7+ new projects using shell-operator in May/Jun'21

[shurup]

Hi everyone! Here are some interesting projects on GitHub that are based on shell-operator. Not all of them are brand new — it's just now when we discovered them to share with a wider community. Hopefully, they will inspire others to build their own tool using the power of shell-operator.

1. Vulnerabilities monitoring in Docker images & pods auto-labeler

Vincent (@fleeto), who is a member of Istio project, has used shell-operator to build a couple of interesting tools.

• trivy-scanner — to find vulnerabilities in the images deployed in your Kubernetes. This is a script that is executed every 5 minutes to check all images labeled as trivy=true with trivy scanner and provide you metrics with discovered vulnerabilities and their severity levels;
• auto-labeler — to continuously copy specified nodes' labels to the pods matched by matchExpressions in labelSelector.

Both scripts are written in Python.

2. Mobile core network implementation on Amazon EKS

opensource-4g-core-eks is a repo that contains the code templates used in the Opensource Mobile Packet Core Implementation on Amazon EKS blog post. While the post describes implementation steps for building a 4G core network, shell-operator is used for:

• aws-secondary-ip-sync-controller;
• multus-svc-watcher-route53-controller.

3. DNS servers' updater in Agile Stacks toolset

Deep Horizon is a component of the AgileStacks Automation Platform. This component was created to keep RFC 2136 compliant DNS servers updated with Ingress and Service IPs. In Deep Horizon, shell-operator is used to perform actions (via nsupdate) when Ingress or LoadBalancer objects are updated, added, or deleted.

4. Cluster controller for Rancher

@travisghansen has created rancher-to-argocd-controller — "a simple controller to automatically create an Argocd cluster for every cluster in a Rancher installation." Shell-operator is used to execute a Bash script every 15 minutes.

5. Shell controller of namespaces

namespacer by @keelson is a handy example of using shell-controller to perform some actions (adding labels and annotations via a Bash script) on each Kubernetes namespace when it is created.

6. Pod monitor hook

This hook belongs to the "learning Google Cloud Platform" repo by @bobbae. It is a good example of how you can use shell-operator to build your own operator that watches for pods in all namespaces.

7. ECR-Operator

@wrasdf has made an operator for Amazon ECR (Elastic Container Registry). The shell-operator hook is used for logging the add/modify/delete events for these registries.

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Many thanks to all people involved! 🤗 Feel free to share your examples of using shell-operator as well 👍

P.S. You might be interested in our previous collection of such projects as well.