Cloud-Native Devops Best Practices(2) - GitOps + OpenKruise CloneSet

    With Git at the core of the delivery pipeline, every developer can submit Pull Requests and use Git to accelerate and simplify application deployment and maintenance tasks for Kubernetes. By using a simple tool like Git, developers can more efficiently focus on creating new features rather than operations-related tasks (e.g., application installation, configuration, migration, etc.).

    • Install Kubernetes Cluster, Since v1.0.0 (alpha/beta), OpenKruise requires Kubernetes version >= 1.16.
    • Install Tekton, Reference , Tekton is a Google open source Kubernetes native framework for creating continuous integration and continuous deployment/delivery (CI/CD) systems.

    Install OpenKruise（Enable: TemplateNoDefaults）

    Openkruise installed by default will inject the default value of pod / PVC template, which will conflict with the sync judgment logic of Argo CD. Therefore, when installing openkruise, you need to open gates TemplateNoDefaults, as follows:

    Configure CloneSet Argo-cd , With this configuration argo-cd is able to perform a healthy check of the CloneSet, such as whether the CloneSet is published and whether the Pods are ready, as follows：

    OpenKruise internal CRD resources in addition to CloneSet, others such as: Advanced StatefulSet, SidecarSet, etc. can be similar to the above way to achieve Custom Resource Health.

    Argo-CD together with Tekton Pipeline is a popular DevOps practice and integrate well with CI process. Such practice requires storing the Argo-cd admin secret in K8S Secret CRD (), which in turn can be used in Tekton Pipeline, as follows:

    The results can be viewed via the argo-cd cli, as follows:

    guestbook

    OpenKruise is more of a Kubernetes level extended capability, such as in-place upgrade, preImageDownload, etc. So many community users using OpenKruise in production environments have some additional costs, need to integrate or self-research container PaaS. The main purpose of this article is to combine some of the best Paas solutions in the community with OpenKruise, so that as many people as possible get to enjoy the dividends of cloud-native at a lower cost.