OpenVPN client config discovery for Zabbix LLD

openvpn_client_discovery.sh

#!/usr/bin/env bash

VPN_SERVER=$( hostname --fqdn )
CLIENT_CONFIG_DIR="$1"
[ -z "${CLIENT_CONFIG_DIR}" ] && CLIENT_CONFIG_DIR='/etc/openvpn/ccd'

{
  echo "{"
  echo "  \"data\":["
  for line in $( ls -1 "${CLIENT_CONFIG_DIR}" 2> /dev/null ); do
    CLIENT_CN=$(echo $line|sed -e 's/\\/\\\\/g' -e 's|/|\\/|g')
    CLIENT_VPN_IP=$(cat "${CLIENT_CONFIG_DIR}"/$line|grep ifconfig-push|awk '{print $2}')
    echo "  {"
    echo "    \"{#VPN_SERVER}\":\"${VPN_SERVER}\","
    echo "    \"{#CLIENT_CN}\":\"${CLIENT_CN}\","
    echo "    \"{#CLIENT_VPN_IP}\":\"${CLIENT_VPN_IP}\""
    echo "  },"
  done | sed -e '$d'
  echo "  }"
  echo "  ]"
  echo "}"
}