Gluster operator for Kubernetes and OpenShift

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Interested in helping out? Take a look at the contributing doc to find out how.

Build

The operator is based on the Operator SDK. In order to build the operator, you first need to install the SDK. Instructions are here.

Once the SDK is installed, Anthill can be built via:

$ dep ensure --vendor-only

$ operator-sdk build docker.io/gluster/anthill
$ operator-sdk build docker.io/gluster/anthill
INFO[0000] Building Docker image docker.io/gluster/anthill
Sending build context to Docker daemon  152.1MB
Step 1/3 : FROM docker.io/centos:7.5.1804
7.5.1804: Pulling from library/centos
Digest: sha256:adbf1369c8dbeaa2bf9df0b891394e3ca09b5272a2fb54e0fadc6b14dd93fcad
Status: Downloaded newer image for centos:7.5.1804
 ---> 76d6bc25b8a5
Step 2/3 : USER nobody
 ---> Using cache
 ---> dc1dd738f9a4
Step 3/3 : ADD build/_output/bin/anthill /usr/local/bin/anthill
 ---> Using cache
 ---> cffc3a0ef59e
Successfully built cffc3a0ef59e
Successfully tagged gluster/anthill:latest
INFO[0002] Operator build complete.

Installation

Install the CRDs into the cluster:

$ kubectl apply -f deploy/crds/operator_v1alpha1_glustercluster_crd.yaml
customresourcedefinition.apiextensions.k8s.io "glusterclusters.operator.gluster.org" created

Install the service account, role, and rolebinding:

$ kubectl apply -f deploy/service_account.yaml
serviceaccount "anthill" created

$ kubectl apply -f deploy/role.yaml
role.rbac.authorization.k8s.io "anthill" created
rolebinding.rbac.authorization.k8s.io "anthill" created

There are two options for deploying the operator.

1. It can be run normally, inside the cluster. For this, see deploy/operator.yaml for a skeleton.

2. It can also be run outside the cluster for development purposes. This removes the need to push the container to a registry by running the operator executable locally. For this:

   $ OPERATOR_NAME=anthill operator-sdk up local --namespace=default
   INFO[0000] Running the operator locally.
   {"level":"info","ts":1542396040.2412076,"logger":"cmd","caller":"manager/main.go:57","msg":"Registering Components."}
   {"level":"info","ts":1542396040.2413611,"logger":"kubebuilder.controller","caller":"controller/controller.go:120","msg":"Starting EventSource","Controller":"glustercluster-controller","Source":"kind source: /, Kind="}
   ...