Composer playground unable to load sample business networks - blockchain

I am running composer playground locally and while I am connected to the Internet, it is unable to load the sample business networks when I attempt to deploy a new business network. I get following error message:
Error: could not get any sample networks.

Had the same issue. Make sure u have all your 3 Docker containers are up and running. So here is how it goes :
When u run locally, u gotta run Docker containers on your local machine.
When u want to deploy, u can do so in the Docker file or also upload to Docker hub and call the images from that path.
Good luck mate.

This error could be due to the fact that Composer Playgrounds (cp) is looking to a previous project. Besides the deletion of browser cookies for localhost:cp-listening-port (8080 by default), check that that your browser points to:
http://localhost:cp-listening-port/login

Related

AWS Docker Interpreter with Pycharm

I'm having difficulty to set this up correctly, and burning through AWS server time while I try to make it work. I have segmentation code that is heavily memory intensive that I'd like to temporarily spin up an AWS server with 192GB of ram. I understand that this is possible using docker, but the instructions on pycharm are non-existent with respect to the docker instructions necessary to tie it together (it references existing code as opposed to showing how to assemble it from scratch). What would the docker run command on the server look like to enable a connection to the 2375 port?
EDIT: I am using Pycharm Professional
UPD: Checking PyCharm options I found that there is an option to use Docker Machines. This seem to be exactly what you need. With Docker Machines you can make Docker spin up an EC2 instance for you with proper security out-of-the-box. Read official documentation on how to get started here and AWS driver options to learn how to set EC2 instance type, AMI, and other options here .
Original post:
To enable this feature you have to run Docker daemon with '-H' option:
sudo dockerd -H tcp://0.0.0.0:2375
You may read more on that in the Docker docs: https://docs.docker.com/engine/reference/commandline/dockerd/ .
Beware though, for EC2 you may also need to open that port using security group https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/authorizing-access-to-an-instance.html .
I also want to add that what you want to achieve isn't good from security perspective. Exposing docker socket like that is like an invitation for bad guys to throw a party at your EC2 instance. But since you mentioned that this is temporary...

AWS Elastic Beanstalk with docker incorrect version

I'm deploying a docker image from Github to AWS elastic beanstalk using travis. That part goes OK, the actual deployment exits with 0 and there is a .zip file in the S3 bucket.
The issue is that, since this is my first time using AWS I created the app using the Sample Application since the code is deployed from Github, and after the deployment I get the health status as degraded (red exclamation sign) with this message:
ERROR
During an aborted deployment, some instances may have deployed the new application version. To ensure all instances are running the same version, re-deploy the appropriate application version.
If I go to Causes I find this:
Application deployment failed at 2020-05-01T16:01:58Z with exit status 1 and error: Engine execution has encountered an error.
Incorrect application version "travis-e55e05342a8cc16f3f28f8e184735667a9531ffa-1588311901" (deployment 4). Expected version "Sample Application" (deployment 1).
I even deleted the sample application and re-deployed the one that was uploaded and got that particular error. As you can see in the last message I've deployed this 3 times already, getting the same result.
Finally I downloaded the zip file from the S3 bucket and I found inside basically the src and public folders along with all the files in the root folder such as package.json, .gitignore all the docker files, etc.
EDIT
I created two separate repos in github to test this.
The first repo is a static page in a Docker container, quite simple. I create an environment in EB and start everything with the sample app. Then I push the changes to github, travis does it's thing and deploys the app to AWS. This works fine and the app's env is updated with no errors. This is the repo:
https://github.com/rhernandog/docler-static-page-aws
The second repo is a simple react app. Same procedure, create the environment in EB with the sample app. Push the code to github, travis does it's thing and deploys to AWS. This fails and I keep getting the same error:
Environment health has transitioned from Info to Degraded. Command failed on all
instances. Incorrect application version found on all instances. Expected version
"Sample Application" (deployment 1). Application update failed 1 second ago and
took 2 minutes.
This is the repo for the react app:
https://github.com/rhernandog/react-docker-awseb
In terms of Docker, everything works fine in my local machine.
EDIT 2
Based on #stefansundin suggestion I re-deployed the app to EB and check the logs. I ended looking at the full logs for more information and found this:
/var/log/cfn-hup.log
2020-05-14 17:07:42,605 [WARNING] Action for aws-eb-command-handler exited with 1, returning FAILURE
The only place where I found an error was in the engine log file:
/var/log/eb-engine.log
2020/05/14 17:07:42.514601 [INFO] Executing instruction: Docker Specific Build Application
2020/05/14 17:07:42.514605 [INFO] start build docker app
2020/05/14 17:07:42.514615 [INFO] fetch image name
2020/05/14 17:07:42.514639 [INFO] authenticate with ECR if the image is in an ECR repo
2020/05/14 17:07:42.514644 [INFO] pull docker image if update is not false in dockerrun.aws.json
2020/05/14 17:07:42.514657 [INFO] Running command /bin/sh -c docker pull node:12-alpine AS builder
2020/05/14 17:07:42.558923 [ERROR] "docker pull" requires exactly 1 argument.
So basically this is complaining about this in the dockerfile: FROM node:12-alpine AS builder. You can see the whole file in the repo: https://github.com/rhernandog/react-docker-awseb/blob/master/Dockerfile
The point is: Why this doesn't happen in my local machine? And how can I actually get the files from the build command and copy them to the nginx folder?
That is actually the only error I found in the log files.
I solved the issue here:
AWS Elastic Beanstalk Docker Does not support Multi-Stage Build
it is a stage-naming problem of multi-stage Dockerfile. Just use an Unamed one
I also got a similar error in my node app:
Incorrect application version "travis-e55e05342a8cc16f3f28f8e184735667a9531ffa-1588311901" (deployment 4). Expected version "Sample Application" (deployment 1)
What turned out to be an issue with my building and deployment scripts were corrected (debugged in Jenkins) the application successfully deploys in beanstalk with no error.
Turns out the issue was not with Beanstalk or app version but with the build mechanism. Something to look into when nothing else works :)
I had the same issue for java app in docker container.
I tried all the recommendations from this topic, links from this topic and nothing helped.
In the end, the following action helped:
Enable enhanced health panel https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/health-enhanced-enable.html#health-enhanced-enable-console
Go to the extended panel of the desired environment
Select the instance that crashed due to this "version" issue and click reboot
Additionally:
In one of the cases, I had to delete all previous versions (section on the left panel) and push a new one and only after that make the above recommendations.
Also make sure you have sufficient rights to deploy (codepipeline/deployment)
AWS Docs say that
To solve this issue, start another deployment. You can redeploy a previous version that you know works, or configure your environment to ignore health checks during deployment and redeploy the new version to force the deployment to complete.
You can also identify and terminate the instances that are running the wrong application version. Elastic Beanstalk will launch instances with the correct version to replace any instances that you terminate. Use the EB CLI health command to identify instances that are running the wrong application version.
Can you try to delete the instances that runs your applications and start a fresh install?
Also, you can use CodePipeline to deploy your codes to Elastic Beanstalk, you can use your S3 folder for the source stage and skip the build process if your code is build on travis and deploy using the deploy stage to install your new app to your Elastic Beanstalk. There might be some misconfiguration while installing the new app to your environment.
I suggest you to terminate your instances and start new instances sorry if I got your question wrong.
I haven't used Docker on Elastic Beanstalk. When my Ruby on Elastic Beanstalk deployments fail, I find that I usually find the problem if I request the 100 last lines from the logs. If you navigate to "Logs" -> "Request Logs" -> "Last 100 Lines", that may help you.
If that fails, I SSH in to the instance and look in the logs in /var/log. Maybe docker ps and docker logs may help you.
While creating a new webserver environment on platform branch select "Docker running on 64bit Amazon Linux" it will work.

Unable to push to Google Container Registry - Permission issue

I'm having the sample problem as Vaclav. I've followed the GCR quick start to the letter which entailed creating a new project (called gcr-project) and copying the code for a Flask (python) app.
After building the docker image, I entered the commands:
gcloud auth configure-docker
docker tag quickstart-image gcr.io/gcr-project/quickstart-image:tag1
docker push gcr.io/gcr-project/quickstart-image:tag1
The response was:
unauthorized: You don't have the needed permissions to perform this operation, and you may have invalid credentials. To authenticate your request, follow the steps in: https://cloud.google.com/container-registry/docs/advanced-authentication
So it would be nice to know if the issue is with the credentials (I'm using cloud SDK OK for other projects) or permissions. The documentation here suggests you need storage-admin rights but the projects already has it, see screen cap here
Would appreciate any tips for trouble shooting this as I was looking for to using the GCR but this problem is a hard stop for me.
UPDATE:
I tried the same process with the cloud shell
me#cloudshell:~ (gcr-project-XXXXXX)$ docker push gcr.io/gcr-project/quickstart-image:tag1
The push refers to repository [gcr.io/gcr-project/quickstart-image]
4399528b7213: Preparing
1d10b1eeca74: Preparing
75156020d862: Preparing
c5697656a146: Preparing
2a435270de82: Preparing
c35f70b5c25a: Waiting
28e260baaf1b: Waiting
556c5fb0d91b: Waiting
denied: Token exchange failed for project 'gcr-project'. Please enable Google Container Registry API in Cloud Console at https://console.cloud.google.com/apis/api/containerregistry.googleapis.com/overview?project=gcr-project before performing this operation.
me#cloudshell:~ (gcr-project-XXXXXX)$
This prompted me to check the API & Services dashboard to confirm the container-registry API was enabled - It is.
UPDATE 2:
I'm having these problems on a machine running ubuntu 19.04. Per the comments below I was able to do a push via the cloud shell. So I then went through the same exercise on a MacBook Pro - worked no problems.
So I then uninstalled Cloud SDK per the doco having used the standard linux install instructions previously. I then re-installed using the debian-ubuntu install instructions (version 274.0.1-0)... STILL no go.
When I do a docker pull on the image (because push worked on MBP) I get this error: Error response from daemon: unauthorized: You don't have the needed permissions to perform this operation, and you may have invalid credentials. To authenticate your request, follow the steps in: https://cloud.google.com/container-registry/docs/advanced-authentication
And when I do a push I get this error: unauthorized: You don't have the needed permissions to perform this operation, and you may have invalid credentials. To authenticate your request, follow the steps in: https://cloud.google.com/container-registry/docs/advanced-authentication
So at this stage, given the success on the MBP and the lack thereof on the linux/ubuntu machine, the problem is constrained to to linux/ubuntu installs.
UPDATE 3:
I got on to a separate ubuntu server, did a clean install with sudo snap install google-cloud-sdk --classic , did everything else per the docs and still had the exact same problem. So I recon this is a linux google cloud SDK specific problem.
Is there anyone out there Ubuntu land who as been able install and use cloud SDK with GCR recently?????????
I was able to replicate this issue on multiple ubuntu machines. I tried again after the most recent cloud SDK update (276.0.0) but had no luck.
In the end I went with json key file authentincati described in the docs here as a work around which worked fine.

Laravel application doesn't start on PORT number on Cloud Run

I deployed my app on Cloud Run service of google. It shows error "Cloud Run error: Container failed to start. Failed to start and then listen on the port defined by the PORT environment variable. Logs for this revision might contain more information.
". I run this image on Cloud Shell to test, it still runs with PORT 8080 and bind 0.0.0.0, I can not find more error in log of cloud run. My project is laravel project. Please help me, how to find out more logs and debug this case.
Check Image
Port running
I fixed it. When i run with supervisor at local it runs, but on Cloud Run it's not ok. So i've changed to entrypoint to start php-fpm and nginx, it's okie on Cloud Run
You can look at this step by step guide that might help for this or similar problems with Laravel and Google Cloud Run.

BlockChain : Issue setting up dev environment for hyperledger fabric

I am a beginner in the blockchain technology and wanted to get some hands on by setting up a dev environment for hyperledger fabric.
I tried to setup the dev environment and was following the official documentation at https://hyperledger-fabric.readthedocs.io/en/latest/getting_started.html
In the step when I call the script network_setup.sh to bring the network up, It fails at the last step with an error as -
...
...
Trying to pull repository docker.io/hyperledger/fabric-testenv ..
Pulling repository docker.io/hyperledger/fabric-testenv
ERROR: Error: image hyperledger/fabric-testenv not found
The image itself is not available in the repository and hence the script fails.
Can someone guide me on how to overcome this and where can I find good references for setting up a fabric dev environment.
Yes, something blew up, so the URL had to be changed. The instructions have been updated, and the curl command points to a new URL now. Try it again, should work now. change logged here https://gerrit.hyperledger.org/r/#/c/8591/