Questions tagged [parachain-collator]
The parachain-collator tag has no usage guidance.
68
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Parachain not including all transactions from tx pool into block
Context
OriginTrail Parachain Mainnet is pushing significant amount of transactions (175k/day) - with tendency of growth
Collators are filling blocks up at ~25% of block weight, with a large pending ...
- 11
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0
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16
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Did validators reject my parachain candidate or not recieve it at all?
I'm running a local network based on rococo-local with two relay chain validators and a single collator on parachain 2000. I've set up the network according to the tutorial Part 1 relay chain and Part ...
- 1,105
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15
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Understanding the Concept of "Best Block" in Parachains, Relay Chains, and Solo Chains
I'm currently working to gain a deeper understanding of blockchain technologies, specifically in the context of parachains and relay chains, as well as solo chains. I'm having some confusion regarding ...
- 442
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17
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How many collators are selected at a time or we can say same block height to authorise a parachain block?
"I'm trying to understand the mechanics of parachain block authorization in blockchain networks like Polkadot and similar multi-chain systems. Specifically, I'd like to know:
How many collators ...
- 442
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41
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Parachain stuck at authoring runtime upgrade block
Our testnet parachain is stuck exactly at the block in which the runtime upgrade is authored. It was authorized and enacted via parachainSystem as recommended. The upgrade neither includes any ...
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29
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Parachain node frequently halted for and again start syncing
We setup polkadot parachain node for asset and node frequently halted for and again start syncing.
Dockr image - parity/polkadot-parachain:latest (docker hub)
here is the docker compose file
version: “...
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0
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28
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Moonbase parachain collator not producing blocks using zombienet
I am trying to run zombienet tests with 2 polkadot relay chain nodes and 1 parachain collator running the moonbeam binary. The test config is as follows: test.toml
[settings]
timeout = 1000
[...
- 11
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17
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Incorrect output of prometheus metrics
has anyone come across the fact that prometheus metrics from the collator and embedded relay chain return the official name - rococo_local_testnet, although the collator name in chainspec is ...
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20
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Collator starts after more than 10 hours on Azure cloud
I am migrating from AWS to Azure Cloud. I have two parachain collators running. One on AWS (yet to migrate) and another on Azure Cloud (migrated).
Whenever I restart the service on AWS, it hardly ...
- 101
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26
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Way to force a new Session when using pallet_session?
There are likely reasons for this, but I'm not sure what they are yet.
In a parachain using pallet_session, is there a way for sudo/root/governance to force a session to rotate faster/cut a session ...
- 433
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48
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Simulate block finalization error
I would like to simulate how our parachain reacts to events like,
A collator produces a block that is not accepted by other collators in that parachain. Aka a malicious collator.
The relay chain ...
- 107
5
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2
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153
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How does a parachain collator reliably know which parachain block (candidate recipt) got included on the relaychain to build the next block on?
I understand the entire path of a parachain block upto and including its candidateReciept being "included" on the relaychain, and its erasure coded PoVs being available with the relaychain ...
- 329
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1
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75
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How to fix slow parachain block time on rococo-local?
Hello valuable Substrate community,
I started two rococo-local relaychain validators and one custom parachain. The target block time of the parachain is 12 seconds, but the actual block time is 24 ...
- 503
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86
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How to run a collator node for a parachain in Docker?
I'm working through the Acquire a testnet slot tutorial and used the following command to spin up a collator node:
./target/release/parachain-template-node --collator \
--chain raw-parachain-...
- 11
3
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1
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20
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How we can assign any name to our collator?
Is it possible to give the name to the collator so that public can see that the particular collator is of which person or entity.
if yes. How we can do it?
- 1,896
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75
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revert option is not working
We are facing a returning "Too many sibling blocks inserted" error then all 4 collator nodes would stop block production. I did some research into the issue and one of the possible solution ...
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How many collators should a new parachain have if it doesn't have much load on it?
How many collators should a new parachain have if it doesn't have much load on it?
What should be the analysis criteria to decide how many collators we need for our product.
Can you share some ...
- 1,896
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37
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How to remove "--force-authoring"? Parachain development with multiple nodes
so I've followed all steps in the doc https://docs.substrate.io/tutorials/connect-relay-and-parachains/prepare-a-local-relay-chain/ .
But now I'd like to have more than just one collator/parachain ...
- 418
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119
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Can a parachain recover from a "block taking too long" error?
We have a parachain testnet running on a local relaychain based on rococo v2.
The Parachain is based on Cumulus (Polkadot and Substrate) v0.9.36 - so at the time of writing is the most up-to-date ...
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2
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163
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Sync a parachain node quickly
Is it possible to use a snapshot of the relay chain to synchronize a Substrate-based parachain and run a parachain node, as the process of synchronizing the relay chain can take a significant amount ...
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2
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139
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How can I connect my old Parachain to my new Relaychain?
How can I connect my old Parachain to my new Relaychain?
The first thing I did is to recreate the chainspec using export-state: (9062 is my last block)
./target/release/my-parachain export-state \
--...
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27
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Inclusion of Collator In Parachain Lease
I understand that allocating a collator node (or a few) to each chain w/a Parachain slot per era is overkill from a trust perspective. However, from a developer's perspective, it would reduce a ...
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17
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Polkadot fast sync mode not fast enough [duplicate]
I tried running a parachain, which requires syncing relaychain before syncing parachain. On quick exploration I found out there is a "fast" sync mode that speeds up the chain sync process ...
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71
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Are there any incentives for collators?
Collators create PoV blocks and provide them with candidate blocks from the parachian to the relay chain. So they don't do any of the block authoring since this is done by the validators.
But is there ...
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152
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Para header not found after moving to another relay chain
In one of our testnets, we moved the parachain (:= P) to another relay chain (:= R). Unfortunately, we have not been able to produce blocks after moving over. I think to have overseen/misinterpreted a ...
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123
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How can we start a node in warp sync mode?
Recently tried to run a collator node with --sync warp flags. The node exited with error "Warp sync enabled, but no warp sync provider configured". I was not able to find any more info on ...
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107
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How to use custom keys for parachain collator instead of predefined Alice or Bob?
There is example how to use Alice predefined account to run
./target/release/parachain-template-node \
--alice \
--collator \
--force-authoring \
--chain raw-parachain-chainspec.json \
--base-path /...
- 509
2
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2
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197
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ParaChain blocks are not producing and finalising with Relay chain ( when using with custom specs)
Hope you are doing well.
I would need your valuable insights on an issue. Currently I m facing a problem with para-chain(rococo-local) set-up locally with relay chain(rococo-local).
I have setup Relay-...
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26
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Issuing extrinsics Polkadot.JS/api using collatorSelection
I'm trying to utilize the Polkadot.JS api to query chain parameters and issue transactions under collatorSelection an example of which is:
const x = api.query.collatorSelection.candidates();
console....
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84
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Is there a way to start an archive node of a parachain using snapshots? How can we export/ import relaychain blocks?
Using export-blocks command we can export parachain blocks but when trying to export relay chain blocks we received error field RelaychainSpec not found. Is there a way to take snapshot of a parachain ...
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74
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production-like parachain setup and launch
I wanted to try out starting multple parachain node and not only one node-collator like in this documentation.
How can I remove the force-authoring successfully and have multiple nodes that uses the ...
- 418
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35
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How does a validator know that a given collator can author?
When a collator passes a PoV to a validator, how does the validator know that the node is a valid collator for a given parachain, and that they had permission to author a block in that slot?
- 2,925
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38
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How to restart network from parachain data that was left on the disk?
I am trying to restart our network using data left by previous collators. How do I apply that data to start a new ( or the same ) network without losing data? I am looking for a solution similar ...
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369
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Parachain doesn't produce blocks (collation wasn't advertised to any validator)
I am running a local testnet of a 2-validator-node polkadot Relay Chain (release-v0.9.27) and I am trying to connect a parachain-template to it (v0.9.27), with custom keys. The Relay Chain is working ...
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How to properly set session keys for Relay and Parachain with custom keys
The Goal:
Deploying a Relay Chain with Custom Validator Keys, that a Parachain can start collation successfully.
The Issue:
Using the key subcommand in the Relay, I wasn't able to properly insert the ...
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1
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303
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Parachain not syncing with peers
An instance is already running a parachain collator node and is producing block.
Is collating: yes
[Relaychain] 🏷 Local node identity is: 12D3KooWLhkaoFSGV2JfXea1BGTEAv2R5PE4v2b1nHZMo1ZGtXDG
[...
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42
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Migrating from short-term to long-term slot on Rococo
We had a temporary slot with para_id 3026 previously and wanted to request for long-term slot (now that we have launched on Kusama) with the matching 2119.
We thought the procedure is to:
generate ...
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1
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91
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New collators not producing blocks
I'm locally testing adding a new collator to two existing collators.
I managed to:
set the aura key,
ext.session.setKeys to set public key
rpc.author.insertKeys to set private key
add it to the ...
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1
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132
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Collator nodes are not working
I recently got a parachain ie, 4058 via subport issues request form
When I was starting my parachain-collator-template with the following command
./target/release/parachain-collator
--bob
--collator ...
- 95
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0
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88
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Collator not producing block
Changes made
In previous version things were fine. In this change, I added pallet-staking in the collator.
Here Staking is pallet_staking::{Pallet,...}
Configured pallet_staking with reference ( but ...
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53
views
Where to find the path for my relay chain when starting a parachain?
I'm trying to use this code to start a parachain (from this tutorial):
./target/release/parachain-collator \
--alice \
--collator \
--force-authoring \
--chain rococo-local-parachain-2000-raw.json \
--...
- 159
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43
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./target/release/parachain-collator not found
Following this tutorial.
I'm trying to run this command in the substrate-parachain-template folder (found here):
./target/release/parachain-collator build-spec --disable-default-bootnode > rococo-...
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2
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127
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How to use command line to register Parachain locally
Regarding this tutorial "Connect a local parachain": https://docs.substrate.io/tutorials/connect-other-chains/local-parachain/, it requires
using GUI in a browser to do Parachain ...
- 1,193
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78
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Is there any benchmarking tool for parachain collator node performance?
Like there is e.g. polkadot benchmark machine --chain kusama --verify-duration 60 for the relaychain, is there something similar for the parachains? If not maybe some custom tool for measuring ...
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361
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While running collator with our paraId having error
We were trying to run collator with our paraID registered on polkadot. We are able to connect with the same process on rococo test network. But while we are connecting with polkadot. It's throwing ...
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How to solve the error of 'Block invalid'
I'm facing this issue after starting parachain:
Note: I have changed the consensus mechanism from aura to nimbus(moonbeam use this).
Can anyone please help me to solve this issue ?
Thanks in advance !...
- 1,421
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199
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Relay chain argument error: Invalid input: Error parsing spec file: unknown field `relay_chain` at line 75 column 1
I Need to Connect to Local Parachain .
I did step by step every thing in this page : Substrate
in section Start a collator node i run this command :
./target/release/parachain-collator \
--alice \
--...
- 873
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72
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What is relaychain validator spec & collator spec
I was following these tutorial: start a local relay chain and connect a local parachain. Everything went fine.
Then next I tried to run another collator ( let's call this custom-parachain) binary ...
- 686
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2
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240
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How do relaychain, parachain, collators, validators work together
I always get confused and never got a clear picture of all these terms: parachain, relaychain, collators, validator, stand-alone node etc.
I can't figure out a way to understand connecting all these ...
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137
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purge-chain for local testnets requires rococo-native feature enabled
I completed the Connect a local parachain tutorial and during cleanup purge-chain for the collator node failed:
% ./target/release/parachain-collator purge-chain --base-path /tmp/parachain/alice
Error:...
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