Ubuntu guide edit

Author: sus-admin

_posts/2024-12-11-Cobbler-v3.3.7-Ubuntu-Deployment-Guide.md

@@ -36,8 +36,7 @@ Create the new Cobbler template and snippets necessary to generate the `cloud-in
 
 - `/var/lib/cobbler/templates/cloud-init_user-data`
 
-{% capture file %}```shell
-{% include cloud-init_user-data.txt path="_includes/cloud-init_user-data.txt" %}```{% endcapture %}
+{% capture file %}{% include cloud-init_user-data.txt path="_includes/cloud-init_user-data.txt" %}{% endcapture %}
 {% assign lines = file | newline_to_br | strip_newlines | split: "<br />" %}
 {% for line in lines %}{{ line | prepend: "      " }}
 {% endfor %}
@@ -46,38 +45,34 @@ Create the new Cobbler template and snippets necessary to generate the `cloud-in
 
 - `/var/lib/cobbler/snippets/cloud-init_hostname`
 
-{% capture file %}```shell
-{% include cloud-init_hostname.txt path="_includes/cloud-init_hostname.txt" %}```{% endcapture %}
+{% capture file %}{% include cloud-init_hostname.txt path="_includes/cloud-init_hostname.txt" %}{% endcapture %}
 {% assign lines = file | newline_to_br | strip_newlines | split: "<br />" %}
 {% for line in lines %}{{ line | prepend: "      " }}
 {% endfor %}
 
 - `/var/lib/cobbler/snippets/cloud-init_network`
 
-{% capture file %}```shell
-{% include cloud-init_network.txt path="_includes/cloud-init_network.txt" %}```{% endcapture %}
+{% capture file %}{% include cloud-init_network.txt path="_includes/cloud-init_network.txt" %}{% endcapture %}
 {% assign lines = file | newline_to_br | strip_newlines | split: "<br />" %}
 {% for line in lines %}{{ line | prepend: "      " }}
 {% endfor %}
 
-> This section assumes that, for automated Cobbler System deployments (not Profiles...), each system interface defined should have the corresponding MAC address defined, a standard requirement in Cobbler. Less intuitively, this solution only adds DNS servers to static interfaces with an IP address defined, since DNS servers are set per-interface in Ubuntu cloud-init/netplan, but per-system in Cobbler.
+> The above section should resemble the standard [netplan](https://netplan.readthedocs.io/en/latest/netplan-yaml/) YAML configuration file for Ubuntu once generated.
 >
-> Also, the above section should resemble the standard [netplan](https://netplan.readthedocs.io/en/latest/netplan-yaml/) YAML configuration file for Ubuntu once generated. 
+> **ASSUMPTIONS:** For automated Cobbler System deployments (not Profiles...), each system interface defined should have the corresponding MAC address defined, a standard requirement in Cobbler. Less intuitively, this solution only adds DNS servers to static interfaces with an IP address defined, since DNS servers are set per-system in Cobbler, but per-interface in Ubuntu cloud-init/netplan; the above snippet will revert any interface to DHCP if it is set to static but has no IP defined.
 
 Create 2 Cobbler sync-triggers to correct the GRUB and PXELINUX boot configurations to support Ubuntu `cloud-init` installations, which will run each time the `cobbler sync` action is performed:
 
 - `/var/lib/cobbler/triggers/sync/post/fix-ubuntu-profiles-GRUB_PXE.sh`
 
-{% capture file %}```shell
-{% include fix-ubuntu-profiles-GRUB_PXE.sh.txt path="_includes/fix-ubuntu-profiles-GRUB_PXE.sh.txt" %}```{% endcapture %}
+{% capture file %}{% include fix-ubuntu-profiles-GRUB_PXE.sh.txt path="_includes/fix-ubuntu-profiles-GRUB_PXE.sh.txt" %}{% endcapture %}
 {% assign lines = file | newline_to_br | strip_newlines | split: "<br />" %}
 {% for line in lines %}{{ line | prepend: "      " }}
 {% endfor %}
 
 - `/var/lib/cobbler/triggers/sync/post/fix-ubuntu-systems-GRUB_PXE.sh`
 
-{% capture file %}```shell
-{% include fix-ubuntu-systems-GRUB_PXE.sh.txt path="_includes/fix-ubuntu-systems-GRUB_PXE.sh.txt" %}```{% endcapture %}
+{% capture file %}{% include fix-ubuntu-systems-GRUB_PXE.sh.txt path="_includes/fix-ubuntu-systems-GRUB_PXE.sh.txt" %}{% endcapture %}
 {% assign lines = file | newline_to_br | strip_newlines | split: "<br />" %}
 {% for line in lines %}{{ line | prepend: "      " }}
 {% endfor %}