ERROR block_updater # UpdateWatchdog.run failed

[jinpeng309]

I want to build a JKC Pool(https://github.com/Hartland/JKC) , but when I run the twisted get the error message like below:
2013-12-28 23:16:51,888 ERROR block_updater # UpdateWatchdog.run failed
Traceback (most recent call last):
File "/root/stratum-mining/lib/block_updater.py", line 49, in run
prevhash = util.reverse_hash((yield self.bitcoin_rpc.prevhash()))
Error: 500 Internal Server Error
My junkcoin.conf like below:

noirc=1
rpcuser=name
rpcpassword=123456
rpcallowip=*
port=19333
rpcport=9772
gen=0
4way=1

[ahmedbodi]

not sure on that if im honest
maybe @Hartland could give some ideas

[Hartland]

A few things off the top of my head:
Drop the noirc parameter. Without IRC you may not be connecting to any other nodes. This in itself could be the problem.
Also related, drop the port parameter. Why are you changing the P2P port? Again, this will stop you from connecting to any nodes. (Using a custom RPC port is ok)

rpcallowip=* is a security risk, you are basically telling the daemon to accept RPC connections from anybody-anywhere. If you need to use the rpcallowip parameter, restrict it a certain IP or network. For example: 192.168.1.*

Not quite sure what the "4way" parameter is for.

I believe you are getting the error because you are not connecting to anybody, let alone building the block chain.

Remove the noirc and port parameters and make sure you are downloading the blockchain.

[ahmedbodi]

thanks hartland, just wondering if this maybe linked into the issue from @Devianttwo

[jinpeng309]

Thank you for you help, the pool running well now. : )

[abweb]

Hi,

I have problem with stratum-mining for all currencys.

2014-01-07 10:11:16,477 ERROR block_updater # UpdateWatchdog.run failed
Traceback (most recent call last):
  File "/home/miner/bin/pools/lib/block_updater.py", line 47, in run
    prevhash = util.reverse_hash((yield self.bitcoin_rpc.prevhash()))
TimeoutError: User timeout caused connection failure.

[bonesoul]

@abweb found a solution?

[erm3nda]

I have a similar issue, but Error: 404 Not Found

@Hartland , by "I believe you are getting the error because you are not connecting to anybody, let alone building the block chain."
did you meant to addnodes?

I tried adding 2 nodes from supernodes.txt list, but didn't work.