add draft for pi-hole installation

content/posts/setting-up-pihole-on-raspberry-pi.md

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+---
+title: "Setting Up Pihole on Raspberry Pi"
+date: 2024-04-27T14:59:05+02:00
+last_modified: .Lastmod
+draft: true
+---
+
+[Pi-hole]: https://pi-hole.net/
+[Raspberry Pi]: https://www.raspberrypi.com/
+[tutorial]: https://www.raspberrypi.com/tutorials/running-pi-hole-on-a-raspberry-pi/
+
+I've finally had some time to set up [Pi-hole] on my [Raspberry Pi].
+
+For most parts, I followed the excellent [tutorial] on the Raspberry Pi website.
+
+## Initial setup 
+
+
+1. On your usual computer, install an operating system on the microSD card. I used the [Raspberry Pi Imager](https://www.raspberrypi.com/documentation/computers/getting-started.html#install-an-operating-system). Make sure to configure the user account (username, password), WiFi settings, and host name.
+1. Insert microSD card into the Raspberry Pi. 
+1. Wait for the Raspberry Pi to boot.
+1. Connect using ssh using the user account configured in step 1: `ssh <user>@<host>.local`, for example: `mloning@raspberrypi.local`.
+1. On the Raspberry Pi, upgrade the system packages and restart: `sudo apt-get update && sudo apt-get upgrade --yes && sudo reboot`.
+
+## Easier login with ssh key
+
+Optionally, for an easier login experience, you can use an ssh key:
+
+On your usual computer:
+
+1. Start the ssh-agent in the background: `eval "$(ssh-agent -s)"`.
+1. Generate ssh key: `ssh-keygen -f ~/.ssh/<key-name> -C <user>`, for example: `ssh-keygen -f ~/.ssh/id_raspberrypi -C <user>`.
+1. Copy the public key to Raspberry Pi: `ssh-copy-id -i ~/.ssh/<key-name>.pub <user>@<host>.local`, for example: `ssh-copy-id -i ~/.ssh/id_raspberrypi.pub mloning@raspberrypi.local`.
+1. Configure ssh settings in `~/.ssh/config`, for example:
+
+```
+Host pi
+  HostName raspberrypi.local
+  User mloning
+  IdentityFile ~/.ssh/id_raspberrypi
+  UseKeyChain yes
+  AddKeysToAgent yes
+```
+
+These settings are for MacOS; they may be different for other operating systems.
+
+To connect to your Raspberry Pi from your usual computer, you should now be able to simply run: `ssh pi`.
+
+## Install Pi-hole
+
+On the Raspberry Pi:
+
+1. Install Pi-hole: `curl -sSL https://install.pi-hole.net | bash`. Make a note of the IP address and admin password for the dashboard (or store it in your password manager). 
+
+To check if Pi-hole is running, try:
+
+* `pihole status`
+* `pihole -c` to open the console dashboard,
+* opening `http://<host>/admin/` (for example, `http://raspberrypi.local/admin/`) in the browser of your usual computer to login to the admin dashboard using the admin password.
+
+## Configure Pi-hole as your network's DNS server
+
+My router did not allow me to set a DNS server, so I configured the DHCP provider instead.
+For other options, see the [tutorial].
+
+1. Log in to your router's admin page. If you don't know the address, you can find it using: `nmcli -f IP4.GATEWAY device show wlan0` 
+
+## Check if Pi-hole is working
+
+1. https://adblock-tester.com/
+
+
+