swarm | Censorship resistant storage and communication | Blockchain library
kandi X-RAY | swarm Summary
kandi X-RAY | swarm Summary
Swarm is a distributed storage platform and content distribution service, a native base layer service of the ethereum web3 stack. The primary objective of Swarm is to provide a decentralized and redundant store for dapp code and data as well as block chain and state data. Swarm is also set out to provide various base layer services for web3, including node-to-node messaging, media streaming, decentralised database services and scalable state-channel infrastructure for decentralised service economies.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of swarm
swarm Key Features
swarm Examples and Code Snippets
Lines of Code : 5License : Permissive (MIT License)
Copy@Override
public String toString() {
return "Swarm [particles=" + Arrays.toString(particles) + ", bestPosition=" + Arrays.toString(bestPosition)
+ ", bestFitness=" + bestFitness + ", random=" + random + "]";
} Community Discussions
Trending Discussions on swarm
QUESTION
Got a small problem (I guess). I created c# rest web API on docker swarm environment. Rest API is working properly - tested via the postman. Then I tried to compose Hasura service on the same docker swarm environment. The console is working properly also. The problem is with query action.
Code:
Action definition:
...ANSWER
Answered 2021-Jun-14 at 19:30No, currently it's not possible, Hasura always makes POST requests to the action handler:
When the action is executed i.e. when the query or the mutation is called, Hasura makes a POST request to the handler with the action arguments and the session variables.
Source: https://hasura.io/docs/latest/graphql/core/actions/action-handlers.html#http-handler
QUESTION
I'm running gitlab-ce on-prem with min.io as a local S3 service. CI/CD caching is working, and basic connectivity with the S3-compatible minio is good. (Versions: gitlab-ce:13.9.2-ce.0, gitlab-runner:v13.9.0, and minio/minio:latest currently c253244b6fb0.)
Is there additional configuration to differentiate between job-artifacts and pipeline-artifacts and storing them in on-prem S3-compatible object storage?
In my test repo, the "build" stage builds a sparse R package. When I was using local in-gitlab job artifacts, it succeeds and moves on to the "test" and "deploy" stages, no problems. (And that works with S3-stored cache, though that configuration is solely within gitlab-runner.) Now that I've configured minio as a local S3-compatible object storage for artifacts, though, it fails.
ANSWER
Answered 2021-Jun-14 at 18:30The answer is to bypass the empty-string test; the underlying protocol does not support region-less configuration, nor is there a configuration option to support it.
The trick is able to work because the use of 'endpoint' causes the 'region' to be ignored. With that, setting the region to something and forcing the endpoint allows it to work:
QUESTION
I am working on setting up a three node Docker swarm for a web application I support. Initially, we have Traefik setup as a reverse proxy. Traefik and the web app both run on the same web server and the web server is in a single node docker swarm. We are trying to add two additional nodes for application stability.
At the moment, I'm simply trying to understand Traefik load balancing along with Docker Swarm. I am deploying a Traefik v1.7 stack and including the whoami application. The docker-compose file for this first past looks like:
...ANSWER
Answered 2021-Jun-13 at 03:53Apparently Traefik can't drain the connections during update (maybe it doesn't have access to healthchecks and swarm info?).
To achieve a zero-downtime rolling update you should delegate the load-balancing to docker swarm itself:
QUESTION
we use multiple PHP workers. Every PHP worker is organized in one container. To scale the amount of parallel working processes we handle it in a docker swarm.
So the PHP is running in a loop and waiting for new jobs (Get jobs from Gearman). If a new job is receiving, it would be processed. After that, the script is waiting for the next job without quitting/leaving the PHP script.
Now we want to update our workers. In this case, the image is the same but the PHP script is changed. So we have to leave the PHP script, update the PHP script file, and restart the PHP script.
If I use this docker service update command. Docker will stop the container immediately. In the worst case, a running worker will be canceled during this work.
...ANSWER
Answered 2021-Jun-11 at 20:48In the meantime, we have solved it with SIGNALS.
In PHP work with signals is very easy. In our case, this structure helped us.
QUESTION
Docker is running, ContainerExecCreate creates a container, but ContainerExecAttach returns: Cannot connect to the Docker daemon at unix: ///var/run/docker.sock in response. Is the docker daemon running?
What could be the problem.
...ANSWER
Answered 2021-Jun-08 at 20:40It looks normal. May depend on the state of the docker at the time of the call. It is possible to check docker via Ping or just wait one second.
QUESTION
I am trying to display both the means and errors (kind="point") and individual data points (kind="swarm") overlayed on the same catplot in Seaborn.
I have the following code:
...ANSWER
Answered 2021-Jun-04 at 14:16Using a face grid, you can overlay each one by specifying each one with map_dataframe(). The examples in this official reference have been modified. The data is based on sample data.
QUESTION
I'm following a tutorial on docker stack, swarm, compose, etc.
the teacher connects to a VM of the swarm and then deploys a docker stack from this directory docker@node1:~/srv/swarm-stack-1:
ANSWER
Answered 2021-Jun-03 at 10:23SOLVED
The solution here is not to ssh into the VM, and instead to change to the VM context with:
QUESTION
I'm trying to add Web3 to a React project. I've initalized a new project with
...ANSWER
Answered 2021-Apr-26 at 09:19Unfortunately, most of the Web3 stack relies heavily on window, browser and external, crypto dependencies which aren't available on server-side. This isn't just an issue with Gatsby, but other SSR and static site generators (e.g. Next.js) as well.
There are a few workarounds though. See Using Client-Side Only Packages on Gatsby
Use a different library or approach
Add client-side package via CDN
Load client-side dependent components with loadable-components
Use React.lazy and Suspense on client-side only
Depending on your requirements #1 is likely not an option. I've had better success using ethers, instead of web3. But you'll likely run into similar issues with other packages at some point.
A combination of #2 and 3/4 will be the way to go.
First, remove the packages (web3) that are causing issues and load them either from gatsby-browser.js or using react-helmet on the page/component that's using it.
gatsby-browser.js
QUESTION
I have deployed my application using Docker Swarm with 3 machines.
MongoDB Replica Set is configured manually and its working as a service on Ubuntu machine.
I am trying to connect to my Backend application to MongoDB Replica Set but I am getting context deadline exceeded error. I am using Private-ip to connect since machines are in same AWS VPC. Port 27017 is open in the security group and can be used by VPC network IP.
/etc/hosts is correctly configured on every machine.
I am using Docker-Compose file to deploy the stack.
Replica Set is working fine. I have checked it with manually inserting few documents.
The picture will help readers to understand the context better.
Abbreviations
- BE = Backend
- FE = Frontend
- Mac 1 = Machine 1
- AZ-1 = Availability Zone 1
- VPC = Virtual Private Cloud
My Guess:
Is it because Replica-Set in not in the Swarm Network and that's why its unable to connect ???
I am trying to fix this issue for quite sometime now and have not been successful yet. Help is required now.
...ANSWER
Answered 2021-Jun-02 at 10:18I found the solution.
The problem was related to the names of the MongoDB replica instances.
- The host name for first member is
"host" : "10.0.0.223:27017" - The host name for second member is
"host" : "node2:27017" - The host name for third member is
"host" : "node3:27017"
Due to this inconsistency, the backend application was not able to connect to the replica set.
QUESTION
I am currently setting up remote workers via docker swarm for Apache Airflow on AWS EC2 instances.
A remote worker shuts down every 60 seconds without an apparent reason with the following error:
...ANSWER
Answered 2021-May-31 at 13:50just wanted to let you know that I was able to fix the issue by setting
CELERY_WORKER_MAX_TASKS_PER_CHILD=500, which otherwise defaults to 50. Our Airflow DAG was sending around 85 tasks to this worker, so it was probably overwhelmed.
Apparently celery doesn't accept more incoming messages from redis and redis shuts down the worker if its outgoing message pipeline is full.
After searching for days with two people, we found the answer. Apparently it is still a workaround, but it works as is should now. I found the answer in this github issue. Just wanted to let you know.
If you have further insights please feel free to share.
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