Store mysql root password in a Nomad variable.

utils/file_to_nomad_var.sh

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+#!/usr/bin/env bash
+# 
+# Loads file contents into a nomad variable.
+# 
+# Usage: file_to_nomad_var.sh <filename> <variablename> <var_key>
+# 
+# filename can be - for stdin.
+# 
+# read the var back out with:
+#  - nomad var get <variablename>
+#
+# From https://github.com/gerrowadat/nomad-homelab/blob/main/utilities/file_to_nomad_var.sh
+
+function print_usage() {
+  echo "Usage: ${0} <file or -> <nomad var> <var key>"
+}
+
+filename=$1
+nomad_var=$2
+var_key=$3
+
+if [ "${filename}" !=  "-" ];
+then
+  if [ ! -f "${filename}" ]
+  then
+    echo "${filename} does not exist"
+    exit
+  fi
+fi
+
+var_contents=$(cat ${filename})
+
+if [[ "${nomad_var}" == "" || "${var_key}" == "" ]];
+then
+  print_usage
+  exit
+fi
+
+echo "Copying ${filename} to ${nomad_var}:${var_key}..."
+
+nomad var put -force -in hcl - <<EOF
+path = "${nomad_var}"
+
+items {
+    ${var_key} = <<OMGUNIQUETOKEN
+${var_contents}
+OMGUNIQUETOKEN
+}
+EOF
+