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Hi, I am Vladimir Smagin, SysAdmin and Kaptain. Telegram Email / GIT / RSS / GPG

OpenVPN dynamic local domain names with dnsmasq

№ 9436 В разделе Sysadmin от September 25th, 2018,
В подшивках: ,

There two ways:

  • Generate full config once a time
  • Generate many configs separately for all clients

Way #1

pip install openvpn_status

from openvpn_status import parse_status

hostDomain = "vpn"

with open('/etc/openvpn/openvpn-status.log') as logfile:
    status = parse_status(

for client in status.routing_table:
    domain = status.routing_table[client].common_name + "." + hostDomain
    address = status.routing_table[client].virtual_address
    print("address=/{}/{}".format(domain, address))

Way #2

Add to /etc/openvpn/server.conf these lines:

script-security 3 system
client-connect /opt/ovpn-dns/
client-disconnect /opt/ovpn-dns/

Script /opt/ovpn-dns/

echo "address=/$common_name.vpn/$ifconfig_pool_remote_ip" > /etc/dnsmasq.d/$common_name.conf
/bin/systemctl restart dnsmasq

Script /opt/ovpn-dns/

rm -f /etc/dnsmasq.d/$common_name.conf
/bin/systemctl restart dnsmasq

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