161 lines
5.8 KiB
Markdown
161 lines
5.8 KiB
Markdown
[](https://travis-ci.com/github/seaweedfs/seaweedfs-operator)
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# SeaweedFS Operator
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This [Kubernetes Operator](https://kubernetes.io/docs/concepts/extend-kubernetes/operator/) is made to easily deploy SeaweedFS onto your Kubernetes-Cluster.
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The difference to [seaweedfs-csi-driver](https://github.com/seaweedfs/seaweedfs-csi-driver) is that the infrastructure (SeaweedFS) itself runs on Kubernetes as well (Master, Filer, Volume-Servers) and can as such easily scale with it as you need. It is also by far more resilent to failures then a simple systemD service in regards to handling crashing services or accidental deletes.
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By using `make deploy` it will deploy a Resource of type 'Seaweed' onto your current kubectl $KUBECONFIG target (the operator itself) which by default will do nothing unless you configurate it (see examples in config/samples/).
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Goals:
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- [x] Automatically deploy and manage a SeaweedFS cluster.
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- [x] Ability to be managed by other Operators.
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- [ ] Compability with [seaweedfs-csi-driver](https://github.com/seaweedfs/seaweedfs-csi-driver)
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- [x] Auto rolling upgrade and restart.
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- [x] Ingress for volume server, filer and S3, to support HDFS, REST filer, S3 API and cross-cluster replication.
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- [ ] Support all major cloud Kubernetes: AWS, Google, Azure.
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- [ ] Scheduled backup to cloud storage: S3, Google Cloud Storage , Azure.
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- [ ] Put warm data to cloud storage tier: S3, Google Cloud Storage , Azure.
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- [ ] Grafana dashboard.
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## Installation
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This operator uses `kustomize` to deploy. The installation process will install one for you if you do not have one.
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By default, the defaulting and validation webhooks are disabled. We strongly recommend that the webhooks be enabled.
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First clone the repository:
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```bash
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$ git clone https://github.com/seaweedfs/seaweedfs-operator --depth=1
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```
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To deploy the operator with webhooks enabled, make sure you have installed the `cert-manager`(Installation docs: https://cert-manager.io/docs/installation/) in your cluster, then follow the instructions in the `config/default/kustomization.yaml` file to uncomment the components you need.
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Lastly, change the value of `ENABLE_WEBHOOKS` to `"true"` in `config/manager/manager.yaml`
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Afterwards fire up:
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```bash
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$ make install
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```
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Then run the command to deploy the operator into your cluster:
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```bash
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$ make deploy
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```
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Verify if it was correctly deployed with:
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```bash
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$ kubectl get pods --all-namespaces
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```
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Which may return:
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```bash
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NAMESPACE NAME READY STATUS RESTARTS AGE
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kube-system coredns-f9fd979d6-68p4c 1/1 Running 0 34m
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kube-system coredns-f9fd979d6-x992t 1/1 Running 0 34m
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kube-system etcd-kind-control-plane 1/1 Running 0 34m
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kube-system kindnet-rp7wr 1/1 Running 0 34m
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kube-system kube-apiserver-kind-control-plane 1/1 Running 0 34m
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kube-system kube-controller-manager-kind-control-plane 1/1 Running 0 34m
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kube-system kube-proxy-dqfg2 1/1 Running 0 34m
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kube-system kube-scheduler-kind-control-plane 1/1 Running 0 34m
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local-path-storage local-path-provisioner-78776bfc44-7zvxx 1/1 Running 0 34m
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seaweedfs-operator-system seaweedfs-operator-controller-manager-54cc768f4c-cwz2k 2/2 Running 0 34m
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```
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See the next section for example usage - **__at this point you only deployed the Operator itself!__**
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### You need to also deploy an configuration to get it running (see next section)!
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## Configuration Examples
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- Please send us your use-cases / example configs ... this is currently empty (needs to be written)
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- For now see: https://github.com/seaweedfs/seaweedfs-operator/blob/master/config/samples/seaweed_v1_seaweed.yaml
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````
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apiVersion: seaweed.seaweedfs.com/v1
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kind: Seaweed
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metadata:
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name: seaweed1
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namespace: default
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spec:
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# Add fields here
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image: chrislusf/seaweedfs:2.90
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volumeServerDiskCount: 1
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hostSuffix: seaweed.abcdefg.com
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master:
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replicas: 3
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volumeSizeLimitMB: 1024
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volume:
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replicas: 1
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requests:
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storage: 2Gi
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filer:
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replicas: 2
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config: |
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[leveldb2]
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enabled = true
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dir = "/data/filerldb2"
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````
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## Maintenance and Uninstallation
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- TBD
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## Development
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Follow the instructions in https://sdk.operatorframework.io/docs/building-operators/golang/quickstart/
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```
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$ git clone https://github.com/seaweedfs/seaweedfs-operator
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$ cd seaweedfs-operator
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# register the CRD with the Kubernetes
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$ make deploy
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# build the operator image
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$ make docker-build
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# load the image into Kind cluster
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$ kind load docker-image chrislusf/seaweedfs-operator:v0.0.1
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# From another terminal in the same directory
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$ kubectl apply -f config/samples/seaweed_v1_seaweed.yaml
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```
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### Update the operator
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```
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# delete the existing operator
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$ kubectl delete namespace seaweedfs-operator-system
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# rebuild the operator image
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$ make docker-build
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# load the image into Kind cluster
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$ kind load docker-image chrislusf/seaweedfs-operator:v0.0.1
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# register the CRD with the Kubernetes
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$ make deploy
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```
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### develop outside of k8s
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```
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$ git clone https://github.com/seaweedfs/seaweedfs-operator
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$ cd seaweedfs-operator
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# register the CRD with the Kubernetes
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$ make install
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# run the operator locally outside the Kubernetes cluster
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$ make run ENABLE_WEBHOOKS=false
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# From another terminal in the same directory
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$ kubectl apply -f config/samples/seaweed_v1_seaweed.yaml
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```
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