NFS Server
NFS-based storage is recommended for providing persistent storage volumes to Kubernetes Clusters and backing up data of sandbox/pilot environments.
Installation
Prerequisites
Use this Storage size estimator to decide storage requirements
One Virtual machine running on the same network as the rest of the nodes, and is accessible by them. For recommended configuration of the VM refer to Hardware Requirements
Install
Download/copy this install script from https://github.com/OpenG2P/openg2p-deployment/blob/main/nfs-server/install-nfs-server.sh into the NFS server machine.
(Optional) Edit the script to change the local path for NFS storage, under the variable
nfsStorage.Make a note of this path as it will be required during the installation of the NFS client provisioner.Run the script with root privileges.
Give any name for the "environment" when asked. If NFS is specific to an environment you may specify that name.
Make sure to edit the firewall rules of this VM to enable incoming traffic to the NFS server port
tcp 2049and disable incoming traffic on all other ports (excluding SSH)
Backups
If your NFS holds critical data, there should be some mechanism to backup the same. On AWS you may use the 'snapshot' feature to schedule periodic (daily/weekly) backups of the VM running NFS.
The Persistent Volumes (PV) of Kubernetes create folders of corresponding names in the NFS storage. The folders are not deleted even if you delete the PV from the cluster. Hence, it is recommended that a cleanup exercise is carried out to free up space. To identify folders with their respective applications see the notes here.
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