druid-operator
druid-operator is a kubernetes operator for deploying Druid clusters. It is built using the operator-sdk .
How to build druid-operator docker image
Pre-built docker images are available in DockerHub. You can build docker image from source code using the command below.
druid-operator$ docker build -t druidio/druid-operator:0.0.1 .
Deploying druid-operator on kubernetes
# Setup Service Account
druid-operator$ kubectl create -f deploy/service_account.yaml
# Setup RBAC
druid-operator$ kubectl create -f deploy/role.yaml
druid-operator$ kubectl create -f deploy/role_binding.yaml
# Setup the CRD
druid-operator$ kubectl create -f deploy/crds/druid.apache.org_druids_crd.yaml
# Update the operator manifest to use the druid-operator image name (if you are performing these steps on OSX, see note below)
druid-operator$ sed -i 's|REPLACE_IMAGE|<druid-operator-image>|g' deploy/operator.yaml
# On OSX use:
druid-operator$ sed -i "" 's|REPLACE_IMAGE|<druid-operator-image>|g' deploy/operator.yaml
# Deploy the druid-operator
druid-operator$ kubectl create -f deploy/operator.yaml
# Check the deployed druid-operator
druid-operator$ kubectl describe deployment druid-operator
Deploy a druid cluster
An example spec to deploy a tiny druid cluster is included. For full details on spec please see pkg/api/druid/v1alpha1/druid_types.go
# deploy single node zookeeper
druid-operator$ kubectl apply -f examples/tiny-cluster-zk.yaml
# deploy druid cluster spec
druid-operator$ kubectl apply -f examples/tiny-cluster.yaml
Debugging Problems
# get druid-operator pod name
druid-operator$ kubectl get po | grep druid-operator
# check druid-operator pod logs
druid-operator$ kubectl logs <druid-operator pod name>
# check the druid spec
druid-operator$ kubectl describe druids tiny-cluster
# check if druid cluster is deployed
druid-operator$ kubectl get svc | grep tiny
druid-operator$ kubectl get cm | grep tiny
druid-operator$ kubectl get sts | grep tiny