Post Ideas: Sysadmin Systemd

[jmgomez-IAA]

Systemd Timers

https://wiki.gentoo.org/wiki/Systemd#Timer_services

[jmgomez-IAA]

Systemd Network Manager

Configurar Network en Archlinux con Netcl y Systemd

[jmgomez-IAA]

Systemd

Ficheros

Los ficheros se encuentran en las carpetas:

• /usr/lib/systemd/system/: unidades proporcionadas por los paquetes instalados.
• /etc/systemd/system/: unidades instaladas por el administrador del sistema.
• /run/systemd/system; volatile runtime network directory

Uso

Analizar el estado del sistema

Mostrar el estado del sistema utilice ~]$ systemctl status Listar unidades en ejecución: ~]$ systemctl o bien ~]$ systemctl list-units Listar unidades que han fallado ~]$ systemctl --failed Listado de las unidades instaladas con ~]$ systemctl list-unit-files Recargar todas las unidades ~]$ systemctl daemon-reload

[jmgomez-IAA]

Systemd Network

There are three types of configuration files. They all use a format similar to systemd unit files.

• .network files. They will apply a network configuration for a matching device
• .netdev files. They will create a virtual network device for a matching environment
• .link files. When a network device appears, udev will look for the first matching .link file

Comprobar si la mac del dispositivo es persistente: ~]$ cat /usr/lib/systemd/network/99-default.link

IP Estatica

Primero debemos crear un fichero de unidad que configure la ip que queremos:

 ~]$ cat  << EOF |  sudo tee /etc/systemd/network/enp0s2*.network
[Match]
Name=enp0s2*

[Network]
Address=161.111.16*.***/25
Gateway=161.111.16*.***
DNS=161.111.16*.***
DNS=161.111.1+*.***
EOF
 ~]$ cp /etc/systemd/network/enp0s25.network /srv/share/Workspace/lineas_trabajo/source/script_solutions/lib_scriptiaa/trunk/
 ~]#  systemctl daemon-reload

• Desactivamos netctl en caso de estar activo

  ~]# systemctl status netctl
  ~]# systemctl stop netctl
  ~]# systemctl disable netctl

• Desactivamos dhcpd

  ~]# systemctl status dhcpcd@enp0s2*
  ~]# systemctl stop dhcpcd@enp0s2*
  ~]# systemctl disable dhcpcd@enp0s2
  
  ~]# systemctl status dhcpcd
  ~]# systemctl stop dhcpcd
  ~]# sudo systemctl disable dhcpcd

• Habilitamos systemd-networkd

  ~]# systemctl enable systemd-networkd
  ~]# sudo systemctl start systemd-networkd
  
  ~]$  ip addr

  2: enp0s2*: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 00:18::68:: brd ff:ff:ff:ff:ff:ff inet 161.111.1./25 brd 161.111.1.255 scope global enp0s2 Remove the old address

  ~]#  ip addr del 10.9.***.*** dev enp0s2*

Links

Basico Advanced

[jmgomez-IAA]

Links

Linux Distro

• Zeroshell is a Linux based distribution dedicated to the implementation of Router and Firewall Appliances completely administrable via web interface.
• Drauger OS 7.4.1 is built off of the Liquorix low latency Linux kernel, a pre-compiled ZEN kernel designed with a balance between latency and throughput in mind. To further enhance this, Drauger OS uses a modified Xfce desktop for improved performance and configurability.

Kernels Linux

• Liquorix Kernel is a distro kernel replacement built using the best configuration and kernel sources for desktop, multimedia, and gaming workloads.

Build Guides

• How to Customize your Bash Prompt on a Linux VPS learn how to customize your prompt to add your own preferences. You can include a lot of useful information that can help you stay oriented and remind you when you are operating with elevated privileges.
• The perfect Btrfs setup for a server this article explain how to use Btrfs as the only filesystem on a server machine, and how that enables some sweet capabilities
• HTPC The complete guide The reference in HTPC (Home Theater) and Media Server

[jmgomez-IAA]

BTRFS

https://wiki.archlinux.org/index.php/Btrfs#File_system_on_a_single_device https://www.funtoo.org/BTRFS_Fun http://www.beginninglinux.com/btrfs

Perfect BTRFS setup

https://seravo.fi/2016/perfect-btrfs-setup-for-a-server

BTRFS converting RAID1 to a single drive

date:2018 https://www.kubuntuforums.net/showthread.php/73429-BTRFS-converting-RAID1-to-a-single-drive

[jmgomez-IAA]

Truquetes

NFTS

Montar particion hibernada, o con errores: sudo ntfsfix /dev/sdd1

SSH job a background

screen and others can do it, but that's not what they're for. I recommend nohup for tasks you know you are going to leave behind and bg for tasks you're already running and don't want to re-start.

• Option 1: nohup (man nohup) The best way is often the simplest: nohup long-running-command & It was made specifically for this, it even logs stdout to nohup.log.
• Option 2: bg If you want to "background" some already running tasks, then your best bet is to Ctrl+Z then run bg to put your most recent suspended task to background, allowing it to continue running.

Then a quick disown should keep the process running after you log out

Keep in mind, both are bash specific. If you're not using bash, then the commands could be different.

[jmgomez-IAA]

Deluge as proxy with apache

http://themediaserver.com/access-deluge-webui-apache-openssl/

[jmgomez-IAA]

Windows 10

Windows Essential

Chocho

Install choco and essential packages

Here´s my current list of packages I am using. Open the command prompt as Administrator, install Choco and run the desired commands as needed.

ChocoInstallBase.ps1 by atwork.at

Get Chocolatey

Set-ExecutionPolicy Bypass -Scope Process -Force; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))

See packages at https://chocolatey.org/packages/

Essentials

• notepadplusplus choco install notepadplusplus -y
• keepass choco install keepass -y
• Chrome choco install googlechrome -y
• Firefox choco install firefox -y
• Acrobat Reader choco install adobereader -y
• VLC choco install vlc -y
• Audacity choco install audacity -y

  Msft & Office

• Office365 choco install Office365ProPlus -y
• Microsoft Teams choco install microsoft-teams -y
• Skype choco install skype -y
• PowerBi choco install powerbi -y

  Additional Tools

• 7Zip choco install 7zip -y
• Peazip choco install Peazip -y
• Virtual Clone drive choco install virtualclonedrive
• freecommander-xe choco install freecommander-xe.install
• Wunderlist choco install wunderlist -y
• irfanview choco install irfanview -y
• Greenshot choco install greenshot -y
• Filezilla choco install filezilla -y
• Curl choco install curl -y
• Youtube-dl choco install youtube-dl -y
• Express VPN choco install expressvpn -y

  Azure

• azure-cli choco install azure-cli -y
• azcopy choco install azcopy -y

  More Tools

• PowerShell Core choco install powershell-core -y
• Sysinternals choco install sysinternals -y
• rdcman choco install rdcman -y

  Dev

• Git choco install git -y
• VS code choco install vscode -y
• VS PowerShell choco install vscode-powershell -y
• VS CSharp vscode-csharpchoco install vscode-csharp -y`
• vscode-gitlens choco install vscode-gitlens -y
• Postman choco install postman -y
• Fiddler choco install fiddler -y
• Microsoft .NET Framework 4.7.2 choco install netfx-4.7.1-devpack -y or Microsoft .NET Framework 4.7.2 choco install dotnetfx -y or Microsoft .NET Framework 4.7.2 Developer Pack choco install netfx-4.7.2-devpack
• Microsoft .NET Core 2.2.6 choco install dotnetcore -y or Microsoft .NET Core Runtime (Install) 2.2.6 - choco install dotnetcore-runtime.install -y
• More Dev choco install sql-server-management-studio -y or choco install azure-data-studio -y
• Node.js v11.14.0 choco install nodejs -y
• Misc choco install spotify --ignore-checksums -y
• Devices choco install lenovo-thinkvantage-system-update -y

[jmgomez-IAA]

Netcat

https://www.binarytides.com/netcat-tutorial-for-beginners/

[jmgomez-IAA]

Sockets

https://websetnet.net/open-tcpudp-socket-bash-shell/

[jmgomez-IAA]

Docker

Docker archlinux

https://linuxhint.com/arch-linux-docker-tutorial/