Questions tagged [poa]
POA stands for proof of authority . This tag will be used for question related to POA/POA network
87
questions
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8 views
What are the risques to considered of PoA in production mod [Geth]?
We are using poa clique with period = 0, and we will pass to production soon, so what are the risques to considered in prod mod ? is there a best practices checklist?
0
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0answers
7 views
How Geth classify transaction as local or non-local? txpool validateTx skips gasPrice validation for local transactions
I see geth code skips the validation of the local transactions
https://github.com/ethereum/go-ethereum/blob/master/core/tx_pool.go#L528
// Drop non-local transactions under our own minimal accepted ...
2
votes
1answer
18 views
How use SSL between geth nodes communication?
I have a poa network contains 4 nodes, I want to secure the communication between those nodes, is it possible using SSL and reverse proxy ?
1
vote
0answers
18 views
What is the scalability limit for POA Ethereum (number of nodes)?
Tried to find any benchmarks what is the maximum number of nodes for Ethereum PoA network.
When network latency becomes crucial? Looking for any sources / empirical benchmarks.
0
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0answers
10 views
Geth stuck on “Head state missing, repairing chain”
Geth crashed on lack of disk space, and now is stuck on "Head state missing, repairing chain" on a POA chain.
Max verbosity doesn't give anything, nothing, nada, and because it has not recovered, ...
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0answers
19 views
Facing issue while setting up private ethereum POA :
Which folder to save the genesis specs into? (default = current)
Will create clique.json, clique-aleth.json, clique-harmony.json, clique-parity.json
genesis.json
INFO [06-20|15:29:21.189] Saved ...
0
votes
1answer
31 views
Parity POA Smart Contract Method Always Fails
I have set up a private POA Network according to the tutorial from the parity homepage. I have two nodes running on localhost:8540 and localhost:8541. I have connected MetaMask to my first node and am ...
0
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0answers
22 views
Send transactions from any address (account) to a private ethreum network (PoA)
I am trying to send a transaction to a private Ethereum network (PoA) using an arbitrary address. However, the network is not accepting transactions from that address. Are there any method to unlock ...
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0answers
16 views
When enabling Clique consensus, I get status 0x0 Transaction mined but execution failed
When enabling Clique consensus and try to deploy a contract using Remix, I obtain this error;
status: 0x0 Transaction mined but execution failed
Any idea?
FYI, I am creating a private network ...
0
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0answers
22 views
How to backup and restore txpool data?
I'm using Geth to create a PoA Clique based private blockchain. I'm currently facing this problem and I'm looking for ways to backup and restore txpool data.
From the problematic node, this is my ...
0
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0answers
21 views
Proof of Authority identification and verification?
Exactly what documents are asked for being a validator and how is the validator identity verified?
0
votes
1answer
20 views
Accounts with ether cannot execute transaction on private chain
According to Metamask my accounts have ether, one account can submit transactions and have them be executed by the network, the other two have their transactions left as Submitted transaction.
Note, ...
0
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0answers
49 views
Correct way to handle sent signed transaction on ethereum poa network
Hi I’m having issues with sending multiple transactions to an ethereum proof of authority node(network) on azure. To clarify what I mean. I created an api service, using expressjs and node. Its meant ...
0
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2answers
24 views
does we need 6 blocks confirmation using ethereum poa network?
when working with poa ethereum network, does we need to wait 6 blocks to be confirmed?
I am implmenting a private network, and I want to know if is it possible to has a fork inside the chain
0
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0answers
35 views
PoA chain not processing transaction
I am using Clique and have set period:0 in the genesis.json file.
When I migrate --reset there is no problem in sealing new blocks; but, when I submit a transaction from my frontend through metamask, ...
0
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0answers
45 views
PoA network not mining
I have set up my PoA network using Puppeth, my two nodes are peering. They are receiving transactions, I can tell that since eth.getBlock("pending").transactions.length > 0. eth.mining == true. But ...
3
votes
0answers
196 views
Header broke chain ancestry, Synchronisation failed, dropping peer & retrieved hash chain is invalid
System information
Geth version:
Geth
Version: 1.8.22-stable
Git Commit: 7fa3509e2eaf1a4ebc12344590e5699406690f15
Architecture: arm
Protocol Versions: [63 62]
Network Id: 1
Go Version: go1.11.5
...
1
vote
0answers
55 views
Is it possible to set miner reward on Geth clique?
I have a private network set up with ethereum & PoA clique consensus.
Using in geth client
miner.setEtherbase(eth.coinbase)
on miner nodes, doesn't seems to work.
Inspecting in block explorer ...
0
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0answers
70 views
How to set sealers in extradata genesis block in PoA?
Which is the sintaxis to set up the sealers in extradata field?
This is an example:
"extraData": "...
0
votes
0answers
37 views
Decline a transaction in a PoA network
Is it possible to decline a transaction in a PoA network? Or to say it in other words: Can a sealer decline to put a transaction into a block he is going to mine?
I want to prevent transactions to be ...
4
votes
0answers
82 views
Error trying to synchronize geth clique client after shutdown
I'm working with a private network using geth clique clients. Each time a node shut downs, (after a power cut, or just killing the geth process), if a try to put it to work again, the node can't ...
1
vote
0answers
22 views
Clique - too few transaction inside a limited block
i have got the problem that my private node doesn't put all transactions that would be possible inside a block.
Concret i am running a private poa node which should have a fixed blocksize. Therefore ...
1
vote
0answers
78 views
Difference of parity PoA between Validator Sets and Aura?
It seems there are two PoA consensus algorithms in parity PoA. What is the difference between Validator Sets and Aura?
2
votes
1answer
224 views
Is gas burned in a PoA network?
I read in another thread that since sealer nodes don't get rewards, the gas spent in the network is burned and doesn't go to anyone.
However to limit spam, there needs to be a non-zero gas price. Do ...
0
votes
0answers
158 views
Estimate gas limit without eth_estimateGas method
POA Network (Ethereum Like) blockchain has eth_estimateGas to estimate gas limit but this method does not work in POA Network Sokol (Testnet) blockchain. When i call this method it gives response:
{
...
0
votes
1answer
96 views
POA chain: intrinsic gas too low, contract deployment
I'm trying to deploy my smart contract to a private proof of authority chain with geth, but i always get the following error message intrinsic gas too low
This is the JSON RPC request i'm sending. ...
0
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0answers
73 views
How to prevent DDOS in ethereum using PoA?
Using clique, how to prevent DDOS attack? Is there a way to set a whitelist of nodes which can send transactions, and blacklist all the others?
0
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0answers
97 views
Transactions always fails on POA sokol testnet blockchain
POA Sokol is a ethereum like testnet blockchain. I am using ether.js to make a contract call . The eth_estimateGas method in testnet gives this response but works in mainet:
{
"jsonrpc": "2.0",
...
0
votes
2answers
75 views
How to backup POA based ethereum private blockchain and restore it in a fresh new environment
Is there a way to backup the POA based ethereum private block-chain [created from microsoft azure POA template] and also restore it in a all new environment with out loosing any transactions & ...
0
votes
1answer
37 views
Configuring a new ethereum network, using geth and PoA as consensus
I am trying to create a PoA private network using geth but I didn't find a good guide lines especially with the PoA addition. I couldn't get a definition and examples of the genesis block ...
1
vote
1answer
184 views
Clique PoA Private Blockchain: Need Suggestion for Block Gas Target and Block Gas Limit
I'm following this article to create my own PoA private blockchain.
Now I'm stucked at this section after number 13:
I've checked the Puppeth source code and Geth CLI docs, but I'm still not quite ...
2
votes
0answers
253 views
Puppeth: No ethstats server configured
Update
This is an issue with Docker Compose >= 1.23.0 and I've raised this in the go-ethereum GitHub issues tracker.
I'm following this guide to create my own private blockchain using PoA consensus.
...
2
votes
0answers
57 views
PoA throughput with multiple nodes
Will it be faster for my system, in terms of number of transactions per second, if my network has a lot of nodes?
Does the number of nodes in PoA is related to the throughput?
Particularly I am ...
0
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0answers
378 views
Deploy Contract with truffle on Private Network using Parity
First I followed this demo PoA tutorial to build a private PoA network using Parity.
Then I wanted to use truffle to compile and deploy a smart contract.
I tested the deployment using ganache test ...
1
vote
1answer
132 views
Parity PoA step duration
I’m setting up a private blockchain using parity. I need to use PoA consensus with the maximum throughput possible.
What do you recommend to set the stepDuration value to? Can we set it to a very low ...
3
votes
1answer
149 views
How to configure the sealer account for a private Clique PoA network in Pantheon
Pantheon is the new Java-based Ethereum node targeting the enterprise setups.
I am trying to get my geth clique private network running on pantheon, but since pantheon has no account management, I am ...
0
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0answers
130 views
Setup Parity PoA network compatible with truffle framework deployment mechanizm
The question from the title kind of wraps around the real problem but it is actually what I'm having trouble making work. I'm trying to setup production PoA network so using all the flags made for ...
0
votes
2answers
187 views
Can we use Proof of Authority on private mainnet?
I am trying to figure out a way to use consensus algorithm on a private blockchain network, preferably ethereum. came across many suggestions. One of the suggestions which stuck was using PoA on ...
2
votes
1answer
160 views
Try running MyCrypto with my local parity nodes?
i want connect my local parity nodes with Mycrypto i flowed this tutorial to built my two nodes https://wiki.parity.io/Demo-PoA-tutorial.html
than i try to flow this tutorial to connect it to Mycrypto ...
3
votes
2answers
225 views
Proof of Authority or PBFT
I want to choose a consensus algorithm for permissioned blockchain in healthcare. I know PoA and PBFT are good choices, but I want to know which one is better?
Thanks...
5
votes
1answer
249 views
What number of confirmations is considered secure for Geth PoA Clique?
In Ethereum PoW the recommendation is to wait for 12 confirmations at least.
[Q]: What rules to apply for Geth PoA Clique algorithm?
My best guess so far:
lower limit: sum of confirmation block ...
0
votes
1answer
65 views
Validator stuck in Pending State
I am working with a kovan validator set for a POA network. When I try to add validator, I make the Initiate Change call and it goes through. Validator goes to pending state. When I make the Finalize ...
0
votes
1answer
164 views
Geth PoA Clique and Chain Forks
In PoW, in the case of a chain fork, the client will continue on the chain with the most work on it.
In Geth PoA Clique, forks still can ocur, since Sealers are racing against each other in sealing ...
0
votes
2answers
330 views
Geth PoA Clique and 100% transaction finality
In Bitcoin and Ethereum PoW, we have probabilistic BFT. I.e., the transaction finality will never reach 100%, but it will be very close to that with every further confirmation.
How about Geth POA ...
1
vote
0answers
51 views
go-ethereum POA with clique - issue with add new signers when all old signers are removed
I have setup a POA network with Clique consensus on azure. Due to some issue all the signer vms got deleted and we have no more signers and only normal geth nodes.
So i tried updating the geth nodes ...
3
votes
0answers
191 views
Unable to Add 3rd Proof-of-Authority Sealer Node
I have a geth POA private blockchain setup and running with 2 sealer nodes. Now I have setup a 3rd node as a sealer, and ran the following command on the both existing sealer nodes
clique.propose("...
1
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0answers
202 views
geth keeps quitting
I am running a geth node in a docker container for a POA private blockchain. The version of geth is Geth/v1.8.14-unstable-35fcd2f4/linux-amd64/go1.10.3. It is started using the command
--networkid ...
1
vote
0answers
34 views
PoA (like rinkeby) safer to generate random number (RNG) this function than POW/POS?
How can I securely generate a random number in my smart contract?
I heard that a block of random function results can be dropped by a malicious miner. Can POA prevent this?
0
votes
1answer
175 views
What is the purpose of non-mining sealer nodes in clique POA private ethereum network with respect to the clique consensus
I did setup a private POA ethereum network with 4 nodes with 3 of them mining . I went on to try a lot of combinations with some miners and sealers and reached to a conclusion that every miner hash to ...
1
vote
1answer
101 views
Can race conditions occur in PoA network?
I have the following contract deployed on my PoA network with two sealers, node1 and node2.
Let's assume a user, user1, submits a transaction with call to process() method to node1 and another user, ...
