ansible/README.md

# TuDatTr IaC

## Backups
Backup for aya01 and raspberry are in a backblaze b2, which gets encrypted on the clientside by rclone.
but first of all we need to create the buckets and provide ansible with the needed information.
## Vault
- Create vault with: `ansible-vault create secrets.yml`
- Create entry in vault with: `ansible-vault edit secrets.yml`
- Add following entries: 
  - `vault_pi_tudattr_password: <YOURPASSWORD>` (password you've setup on the device)
  - `vault_aya01_tudattr_password: <YOURPASSWORD>` (password you've setup on the device)
  - `vault_pihole_password: <YOURPASSWORD>` (arbitrary password you want to log in with)
  - `vault_mysql_root_password: <YOURPASSWORD>` (arbitrary password, used internally)
  - `vault_mysql_user_password: <YOURPASSWORD>` (arbitrary password, used internally)
  - `vault_ddns_tudattrdev_password: <YOURPASSWORD>` (password needed for ddns, refer to [here](https://www.namecheap.com/support/knowledgebase/article.aspx/595/11/how-do-i-enable-dynamic-dns-for-a-domain/))
  - `vault_ddns_borgland_password: <YOURPASSWORD>` (password needed for ddns, refer to [here](https://www.namecheap.com/support/knowledgebase/article.aspx/595/11/how-do-i-enable-dynamic-dns-for-a-domain/))

## Server
- Install Debian (debian-11.5.0-amd64-netinst.iso) on remote system
- Create user (tudattr)
- Get IP of remote system (192.168.20.11)
- Create ssh-config entry
  ```config
  Host aya01
    HostName 192.168.20.11
    Port 22
    User tudattr
    IdentityFile /mnt/veracrypt1/genesis
  ```
  - copy public key to remote system
  `ssh-copy-id -i /mnt/veracrypt1/genesis.pub aya01`
- Add this host to ansible inventory
- Install sudo on remote
- add user to sudo group (with `su --login` without login the path will not be loaded correctly see [here](https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=918754)) and `usermod -a -G sudo tudattr`
- set time correctly when getting the following error
```sh
Release file for http://security.debian.org/debian-security/dists/bullseye-security/InRelease is not valid yet (invalid for another 12h 46min 9s). Updates for this repository will not be applied.
```
By doing on remote system (example):
```sh
sudo systemctl stop ntp.service
sudo ntpd -gq
sudo systemctl start ntp.service
```
### zoneminder
- Enable authentification in (Option->System)
- Create new Camera:
  - General>Name: BirdCam
  - General>Function: Ffmpeg
  - General>Function: Modect
  - Source>Source Path: `rtsp://user:pw@ip:554/cam/mpeg4`
- Change default admin password
- Create users



## RaspberryPi
- Install raspbian lite (2022-09-22-raspios-bullseye-arm64-lite.img) on pi
- Get IP of remote system (192.168.20.11)
- Create ssh-config entry
```config
Host pi
     HostName 192.168.20.11
     Port 22
     User tudattr
     IdentityFile /mnt/veracrypt1/genesis
```
- enable ssh on pi
- copy public key to pi
- change user password of user on pi
- execute `ansible-playbook -i production --ask-vault-pass --extra-vars '@secrets.yml' pi.yml`

## Mikrotik
- Create rsa-key on your device and name it mikrotik_rsa
- On mikrotik run: `/user/ssh-keys/import public-key-file=mikrotik_rsa.pub user=tudattr`
- Create ssh-config entry:
```config
Host mikrotik
     HostName 192.168.70.1
     Port 2200
     User tudattr
     IdentityFile /mnt/veracrypt1/mikrotik_rsa
```

### wireguard
thanks to [mikrotik](https://www.medo64.com/2022/04/wireguard-on-mikrotik-routeros-7/)0
quick code
```
# add wiregurad interface
interface/wireguard/add listen-port=51820 name=wg1
# get public key
interface/wireguard/print
$ > public-key: <mikrotik_public_key>
# add network/ip for wireguard interface
ip/address/add address=192.168.200.1/24 network=192.168.200.0 interface=wg1
# add firewall rule for wireguard (maybe specify to be from pppoe-wan)
/ip/firewall/filter/add chain=input protocol=udp dst-port=51820 action=accept 
# routing for wg1 clients and rest of the network
> <insert forward for routing between wg1 and other networks>
# enable internet for wg1 clients (may have to add to enable internet list
/ip/firewall/nat/add chain=srcnat src-address=192.168.200.0/24 out-interface=pppoe-wan action=masquerade
```
add peer
```
/interface/wireguard/peers/add interface=wg1 allowed-address=<untaken_ipv4>/24 public-key="<client_public_key"
```

Keygeneragion on archlinux `wg genkey | (umask 0077 && tee wireguard.key) | wg pubkey > peer_A.pub`
Wireguard config on archlinux at `/etc/wireguard/wg0.conf`:
```
[Interface]
PrivateKey = <client_private_key>
Address = 192.168.200.250/24

[Peer]
PublicKey = <mikrotik public key>
Endpoint = tudattr.dev:51820
AllowedIPs = 0.0.0.0/0
```
used ipv4: 
- tudattr: 192.168.200.250
- livei: 192.168.200.240

#### notes
- wireguard->add
  name: wg_tunnel01
  listen port: 51820
  [save]
- wireguard->peers->add
  interface: wg_tunnel01
  endpoint port: 51820
  allowed address: ::/0
  psk: <password>
  persistent keepalive: 25
- ip->address->address list->add
  address:192.168.200.1/24
  network: 192.168.200.0
  interface: wg_tunnel01

## troubleshooting
### Docker networking problem
`docker system prune -a`
### Time problems (NTP service: n/a)
systemctl status systemd-timesyncd.service
when not available
sudo apt install systemd-timesyncd/stable
### Syncthing inotify
echo "fs.inotify.max_user_watches=204800" | sudo tee -a /etc/sysctl.conf
https://forum.cloudron.io/topic/7163/how-to-increase-inotify-limit-for-syncthing/2