artur-barsegyan / tarantool-operator

Tarantool Kubernetes Operator

The Tarantool Operator provides automation that simplifies the administration of Tarantool Cartridge based clusters on Kubernetes.

The Operator instroduces new API version tarantool.io/v1alpha1 and installs custom resources to for objects of custom types Cluster, Role, ReplicasetTemplate.

Resources

Cluster - represents single Tarantool Cartridge cluster

Role - represents Tarantool Cartridge user role

ReplicasetTemplate - is a template for StatefulSet's created as a members of Role

Resource ownerhip

Resources managed by Operator being deployed forms resource ownership hierarchy:

Resource ownership directly affects how k8s garbage collector works. If you execute delete command on parent resource then all it's dependants will be removed.

Deploying Tarantool Operator on Minikube

1. Install required software:

   • kubectl

   • minikube

2. Create minikube cluster

   minikube start --memory=4096

   You will need 4Gb of RAM allocated to minikube cluster to run examples

   Ensure Minikube is up and running:

   minikube status

   in case of success you will see output

   host: Running
   kubelet: Running
   apiserver: Running

3. Create operator resources

   kubectl create -f deploy/service_account.yaml
   kubectl create -f deploy/role.yaml
   kubectl create -f deploy/role_binding.yaml

4. Create Tarantool Operator CRD's

   kubectl create -f deploy/crds/tarantool_v1alpha1_cluster_crd.yaml
   kubectl create -f deploy/crds/tarantool_v1alpha1_role_crd.yaml
   kubectl create -f deploy/crds/tarantool_v1alpha1_replicasettemplate_crd.yaml

5. Start operator

   kubectl create -f deploy/operator.yaml

   ensure operator is up

   kubectl get pods --watch

   wait for tarantool-operator-xxxxxx-xx Pod's STATUS became Runnning

Examples

Distributed key value storage