beacon node error after upgrading lighthouse client to v3.5.1

getting beacon node below error after upgrading lighthouse client to v3.5.1 from v3.3.0. CRIT Failed to start beacon node reason: Failed to build beacon chain: Error loading finalized ...
Hardik Desai's user avatar
1 vote
1 answer
604 views

Geth reports it is synced when Lighthouse Beacon is not synced

My lighthouse beacon node is still syncing, but if i go to the geth console to check if it is synced I get: eth.syncing false Is this normal behaviour? Or is my setup wrong? [ is there another ...
Will B's user avatar
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3 votes
1 answer
798 views

How do I expose and beacon chain API securely over HTTP and test my API works?

Ethereum beacon chain nodes (Lighthouse, Prysm, others) provide Beacon Chain API in the port 5052. How does one securely expose this API over Internet?
Mikko Ohtamaa's user avatar
3 votes
1 answer
842 views

GoEthereum and Lighthouse syncing issue: CRIT Failed to update execution head

I am running an Ethereum node using GoEthereum and Lighthouse. For some reason, it has fallen off from the chain tip and does not properly sync anymore. Lighthouse is reporting in its logs: Jan 11 13:...
Mikko Ohtamaa's user avatar
1 vote
0 answers
269 views

How to apply pos for private geth network using Prysm/Lighthouse?

I'm currently running my own private geth network. Can I use lighthouse or prysm with it to apply pos? I tried for example, lighthouse \ --network mydomain.com \ but error... it only has [...
user6894661's user avatar
0 votes
0 answers
81 views

How can i sync blockhain of two localnodes?

i'm new to ethereum. I ran two local nodes from the same genesis. One node has a blockchain filled with data, the other is just empty, I wanted to synchronize them for learning purposes. After I added ...
Twep _'s user avatar
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1 vote
0 answers
46 views

Why does my Geth full node stop working when it is out of sync?

I am using geth (with Lighthouse as consensus client) to work on the Göerli testnet Whenever i am trying to use the localhost RPC (127.0.0.1) or the IPC in my dApp, if my node is a few blocks behind ( ...
Muhammad Yasir's user avatar
1 vote
2 answers
2k views

Ethereum Post-Merge Full Node

I am trying to run a full mainnet node on AWS EC2. I received the following warning WARN [09-29|12:33:51.514] Post-merge network, but no beacon client was seen. Please launch one to follow the chain!, ...
Emrah's user avatar
  • 1,654
4 votes
3 answers
4k views

Checkpoint sync source for Ethereum beacon chain node

Ethereum beacon chain nodes like Lighthouse and Prysm offer checkpoint sync to get the node synced faster. How can I get a node that I can pass as --checkpoint-sync-url to lighthouse so that I can ...
Mikko Ohtamaa's user avatar
4 votes
1 answer
3k views

Ethereum beacon chain node (Lighthouse) fails to connect to GoEthereum

Ethereum beacon chain node (e.g. Lighthouse) fails to connect to GoEthereum execution layer node with the error seen in GoEthereum logs: the method engine_exchangeTransitionConfigurationV1 does not ...
Mikko Ohtamaa's user avatar
1 vote
0 answers
746 views

Lighthouse - UPnP not available

I'm running Lighthouse beacon chain on Ubuntu and get UPnP not available on startup. What is this dependent on? Is this some OS configuration? How to turn UPnP on?
Martin Massera's user avatar
1 vote
1 answer
275 views

lighthouse + localhost geth - why "sync can take longer when using remote eth1 nodes"?

I have geth alongside lighthouse on the same computer. I'm running lighthouse with --eth1-endpoints http://localhost:8545. However this appears in my ligthouse logs: sync can take longer when using ...
Martin Massera's user avatar
1 vote
0 answers
23 views

How safe to run Lighthouse without --auto-register vs. the effects of registering more than once?

Running a Lighthouse validator presents a message to strongly consider running --auto-register the first time. The documentation also states: The --auto-register flag registers your signing key ...
eth's user avatar
  • 85.9k
3 votes
1 answer
75 views

What caused the forks in the Schlesi testnet?

The Schlesi testnet was the first multiclient testnet for ETH2 clients. Lighthouse, Prysm, Teku were in consensus before it forked. What were the causes of the forks? Is there a technical post ...
eth's user avatar
  • 85.9k
2 votes
1 answer
181 views

What is the tech stack behind the Lighthouse client?

What are Lighthouse's major components? What databases did it consider and decide on? Are there elements in its architecture that are particularly differentiated from how other beacon chain clients ...
eth's user avatar
  • 85.9k