kops | Kubernetes Operations - Production Grade k8s | Continuous Deployment library

 by   kubernetes Go Version: v1.27.0-alpha.2 License: Apache-2.0

kandi X-RAY | kops Summary

kandi X-RAY | kops Summary

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

We like to think of it as kubectl for clusters. kops will not only help you create, destroy, upgrade and maintain production-grade, highly available, Kubernetes cluster, but it will also provision the necessary cloud infrastructure. AWS (Amazon Web Services) is currently officially supported, with DigitalOcean, GCE, and OpenStack in beta support, and Azure and AliCloud in alpha.

            kandi-support Support

              kops has a medium active ecosystem.
              It has 15009 star(s) with 4596 fork(s). There are 321 watchers for this library.
              There were 7 major release(s) in the last 12 months.
              There are 139 open issues and 4733 have been closed. On average issues are closed in 132 days. There are 53 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of kops is v1.27.0-alpha.2

            kandi-Quality Quality

              kops has 0 bugs and 0 code smells.

            kandi-Security Security

              kops has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              kops code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              kops 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

              kops releases are available to install and integrate.
              It has 197263 lines of code, 7993 functions and 1352 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

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            kops Key Features

            No Key Features are available at this moment for kops.

            kops Examples and Code Snippets

            No Code Snippets are available at this moment for kops.

            Community Discussions


            Unrecognized feature gate SupportPodPidsLimit. KOPS, Kubernetes 1.23.0
            Asked 2022-Apr-04 at 09:48

            I'm spawning a kube cluster with KOPS. All works fine until I added feature gate SupportPodPidsLimit to kubelet:

            SupportPodPidsLimit: "true"

            Master node syslog shows: Failed to set feature gates from initial flags-based config" err="unrecognized feature gate: SupportPodPidsLimit

            I haven't found in KOPS or Kube docs what and why feature gates can be unknown. Kube docs say SupportPodPidsLimit exists since 1.20.0 in GA. I'm using 1.23.0

            Expecting to set podPidsLimit



            Answered 2022-Apr-04 at 09:48

            Have a look at the list of feature gates When the gate is GA, it is enabled by default and removed. Since you are using 1.23, the feature gate does indeed no longer exist.

            Source https://stackoverflow.com/questions/71735082


            Thanos-Query/Query-Frontend does not show any metrics
            Asked 2022-Feb-24 at 15:46

            Basically, I had installed Prometheues-Grafana from the kube-prometheus-stack using the provided helm chart repo prometheus-community



            Answered 2022-Feb-24 at 15:46

            It's not enough to simply install them, you need to integrate prometheus with thanos.

            Below I'll describe all steps you need to perform to get the result.

            First short theory. The most common approach to integrate them is to use thanos sidecar container for prometheus pod. You can read more here.

            How this is done:

            (considering that installation is clean, it can be easily deleted and reinstalled from the scratch).

            1. Get thanos sidecar added to the prometheus pod.

            Pull kube-prometheus-stack chart:

            Source https://stackoverflow.com/questions/71243202


            Auto Join Nodes to Kubeadm Clusters In AWS
            Asked 2022-Feb-23 at 22:31

            I'm having to build a demo Kubernetes cluster in AWS using Kubeadm.

            Unfortunately, for several reasons, Kops, and EKS are out of the question in my current environment.

            How do I deal with things such as auto-scaling and auto joining worker nodes back to the master if they get terminated for any reason? This is my main concern.

            I've done this with Kops in the past and it's relatively straightforward, but I'm not sure how to manage using Kubeadm.



            Answered 2022-Feb-12 at 21:13

            If you're using Ansible, you can set up your launch configuration to pull a git repo, and run a playbook to extract the join token from the Master and run on the worker nodes.

            Source https://stackoverflow.com/questions/71086569


            What is the difference between machineType and mixedInstancesPolicy
            Asked 2022-Feb-19 at 19:18

            Does anybody know when creating InstanceGroup using kops, why we set both machineType and mixedInstancesPolicy? Does machineType means kops will pick machineType by default but if no instance with machineType available it will pick one of the types from mixedInstancesPolicy?

            The spec: https://kops.sigs.k8s.io/instance_groups/ shows: "A Mixed Instances Policy utilizing EC2 Spot and the capacity-optimized allocation strategy allows an EC2 Autoscaling Group to select the instance types with the highest capacity. This reduces the chance of a spot interruption on your instance group."

            the spec does not show what machineType is and what is the difference of machineType and mixedInstancesPolicy.



            Answered 2022-Feb-19 at 19:18

            mixedInstancesPolicy is as described above. machineType is used if you do want one specific instance type.

            There is a bit of terminology mix-up there. But you can see machineType as the same as instanceType.

            If both are set, mixedInstancesPolicy is the on that will be used. However, machineType must is still validated and must e.g match the architecture of the instances in mixedInstancesPolicy.

            Source https://stackoverflow.com/questions/69413079


            Store KOPS CA key and certificate in Vault
            Asked 2022-Feb-03 at 12:35

            I've recently started using KOPS as a tool to provision Kubernetes clusters and from what I've seen so far, it stores it's CA key and certificates in its S3 bucket, which is fine.

            But out curiosity, would it be possible to store these in Hashicorp Vault instead, as opposed to s3?



            Answered 2022-Feb-03 at 12:35

            But out curiosity, would it be possible to store these in Hashicorp Vault instead, as opposed to s3?

            Yes. User Matt Schuchard has mentioned in the comment:

            Yes you can store them in the KV2 secrets engine, or use the PKI secrets engine to generate them instead.

            For more details look at this kops documentation. The most interesting part should be Node authentication and configuration:

            The vault store uses IAM auth to authenticate against the vault server and expects the vault auth plugin to be mounted on /aws.

            Instructions for configuring your vault server to accept IAM authentication are at https://learn.hashicorp.com/vault/identity-access-management/iam-authentication

            To configure kOps to use the Vault store, add this to the cluster spec:

            Source https://stackoverflow.com/questions/70968056


            cluster-autoscaler deployment fails with "1 Too many pods, 3 node(s) didn't match Pod's node affinity/selector"
            Asked 2022-Jan-11 at 09:46

            I have created a k8s cluster with kops (1.21.4) on AWS and as per the docs on autoscaler. I have done the required changes to my cluster but when the cluster starts, the cluster-autoscaler pod is unable to schedule on any node. When I describe the pod, I see the following:



            Answered 2022-Jan-07 at 04:12

            You need to check the pod/deployment for nodeSelector property. Make sure that your desired nodes have this label.

            Also, if you want to schedule pods on the master node, you must remove the taint first

            Source https://stackoverflow.com/questions/70610049


            Kops cluster on AWS timeout
            Asked 2021-Nov-17 at 09:27

            This is really annoying me and I can't seem to find any answers on the internet.

            I created a cluster using kops on AWS yesterday and everything worked fine. But for some reason (and this is like the 5th time it happens), I come back 1 or 2 days after and simply cannot access the cluster. All the other times my solution was to delete everything manually and create the cluster again.

            Here's my kubectl client version

            Client Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.3", GitCommit:"c92036820499fedefec0f847e2054d824aea6cd1", GitTreeState:"clean", BuildDate:"2021-10-27T18:41:28Z", GoVersion:"go1.16.9", Compiler:"gc", Platform:"linux/amd64"}

            Here's what I tried:

            1. kubectl get nodes/pods/services/etc -v 7


            Answered 2021-Nov-17 at 09:27

            For future reference, the problem is that I was using small, burstable instances both for master and nodes. Those didn't meet the hardware requirements for K8S.

            Source https://stackoverflow.com/questions/69996768


            Add SCDF (Spring Cloud Data Flow) Application to Bitnami chart generated cluster?
            Asked 2021-Sep-01 at 17:51

            I've used the Bitnami Helm chart to install SCDF into a k8s cluster generated by kOps in AWS.

            I'm trying to add my development SCDF stream apps into the installation using a file URI and cannot figure-out where or how the shared Skipper & Server mount point is. exec'ing into either instance there is no /home/cnb and I'm not seeing anything common via mount. The best I can tell the Bitnami installation is using the MariaDB instance for shared "storage".

            Is there a recommended way of installing local/dev Stream apps into the cluster?



            Answered 2021-Aug-23 at 09:03

            There are a couple of parameters under the deployer section that allows you to mount volumes (link):

            Source https://stackoverflow.com/questions/68863139


            TLS handshake timeout error while validating cluster on gcp using kops
            Asked 2021-Aug-24 at 10:58

            I want to create cluster on gcp using kops.

            For this, first I created gcs bucket. Then exported value for KOPS_STATE_STORE as



            Answered 2021-Aug-24 at 10:58

            I tried replicating using doc and was thrown a similar error when using the command kops validate cluster --wait 10m.
            But the error after TLS timeout error was “unexpected error during validation: error listing nodes: Unauthorized” .
            I then stopped the command and was able to resolve this error with the help of a solution from this stack post and now when I run kops validate cluster I get the expected output.

            Source https://stackoverflow.com/questions/68902134


            kops 'protectKernelDefaults' flag and 'EventRateLimit' admission plugin not working
            Asked 2021-Aug-23 at 17:02

            I am trying to implement some of the CIS security benchmark advices to kubernetes version 1.21.4 via kOps(1.21.0) for a self hosted Kubernetes on aws.

            However when i try protectKernelDefaults:true in kubelet config and EventRateLimit adminssion plugin kube api server config, the k8s cluster fails to come up. I am trying bring up a new cluster with these settings not trying to update any existing ones.

            kops cluster yaml that i am trying to use is



            Answered 2021-Aug-23 at 17:02

            The issue with default kernel settings was a bug in kOps. The installed did not set the sysctl settings that kubelet expects.

            The issue with the admission controller is simply a missing admission controller configuration file.

            Source https://stackoverflow.com/questions/68888608

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


            No vulnerabilities reported

            Install kops

            You can download it from GitHub.


            Documentation is in the /docs directory, and can be seen at kops.sigs.k8s.io.
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