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Systemd Service file for no-ip.com dynamic ip updater
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noip2.service
# Simple No-ip.com Dynamic DNS Updater
#
# By Nathan Giesbrecht (http://nathangiesbrecht.com)
#
# 1) Install binary as described in no-ip.com's source file (assuming results in /usr/local/bin)
# 2) Run sudo /usr/local/bin/noip2 -C to generate configuration file
# 3) Copy this file noip2.service to /etc/systemd/system/
# 4) Execute `sudo systemctl daemon-reload`
# 5) Execute `sudo systemctl enable noip2`
# 6) Execute `sudo systemctl start noip2`
#
# systemd supports lots of fancy features, look here (and linked docs) for a full list:
# http://www.freedesktop.org/software/systemd/man/systemd.exec.html
[Unit]
Description=No-ip.com dynamic IP address updater
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
Alias=noip.service
[Service]
# Start main service
ExecStart=/usr/local/bin/noip2
Restart=always
Type=forking
@Fixmetal
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Fixmetal commented Oct 4, 2020

Nice job it works and helps by just copy/pasting 👍

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ghost commented Oct 14, 2020

Thank you works perfectly. cheers

@aktasch
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aktasch commented Oct 18, 2020

Thank you very much

@iudexus
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iudexus commented Oct 27, 2020

I was so close, but no cigars..... now my noip2.service purrs like a kitten. Thank you!

@msdos
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msdos commented Dec 15, 2020

I was having this error as well in a Raspbian installation:

Can't gethostbyname for dynupdate.no-ip.com
Can't get our visible IP address from ip1.dynupdate.no-ip.com

Found a workaround, just add to noip2.service file:

[Service]
ExecStartPre=/bin/sh -c 'until ping -c1 google.com; do sleep 1; done;'

After rebooting, now it works. systemctl status noip2.service:

Dec 15 02:51:35 msdos sh[674]: ping: google.com: Temporary failure in name resolution
Dec 15 02:51:36 msdos sh[674]: ping: google.com: Temporary failure in name resolution
Dec 15 02:51:37 msdos sh[674]: PING google.com() 56 data bytes
Dec 15 02:51:37 msdos sh[674]: 64 bytes from (): icmp_seq=1 ttl=119 time=10.7 ms
Dec 15 02:51:37 msdos sh[674]: --- google.com ping statistics ---
Dec 15 02:51:37 msdos sh[674]: 1 packets transmitted, 1 received, 0% packet loss, time 0ms
Dec 15 02:51:37 msdos sh[674]: rtt min/avg/max/mdev = 
Dec 15 02:51:37 msdos systemd[1]: Started No-ip.com dynamic IP address updater.
Dec 15 02:51:37 msdos noip2[1030]: v2.1.9 daemon started with NAT enabled
Dec 15 02:51:41 msdos noip2[1030]: mydns.ddns.net was already set to xxx.xxx.xxx.xxx

Not exactly "pretty" but with all due respect, I've spent three hours using noip2.service files from the whole internet, from centos to slackware to arch linux with no solution.

@kingdavid72
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thank you so much
Wants=network-online.target
After=network-online.target
two lines fixed my problem

@NetMango
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Works perfectly wit TurnKey GNU/Linux 16.0 (Debian 10/Buster). Thank you.

@rst0git
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rst0git commented Feb 26, 2021

On RHEL, where SELinux is enabled, you might need to run:

restorecon /etc/systemd/system/noip2.service

@jwo-21
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jwo-21 commented Mar 13, 2021

Many thanks for this well-tuned solution Nathan!

@harrisclinton
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harrisclinton commented Mar 20, 2021 •
edited

On Ubuntu 20.04 I still get the

Can't gethostbyname for dynupdate.no-ip.com
Can't get our visible IP address from ip1.dynupdate.no-ip.com

on boot, despite trying

Wants=network-online.target
After=network-online.target

If anyone knows a more permanent solution than the one above from msdos, I'd love to try it.

Adding that line

[Service]
ExecStartPre=/bin/sh -c 'until ping -c1 google.com; do sleep 1; done;'

eliminates the error and eventually results in getting the correct IP, but it takes no less than 2 minutes and 10 seconds of trying to ping Google before there's a response. Should my network be taking that long to start up? Once it's running, the ping works at one try if I restart the service. It's just startup that takes literally minutes.

@belangp
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belangp commented Mar 30, 2021

Simple and works like a charm. Thank you!

@Sokoloft
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Thanks. Worked great!

@requa3r0
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thanks all good.
Dont forget to pkill noip2.....then check with noip2 -S
to seen no instances of the program is running, before launching the service

@AndiSusanto15
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AndiSusanto15 commented Jun 24, 2021 •
edited

thank you

@gustavozantut
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<3

@LingxiaoShawn
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https://bugzilla.redhat.com/show_bug.cgi?id=1431368
Can't gethostbyname for dynupdate.no-ip.com
Can't get our visible IP address from ip1.dynupdate.no-ip.com

for those that have this error on boot, just change replace:
[Unit]
Description=No-ip.com dynamic IP address updater
Wants=network-online.target
After=network-online.target

Thank you for snippets :)

works for me! Thank you.

@bralandealmeida
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Jun 21 12:59:07 raspberrypi systemd[1]: noip2.service: Start request repeated too quickly.
Jun 21 12:59:07 raspberrypi systemd[1]: Failed to start No-ip.com dynamic IP address updater.
Jun 21 12:59:07 raspberrypi systemd[1]: noip2.service: Unit entered failed state.
Jun 21 12:59:07 raspberrypi systemd[1]: noip2.service: Failed with result 'exit-code'.

Thanks. Works for me!

If anyone has the mentioned problem, make sure to kill all NOIP processes before starting the service. Or restart the machine.

ps aux | grep noip

@cr45hmurphy
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Jun 21 12:59:07 raspberrypi systemd[1]: noip2.service: Start request repeated too quickly.
Jun 21 12:59:07 raspberrypi systemd[1]: Failed to start No-ip.com dynamic IP address updater.
Jun 21 12:59:07 raspberrypi systemd[1]: noip2.service: Unit entered failed state.
Jun 21 12:59:07 raspberrypi systemd[1]: noip2.service: Failed with result 'exit-code'.

Thanks. Works for me!

If anyone has the mentioned problem, make sure to kill all NOIP processes before starting the service. Or restart the machine.

ps aux | grep noip

Thank you for this! Was racking my brain for over an hour on this one.

@EDIflyer
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EDIflyer commented Nov 21, 2021 •
edited

Thanks for this, @NathanGiesbrecht - unfortunately no matter what I do I can't get things to work without the 0.0.0.0 error on my Pi4...

Nov 21 16:32:15 pi400 systemd[1]: Starting No-IP Dynamic DNS Update Client...
Nov 21 16:32:15 pi400 noip2[528]: v2.1.9 daemon started with NAT enabled
Nov 21 16:32:15 pi400 noip2[519]: Can't gethostbyname for dynupdate.no-ip.com
Nov 21 16:32:15 pi400 noip2[519]: Can't get our visible IP address from ip1.dynupdate.no-ip.com
Nov 21 16:32:15 pi400 noip2[519]: ! Last_IP_Addr = 0.0.0.0, IP =
Nov 21 16:32:15 pi400 systemd[1]: Started No-IP Dynamic DNS Update Client.

I've tried various options in the [Unit] settings but all to no avail...

Wants=network-online.target
After=network-online.target

Wants=network-online.target systemd-resolved.service
After=network-online.target systemd-resolved.service

After=network.target
After=syslog.target

BindsTo=NetworkManager.service
After=network.target systemd-resolved.service NetworkManager.service

After=network.target systemd-resolved.service

The only thing that worked in the end was the workaround from @msdos - I just changed it from google.com to no-ip.com to make it feel a tiny bit less hacky! Presumably an issue in Rasperry Pi OS/Debian where it's reporting network as being online before it isn't?

@frock81
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frock81 commented Jan 15, 2022

Thanks.

@revathskumar
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with wireguard this worked for me

Wants=wg-quick@wg0.service network-online.target
After=wg-quick@wg0.service network-online.target

@mihairaducu
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[Service]
ExecStartPre=/bin/sh -c 'until ping -c1 google.com; do sleep 1; done;'

Man, you saved me a lot of time. Thanks

@beterhans
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thanks you so much no i can use it.

@DrTautology
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On Ubuntu 20.04 I still get the

Can't gethostbyname for dynupdate.no-ip.com
Can't get our visible IP address from ip1.dynupdate.no-ip.com

on boot, despite trying

Wants=network-online.target
After=network-online.target

If anyone knows a more permanent solution than the one above from msdos, I'd love to try it.

Adding that line

[Service]
ExecStartPre=/bin/sh -c 'until ping -c1 google.com; do sleep 1; done;'

eliminates the error and eventually results in getting the correct IP, but it takes no less than 2 minutes and 10 seconds of trying to ping Google before there's a response. Should my network be taking that long to start up? Once it's running, the ping works at one try if I restart the service. It's just startup that takes literally minutes.

On CentOS7 and adding that ExecStartPre line saved me from these errors:
Nov 21 16:32:15 pi400 noip2[519]: Can't gethostbyname for dynupdate.no-ip.com Nov 21 16:32:15 pi400 noip2[519]: Can't get our visible IP address from ip1.dynupdate.no-ip.com

@DanPen
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DanPen commented Nov 30, 2022 •
edited

[Service]
ExecStartPre=/bin/sh -c 'until ping -c1 google.com; do sleep 1; done;'

@msdos you're the boss. Worked like a charm on my Raspberry Pi OS Lite.

@macdja38
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macdja38 commented Apr 8, 2023

I made some modifications to this to support the 3.0 rust duc client.

Compile the 3.0 linux client using the instructions here: https://www.noip.com/support/knowledgebase/install-linux-3-x-dynamic-update-client-duc/#install_from_source

Also changed how the autorestart works as having it fail permanently if networking is not available is far from ideal.

# Simple No-ip.com Dynamic DNS Updater
#
# By Nathan Giesbrecht (http://nathangiesbrecht.com)
# Modified by Jake (https://github.com/macdja38)
#
# 1) Install binary as described in no-ip.com's source file (assuming results in /usr/local/bin)
# 2) Run sudo /usr/local/bin/noip -C to generate configuration file
# 3) Copy this file noip2.service to /etc/systemd/system/
# 4) Execute `sudo systemctl daemon-reload`
# 5) Execute `sudo systemctl enable noip`
# 6) Execute `sudo systemctl start noip`
#
# systemd supports lots of fancy features, look here (and linked docs) for a full list:
#   http://www.freedesktop.org/software/systemd/man/systemd.exec.html

[Unit]
Description=No-ip.com dynamic IP address updater
After=network.target
After=syslog.target

[Install]
WantedBy=multi-user.target
Alias=noip.service

[Service]
# Start main service
ExecStart=/usr/local/bin/noip-duc -g <domain-name> --username <username> --password <password>
Restart=always
RestartSec=5s
StartLimitIntervalSec=0

Essentially without StartLimitIntervalSec if you don't have internet when the service starts it'll enter a permanent failed state.
Setting StartLimitIntervalSec=0 means it'll try forever.

We don't want to be restarting it every 100ms and having it fail if there's a real error condition though. So we'll set RestartSec=5s.
Matching the default no-ip update rate.

See here for more info systemd/systemd#2416

Not sure if leaving a password in a systemd service is a great idea, if anyone has a better option I'd love to hear it!

(also renamed service to noip from noip2, maybe noip3 or noip-duc would be a better name)

@py660
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py660 commented May 28, 2023

why syslog? it doesn't exist on ubuntu 22 anymore (https://unix.stackexchange.com/questions/255887/how-to-install-enable-syslog-target)

@py660
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py660 commented May 28, 2023 •
edited

I had the same state and I thought there was something wrong but not necessarily. Then I found this link. (check Systemd Journal Basics section) https://www.loggly.com/ultimate-guide/linux-logging-with-systemd/ It seems this is the current standard for logs with Systemd systems. Inside the link, I found this rather clear statement: With systemd journal, there is no reason for a traditional syslog utility

@danielgora
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Thanks macdja38 for your changes for noip-duc 3.0!

I tested it and it works fine on OpenSuse Tumbleweed 20230503.

A couple minor modifications:

StartLimitIntervalSec was introduced in systemd 230 and must be placed in the [Unit] section, not the [Service] section.

In systemd 229 and earlier you need to use StartLimitInterval and StartLimitBurst in the [Service] section.

See:
https://unix.stackexchange.com/questions/463917/systemds-startlimitintervalsec-and-startlimitburst-never-work
https://lists.freedesktop.org/archives/systemd-devel/2017-July/039255.html

We don't want to be restarting it every 100ms and having it fail if there's a real error condition though. So we'll set RestartSec=5s.
Matching the default no-ip update rate.

Also the default update rate is 5 minutes, not 5 seconds, so the RestartSec should be 'RestartSec=5m'.

Below is an updated version for systemd 230 and later:

# Simple No-ip.com Dynamic DNS Updater
#
# By Nathan Giesbrecht (http://nathangiesbrecht.com)
# Modified by Jake (https://github.com/macdja38)
#
# 1) Install binary as described in no-ip.com's source file (assuming results in /usr/local/bin)
# 2) Run sudo /usr/local/bin/noip -C to generate configuration file
# 3) Copy this file noip2.service to /etc/systemd/system/
# 4) Execute `sudo systemctl daemon-reload`
# 5) Execute `sudo systemctl enable noip`
# 6) Execute `sudo systemctl start noip`
#
# systemd supports lots of fancy features, look here (and linked docs) for a full list:
#   http://www.freedesktop.org/software/systemd/man/systemd.exec.html

[Unit]
Description=No-ip.com dynamic IP address updater
After=network.target
After=syslog.target
StartLimitIntervalSec=0

[Install]
WantedBy=multi-user.target
Alias=noip.service

[Service]
# Start main service
ExecStart=/usr/local/bin/noip-duc -g <domain-name> --username <username> --password <password>
Restart=always
RestartSec=5m

@davidrjonas
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Author of noip-duc v3 here. Great to see the interest!

I like the restart changes, I'll get them incorporated into the package. In 3.0.0-beta.7 (2023-08-08) it will no longer exit if it cannot resolve hostnames for checking the current IP during start up.

As for the configuration, a better way to handle it so that you don't need to put your password in the unit file it to use environment variables and the systemd Service setting EnvironmentFile. Nearly every command line option has an equivalent env var. You can find them all in the help as well as the README.md.

/etc/noip-duc.env

NOIP_USERNAME=example-username
NOIP_PASSWORD=eXamPle-Pas5w0r&
NOIP_HOSTNAMES=h1.example.com,h2.example.com

Addition to unit file

[Service]
EnvironmentFile=/etc/noip-duc.env

By using EnvironmentFile= instead of EnvironmentFile=- the service will not start unless the file exists, in that way the service will not take any resources unless configured.

Please send in other suggestions or recommendations! I'm so happy to see the interest here!

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