Add ddclient to documentation

- Update README.md
- Update docs/configuring-playbook-dynamic-dns.md: remove reference to deceased Google Domains etc.
- Update docs/configuring-playbook.md: move documentation to server connectivity section
- Update docs/container-images.md: add linuxserver/ddclient

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

README.md

@@ -65,6 +65,7 @@ Services that run on the server to make the various parts of your installation w
 | [ma1sd](https://github.com/ma1uta/ma1sd) | x | Matrix Identity Server | [Link](docs/configuring-playbook-ma1sd.md)
 | [Exim](https://www.exim.org/) | ✓ | Mail server, through which all Matrix services send outgoing email (can be configured to relay through another SMTP server) | [Link](docs/configuring-playbook-email.md) |
 | [Dimension](https://github.com/turt2live/matrix-dimension) | x | An open source integration manager for Matrix clients | [Link](docs/configuring-playbook-dimension.md) |
+| [ddclient](https://github.com/linuxserver/docker-ddclient) | x | Dynamic DNS | [Link](docs/configuring-playbook-dynamic-dns.md) |
 | [Sygnal](https://github.com/matrix-org/sygnal) | x | Push gateway | [Link](docs/configuring-playbook-sygnal.md) |
 | [ntfy](https://ntfy.sh) | x | Push notifications server | [Link](docs/configuring-playbook-ntfy.md) |
 

docs/configuring-playbook-dynamic-dns.md

@@ -1,24 +1,31 @@
 # Setting up Dynamic DNS (optional)
 
-## Setup
+The playbook can configure Dynamic DNS with [ddclient⁠](https://github.com/ddclient/ddclient) for you. It is a Perl client used to update dynamic DNS entries for accounts on Dynamic DNS Network Service Provider.
 
 Most cloud providers / ISPs will charge you extra for a static IP address. If you're not hosting a highly reliable homeserver you can workaround this via dynamic DNS.
 
-To set this up, you'll need to get the username/password from your DNS provider. For google domains, this process is described [here](https://support.google.com/domains/answer/6147083).
+## Prerequisite
 
-After you've gotten the proper credentials you can add the following config to your `inventory/host_vars/matrix.example.com/vars.yml`:
+You'll need to get a username and password from your DNS provider. Please consult with the provider about how to retrieve them.
+
+## Adjusting the playbook configuration
+
+To enable dynamic DNS, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
 
 ```yaml
 matrix_dynamic_dns_enabled: true
 
 matrix_dynamic_dns_domain_configurations:
-  - provider: domains.google.com
+  - provider: example.net
     protocol: dyndn2
-    username: XXXXXXXXXXXXXXXX
-    password: XXXXXXXXXXXXXXXX
+    username: YOUR_USERNAME_HERE
+    password: YOUR_PASSWORD_HERE
     domain: "{{ matrix_domain }}"
 ```
 
+## Installing
+
+After configuring the playbook, run the [installation](installing.md) command: `just install-all` or `just setup-all`
 
 ## Additional Reading
 

docs/configuring-playbook.md

@@ -37,8 +37,6 @@ When you're done with all the configuration you'd like to do, continue with [Ins
 
 - [Setting up Etherpad](configuring-playbook-etherpad.md) (optional)
 
-- [Setting up Dynamic DNS](configuring-playbook-dynamic-dns.md) (optional)
-
 - [Enabling metrics and graphs (Prometheus, Grafana) for your Matrix server](configuring-playbook-prometheus-grafana.md) (optional)
 
 - [Enabling metrics and graphs for NginX logs](docs/configuring-playbook-prometheus-nginxlog.md) (optional)
@@ -81,6 +79,8 @@ When you're done with all the configuration you'd like to do, continue with [Ins
 
 - [Adjusting email-sending settings](configuring-playbook-email.md) (optional)
 
+- [Setting up Dynamic DNS](configuring-playbook-dynamic-dns.md) (optional)
+
 - [Setting up Hydrogen](configuring-playbook-client-hydrogen.md) - a new lightweight Matrix client with legacy and mobile browser support (optional)
 
 - [Setting up Cinny](configuring-playbook-client-cinny.md) - a web client focusing primarily on simple, elegant and secure interface (optional)

docs/container-images.md

@@ -94,6 +94,8 @@ These services are not part of our default installation, but can be enabled by [
 
 - [turt2live/matrix-dimension](https://hub.docker.com/r/turt2live/matrix-dimension) - the [Dimension](https://dimension.t2bot.io/) integration manager (optional)
 
+- [linuxserver/ddclient](https://hub.docker.com/r/linuxserver/ddclient) - [ddclient](https://github.com/linuxserver/docker-ddclient) used to update dynamic DNS entries for accounts on Dynamic DNS Network Service Provider (optional)
+
 - [jitsi/web](https://hub.docker.com/r/jitsi/web) - the [Jitsi](https://jitsi.org/) web UI (optional)
 
 - [jitsi/jicofo](https://hub.docker.com/r/jitsi/jicofo) - the [Jitsi](https://jitsi.org/) Focus component (optional)