feat: script for provisioning a volume (claim)

provision-volume-claim.sh

@@ -0,0 +1,115 @@
+#!/bin/bash
+# This creates a persistent volume and claim.
+# Params:
+# -p|--pv <pv-name> -c|--pvc <pvc-name> -s|--nfs-server <nfs-server> -n|--nfs-path <nfs-path>
+# pv-name - the name used for the persistent volume
+# pvc-name - the name used for the claim
+# nfs-server - IP or hostname of the NFS server
+# nfs-path - Path on the NFS server
+
+PV_NAME=
+PVC_NAME=
+NFS_SERVER=
+NFS_PATH=
+SIZE=
+
+usage()
+{
+echo "Usage: provision-volume-claim.sh < -p | --pv-name name > < -c | --pvc-name name >
+                        < -n | --nfs-server server > 
+                        < -m | --nfs-path path >
+                        < -s | --size size >"
+  exit 2
+}
+
+PARSED_ARGUMENTS=$(getopt -a -n provision-volume-claim -o p:c:n:m:s: --long pv-name:,pvc-name:,nfs-server:,nfs-path:,size: -- "$@")
+VALID_ARGUMENTS=$?
+if [ "$VALID_ARGUMENTS" != "0" ]; then
+  usage
+fi
+
+eval set -- "$PARSED_ARGUMENTS"
+while :
+do
+  case "$1" in
+    -p | --pv-name)    PV_NAME="$2"    ; shift 2 ;;
+    -c | --pvc-name)   PVC_NAME="$2"   ; shift 2 ;;
+    -n | --nfs-server) NFS_SERVER="$2" ; shift 2 ;;
+    -m | --nfs-path)   NFS_PATH="$2"   ; shift 2 ;;
+    -s | --size)       SIZE="$2"       ; shift 2 ;;
+    # -- means the end of the arguments; drop this, and break out of the while loop
+    --) shift; break ;;
+    *) echo "Unexpected option: $1 - this should not happen."
+       usage ;;
+  esac
+done
+
+if [ -z $PV_NAME ] || [ -z $PVC_NAME ] || [ -z $NFS_SERVER ] || [ -z $NFS_PATH ] || [ -z $SIZE ];
+then
+  echo "Missing required option(s)"
+  usage
+fi
+
+PV_MANIFEST=$(mktemp /tmp/pvc.XXXXXXX) || exit 1
+PVC_MANIFEST=$(mktemp /tmp/pv.XXXXXXX) || exit 1
+
+# Create the PV manifest
+cat > $PV_MANIFEST << EOM
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: $PV_NAME
+  labels:
+    is_nf_pv: "yes"
+spec:
+  capacity:
+    storage: $SIZE
+  volumeMode: Filesystem
+  accessModes:
+    - ReadWriteMany
+  persistentVolumeReclaimPolicy: Recycle
+  storageClassName: slow
+
+  mountOptions:
+    - hard
+    - nfsvers=4.1
+  nfs:
+    path: $NFS_PATH
+    server: $NFS_SERVER
+EOM
+echo "Created PV Manifest $PV_MANIFEST:"
+cat $PV_MANIFEST
+
+# kubectl apply -f $PV_MANIFEST || exit 1
+
+# Create the pvc manifest
+cat > $PVC_MANIFEST << EOM
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: $PVC_NAME
+spec:
+  accessModes:
+    - ReadWriteMany
+  volumeMode: Filesystem
+  resources:
+    requests:
+      storage: $SIZE
+  storageClassName: slow
+  selector:
+    matchLabels:
+      is_nf_pv: "yes"
+EOM
+echo "Created PVC Manifest: $PVC_MANIFEST"
+cat $PVC_MANIFEST
+
+# Generate cleanup script
+cat > cleanup-volume-claim.sh << EOM
+#!/bin/bash
+kubectl delete pvc $PVC_NAME
+kubectl delete pv $PV_NAME
+EOM
+chmod +x cleanup-volume-claim.sh
+
+kubectl apply -f $PV_MANIFEST || exit 1
+kubectl apply -f $PVC_MANIFEST || exit 1