Add notes and deploy script

content/notes/server/Server.md

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+---
+tags:
+  - Server
+title : Server notes
+description : Server notes
+date : 2025-01-01
+author : Nikola Petrov
+---
+
+## To prevent updating of a specific package?
+Hold a package:
+
+	sudo apt-mark hold <package-name>
+
+Remove the hold:
+
+	sudo apt-mark unhold <package-name>
+
+Show all packages on hold:
+
+	sudo apt-mark showhold
+
+
+### USE APT PURGE TO REMOVE APPS
+
+## Dynamic DNS 
+DDClient [YouTube](https://www.youtube.com/watch?v=iuDCuUEmKF4) [NameCheap](https://www.namecheap.com/support/knowledgebase/article.aspx/583/11/how-do-i-configure-ddclient/)
+
+Install & Setup Instructions: 
+sudo apt-get install ddclient 
+sudo nano /etc/ddclient.conf 
+daemon=3600 
+ssl=yes 
+protocol=dyndns2 
+use=web, web=myip.dnsomatic.com 
+server=updates.dnsomatic.com 
+login=Your OpenDNS login 
+password=Your OpenDNS Password 
+all.dnsomatic.com 
+
+sudo nano /etc/default/ddclient 
+run_ipup="false" 
+run_daemon="true" 
+daemon_interval=3600 
+
+To run it initially: sudo ddclient -daemon=0 -debug -verbose -noquiet
+
+## Shutdown
+```
+systemctl reboot
+systemctl poweroff
+```
+
+## Raid
+https://linuxconfig.org/linux-software-raid-1-setup
+
+## ssh
+in `~/.ssh/authorized_keys` paste your pub key
+and then disable password login in `/etc/ssh/sshd_config` change `PasswordAuthentication`
+to `no`
+
+```
+ssh-keygen -t ed25519
+systemctl reload sshd
+```
+
+
+## Network monitor tool
+`vnstat --help` 
+
+## python venv in debian
+```sh
+sudo apt install -y python3-full python3-pip
+python -m venv venv
+```
+
+