docs(tailscale) Update How To Guide & remove TrueNAS references (#32925)

**Description**
<!--
Please include a summary of the change and which issue is fixed. Please
also include relevant motivation and context. List any dependencies that
are required for this change.
-->

⚒️ Update Tailscale How to Guide to remove TrueNAS references.

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [ ] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code
- [x] 📜 Documentation Changes

**🧪 How Has This Been Tested?**
<!--
Please describe the tests that you ran to verify your changes. Provide
instructions so we can reproduce. Please also list any relevant details
for your test configuration
-->

**📃 Notes:**
<!-- Please enter any other relevant information here -->

**✔️ Checklist:**

- [ ] ⚖️ My code follows the style guidelines of this project
- [ ] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [x] 📄 I have made changes to the documentation
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [ ] ⬆️ I increased versions for any altered app according to semantic
versioning
- [x] I made sure the title starts with `feat(chart-name):`,
`fix(chart-name):`, `chore(chart-name):`, `docs(chart-name):` or
`fix(docs):`

**➕ App addition**

If this PR is an app addition please make sure you have done the
following.

- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

---

_Please don't blindly check all the boxes. Read them and only check
those that apply.
Those checkboxes are there for the reviewer to see what is this all
about and
the status of this PR with a quick glance._

---------

Signed-off-by: Addison McDermid <admin@itconstruct.com.au>
Signed-off-by: Alfred Göppel <43101280+alfi0812@users.noreply.github.com>
Co-authored-by: Alfred Göppel <43101280+alfi0812@users.noreply.github.com>

charts/stable/tailscale/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/tailscale
   - https://hub.docker.com/r/tailscale/tailscale
 type: application
-version: 10.12.0
+version: 10.12.0

charts/stable/tailscale/docs/How-To-Guide.md

@@ -3,7 +3,6 @@ title: How-To
 ---
 
 This is a quick how-to or setup-guide to use Tailscale on Talos.
-This can be applied to other systems but this specific guide is Talos on TrueNAS specific with the prerequisites.
 
 :::caution
 
@@ -17,20 +16,8 @@ This guide doesn't cover using Tailscale with individual applications. While the
 - Tailscale Truecharts Chart
 - Tailscale DNS setup for Talos Cluster Domain
 
-## Prerequisites (LAN access only)
 
-For proper access to your local network (LAN), this chart requires two `sysctl` values set on your TrueNAS or system.
-For TrueNAS SCALE the way to change these values are inside `System Settings` then `Advanced`.
-On that screen you add the following two values:
-
-- `net.ipv4.ip_forward`
-- `net.ipv4.conf.all.src_valid_mark`
-
-Set them to `1` and `Enabled`
-
-![sysctl](./img/Sysctl.png)
-
-Also prepare your Tailscale Auth Key for your setup, easy to generate on the page below
+Generate a Tailscale Auth Key for your setup, easy to generate on the page below
 
 ![tailscale-auth-key](./img/How-To-Image-1.png)
 
@@ -43,20 +30,16 @@ Ideally use `tailscale` but you can use any name here.
 ### App Configuration
 
 - `Auth Key`: The key you received from tailscale in prerequisites above
-- `Userspace`: Now enabled by default, as it is _required_ when using local routes and as an exit node (see below). Userspace restricts clients to only accessing the GUI and Samba. This needs to be _unchecked_ if you need to give Tailscale full access to all the features inside TrueNAS SCALE (not just GUI/SMB, but RSYNC, PING and directly connect to other Tailscale IPs, etc). More info in the [Tailscale Userspace Guide](https://tailscale.com/kb/1112/userspace-networking/).
+- `Userspace`: Now enabled by default, as it is _required_ when using local routes and as an exit node (see below). Userspace restricts clients to only accessing the GUI and Samba. More info in the [Tailscale Userspace Guide](https://tailscale.com/kb/1112/userspace-networking/).
 - `Accept DNS`: Enabling it will pass your Global Nameservers from Tailscale to your local install.
-- `Routes`: Change to the routes you wish Tailscale to have access to on the devices it's connected, such as my LAN in the example. Required if you want to access APPS over Tailscale using TrueNASIP:Port from any Tailscale connected client.
+- `Routes`: Change to the routes you wish Tailscale to have access to on the devices it's connected, ie your LAN.
 - `Extra Args` passes arguments/flags to the `tailscale up` command.
-- `Hostname` You can specify a specific hostname for use inside Tailscale (see image below). (Passes `--hostname HOSTNAME` to `Extra args`)
+- `Hostname` You can specify a specific hostname for use inside Tailscale. This is recommended as otherwise it will utilise the tailscale kubernetes podname as the machine name in the console, over time when the chart is upgraded it will add additional machines into Tailscale portal. (Passes `--hostname HOSTNAME` to `Extra args`)
 - `Advertise as exit node` This is used to pass traffic through tailscale like a private VPN. (Passes `--advertise-exit-node` to `Extra args`)
 
 For more Extra Args and their usage please check the [Tailscale Knowledge Base](https://tailscale.com/kb/1080/cli/#up)
 since we consider these advanced features and these may/not be compatible with everyone's exact setup.
 
-**Hostname example**
-
-![hostname-example](./img/Hostname.png)
-
 ## Namespace Privileges Required for Talos Cluster
 
 In your namespace.yaml file add
@@ -66,42 +49,19 @@ In your namespace.yaml file add
 
 to allow this Chart to run with privileged permissions.
 
-### Networking and Services
-
-The default ports are fine for this chart, you shouldn't need to port forward or open ports on your router.
-
-### Storage and Persistence
-
-Highly recommended to leave it as specified in the Charts values.yaml file.
-
-### Ingress
-
-Shouldn't need to enable this.
-
-### Security and Permissions
-
-Should be left as is, unless you know what you are doing!
-
-### Resources and Devices
-
-You can set custom resources for CPU/RAM, but defaults should be work fine in most cases
-Defaults are 4 vCores and 8G RAM.
-
 ### Tailscale DNS Setup
 
 In Tailscale Portal on DNS, Namespace section add a new custom nameserver using  the Blocky IP address and restrict to domain (SplitDNS) for the Domain used in ClusterTool for Talos.
 
 ![tailscale-nameserver](./img/tailscale-nameserver.png)
 
-### Addons
-
-Shouldn't need to enable any.
+### Working Values Example
 
-## Support
-
-- You can also reach us using [Discord](https://discord.gg/tVsPTHWTtr) for real-time feedback and support
-- If you found a bug in our chart, open a Github [issue](https://github.com/truecharts/apps/issues/new/choose)
-
----
-
-All Rights Reserved - The TrueCharts Project
+```yaml
+tailscale:
+  authkey: MY_PRIVATE_AUTHKEY
+  accept_dns: true 
+  routes: 192.168.1.0/24 # LAN Example
+  advertise_as_exit_node: true
+  hostname: "MyHostname"
+```