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Tip

You can skip this step if your Kubernetes cluster deployment is on a single VM.

...

Use local directory

Run the following command as root:

Code Block
languagebash
#id is ubuntu
sudo mkdir -p /dockerdata-nfs
sudo chmod 777 /dockerdata-nfs
Use separate volume

Following instruction from Create an OpenStack Volume to:

(where the VM Instance is the one that you have chosen)

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Execute the following commands :as ubuntu user.

Code Block
languagebash
titlenfs server
sudo apt update
sudo apt  install nfs-kernel-server

sudo vi /etc/exports
# append the following
/dockerdata-nfs *(rw,no_root_squash,no_subtree_check)

sudo vi /etc/fstab 
# append the following
/home/ubuntu/dockerdata-nfs /dockerdata-nfs    none    bind  0  0

sudo service nfs-kernel-server restart
Expand
titleAn example of validate NFS server running

$ ps -ef|grep nfs
root 2205 2 0 15:59 ? 00:00:00 [nfsiod]
root 2215 2 0 15:59 ? 00:00:00 [nfsv4.0-svc]
root 13756 2 0 18:19 ? 00:00:00 [nfsd4_callbacks]
root 13758 2 0 18:19 ? 00:00:00 [nfsd]
root 13759 2 0 18:19 ? 00:00:00 [nfsd]
root 13760 2 0 18:19 ? 00:00:00 [nfsd]
root 13761 2 0 18:19 ? 00:00:00 [nfsd]
root 13762 2 0 18:19 ? 00:00:00 [nfsd]
root 13763 2 0 18:19 ? 00:00:00 [nfsd]
root 13764 2 0 18:19 ? 00:00:00 [nfsd]
root 13765 2 0 18:19 ? 00:00:00 [nfsd]
ubuntu 13820 23326 0 18:19 pts/0 00:00:00 grep --color=auto nfs
$


On the other VMs (Kubernetes Worker Nodes)

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On each of the Kubernetes worker nodes, mount the /dockerdata-nfs folder. Run the followings as ubuntu user.

Code Block
languagebash
titlemount nfs mount
sudo apt update
sudo apt install nfs-common -y
sudo mkdir /dockerdata-nfs
sudo chmod 777 /dockerdata-nfs


# Option 1:
sudo mount -t nfs -o proto=tcp,port=2049 <hostname or IP address of NFS server>:/dockerdata-nfs /dockerdata-nfs
sudo vi /etc/fstab
# append the following
<hostname or IP address of NFS server>:/dockerdata-nfs /dockerdata-nfs   nfs    auto  0  0


# Option 2:
sudo vi /etc/fstab
# append the following line.
<hostname or IP address of NFS server>:/dockerdata-nfs /dockerdata-nfs   nfs    auto  0  0
# run the following line
sudo mount -a

...