As mentioned earlier in this chapter, in the recent Proxmox release, a bug in the software resulted in upgrading through the GUI having some issues. The GUI is basically a frontend of the behind-the-scene commands that are run through Proxmox scripts. Still, updating or upgrading Proxmox through the CLI seems to be the safest path.
There are no special Proxmox-specific commands to update a Proxmox node. The standard apt-get for all Debian-based distributions is used for the updating process. Log in to the Proxmox node directly on the node or through SSH, and then run the following command to update the list of new packages:
# apt-get update
After the package database is up to date, we can start the update process using the following command:
# apt-get dist-upgrade
