For deploying blockchain in an IBM Cloud Container Service, I am following the steps outlined on https://github.ibm.com/IBM-Blockchain/ibm-container-service/blob/v1.0.0/cs-offerings/free/README.md
while running the script "create_all.sh" I am getting the following error repeatedly:
Unable to connect to the server: dial tcp 127.0.0.1:8080: connectex: No connection could be made because the target machine actively refused it.
Waiting for createchannel container to be Completed
I have already tried starting the procedure from the first step all over again. But no luck so far. Not sure why I keep getting this error.
Any help or hint in this regard will be of great value to me. Thanks!
The environment variable KUBECONFIG should be pointing to the correct "kube config yml" file.
Related
I still don't know if the issue is with docker networking, node, or the connection from node to mysql.
But I have a docker that contains express gateway for api management. Every once in a while it starts giving Operation timed out
The error is coming from nodejs but when it happens :
I can't see anything in the logs of the container
Running tcpdump from the server shows a call being made to the docker api but returns a response of 500 (when running correctly i can see after it the call to the port 3306 to connect to the database)
Running tcpdump from inside the docker container returns absolutely nothing (when working correctly I can see the calls)
Calls that don't require a database connection work correctly! but still i can't see their logs in the container nor their calls inside tcpdump
It's as if the server is calling another docker, but i searched all volumes, images, there's no duplicate.
I tried to check the following :
Resources on the same machine
Resources on the database machine
tcpdump with wireshark on both the server and the docker
Add connection pooling to sequelize (In case a connection to the database is causing the block sometimes)
Checking all oauth2 routes in case it's redirecting to localhost server or anything
Literally adding logs everywhere just to see a log when this happens, but in vain
telnet from the server to the localhost with external port and to 172.17.0.2 with internal port -> slight difference when i do it from localhost, after a while i receive a Connection closed by foreign host
I don't know if it's normal for a docker container to hang like this or if an image is not correctly deleted, but things simply worked when I created the container with another name.
I'm building a NiFi dadaflow, and I need to get the data changes from a MySql database, so I want to use the CaptureChangeMySQL processor to do that.
I get the following error when I run the CaptureChangeMySQL processor and I don't see what's causing this :
Failed to process session due to Could not connect binlog client to any of the specified hosts due to: BinaryLogClient was unable to connect in 10000ms: org.apache.nifi.processor.exception.ProcessException: Could not connect binlog client to any of the specified hosts due to: BinaryLogClient was unable to connect in 10000ms
I have the following controller services enabled :
DistributedMapCacheClientService
DistributedMapCacheServer
But I'm not sure if they are properly configured :
DistributedMapCacheServer properties
DistributedMapCacheClientService properties
In MySql, I have enabled the log_bin variable, by default it wasn't. I checked and I have indeed some binlog files created when data change.
So I think the issue is with the controller services and how they connect, it's not clear to me.
I searched for tutorials about how to use this NiFi processor but I couldt not find how to fix this error. I looked mainly at this one : https://community.hortonworks.com/articles/113941/change-data-capture-cdc-with-apache-nifi-version-1-1.html but it did not helped me.
Does anyone have already use this processor to do CDC?
Thank you in advance.
I found what was wrong : I was trying to connect to the wrong port for the MySQL Host of the CaptureChangeMySQL processor :x
For others who are still facing similar issues, check if the firewall of the server is stopping the connection. Allow mysql 3306 in your firewall rules.
I am setting up a multi-node Hyperledger Sawtooth network using Docker images. I am able to bring up Sawtooth Validator, Settings TP and intkey TP on 3 AWS VMs, however, the Validators are not able to connect each other. I am getting the following error:
Attempted to remove send_message function for connection OutboundConnectionThread-tcp://3.xxx.xxx.xxx:8800, but no send_message function was registered
WARNING dispatch] Attempted to remove send_last_message function for connection OutboundConnectionThread-tcp://3.xxx.xxx.xxx:8800, but no send_last_message function was registered
Any pointers to resolve the issue would be very helpful. Thanks!
Here is the answer I posted in https://chat.hyperledger.org/channel/sawtooth
That looks like a ZMQ error. It was not able to connect, so it had an error when it was disconnecting during cleanup when the task was ending. The real error should be earlier. But I think the root cause is lack of network connectivity. Try these tips and see if they help:
https://sawtooth.hyperledger.org/faq/installation/#i-get-this-error-after-setting-up-a-sawtooth-network-can-t-send-message-ping-response-back-to-because-connection-outboundconnectionthread-tcp-192-168-0-100-8800-not-in-dispatcher
I have a need to run mysql queries within gulp to check certain fields in a table. I currently connect to a development server via ssh tunnel, which is opened via terminal so that my host is set to 'localhost'.
When I execute a connection attempt, the tunnel crashes with:
channel 4: open failed: connect failed: Connection refused
Then the server process crashes with an out of memory error.
We use node-mysql2 and a ssh tunnel to run GraphQL locally for testing, so I can't think of anything in particular in gulp that would cause what is essentially a race condition almost instantaneously from the time that the gulp command is sent.
Gulp Code:
If anyone has any insights I'd be much obliged.
Fix can be found here, thanks to the mysql2 developer for pointing me in the right direction!
More info on fix here:
https://stackoverflow.com/a/30669454/705115
I downloaded and installed the driver setup file, DB2OLEDB.exe, from here:
http://download.microsoft.com/mwg-internal/de5fs23hu73ds/progress?id=HYLbKUfGNl
Using the connection string that worked on another PC, I tried to create a Connection Object in an SSIS package. When I tested the connection I got this error:
Test connection failed because of an error in initializing provider. A TCPIP socket error has occurred (10057): A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied.
Any suggestions on what the cause of this error is and how I might resolve this issue?
By the way, when I use the DB2 Configuration set up utility and test a connection from within that, I am able to successfully connect.
What other info can I provide to help you answer this question?
Thank you
Could this be related to a blocked port?
If you follow all the steps illustrated here: http://www.bidn.com/blogs/PatrickLeBlanc/ssis/700/connecting-to-db2-using-ssis do you still get the same result?
Maybe a silly question, did you restart the computer after the installation?
Are you an admin user on one machine and not on the other?
You could try to verify the port connectivity with a quick telnet command:
telnet your-db-host your-db-listening-port
If it connects, that one is off the list.
Doing some research I've found two possible fixes.
The first link suggests calling BeginReceive after the EndAccept logic is complete. Are you using script code, or just using the GUI without any scripting?
TCP async sockets throwing 10057
The second link points to drivers / software on the PC. It could be that you are missing a windows update or have faulty hardware / drivers.
I think this is less likely the case since you could connect to a different machine with the same connection string(?). Can you verify this is a valid statement?
http://social.msdn.microsoft.com/Forums/en-US/1bc3df95-c86d-4d25-aa20-30f61ed00c63/odd-socket-errors
If you could show the connection strings used for both the working and non working, and give a little more detail about The "Other PC" in comparison to the non-working PC... that would be helpful =]
If neither of the posts I've linked are the solution, this specific Google search has proven to yield some seemingly helpful results
"socket" "10057" "no address was supplied."