Network Related Query

Question

I am trying to setup two nodes in a cloud environment. Both the system are able to perform telnet to each other. In the first system I created and initialized the chain which is listening in 5758 port number. From Node 2, I am not able to initialize multichain. I get the errors to check for firewall setting that if the other system is accepting connections. However I am able to telnet the port from node 2 to node 1.

Now I did another test, where I tried connecting multichain running in my local machine to Node 1. It worked. I did the same test from my local system to node B, it also worked (Created a new chain in Node 2).

Please let me know, what are the various aspects and networking config, I might have to check and modify in the systems. Both systems are running on UBUNTU.

Answer 1

A couple of ideas are to check the IP address you're connecting to from node 2 is the external one for node 1, and to ensure you are using recent versions of MultiChain on both nodes.

Comments

Thanks for the support. I have found the solution, Please check the new answer posted.

Answer 2

Dear Multichain,

I had checked the network and IP's and found that there is no issues related to networking and firewall. The biggest mistake I did was not to check the Multichain's chain log from the node I was trying to connect.

After looking at the log, I could see the application was able to establish connection but had faced some issue. It also had created a address. I took the address and granted send, receive and connect permission from the genesis node. I came back to the second node and tried connecting and it connected. The issue/bug was not that the console was not providing the related error.

I have mailed the details at your email address for your analysis.

Thanks,

Am pasting some part of the log below:

2016-09-06 12:21:19 MultiChain version build 1.0 alpha 23.1 protocol 10005 (2016-08-01 15:11:50 +0300)

2016-09-06 12:21:19 Using OpenSSL version OpenSSL 1.0.1h 5 Jun 2014

2016-09-06 12:21:19 Using BerkeleyDB version Berkeley DB 4.8.30: (April 9, 2010)

2016-09-06 12:21:19 Default data directory /home/krypc/.multichain/pf

2016-09-06 12:21:19 Using data directory /home/krypc/.multichain/pf

2016-09-06 12:21:19 Using config file /home/krypc/.multichain/pf/pf.conf

2016-09-06 12:21:19 Using at most 125 connections (1024 file descriptors available)

2016-09-06 12:21:19 Using 8 threads for script verification

2016-09-06 12:21:19 Using wallet wallet.dat

2016-09-06 12:21:19 init message: Verifying wallet...

2016-09-06 12:21:19 CDBEnv::Open : LogDir=/home/krypc/.multichain/pf/database ErrorFile=/home/krypc/.multichain/pf/db.log

2016-09-06 12:21:19 init message: Initializing multichain...

2016-09-06 12:21:19 nFileVersion = 100000

2016-09-06 12:21:19 Keys: 0 plaintext, 0 encrypted, 0 w/ metadata, 0 total

2016-09-06 12:21:19 mchn: Default key is not found - creating new...

2016-09-06 12:21:19 keypool added key 1, size=1

2016-09-06 12:21:19 keypool added key 2, size=2

2016-09-06 12:21:19 keypool reserve 1

2016-09-06 12:21:19 keypool keep 1

2016-09-06 12:21:19 mchn: Parameter set is not complete - starting paramset discovery thread...

2016-09-06 12:21:19 init message: Loading addresses...

2016-09-06 12:21:19 Loaded 0 addresses from peers.dat 0ms

2016-09-06 12:21:19 AddLocal(10.116.9.151:8571,1)

2016-09-06 12:21:19 Discover: IPv4 bond0: 10.116.9.151

2016-09-06 12:21:19 AddLocal(161.202.194.13:8571,1)

2016-09-06 12:21:19 Discover: IPv4 bond1: 161.202.194.13

2016-09-06 12:21:19 AddLocal([fe80::ec4:7aff:febd:a478]:8571,1)

2016-09-06 12:21:19 Discover: IPv6 bond0: fe80::ec4:7aff:febd:a478

2016-09-06 12:21:19 AddLocal([fe80::ec4:7aff:febd:a479]:8571,1)

2016-09-06 12:21:19 Discover: IPv6 bond1: fe80::ec4:7aff:febd:a479

2016-09-06 12:21:19 net thread start

2016-09-06 12:21:19 dnsseed thread start

2016-09-06 12:21:19 Loading addresses from DNS seeds (could take a while)

2016-09-06 12:21:19 0 addresses found from DNS seeds

2016-09-06 12:21:19 dnsseed thread exit

2016-09-06 12:21:19 msghand thread start

2016-09-06 12:21:19 dumpaddr thread start

2016-09-06 12:21:19 opencon thread start

2016-09-06 12:21:19 addcon thread start

2016-09-06 12:21:19 mchn: This node is in invalid state, ignoring version message from 10.116.9.139:5758

2016-09-06 12:21:19 mchn: Connection from 1PU9qLQSxbjYjkYU19CG1FAB2U5cKttw63 received on peer=1 in verack

2016-09-06 12:21:19 mchn: Successfully stored parameter set received from 10.116.9.139:5758

2016-09-06 12:21:29 net thread interrupt

2016-09-06 12:21:29 addcon thread interrupt

2016-09-06 12:21:29 opencon thread interrupt

2016-09-06 12:21:29 msghand thread interrupt

2016-09-06 12:21:29 dumpaddr thread stop

2016-09-06 12:21:29 mchn: Exited from paramset discovery thread

2016-09-06 12:21:29 mchn: Minimal blockchain parameter set is created, default address: 1D6oue8tJvDyEVXLARhYG3MirzWyncBTUVKLkM

2016-09-06 12:21:30 Shutdown: In progress...

2016-09-06 12:21:30 StopNode()

2016-09-06 12:21:30 Node stopped

2016-09-06 12:21:30 Shutdown: done

Comments

Thanks, we will take a look.