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Questions tagged [validators]

For questions regarding Validator Nodes on the Stellar Network.

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49 votes
3 answers
10k views

What is the incentive to run a Stellar node?

In bitcoin, miners are rewarded by minting new coins. What's the incentive to do so in Stellar?
FuzzyAmi's user avatar
  • 1,581
23 votes
2 answers
2k views

How big is the ledger?

The public ledger adds a new entry every 3-5 seconds. So I am worried it might grow too big for normal users to run a node. How big is the current ledger and how much is it expected to grow each year?
Mike D's user avatar
  • 403
11 votes
2 answers
366 views

How much bandwidth does a running validator use?

I know running a validator currently requires upwards of 20 GB of disk space. How about bandwidth?
Eric's user avatar
  • 213
8 votes
1 answer
142 views

How to become a "Verified entity" on Stellar Dashboard?

A number of nodes appear as "verified entity" in the Featured live network nodes section on https://dashboard.stellar.org/. Who is verifying and what are the requirements to be listed as "verified"?
Almaxia's user avatar
  • 443
8 votes
2 answers
300 views

How to resolve node hanging when downloading history?

I'm basically following this tutorial https://galactictalk.org/d/20-setting-up-stellar-core-on-centos-7 but on ubuntu and my node is giving the following errors: Mar 26 18:14:45 stellar-node stellar-...
tlnagy's user avatar
  • 213
6 votes
2 answers
828 views

Hardware/OS Requirements/Recommendations for running a Full Validator Node

What would be the recommended hardware specs for a dedicated Full Validator Node server? I read here (How big is the ledger?) that I can currently expect ~60GB disk space used by the core and ...
marcinx's user avatar
  • 586
6 votes
1 answer
294 views

aws architecture recommendations for stellar

Most of the documentation seems to be about running a single server. However, I'm wondering if it makes more sense to have a shared DB (e.g. RDS) and multiple application servers that use that. I'd ...
Jilles van Gurp's user avatar
6 votes
2 answers
337 views

Core full catchup time to completion

So our c5.xlarge instance in AWS is processing about 1k checkpoints per day on average. With somewhere around 275068 checkpoints, it would take around 275 days to complete the full sync. Now the rate ...
Christian Haynes's user avatar
6 votes
1 answer
123 views

How are changes in the stellar protocol implemented?

Recently there was a lowering of the base fee from 10 to 0.5 lumens. Typically in a blockchain such a change would require a hard fork. How did all the validators agree to accept the new limit? Did ...
Mike D's user avatar
  • 403
5 votes
1 answer
151 views

Difference between full & basic validators

I'm not clear on the differences between full validators and basic validators on a network. Taken from official doc, it seems like the differences are mostly an abstraction, with full validators being ...
B.Li's user avatar
  • 649
5 votes
1 answer
1k views

Stellar Horizon not synchronizing

Background: Using satoshipay/stellar-horizon:0.11.1 for Horizon Stellar Core seems to be running. Based on logs, we get the latest sequence number and ledger: 2018-04-18T10:31:32.695 GDYMW [Ledger ...
Ace Subido's user avatar
5 votes
1 answer
132 views

How can a validator node earn trust on the network?

It's my understanding the SCP achieves consensus by having validator nodes agree with other validator nodes that they trust. Anyone can become a validator node, but won't they not actually be ...
AGitzes's user avatar
  • 440
5 votes
0 answers
96 views

Stellar-Core won't sync anymore: "Replay failed: mismatched ledger hash"

Stellar-core was running smoothly, then crashed without log entries. Node now fails to catch-up and sync. Logs are complaining about a mismatched ledger hash and I am stuck in an endless loop of ...
marcinx's user avatar
  • 586
4 votes
2 answers
409 views

Why is my node not validating?

I am seeing plenty of these warnings while my node is catching up with CATCHUP_COMPLETE. 2018-10-27T09:32:08.197 GADLA [Herder INFO] Quorum information for 20686064 : {"agree":18,"disagree":0,"...
marcinx's user avatar
  • 586
4 votes
1 answer
112 views

When do validators know to push the data from the latest ledger to archive nodes?

As Validators agree on the latest transaction sets to apply to the ledger when do they know to update the data being stored in the archive nodes? Is it based on the owner of an archive node listening ...
Brutus123's user avatar
  • 455
4 votes
1 answer
189 views

SQL Database and Stellar Ledger State

Browsing through src code, saw below line in https://github.com/stellar/stellar-core/tree/master/src/database: The Database object manages connections to an SQL database, in which the current ...
selvan's user avatar
  • 141
4 votes
2 answers
268 views

Should Every Node Contain The Same Quorum Set Configuration?

Suppose I want to set up four nodes: A, B, C, D. I want A to trust B, and C to trust D, so the set is denoted by {{A, b}, {C, D}}. I want to set up a situation where either one of these sets can vote ...
Munawar's user avatar
  • 157
4 votes
2 answers
477 views

How to configure the quorum set when some non-SDF nodes are not validating?

After checking that my stellar-core node was hanging with status Joining SCP, and seeing in the debug messages that the SCP was receiving all the envelopes normally, I realized that the problem was ...
matheusb.comp's user avatar
3 votes
1 answer
58 views

How do I ensure that validator maintenance is safe for the overall network?

In the event of applying security patches, system upgrades, etc., how do I ensure the validators that depend on mine will not be affected when I have to turn off my validator?
Lilynut's user avatar
  • 491
3 votes
0 answers
30 views

How does Stellar-Core handle multiple archives in a secure manner?

For a stellar code, if a node is configured with multiple history archives for reading, presumably from sources of different nodes. How does this node handle discrepancies between the historical data? ...
B.Li's user avatar
  • 649
3 votes
1 answer
321 views

What are the good configurations for having a running cluster of 3 nodes?

I am trying to set up a private stellar cluster with at least 3 nodes. I am able to setup a 2-nodes cluster but when it comes to add another node, the cluster is broken and only one node is synced. ...
Parker's user avatar
  • 31
2 votes
1 answer
144 views

How do I set up a full validator on the test network

I am trying to learn about Stellar-core by configuring a full validator on the test network. Using sample configs and input from this post, my config looks like: BUCKET_DIR_PATH="/var/lib/stellar-...
NickH's user avatar
  • 31
2 votes
1 answer
65 views

Why is validator inactive on Stellarbeat despite logs showing validation activity?

I am trying to run a validator, and have configured it accordingly. I am running version 12.4 on an Ubuntu machine, which I installed using the stellar-core-postgres packages. According to stellar-...
cndolo's user avatar
  • 33
1 vote
2 answers
246 views

How are Stellar transactions distributed to validators?

When I submit a transaction and post it to a Horizon endpoint what process determines which validator will handle the transaction? Do client apps have any visibility or control over this?
Ross Bates's user avatar
1 vote
0 answers
24 views

Stellar horizon shows "Still Ingesting" after 5 days

I am running stellar-horizon on ec2 server I cloned stellar-core from git clone https://github.com/stellar/stellar-core.git and installed it. I installed horizon from the package manager with the ...
sqrl's user avatar
  • 11
1 vote
0 answers
19 views

Stellar Validator Discovery

I'm setting up a Stellar network of 3 validator nodes in AWS EC2 instances. I use a private networkPassphrase ('MyOwnNetwork') (intentionally). key entries of stellar-core.cfg: RUN_STANDALONE=false ...
Sudhakar's user avatar
1 vote
0 answers
43 views

Stellar validator node quorumset not reaching threshold

I deployed a full validator node and it was 100% validating for a few months. A few days ago I check it's status on stellar beats and I saw this error Node not validating: quorum set not reaching ...
taraf's user avatar
  • 131
1 vote
0 answers
121 views

How should one decide how many and which nodes to select in the quorum set when configuring a Stellar Core Node

How should one decide how many and which nodes to select in the quorum set when configuring a Stellar Core Node (in archiver mode)? There is a list of validators in the link below, should all or some ...
John Murphy's user avatar
0 votes
1 answer
33 views

Linking 3 Validator nodes - Javascript SDK

I'm attempting to ling 3 validator nodes - with the objective of becoming a Full Validator. I'm performing this operation based on the Link Validator requirements as described on https://github.com/...
Magick's user avatar
  • 103
0 votes
1 answer
271 views

How to configure Full Validator node?

The docs state to set the validator env var, which I did, but how do I specify that I want to run a full validator and not just a basic one? NODE_IS_VALIDATOR=true What other settings are required? ...
relik's user avatar
  • 315
0 votes
1 answer
90 views

Stellar validator node

My question is about running a stellar validator node. Why Starting stellar-core in FORCE_SCP mode requires NODE_IS_VALIDATOR to be set?
Minhaj Shakeel's user avatar
0 votes
2 answers
233 views

Stellar Validators, Transaction fees, Inflation fees.

I've been trying to find some answer in regards to the following questions. Hope someone can help me. Because I was able to find the only unnecessary answer in regards to my questions; Why would ...
Ali's user avatar
  • 1