https://github.com/chechiachang/cattle-operator

https://github.com/chechiachang/cattle-operator

Last synced: 23 days ago
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• Host: GitHub
• URL: https://github.com/chechiachang/cattle-operator
• Owner: chechiachang
• Created: 2019-05-25T06:44:35.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2019-05-25T08:35:29.000Z (over 5 years ago)
• Last Synced: 2023-03-03T12:56:00.894Z (over 1 year ago)
• Language: Go
• Size: 5.22 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
cattle-operator

===

Cattle-operator is an example operator generated by operator-sdk.

---

# Install operator-sdk Cli

https://github.com/operator-framework/operator-sdk/blob/master/doc/user/install-operator-sdk.md

```

$ go version

go version go1.12.4 linux/amd64

$ operator-sdk version

operator-sdk version: v0.8.0, commit: 78c472461e75e6c64589cfadf577a2004b8a26b3

```

---

# Get Started

https://github.com/operator-framework/getting-started

New operator

```

cd ${GOPATH}/src/github.com/chechiachang

export GO111MODULE=on

OPERATOR=cattle-operator

operator-sdk new ${OPERATOR}

$ tree -L 2

.

├── cattle-operator

│   ├── build

│   ├── cmd

│   ├── deploy

│   ├── go.mod

│   ├── go.sum

│   ├── pkg

│   ├── tools.go

│   ├── vendor

│   └── version

└── README.md

```

Add api and controller

```

API_VERSION=cattle.chechiachang.com/v1alpha1

CRD=Cattle

operator-sdk add api --api-version=${API_VERSION} --kind=${CRD}

operator-sdk add controller --api-version=${API_VERSION} --kind=${CRD}

```

# Update CRD definition

Add Spec to Cattle

```

vim pkg/apis/cattle/v1alpha1/cattle_types.go

type CattleSpec struct {

	Name      string   `json:"name"`

	Size      int32    `json:"size"`

	BeefParts []string `json:"beefParts"`

}

make generate

```

Add angus-cattle resource

```

cp deploy/crds/cattle_v1apha1_cattle_cr.yaml deploy/crds/angus_cattle_cr.yaml

vim deploy/crds/angus_cattle_cr.yaml

apiVersion: cattle.chechiachang.com/v1alpha1

kind: Cattle

metadata:

  name: angus-cattle

spec:

  # Add fields here

  name: angus

  beatParts:

  - chuck

  - rib

  - plate

  size: 3

```

# Update controller reconcile logic

```

vim pkg/controller/cattle/cattle_controller.go

make generate

```

---

# Test

Test on a local cluster

```

make local

```

# Build Image

```

make build push

```

# Deploy to kubernetes

Update image tag

```

make tag

```

(Grant extra privilege for serviceaccount rulebinding)

```

kubectl apply -f deploy/crds/cattle_v1alpha1_cattle_crd.yaml

kubectl apply -f deploy

```

# Apply angus-cattle CR

```

kubectl apply -f deploy/crds/angus_cattle_cr.yaml

```