backup_and_restoration_nfs.md

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Quickstart for NFS backups

Contents

• Install NFS server and resources
  • 1. Install by Helm
  • 2. Install by kubectl
• Obtain nfsServerAddress
• Create an NFS backup
  • 1. Configure the NFS server address
  • 2. Create a backup
  • 3. Verify the backup
• Restore the cluster from the NFS backup

Install NFS server and resources

1. Install by Helm

helm install demo charts/mysql-operator  --set nfsBackup.installServer=true  --set nfsBackup.volume.createLocalPV=true

Or manually create the PVC and run:

helm install demo charts/mysql-operator  --set nfsBackup.installServer=true  --set nfsBackup.volume.specifiedPVC=XXXX

XXX stands for the PVC name.

In this way, you can install the Pod and Service of the NFS server in the cluster while installing the operator.

2. Install by kubectl

kubectl apply -f config/samples/nfs_pv.yaml 
kubectl apply -f config/samples/nfs_server.yaml 

Obtain nfsServerAddress

For example:

kubectl get svc nfs-server --template={{.spec.clusterIP}}
10.96.253.82

You can use ClusterIp to perform NFS backup. The cluster IP address in the example is 10.96.253.82.

Create an NFS backup

1. Configure the NFS server address

# config/samples/mysql_v1beta1_backup.yaml
nfsServerAddress: "10.96.253.82"

2. Create a backup

kubectl apply -f config/samples/mysql_v1beta1_backup.yaml

Note: The backup CRD and MySQL cluster CRD must be in the same namespace.

3. Verify the backup

View the backup directory <cluster name>_<timestamp> as follows.

kubectl exec -it <pod name of nfs server> -- ls /exports
index.html  initbackup  sample_2022419101946

Restore the cluster from the NFS backup

Configure the nfsServerAddress attribute to the NFS server address in the mysql_v1alpha1_cluster.yaml file or mysql_v1beta1_cluster.yaml file.

...
restoreFrom: "sample_2022419101946"
nfsServerAddress: 10.96.253.82

Notice: restoreFrom stands for the path name of the backup. You can get it by checking the path loaded by the NFS server.

Restore cluster from NFS backup as follows.

kubectl apply -f config/samples/mysql_v1alpha1_cluster.yaml