swarmkit | orchestrating distributed systems at any scale | Runtime Evironment library

by docker Go Version: Current License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | swarmkit Summary

swarmkit is a Go library typically used in Server, Runtime Evironment, Nodejs applications. swarmkit has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Machines running SwarmKit can be grouped together in order to form a Swarm, coordinating tasks with each other. Once a machine joins, it becomes a Swarm Node. Nodes can either be worker nodes or manager nodes. An operator can dynamically update a Node's role by promoting a Worker to Manager or demoting a Manager to Worker. Tasks are organized in Services. A service is a higher level abstraction that allows the user to declare the desired state of a group of tasks. Services define what type of task should be created as well as how to execute them (e.g. run this many replicas at all times) and how to update them (e.g. rolling updates).

Support

Quality

Security

License

Reuse

Support

swarmkit has a medium active ecosystem.

It has 2784 star(s) with 585 fork(s). There are 160 watchers for this library.

It had no major release in the last 6 months.

There are 235 open issues and 576 have been closed. On average issues are closed in 232 days. There are 73 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of swarmkit is current.

Quality

swarmkit has 0 bugs and 0 code smells.

Security

swarmkit has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

swarmkit code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

swarmkit is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

swarmkit releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of swarmkit

Get all kandi verified functions for this library.

swarmkit Key Features

No Key Features are available at this moment for swarmkit.

swarmkit Examples and Code Snippets

No Code Snippets are available at this moment for swarmkit.

Community Discussions

Trending Discussions on swarmkit

Simple Docker container cluster deployment system

Does Kubernetes suffer from the "update out of sequence" errors that Docker Swarm randomly gets when there's several deployments running?

QUESTION

Simple Docker container cluster deployment system

Asked 2020-Jul-16 at 15:45

I am looking for a "simple" deployment system that can manage a cluster of computers.

I have one Docker image (hosted on DockerHub) that will run with different environment parameters in this cluster. For this image I have a docker_compose file that I can start on a machine directly (this works right now).

What I am looking for is a cluster management system to which I can add physical computers (nodes) and then I can issue commands like:

...

ANSWER

Answered 2020-Jul-16 at 15:45

As it comes to kubernetes and support for something like --device in docker, this answer should dispel your doubts.

It was widely discussed in this thread on github. Although there is no exact --device equivalent in kubernetes, it's worth repeating that it's possible to use host devices in your kubernetes Pods by enabling privileged mode as suggested in this comment:

Source https://stackoverflow.com/questions/62932599

QUESTION

Does Kubernetes suffer from the "update out of sequence" errors that Docker Swarm randomly gets when there's several deployments running?

Asked 2020-May-11 at 22:53

I find that when I do scheduled docker stack deployments and they happen around the same time I may get an "update out of sequence" error in a deployment.

I've seen many bugs and issues on this

Some of them are closed, but the problem apparently still persists to this day for some people. I was wondering if Kubernetes has solved this issue so it does not happen on K8S clusters.

...

ANSWER

Answered 2020-May-11 at 22:53

I wouldn't say the general issue is "solved" in Kubernetes as any shared system updating data can have synchronisation issues. You won't run into the issue often with the kubernetes primitives though.

That is until you start using complex, external Kubernetes API clients. Another area might be controllers competing with you to make updates (e.g the horizontal auto scaler setting replicas).

Update example

All kubernetes resources have a "resource version" in their metadata and it's possible for that data to be updated out of band with another change. This generally happens when data needs to be retrieved and inspected for an update to be made:

A retrieves val
A increments val
B retrieves val
B increments val
A applies val, resourceVersion increments
B applies val, resourceVersion mismatch, fails.

You could also add "C" into the mix. "C" isn't a very responsible shared api client (Bad C!). When applying it's val change, C doesn't supply a resourceVersion on it's update and silently blats any updates that were made since it retrieved val.

You will find that most kubernetes resources can be managed declaratively. So by applying PATCHes to an existing resources atomically on the kube apiserver (that atomicity is for a single resource).

Source https://stackoverflow.com/questions/61737609

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install swarmkit

SwarmKit is built in Go and leverages a standard project structure to work well with Go tooling. If you are new to Go, please see BUILDING.md for a more detailed guide. Once you have SwarmKit checked out in your $GOPATH, the Makefile can be used for common tasks.
Go 1.6 or higher
A working golang environment
Protobuf 3.x or higher to regenerate protocol buffer files (e.g. using make generate)
These instructions assume that swarmd and swarmctl are in your PATH. (Before starting, make sure /tmp/node-N don't exist).

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: