learnk8s.io | Continuous Deployment library

by learnk8s TypeScript Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(4)Vulnerabilities Install Support

kandi X-RAY | learnk8s.io Summary

learnk8s.io is a TypeScript library typically used in Devops, Continuous Deployment, Docker applications. learnk8s.io has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

learnk8s.io

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learnk8s.io has a low active ecosystem.

It has 71 star(s) with 27 fork(s). There are 16 watchers for this library.

It had no major release in the last 6 months.

There are 5 open issues and 39 have been closed. On average issues are closed in 269 days. There are 22 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of learnk8s.io is current.

Quality

learnk8s.io has no bugs reported.

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learnk8s.io has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

learnk8s.io does not have a standard license declared.

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Without a license, all rights are reserved, and you cannot use the library in your applications.

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learnk8s.io releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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learnk8s.io Key Features

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learnk8s.io Examples and Code Snippets

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Community Discussions

Trending Discussions on learnk8s.io

Spring boot basic application: field NotesRepository required a bean of type 'com.demo.NotesRepository' that could not be found

docker command does not work in PowerShell (Windows 10 Home)?

The "minikube" cluster does not exist

Kubernetes how to load balance EXTERNAL persistent tcp connections?

QUESTION

Spring boot basic application: field NotesRepository required a bean of type 'com.demo.NotesRepository' that could not be found

Asked 2020-Apr-29 at 14:52

TLDR: I'm playing around with a simple Spring Boot application that doesnt seem to work and throws two kinds of errors depending on how I run it:

1) Claiming that the repo bean was not found:

...

ANSWER

Answered 2020-Apr-29 at 14:11

what does your MainJavaApplication look like? If you're not specifying the package to be scanned, the ApplicationContext won't be able to create the beans at the start-up time and as a result wouldn't be injectable.

Source https://stackoverflow.com/questions/61503799

QUESTION

docker command does not work in PowerShell (Windows 10 Home)?

Asked 2020-Apr-16 at 23:52

Well, I am trying to instal minikube in a PC with Windows 10 Home.

I am following this tutorial:

https://learnk8s.io/blog/installing-docker-and-kubernetes-on-windows

I am in the step where I should execute the following command in PowerShell:

...

ANSWER

Answered 2020-Apr-16 at 23:52

Well, I solved my proble running the commands in cmd don't in PowerShell.

The command for starting docker in Windows works in cmd (Windows 10 Home Edition) is:

Source https://stackoverflow.com/questions/61147692

QUESTION

The "minikube" cluster does not exist

Asked 2020-Mar-10 at 01:46

I am trying to install minikube following this:

https://learnk8s.io/blog/installing-docker-and-kubernetes-on-windows

but getting error The "minikube" cluster does not exist

I have checked :

Hyper-v is enabled on windows 10
choco is working
Docker Desktop with Kubernetes enabled is installed & working

after installation step when I check status with minikube status, it shows :

...

ANSWER

Answered 2020-Mar-09 at 09:19

Based on the info you provided and fixes you have already tried I see two things to consider:

The HyperV driver could have timed out without giving an error message. To workaround that you can add a --force to the minikube start command. Basically it would look like that: minikube start --vm-driver=hyperv --force.
Your VPN could cause some internet and/or local connection issues. Try disabling your VPN if possible.

Please let me know if that helped.

Source https://stackoverflow.com/questions/60539940

QUESTION

Kubernetes how to load balance EXTERNAL persistent tcp connections?

Asked 2020-Mar-01 at 23:40

I'm having an issue with load balancing persistent tcp connections to my kubernetes replicas.

I have Unity3D clients outside of the kubernetes cluster.

My cluster is a baremetal cluster with metallb installed composed out of 3 nodes: 1 master and 2 workers.

As I have read there are two approaches:

1) client connects to all replicas and each time it needs to send a request it will do so on a random connection out of those that it has previously established. Periodically, it refreshes connections (in case autoscale happened or some of the persistent connections died).

The problem here is, I'm not sure how to access all replicas externally, headless services cannot be exposed externally.

2) service mesh ? I have vaguely read/understood that they might establish persistent tcp on your behalf. So something like this :

unity3d client <----persistent connection ---> controller <---persistent connection----> replicas

However, I'm not sure how to accomplish this and I'm not sure what will happen if the controller itself fails, will all the clients get their connections dropped ? As I see it, it will come down to the same issue as the one from 1), which is allowing a client to connect to multiple different replicas at the same time with a persistent TCP connection.

Part of question comes as a complement to this : https://learnk8s.io/kubernetes-long-lived-connections

...

ANSWER

Answered 2020-Mar-01 at 23:40

In order to enable external traffic to your cluster you need an Ingress Gateway. Your ingress gateway could be the standard nginx Ingress, a gateway provided by a mesh like the Istio Gateway or a more specialized edge gateway like ambassador, traefik, kong, gloo, etc.

There are at least two ways you can perform load balancing in K8s:

Using a Service resource which is just a set of iptables rules managed by the kube-proxy process. This is L4 load balancing only. No L7 application protocols like HTTP2 or gRPC are supported. Depending on your case, this type of LB might not be ideal for long lived connections as connections will rarely be closed.
Using the L7 load balancing offered by any of the ingress controllers which will skip the iptables routing (using a headless Service) and allow for more advanced load balancing algorithms.

In order to benefit from the latter case you still need to ensure that connections are eventually terminated which is often done from the client to the proxy (while reusing connections from the proxy to the upstream). I'm not familiar with Unity3D connections but if terminating them is not an option you won't be able to do much load balancing after all.

When the controller fails, connections will be dropped and your client could either graciously re-attempt the connection or panic. It depends on how you code it.

Source https://stackoverflow.com/questions/60470270

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