I marked the line with a comment:
"TerminalServerUsers=tsuers"
in file /etc/xrdp/sesman.ini
and it worked for me.

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Desinstalación de paquetes previos

for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; done

Instalación

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

Prueba de funcionamiento

sudo docker run hello-world

Error relativo a AppArmor

docker: Error response from daemon: AppArmor enabled on system but the docker-default profile could not be loaded: running `/usr/sbin/apparmor_parser apparmor_parser -Kr /var/lib/docker/tmp/docker-default3965615640` failed with output: apparmor_parser: Unable to replace "docker-default".  Permission denied; attempted to load a profile while confined?

Desinstalación de AppArmor

systemctl stop apparmor
systemctl disable apparmor
apt remove --assume-yes --purge apparmor

Si todavía error de permisos

• Habilitar el Nesting en las propiedades del contenedor Proxmox

• systemctl status/start/stop pve-container@107

• Para entrar desde PVE en un contenedor: pct enter CTID

• Ruta de los ficheros de configuración de los contenedores LXC: root@elite:/etc/pve/nodes/elite/lxc#

• Ruta de los ficheros de configuración de las VMs: root@elite:/etc/pve/nodes/elite/qemu-server#

• Rutas de las discos (.raw) de contenedores LXC: root@elite:/var/lib/vz/images/102/vm-102-disk-0.raw

• Ficheros cfg de configuración del entorno: /etc/pve#

root@elite:/etc/pve# ls *.c* -la
-rw-r----- 1 root www-data 447 Feb  4 13:01 corosync.conf
-rw-r----- 1 root www-data  13 Jan 15  2023 datacenter.cfg
-rw-r----- 1 root www-data   0 Feb  4 14:38 replication.cfg
-rw-r----- 1 root www-data 600 Feb  4 13:40 storage.cfg
-rw-r----- 1 root www-data  44 Feb  1  2023 user.cfg

AÑADIR ACCESO POR VNC A UNA VM

• Add a line to the VM's configuration file /etc/pve/local/qemu-server/<VMID>.conf which specifies the VNC display number as follows ("77" in the example below):

    args: -vnc 0.0.0.0:77

• If you want to use password protection, add:

    args: -vnc 0.0.0.0:77,password=on

• Go to the VM's 'Monitor' panel in the web interface, or otherwise open an HMP connection. Then, use the following command:

  set_password vnc foobar1 -d vnc2

• Conectar con el cliente VNC al servidor Proxmox, no a la VM, por el puerto 5977 en este caso (59+port)

  ---

  SI NO APARECEN LOS CT TEAMPLATES DE TURNKEY

  # pveam update

  ---

MONTAR UNA RUTA NFS EN UN LXC SIN PRIVILEGIOS

• Add a line to the VM's configuration file /etc/pve/local/lxc/<lxcid>.conf which specifies the folder in the PVE host and the folder in the LXC container:

    mp0: /mnt/qnap_multimedia,mp=/mnt/qnap_multimedia

• Restart container

  ---

DAR A UN NODO MÁS DE UN VOTO DE CARA A QUORUM

• Editar con nano /etc/pve/corosync.conf
• Anadir un voto adicional al nodo correspondiente en quorum_votes:
• Añadir en una unidad config_version: en totem

logging {
  debug: off
  to_syslog: yes
}

nodelist {
  node {
    name: elite
    nodeid: 2
    quorum_votes: 2
    ring0_addr: 192.168.1.225
  }
  node {
    name: pve
    nodeid: 1
    quorum_votes: 1
    ring0_addr: 192.168.1.230
  }
}

quorum {
  provider: corosync_votequorum
}

totem {
  cluster_name: proxmoxcl
  config_version: 3
  interface {
    linknumber: 0
  }
  ip_version: ipv4-6
  link_mode: passive
  secauth: on
  version: 2
}

FORZAR EL ARRANQUE DE CLUSTER SIN CONTAR CON QUORUM

pvecm expected 1

Supported NSX and ESXi versions on stateful servers.

VMware NSX is a network virtualization solution that allows you to build SDN in virtualized datacenters. The difference between NSX-v and VMware NSX-T is explained below.

Overview With the release of VMware NSX 4.0 VMware announced the deprecation of NSX standard load balancer and the intention to replace it with NSX Advanced Load Balancer (formerly Avi Networks). This is not quite a new message since the advise to adopt NSX ALB for greenfield deployments has been out and followed for quite