140 lines
4.2 KiB
Markdown
140 lines
4.2 KiB
Markdown
# andy operator
|
||
A Kubernetes operator that can perform various actions:
|
||
|
||
- Place taints on nodes based on their names.
|
||
- Place default resource requests/limits on deployments that lack them (but you can also use exclusion words to ignore deployment requests/limits checks).
|
||
- Upgrade deployment images based on a predefined list of periodically checked tags (such as :latest, :master, etc.).
|
||
- Attempt to fix CrashLoopBackOff by recreating linked resources (such as secrets, if they have not updated from a third-party provider (e.g., Vault)).
|
||
|
||
Note: This is a college graduation project, so it may contain bugs and may not follow best practices.
|
||
|
||
## Getting Started
|
||
|
||
### Prerequisites
|
||
- go version v1.23.0+
|
||
- docker version 17.03+.
|
||
- kubectl version v1.11.3+.
|
||
- Access to a Kubernetes v1.11.3+ cluster.
|
||
|
||
### To Deploy on the cluster
|
||
**Build and push your image to the location specified by `IMG`:**
|
||
|
||
```sh
|
||
make docker-build docker-push IMG=<some-registry>/operator:tag
|
||
```
|
||
|
||
**NOTE:** This image ought to be published in the personal registry you specified.
|
||
And it is required to have access to pull the image from the working environment.
|
||
Make sure you have the proper permission to the registry if the above commands don’t work.
|
||
|
||
**Install the CRDs into the cluster:**
|
||
|
||
```sh
|
||
make install
|
||
```
|
||
|
||
**Deploy the Manager to the cluster with the image specified by `IMG`:**
|
||
|
||
```sh
|
||
make deploy IMG=<some-registry>/operator:tag
|
||
```
|
||
|
||
> **NOTE**: If you encounter RBAC errors, you may need to grant yourself cluster-admin
|
||
privileges or be logged in as admin.
|
||
|
||
**Create instances of your solution**
|
||
You can apply the samples (examples) from the config/sample:
|
||
|
||
```sh
|
||
kubectl apply -k config/samples/
|
||
```
|
||
|
||
>**NOTE**: Ensure that the samples has default values to test it out.
|
||
|
||
### To Uninstall
|
||
**Delete the instances (CRs) from the cluster:**
|
||
|
||
```sh
|
||
kubectl delete -k config/samples/
|
||
```
|
||
|
||
**Delete the APIs(CRDs) from the cluster:**
|
||
|
||
```sh
|
||
make uninstall
|
||
```
|
||
|
||
**UnDeploy the controller from the cluster:**
|
||
|
||
```sh
|
||
make undeploy
|
||
```
|
||
|
||
## Project Distribution
|
||
|
||
Following the options to release and provide this solution to the users.
|
||
|
||
### By providing a bundle with all YAML files
|
||
|
||
1. Build the installer for the image built and published in the registry:
|
||
|
||
```sh
|
||
make build-installer IMG=<some-registry>/operator:tag
|
||
```
|
||
|
||
**NOTE:** The makefile target mentioned above generates an 'install.yaml'
|
||
file in the dist directory. This file contains all the resources built
|
||
with Kustomize, which are necessary to install this project without its
|
||
dependencies.
|
||
|
||
2. Using the installer
|
||
|
||
Users can just run 'kubectl apply -f <URL for YAML BUNDLE>' to install
|
||
the project, i.e.:
|
||
|
||
```sh
|
||
kubectl apply -f https://raw.githubusercontent.com/<org>/operator/<tag or branch>/dist/install.yaml
|
||
```
|
||
|
||
### By providing a Helm Chart
|
||
|
||
1. Build the chart using the optional helm plugin
|
||
|
||
```sh
|
||
kubebuilder edit --plugins=helm/v1-alpha
|
||
```
|
||
|
||
2. See that a chart was generated under 'dist/chart', and users
|
||
can obtain this solution from there.
|
||
|
||
**NOTE:** If you change the project, you need to update the Helm Chart
|
||
using the same command above to sync the latest changes. Furthermore,
|
||
if you create webhooks, you need to use the above command with
|
||
the '--force' flag and manually ensure that any custom configuration
|
||
previously added to 'dist/chart/values.yaml' or 'dist/chart/manager/manager.yaml'
|
||
is manually re-applied afterwards.
|
||
|
||
## Contributing
|
||
// TODO(user): Add detailed information on how you would like others to contribute to this project
|
||
|
||
**NOTE:** Run `make help` for more information on all potential `make` targets
|
||
|
||
More information can be found via the [Kubebuilder Documentation](https://book.kubebuilder.io/introduction.html)
|
||
|
||
## License
|
||
|
||
Copyright 2025.
|
||
|
||
Licensed under the Apache License, Version 2.0 (the "License");
|
||
you may not use this file except in compliance with the License.
|
||
You may obtain a copy of the License at
|
||
|
||
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
||
Unless required by applicable law or agreed to in writing, software
|
||
distributed under the License is distributed on an "AS IS" BASIS,
|
||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
See the License for the specific language governing permissions and
|
||
limitations under the License.
|
||
|