README
¶
DRBD flexvolume plugin for Kubernetes
Building
Requires Go 1.8 or higher and a configured GOPATH
mkdir -p $GOPATH/src/github.com/linbit/
cd $GOPATH/src/github.com/linbit/
git clone https://github.com/linbit/drbd-flexvolume
cd drbd-flexvolume
go get ./...
make
This will compile a binary targeting the local machine's architecture and
place it into the _build directory.
Installing
Place the generated binary named drbd under the following path on the kubelet and
kube-controller-manager nodes:
/usr/libexec/kubernetes/kubelet-plugins/volume/exec/linbit~drbd/
After installation, restarting kubelet process is required on each node for Kubernetes versions older than 1.8.
Usage
Resources must be created before attachment with DRBD Manage or drbd-flex-provision before they are available for this plugin to use.
The kube-controller-manager and all kubelets eligible to run containers must be part of the same DRBD Manage cluster. Volumes will be attached to the kubelet across the network via the DRBD Transport protocol, so they do not require local storage.
Kubelet nodes names must match the output of uname -n exactly. If they do not,
this may be overridden via the kubelet --hostname-override parameter
Please note that the Kubernetes PV name and the associated DRBD Manage resource name must match exactly in order for the volume to remain attached to the kubelet due to https://github.com/kubernetes/kubernetes/issues/44737
example.yaml, located in the root of this project, contains an example
configuration that attaches a resource named r0 to the container under the path
/data. Note that that the PV name is also named r0.
Directories