Backup and restore Proxmox configuration for hardware upgrade

[orosmannaro]

Hi all.

I have a Proxmox 3.4 server with VM's in a NAS iSCSI/LVM storage and backups in a NAS NFS storage.

The server was installed on a single disk, so I would like to do this:

• backup Proxmox configuration
• replace the HD with two new SSD (RAID1)
• install Proxmox (same version)
• restore Proxmox configuration

Dan Ziemecki post seem to give the best help for this task.

I have a doub: which directories I need to restore from configuration backup?

TIA

 

[fireon]

In your case normaly you must only backup /etc/pve. There all configs. But i think you should install newest version 4.4. Confgs are the same. Don't overwrite all. Only your own changed configs.

 

[orosmannaro]

Thanks for your answer fireon.

I would write a general purpose script to do a backup of Proxmox configuration, so I want to include all the directories that could be be useful in case of local disk damage ...

Can you tell me what kind of problems may I have if I dont stop the Proxmox services before backup the configuration files?

Thank you again.

 

[fireon]

Can you tell me what kind of problems may I have if I dont stop the Proxmox services before backup the configuration files?

No problem, nothing is to stop. We do this on us servers with "backuppc" automaticly.

 

[mir]

Can you tell me what kind of problems may I have if I dont stop the Proxmox services before backup the configuration files?

Since /etc/pve is a virtual filesystem stored in a SQLite database all you need to backup is:
/var/lib/pve-cluster/
- Do a SQLite database backup of config.db (https://www.sqlite.org/backup.html)
- Backup corosync.authkey
/var/lib/pve-firewall/
- What ever is in there

 

[orosmannaro]

Thanks!

 

[xed]

Is there any properly consolidated documentation entry on how to backup and restore a system? I will be doing something similar as the OP to replace the SSD currently installed for another one with bigger capacity and better server capabilities.

 

[Amin Vakil]

Since /etc/pve is a virtual filesystem stored in a SQLite database all you need to backup is:
/var/lib/pve-cluster/
- Do a SQLite database backup of config.db (https://www.sqlite.org/backup.html)
- Backup corosync.authkey
/var/lib/pve-firewall/
- What ever is in there

I just want to be sure about backing sqlite database up, does anyone know the specific command?

I mean just backing config.db up and in case of failure installing the same proxmox with same ip and host, stopping pve-cluster service, copying backup config.db to the new server, setting 600 permission on it, replacing /var/lib/pve-firewall from backup server (in case of failure I mean) to new server and starting pve-cluster is enough?

Am I missing something here?