Installing Heptio-Ark (disaster recovery solution for Kubernetes) store data on local

Heptio ark gives you tools to backup and restore your Kubernetes cluster resources and persistent volume.

git clone https://github.com/sachinar/ark.git

Install ark command on kubernetes master with the help following link.

wget https://github.com/heptio/ark/releases/download/v0.9.1/ark-v0.9.1-linux-amd64.tar.gz
tar -xvf ark-v0.9.1-linux-amd64.tar.gz
mv ark /usr/bin/ark

Now go in directory ark/minio & check file 10-minio-deployment.yaml nodeAffinity is defined in file. Change value from worker1 to node label, so that this data will be store on that node.

affinity:
        nodeAffinity:
           requiredDuringSchedulingIgnoredDuringExecution:
             nodeSelectorTerms:
             - matchExpressions:
               - key: node
                 operator: In
                 values:
                 - worker1

This worker1 have to change.

Now deploy this directory in kubernetes cluster using,

kubectl create -f minio/

Now see it is deployed or not using,

kubectl get pods -n heptio-ark

Here heptio-ark is namespace where ark deployment is deployed.

Use to see where minio service is running,

kubectl get svc -n heptio-ark 

Check NodePort where it is running & access using NodeIP.

Now for taking backup:-

Let’s consider deployment or statefulset is running in kubernetes.

This is an example of mongodb, where it is running as a statefulset,

kubectl annotate pod/mongo-0 backup.ark.heptio.com/backup-volumes=datadir

Annotate pods in kubernetes deployment or in statefulset using this command.

Here datadir is volume where deployment/statefulset are storing data.

Now take backup using command.

ark backup create mongo-backup --selector app=mongo --snapshot-volumes

To check volume details,

ark backup describe mongo-backup --volume-details 

Here it will show the output of In-progress/Completed/Failed.

To check logs of backup,

ark backup logs mongo-backup

Now for Restoring backup:-

Use this

ark restore create  mongo-restore   --from-backup mongo-backup

Here it need from which backup we are restoring backup.

To check status,

ark restore describe mongo-restore --volume-details

To check restore logs,

ark restore logs mongo-restore