Kubernetes Heketi Gluster

Setup a GlusterFS cluster with Heketi REST API on Kubernetes.

WARNING:

• This role is still in development
• Several tasks always show as changed, however it should be safe to rerun this role after it has successfully completed once
• Heketi authentication is not configured at present.

This is a two stage deployment following https://github.com/heketi/heketi/blob/v6.0.0/docs/admin/install-kubernetes.md

The first stage is to deploy a temporary bootstrap Heketi instance to create a storage volume on Gluster for Heketi's database. This Kubernetes deployment is called deploy-heketi.

The bootstrapped Heketi is then deleted and replace by the final Heketi Kubernetes deployment, called heketi.

Role Variables

Defaults: defaults/main.yml

Required variables:

• k8s_heketi_gluster_storage_device: The underlying raw storage device

Optional variables:

• k8s_heketi_gluster_default_storageclass: Should this be the default storage class for dynamically provisioned volumes, default False
• k8s_heketi_gluster_force_dedicated: Label and taint nodes this role is applied to to restrict use to storage only, default False
• k8s_heketi_gluster_tolerations: Kubernetes tolerations
• k8s_heketi_gluster_nodeselector: Kubernetes node-selector
• k8s_heketi_gluster_image: Gluster docker image
• k8s_heketi_gluster_kubectl: The kubectl binary including the full path if necessary
• k8s_heketi_gluster_namespace: Namespace for all components, default storage-heketi

Acknowledgements

This role was originally extracted from the KubeNow project: https://github.com/kubenow/KubeNow/tree/3defbe040ad24e50833d87fa9cc843319e5a9adb/playbooks/roles/heketi-gluster

git filter-branch --prune-empty --subdirectory-filter playbooks/roles/heketi-gluster/ master

Further additions including the two stage deployment come from https://github.com/heketi/heketi/blob/v6.0.0/extras/kubernetes/