I see a notification Support for Proxmox VE 5.4 ends on 31.07.2020 but I hesitate to do it because I have clustered several nodes at once using ceph storage. How do I do full upgrade on my Proxmox node? whether one by one node? or can be done simultaneously? and what about my VM's security? is it safe? or I have to backup first? I am very worried about the security of my VM very much. thanks for help.
regards.
Notification :
![1589743501938.png 1589743501938.png](https://forum.proxmox.com/data/attachments/16/16952-1b6ebbc706a734fbad120bfa7a6f1e7d.jpg)
regards.
Notification :
![1589743501938.png 1589743501938.png](https://forum.proxmox.com/data/attachments/16/16952-1b6ebbc706a734fbad120bfa7a6f1e7d.jpg)