Modificacion a PR0203 y comienzo de PR0204

UT02_Instalacion_y_puesta_en_marcha_Linux_Server/Practicas/UT0203_ConexionSSH_VariosUsuarios/PR0203_DCF_README.md

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+[Volver al indice de la unidad](../../index.md)
+
+# Conexión SSH en Varios usuarios
+
+## 1. Preparación MV:
+
+El **VagrantFile** que vamos a generar tendrá la siguiente configuración:
+
+```ruby
+Vagrant.configure("2") do |config|
+  config.vm.box = "generic/ubuntu2204"
+  config.vm.network "public_network", ip: "172.16.0.59", netmask: "255.255.0.0"
+  config.vm.hostname = "vusersdcf"
+  config.vm.provider "virtualbox" do |vb|
+    vb.name = "Conexion SSH varios usuarios"
+    vb.memory = 3076
+    vb.cpus = 2
+  end
+end
+```
+
+Como vemos en la configuración le hemos asignado la **public_network** de manera que mis compañero tendrán también una dirección IP en el mismo rango.
+
+Para comprobar que tenemos conexión entre todos haremos un ping :
+
+```bash
+vagrant@vusersdcf:~$ ping 172.16.0.58
+PING 172.16.0.58 (172.16.0.58) 56(84) bytes of data.
+64 bytes from 172.16.0.58: icmp_seq=1 ttl=64 time=6.66 ms
+64 bytes from 172.16.0.58: icmp_seq=2 ttl=64 time=2.01 ms
+64 bytes from 172.16.0.58: icmp_seq=3 ttl=64 time=2.02 ms
+^C
+--- 172.16.0.58 ping statistics ---
+3 packets transmitted, 3 received, 0% packet loss, time 2002ms
+rtt min/avg/max/mdev = 2.011/3.564/6.661/2.189 ms
+vagrant@vusersdcf:~$
+```
+
+Ahora voy a crear los usuarios para mis compañeros
+
+```bash
+vagrant@vusersdcf:~$ sudo useradd -s /bin/bash david -m
+vagrant@vusersdcf:~$ sudo useradd -s /bin/bash hugo -m
+vagrant@vusersdcf:~$ sudo useradd -s /bin/bash alex -m
+vagrant@vusersdcf:~$ sudo passwd david
+New password: 
+Retype new password:
+passwd: password updated successfully
+vagrant@vusersdcf:~$ sudo passwd hugo
+New password: 
+Retype new password:
+passwd: password updated successfully
+vagrant@vusersdcf:~$ sudo passwd alex
+New password: 
+Retype new password:
+passwd: password updated successfully
+vagrant@vusersdcf:~$
+```
+
+Ya tendria los usuarios creados para cada usuario junto con sus contraseñas
+
+Ahora creare la clave para mi usuario y se la pasare a mis compañeros 
+
+1. Crear el ssh-keygen en el usuario desde donde nos vamos a conectar
+2. Pasar a traves de scp la clave publica
+
+ scp /home/diego/.ssh/id_rsa.pub 172.16.0.56:/home/diego/.ssh/
+
+3. Copiar y sustituiy la clave publica por el authorized_keys
+4. Probar el ssh y comprobar que no pide contraseña.

UT02_Instalacion_y_puesta_en_marcha_Linux_Server/Practicas/UT0203_ConexionSSH_VariosUsuarios/Vagrantfile

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+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+# All Vagrant configuration is done below. The "2" in Vagrant.configure
+# configures the configuration version (we support older styles for
+# backwards compatibility). Please don't change it unless you know what
+# you're doing.
+Vagrant.configure("2") do |config|
+  # The most common configuration options are documented and commented below.
+  # For a complete reference, please see the online documentation at
+  # https://docs.vagrantup.com.
+
+  # Every Vagrant development environment requires a box. You can search for
+  # boxes at https://vagrantcloud.com/search.
+  config.vm.box = "generic/ubuntu2204"
+  config.vm.network "public_network", ip: "172.16.0.59", netmask: "255.255.0.0"
+  config.vm.hostname = "vusersdcf"
+  config.vm.provider "virtualbox" do |vb|
+    vb.name = "Conexion SSH varios usuarios"
+    vb.memory = 3076
+    vb.cpus = 2
+  end
+  # Disable automatic box update checking. If you disable this, then
+  # boxes will only be checked for updates when the user runs
+  # `vagrant box outdated`. This is not recommended.
+  # config.vm.box_check_update = false
+
+  # Create a forwarded port mapping which allows access to a specific port
+  # within the machine from a port on the host machine. In the example below,
+  # accessing "localhost:8080" will access port 80 on the guest machine.
+  # NOTE: This will enable public access to the opened port
+  # config.vm.network "forwarded_port", guest: 80, host: 8080
+
+  # Create a forwarded port mapping which allows access to a specific port
+  # within the machine from a port on the host machine and only allow access
+  # via 127.0.0.1 to disable public access
+  # config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"
+
+  # Create a private network, which allows host-only access to the machine
+  # using a specific IP.
+  # config.vm.network "private_network", ip: "192.168.33.10"
+
+  # Create a public network, which generally matched to bridged network.
+  # Bridged networks make the machine appear as another physical device on
+  # your network.
+  # config.vm.network "public_network"
+
+  # Share an additional folder to the guest VM. The first argument is
+  # the path on the host to the actual folder. The second argument is
+  # the path on the guest to mount the folder. And the optional third
+  # argument is a set of non-required options.
+  # config.vm.synced_folder "../data", "/vagrant_data"
+
+  # Disable the default share of the current code directory. Doing this
+  # provides improved isolation between the vagrant box and your host
+  # by making sure your Vagrantfile isn't accessible to the vagrant box.
+  # If you use this you may want to enable additional shared subfolders as
+  # shown above.
+  # config.vm.synced_folder ".", "/vagrant", disabled: true
+
+  # Provider-specific configuration so you can fine-tune various
+  # backing providers for Vagrant. These expose provider-specific options.
+  # Example for VirtualBox:
+  #
+  # config.vm.provider "virtualbox" do |vb|
+  #   # Display the VirtualBox GUI when booting the machine
+  #   vb.gui = true
+  #
+  #   # Customize the amount of memory on the VM:
+  #   vb.memory = "1024"
+  # end
+  #
+  # View the documentation for the provider you are using for more
+  # information on available options.
+
+  # Enable provisioning with a shell script. Additional provisioners such as
+  # Ansible, Chef, Docker, Puppet and Salt are also available. Please see the
+  # documentation for more information about their specific syntax and use.
+  # config.vm.provision "shell", inline: <<-SHELL
+  #   apt-get update
+  #   apt-get install -y apache2
+  # SHELL
+end

UT02_Instalacion_y_puesta_en_marcha_Linux_Server/Practicas/UT0204_Programacion_de_tareas_cron/PR0204_DCF_README.md

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+[Volver al indice de la unidad](../../index.md)
+
+# Programación de tareas con ```cron```
+
+Para esta práctica utilizare un ubuntu 22.04
+
+## 1. ¿Con qué orden pondría con crontab los siguientes casos?
+
+1. La tarea se ejecuta cada hora
+   - 0 * * * *
+
+2. La tarea se ejecuta los domingos cada 3 horas
+   - 0 */3 * * 0
+
+2. La tarea se ejecuta a las 12 de la mañana los días pares del mes.
+   - 0 0 */2 * *
+
+2. La tarea se ejecuta el primer día de cada mes a las 8 de la mañana y a las 8 de la tarde.
+   - 0 8 1 * *
+   - 0 20 1 * *
+
+2. La tarea se ejecuta cada media hora de lunes a viernes.
+   - */30 * * * 1-5
+
+2. La tarea se ejecuta cada cuarto de hora, entre las 3 y las 8, de lunes a viernes, durante todo el mes de agosto
+   - */15 3-8 * 8 1-5
+
+2. La tarea se ejecuta cada 90 minutos
+   - */90 * * * *
+
+## 2. Como comprobar que el servicio cron está ejecutándose
+
+Para saber si el servicio ```cron``` está activo tendremos que hacer lo siguiente:

UT02_Instalacion_y_puesta_en_marcha_Linux_Server/Practicas/UT0204_Programacion_de_tareas_cron/Vagrantfile

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+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+# All Vagrant configuration is done below. The "2" in Vagrant.configure
+# configures the configuration version (we support older styles for
+# backwards compatibility). Please don't change it unless you know what
+# you're doing.
+Vagrant.configure("2") do |config|
+  # The most common configuration options are documented and commented below.
+  # For a complete reference, please see the online documentation at
+  # https://docs.vagrantup.com.
+
+  # Every Vagrant development environment requires a box. You can search for
+  # boxes at https://vagrantcloud.com/search.
+  config.vm.box = "generic/ubuntu2204"
+
+  # Disable automatic box update checking. If you disable this, then
+  # boxes will only be checked for updates when the user runs
+  # `vagrant box outdated`. This is not recommended.
+  # config.vm.box_check_update = false
+
+  # Create a forwarded port mapping which allows access to a specific port
+  # within the machine from a port on the host machine. In the example below,
+  # accessing "localhost:8080" will access port 80 on the guest machine.
+  # NOTE: This will enable public access to the opened port
+  # config.vm.network "forwarded_port", guest: 80, host: 8080
+
+  # Create a forwarded port mapping which allows access to a specific port
+  # within the machine from a port on the host machine and only allow access
+  # via 127.0.0.1 to disable public access
+  # config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"
+
+  # Create a private network, which allows host-only access to the machine
+  # using a specific IP.
+  # config.vm.network "private_network", ip: "192.168.33.10"
+
+  # Create a public network, which generally matched to bridged network.
+  # Bridged networks make the machine appear as another physical device on
+  # your network.
+  # config.vm.network "public_network"
+
+  # Share an additional folder to the guest VM. The first argument is
+  # the path on the host to the actual folder. The second argument is
+  # the path on the guest to mount the folder. And the optional third
+  # argument is a set of non-required options.
+  # config.vm.synced_folder "../data", "/vagrant_data"
+
+  # Disable the default share of the current code directory. Doing this
+  # provides improved isolation between the vagrant box and your host
+  # by making sure your Vagrantfile isn't accessible to the vagrant box.
+  # If you use this you may want to enable additional shared subfolders as
+  # shown above.
+  # config.vm.synced_folder ".", "/vagrant", disabled: true
+
+  # Provider-specific configuration so you can fine-tune various
+  # backing providers for Vagrant. These expose provider-specific options.
+  # Example for VirtualBox:
+  #
+  # config.vm.provider "virtualbox" do |vb|
+  #   # Display the VirtualBox GUI when booting the machine
+  #   vb.gui = true
+  #
+  #   # Customize the amount of memory on the VM:
+  #   vb.memory = "1024"
+  # end
+  #
+  # View the documentation for the provider you are using for more
+  # information on available options.
+
+  # Enable provisioning with a shell script. Additional provisioners such as
+  # Ansible, Chef, Docker, Puppet and Salt are also available. Please see the
+  # documentation for more information about their specific syntax and use.
+  # config.vm.provision "shell", inline: <<-SHELL
+  #   apt-get update
+  #   apt-get install -y apache2
+  # SHELL
+end

UT02_Instalacion_y_puesta_en_marcha_Linux_Server/index.md

@@ -4,4 +4,8 @@
 
 ## Prácticas
 
-[PR0201: Usuarios y permisos](Practicas/UT0201_Usuarios_y_permisos/PR0201_DCF_README.md)
+[PR0201: Usuarios y permisos](Practicas/UT0201_Usuarios_y_permisos/PR0201_DCF_README.md)
+
+[PR0202: Conexión SSH](Practicas/UT0202_Conexion_SSH/PR0202_DCF_README.md)
+
+[PR0203: Conexión SSH Varios usuarios](Practicas/UT0203_ConexionSSH_VariosUsuarios/PR0203_DCF_README.md)