kubernetes | Production-Grade Container Scheduling and Management | Continuous Deployment library

 by   kubernetes Go Version: v1.26.6 License: Apache-2.0

kandi X-RAY | kubernetes Summary

kandi X-RAY | kubernetes Summary

kubernetes is a Go library typically used in Devops, Continuous Deployment, Docker applications. kubernetes has no bugs, it has a Permissive License and it has medium support. However kubernetes has 1 vulnerabilities. You can download it from GitHub, GitLab.

Kubernetes, also known as K8s, is an open source system for managing containerized applications across multiple hosts. It provides basic mechanisms for deployment, maintenance, and scaling of applications. Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community. Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF). If your company wants to help shape the evolution of technologies that are container-packaged, dynamically scheduled, and microservices-oriented, consider joining the CNCF. For details about who's involved and how Kubernetes plays a role, read the CNCF announcement.

            kandi-support Support

              kubernetes has a medium active ecosystem.
              It has 99203 star(s) with 36400 fork(s). There are 3247 watchers for this library.
              There were 10 major release(s) in the last 12 months.
              There are 1695 open issues and 41545 have been closed. On average issues are closed in 109 days. There are 828 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of kubernetes is v1.26.6

            kandi-Quality Quality

              kubernetes has 0 bugs and 0 code smells.

            kandi-Security Security

              kubernetes has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).
              kubernetes code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              kubernetes 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.

            kandi-Reuse Reuse

              kubernetes releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.
              It has 1909213 lines of code, 86980 functions and 9795 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

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            kubernetes Key Features

            No Key Features are available at this moment for kubernetes.

            kubernetes Examples and Code Snippets

            No Code Snippets are available at this moment for kubernetes.

            Community Discussions


            Microk8s dashboard using nginx-ingress via http not working (Error: `no matches for kind "Ingress" in version "extensions/v1beta1"`)
            Asked 2022-Apr-01 at 07:26

            I have microk8s v1.22.2 running on Ubuntu 20.04.3 LTS.

            Output from /etc/hosts:



            Answered 2021-Oct-10 at 18:29
            error: unable to recognize "ingress.yaml": no matches for kind "Ingress" in version "extensions/v1beta1"

            Source https://stackoverflow.com/questions/69517855


            PRECONDITION_FAILED: Delivery Acknowledge Timeout on Celery & RabbitMQ with Gevent and concurrency
            Asked 2022-Mar-05 at 01:40

            I just switched from ForkPool to gevent with concurrency (5) as the pool method for Celery workers running in Kubernetes pods. After the switch I've been getting a non recoverable erro in the worker:

            amqp.exceptions.PreconditionFailed: (0, 0): (406) PRECONDITION_FAILED - delivery acknowledgement on channel 1 timed out. Timeout value used: 1800000 ms. This timeout value can be configured, see consumers doc guide to learn more

            The broker logs gives basically the same message:

            2021-11-01 22:26:17.251 [warning] <0.18574.1> Consumer None4 on channel 1 has timed out waiting for delivery acknowledgement. Timeout used: 1800000 ms. This timeout value can be configured, see consumers doc guide to learn more

            I have the CELERY_ACK_LATE set up, but was not familiar with the necessity to set a timeout for the acknowledgement period. And that never happened before using processes. Tasks can be fairly long (60-120 seconds sometimes), but I can't find a specific setting to allow that.

            I've read in another post in other forum a user who set the timeout on the broker configuration to a huge number (like 24 hours), and was also having the same problem, so that makes me think there may be something else related to the issue.

            Any ideas or suggestions on how to make worker more resilient?



            Answered 2022-Mar-05 at 01:40

            For future reference, it seems that the new RabbitMQ versions (+3.8) introduced a tight default for consumer_timeout (15min I think).

            The solution I found (that has also been added to Celery docs not long ago here) was to just add a large number for the consumer_timeout in RabbitMQ.

            In this question, someone mentions setting consumer_timeout to false, in a way that using a large number is not needed, but apparently there's some specifics regarding the format of the configuration for that to work.

            I'm running RabbitMQ in k8s and just done something like:

            Source https://stackoverflow.com/questions/69828547


            Github Actions Failing
            Asked 2022-Feb-25 at 02:08

            Github Actions were working in my repository till yesterday. I didnt make any changes in .github/workflows/dev.yml file or in DockerFile.

            But, suddenly in recent pushes, my Github Actions fail with the error

            Setup, Build, Publish, and Deploy



            Answered 2021-Jul-27 at 13:24

            I fixed it by changing uses value to

            • uses: google-github-actions/setup-gcloud@master

            Source https://stackoverflow.com/questions/68516559


            Add Kubernetes scrape target to Prometheus instance that is NOT in Kubernetes
            Asked 2022-Feb-13 at 20:24

            I run prometheus locally as http://localhost:9090/targets with



            Answered 2021-Dec-28 at 08:33

            There are many agents capable of saving metrics collected in k8s to remote Prometheus server outside the cluster, example Prometheus itself now support agent mode, exporter from Opentelemetry, or using managed Prometheus etc.

            Source https://stackoverflow.com/questions/70457308


            Docker standard_init_linux.go:228: exec user process caused: no such file or directory
            Asked 2022-Feb-08 at 20:49

            Whenever I am trying to run the docker images, it is exiting in immediately.



            Answered 2021-Aug-22 at 15:41

            Since you're already using Docker, I'd suggest using a multi-stage build. Using a standard docker image like golang one can build an executable asset which is guaranteed to work with other docker linux images:

            Source https://stackoverflow.com/questions/68881023


            Does docker-compose support init container?
            Asked 2022-Jan-25 at 09:32

            init container is a great feature in Kubernetes and I wonder whether docker-compose supports it? it allows me to run some command before launch the main application.

            I come cross this PR https://github.com/docker/compose-cli/issues/1499 which mentions to support init container. But I can't find related doc in their reference.



            Answered 2021-Dec-21 at 14:11

            This was a discovery for me but yes, it is now possible to use init containers with docker-compose since version 1.29 as can be seen in the PR you linked in your question.

            Meanwhile, while I write those lines, it seems that this feature has not yet found its way to the documentation

            You can define a dependency on an other container with a condition being basically "when that other container has successfully finished its job". This leaves the room to define containers running any kind of script and exit when they are done before an other dependent container is launched.

            To illustrate, I crafted an example with a pretty common scenario: spin up a db container, make sure the db is up and initialize its data prior to launching the application container.

            Note: initializing the db (at least as far as the official mysql image is concerned) does not require an init container so this example is more an illustration than a rock solid typical workflow.

            The complete example is available in a public github repo so I will only show the key points in this answer.

            Let's start with the compose file

            Source https://stackoverflow.com/questions/70322031


            set git configuration in gitlab CI for default branch to prevent hint message
            Asked 2022-Jan-18 at 11:03

            In my gitlab CI I always get this hint messages. Yes, I see I have to set git config --global init.defaultBranch main, but everything I'm adding in my stages / jobs of the CI gitlab config is executed after fetching.



            Answered 2022-Jan-13 at 16:37

            As far as i experienced, the only way to disable this message is to set the config globally in the .gitconfig of the user running the gitlab-runner.

            This can either be done on the underlying VM if you use the shell-runner or inside the used docker-image when using the docker-runner


            Altough it says global, the git-setting is user based. You'll have to set it as the same user that executes the gitlab-runner. Depending on the configuration, this might be gitlab-runner or a custom user on shell-runners or root when using the docker-executor.

            Source https://stackoverflow.com/questions/70663872


            Criteria for default garbage collector Hotspot JVM 11/17
            Asked 2022-Jan-11 at 10:26

            I found a source describing that the default gc used changes depending on the available resources. It seems that the jvm uses either g1gc or serial gc dependnig on hardware and os.

            The serial collector is selected by default on certain hardware and operating system configurations

            Can someone point out a more detailed source on what the specific criteria is and how that would apply in a dockerized/kubernetes enivronment. In other words:

            Could setting resource requests of the pod in k8s to eg. 1500 mCpu make the jvm use serial gc and changing to 2 Cpu change the default gc to g1gc? Do the limits on when which gc is used change depending on jvm version (11 vs 17)?



            Answered 2022-Jan-11 at 10:24

            In JDK 11 and 17 Serial collector is used when there is only one CPU available. Otherwise G1 is selected

            If you limit the number of CPUS available to your container, JVM selects Serial instead of the defaultG1

            JDK11 1 CPU

            Source https://stackoverflow.com/questions/70664562


            Why is ArgoCD confusing GitHub.com with my own public IP?
            Asked 2022-Jan-10 at 17:37

            I have just set up a kubernetes cluster on bare metal using kubeadm, Flannel and MetalLB. Next step for me is to install ArgoCD.

            I installed the ArgoCD yaml from the "Getting Started" page and logged in.

            When adding my Git repositories ArgoCD gives me very weird error messages: The error message seems to suggest that ArgoCD for some reason is resolving github.com to my public IP address (I am not exposing SSH, therefore connection refused).

            I can not find any reason why it would do this. When using https:// instead of SSH I get the same result, but on port 443.

            I have put a dummy pod in the same namespace as ArgoCD and made some DNS queries. These queries resolved correctly.

            What makes ArgoCD think that github.com resolves to my public IP address?


            I have also checked for network policies in the argocd namespace and found no policy that was restricting egress.

            I have had this working on clusters in the same network previously and have not changed my router firewall since then.



            Answered 2022-Jan-08 at 21:04

            That looks like argoproj/argo-cd issue 1510, where the initial diagnostic was that the cluster is blocking outbound connections to GitHub. And it suggested to check the egress configuration.

            Yet, the issue was resolved with an ingress rule configuration:

            need to define in values.yaml.
            argo-cd default provide subdomain but in our case it was /argocd

            Source https://stackoverflow.com/questions/70600322


            Kubernetes: what's the difference between Deployment and Replica set?
            Asked 2022-Jan-09 at 17:34

            Both replica set and deployment have the attribute replica: 3, what's the difference between deployment and replica set? Does deployment work via replica set under the hood?

            configuration of deployment



            Answered 2021-Oct-05 at 09:41

            A deployment is a higher abstraction that manages one or more replicasets to provide controlled rollout of a new version.

            As long as you don't have a rollout in progress a deployment will result in a single replicaset with the replication factor managed by the deployment.

            Source https://stackoverflow.com/questions/69448131

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


            No vulnerabilities reported

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