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Questions tagged [stellar-core]

stellar-core is the backbone of the Stellar network. It maintains a local copy of the ledger, communicating and staying in sync with other instances of stellar-core on the network.

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stellar-core throws an error while verifying checkpoint after downloading all the ledger file

I was trying to run stellar-core node in EC2 instance. I did all the required configuration as described in docs and after starting the node it downloaded all the ledger file and started verifying ...
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How to create a Private Stellar Blockchain with 4 nodes, each node is an ec2 instance?

I am a beginner, so please provide as much information as possible, even the most basic ones I need to know. I want to setup a private Stellar Blockchain and I want to have 4 nodes in the network, ...
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Stellar-core failing to initialize history archives to S3

My archive setups are configured like this: [HISTORY.v1] get="aws s3 cp s3://my-bucket/v1/{0} {1}" put="aws s3 cp {0} s3://my-bucket/v1/{1}" [HISTORY.v2] get="aws s3 cp s3://my-bucket/v2/{0} {1}" [...
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1answer
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What are the differences between Ripple and Stellar addresses

What are the differences between Ripple and Stellar public/private key pairs? I understand the cryptography and libraries that Ripple and Stellar use are quite similar, but are they practically ...
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How to create my own operations

I'm looking to alter stellar-core for my project, which deals less with financial transactions and more with data storage. I want to essentally rip out some of the operations such as allowTrust and ...
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1answer
18 views

How to changing port on stellarterm?

I installed Stellar term on my own server but the default port is 3001 and i want to change that, How can i change the ports in my own Stellar term?
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1answer
17 views

error accessing path: buckets/tmp

Two days after installing stellar-core, when I run ./stellar-core, I had this error: Got an exception: error accessing path: buckets/tmp [main.cpp:671] How can i handle it?
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3answers
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Stellar all address has no data

Hi i was using stellar test account. It was working fine but suddenly showing no data in any related account to a asset issuer. is there any limit for using test network ? I have created a issuer and ...
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1answer
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Stellar Core from Source vs. Stellar Core from Container

Are there any vulnerabilities or security considerations I should be aware of with running Stellar Core from source as opposed to running it from the Docker Container?
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1answer
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How to be a Stellar Anchor?

There is currently not much info about this. I want to provide the ability to exchange for XLM using the local fiat currency I am at.
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24 views

Best practices for Stellar core settings KNOWN_PEERS, PREFERRED_PEERS and PREFERRED_PEER_KEYS

What are the best practices for settings KNOWN_PEERS, PREFERRED_PEERS and PREFERRED_PEER_KEYS in the Stellar Core config? Under which circumstances would I use which? From https://www.stellar.org/...
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43 views

What is a trigger ledger?

While my node is catching up with the rest of the nodes, I see this in stellar-core -c info: "status" : [ "Catching up: Waiting for trigger ledger: 20194405/20194433, ETA: 140s", "Publishing ...
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History buckets not found in history.stellar.org

After update to stellar-core 10.0.0rc4 I got history issue. Synchronization is stuck. Here is errors: 2018-09-14T14:08:36.090 GCUCN [default INFO] Loading last known ledger 2018-09-14T14:10:19....
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1answer
41 views

Stellar standalone and network fees

I am building a non-financial app using Stellar. Basically the app is going to transfer assets between accounts. So I want to run a few standalone nodes under same (private) network. As far as I ...
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Dropping peer, but peer seems to be fine

In Stellar Core 10.0.0, I keep seeing log entries like this: I 2018-09-25T03:35:16.416 GBCS2 [Overlay INFO] New connected peer 52.55.85.153:11625 I 2018-09-25T03:35:16.516 GBCS2 [Overlay INFO] ...
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2answers
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Stellar Core node is typically behind SDF by 20 to 100 ledgers

I'm attempting to synch Stellar core (v10.0.0) and most of the time, it is behind https://horizon.stellar.org/ by 20 to 100 ledgers. To make sure it's not just horizon that's lagging, I check the ...
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What does this mean: “Ledger N (hash) closed and could NOT be fully validated by validator”

I see messages like this in the logs of Stellar Core: Ledger 20144734 (da1765) closed and could NOT be fully validated by validator What does this mean? Not sure if it matters, but the core node is ...
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Docker image installation private network detailed instructions

I am able to install a stand alone network on an aws ec2 instance with the command docker run --rm -it -p "8000:8000" -v "/home/scott/stellar:/opt/stellar" --name stellar stellar/quickstart --...
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28 views

Can't continue stellar-core sync. Stuck in Joining SCP

I'm in the middle process of stellar-core sync, but I need to restart my server for some reason so I stopped the stellar-core sync. Then when I continue the sync process I keep getting this message: ...
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1answer
24 views

Stellar Java SDK: Retrieve Account Data

I can see how to add data to an account using ManageDataOperation. But is there a way to retrieve the same data using the Java SDK? I fund a JS example: https://www.reddit.com/r/Stellar/comments/...
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Stellar-core performance and resource usage

I plan to run my own private network with completely different use cases compared to the traditional financial service use case. Essentially, I plan to run a decentralized network for securing ...
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1answer
48 views

Is it possible to set up a virtual machine(like evm for smart contracts ) using stellar consensus protocol?

What could be the challenges associated with something like this?
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53 views

Using Stellar for a non-financial private network

I'm new to Stellar and this community. I want to create a decentralized network for information sharing. Essentially a distributed database with data validation using blockchain. I have looked into ...
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52 views

Where should the stellar-core root account seed be stored?

Should the root account seed from stellar-core be stored in the stellar-core config? After upgrading to the latest version of stellar-core, I'm not able to find the transactions related to the ...
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1answer
65 views

Core breaks after upgrade to 10.0.0

After upgrading both Horizon and Core to new stable versions, I can no longer get stellar-core to start. before: ENV STELLAR_CORE_VERSION 9.2.0-551-7561c1d5 ENV HORIZON_VERSION 0.13.1 after: ENV ...
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Retrieving operations for a transaction unexpectedly slow?

I am trying to retrieve the operations for the transactions of a given ledger. First retrieve the transactions: List<TransactionResponse> transactionResponses = this.server.horizonServer() ...
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How to resolve 500 Internal Server Error on /transactions/<hash>/operations?

My node returns an error when I query the /operations endpoint in horizon. curl http://127.0.0.1:8000/transactions/73ce2618095d2c17bdaf08a6a6617cef549f974b1619f03b84eb46747e5e4eb0/operations { "...
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1answer
66 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 ...
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2answers
120 views

Catching up stellar-core ledger can't be synched

I keep getting this error after the initial download of ledger files has caught up. After this error, it attempts to re-download the ledger files. 2018-08-27T13:04:12.199 GDU4N [History ERROR] ...
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2answers
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What is the syntax of the 'tx' (transaction) command, to execute a transaction?

So using docker I started a private Stellar Network by typing in the below command: docker run --rm -it -p "8000:8000" --name stellar stellar/quickstart --standalone Then I opened another terminal ...
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1answer
89 views

Can we encrypt stellar memo text with receiver's public key and sender's private key?

I was trying to figure out a way to encrypt a small payload in a transaction memo to anonymize the memo id without having to store anything on the server. So can anyone help me to encrypt the memo ...
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How to implement Stellar Path Payments?

I have implemented my stellar path payments with the following parameters, but it continuously fails with an error of "Invalid parameter" . These are my parameters "source": "destination": ...
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87 views

A complete catchup of the testnet keeps failing on verifying ledger

Trying to perform a full sync on the Stellar testnet using a recent dockerized stellar/quickstart in persistent mode (horizon: v0.13.1, core: v9.2.0, docker: v18.06.0-ce). After around 10 hours the ...
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1answer
46 views

Upgrading core protocol version (docker quickstart, standalone)

I built the v10 docker image and launched it exposing the HTTP port for core. docker build -f Dockerfile.testing -t stellar:v10 . docker run --rm -it -p "5432:5432" -p "8000:8000" -p "11626:11626" \ ...
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1answer
61 views

Is it possible to submit transactions to Stellar Core directly without Horizon?

Is it possible to submit transactions to Stellar Core directly without Horizon? Or do you need to use Horizon for all interactions with the Stellar network?
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Can anyone make BiFrost working or leave Stellar as the ICO platform? [closed]

We've hired multiple developers and there's really nobody who can make BiFrost working! Actually we've wasted so much time and money on this that we've decided not to make Stellar as our ICO platform. ...
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1answer
50 views

How does the Stellar protocol ensure a network doesn't have disjoint quorums?

Does Stellar maintain a set of nodes to achieve quorum intersection? If not, how can a Stellar network achieve quorum intersection at all times, meaning no disjoint quorums at all in the network?
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Lost ledger data: what is the proper way to shutdown and restart a node?

I had to restart Docker Engine, and I stopped the services by attaching to the container and issuing ctrl+c. It was in the process of downloading ledger files, and I thought that it would pick up from ...
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1answer
35 views

How a new node trusts another node in the network

Let's assume that a new node joined in the network.As per the SCP how this new node trusts another node in the network? Does this happens by exchanging messages between other nodes in the network ? ...
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2answers
60 views

create a stellar application without installing stellar core in local system

I want to create a stellar application which will have these functionality Account creation XLM Balance checking Doing Transaction XLM Receive notification I have read stellar documenation https://...
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1answer
38 views

Pruning and keeping disk usage low

Does the Stellar network have the concept of pruning? If so, how do I go about configuring it? I am running a node for development purposes but don't want the database and disk usage to become larger ...
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Unresolved externals

I forked stellar core project and followed all the windows installation instructions. I am facing the following issue while building the project LNK2019 unresolved external symbol "public: static ...
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1answer
100 views

Testing Stellar for high volume of operations per second

I'm testing Stellar for a project where we want to be able to get ~4000 operations per second. Multiple sources ( including this question's answer: Scalability on Stellar network ) indicate that I ...
6
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1answer
161 views

Help - why can’t I synch stellar core?

I am using the latest packaged binaries for Ubuntu - and running Stellar core (not the quick start) - with a connection to a PostgreSQL database. Two questions - 1) How long does it typically take ...
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1answer
45 views

Effects of a stellar-core node running on too slow hardware?

What are the effects of running a stellar-core node on slow/weak hardware, e.g. not meeting stellar-core hw requirements? Does that create a problem for consensus? If so, are only those affected, ...
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3answers
93 views

How to get status of historical ledgers synced after setting CATCHUP_COMPLETE=true

I had problems getting the node to resync all past ledgers and had to start from scratch. I can see that stellar-core is writing ledgers to disk, but I'm not sure how to check the status of it, or ...
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1answer
26 views

Secured ways to check if a node is up working?

To monitor nodes' healthiness, there are tools for Bitcoin and Ethereum (e.g. https://github.com/cubedro/eth-net-intelligence-api). Some of them are tools that sends heartbeats representing an ...
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2answers
38 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 ...
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3answers
62 views

Stellar logs are getting bigger and bigger

Stellar logs are getting larger and larger. How do you get them to print log logs according to time rules
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2answers
44 views

How do I generate an xPub using stellar SDK?

How do I generate an xPub using stellar SDK ? could anyone show me the format of a stellar extended public key ?