Changing IP's

[ellenverheyen]

Hello,

In our current setup the iscsi (vmbr0) and lan (vmbr1) of our proxmox servers are in the same IP range, but as read on the forums this might not be a good idea.
(ISCSI network needs to be separate, no? Does this mean a separate Ip range or a separate switch?)

If a separate Ip range is needed, what scenario would fit?
All our VM disks are on a LVM on the iSCSI openfiler box.

Scenario 1:
- shutdown all VM's
- change IP of the openfilerbox and vmbr0
- change IP of ISCSI storage in the Proxmox web interface
although this seems impossible cause it's all greyed out.

Will this work? Looks like it's not working.

Scenario 2:
- shutdown all VM's
- remove LVM volume in the webinterface
- remove iSCSI volume
- change IP of the openfilerbox and vmbr0
- create iSCSI storage again
- create LVM storage again

BUT...
- If I remove the iSCSI and LVM volume, will the VM disks be retained?
Will all Vm's find their disks back?

Does anyone has a good solution to get this working?

Or should I implement the new IP range at the LAN side?
(which means setting up copiers and printers again)

all input is welcome.

Kindly regards,

Ellen

 

[dietmar]

In our current setup the iscsi (vmbr0) and lan (vmbr1) of our proxmox servers are in the same IP range, but as read on the forums this might not be a good idea.
(ISCSI network needs to be separate, no? Does this mean a separate Ip range or a separate switch?)

No, the ide idea is to route the whole iSCSI traffic through a separated physical network.

If a separate Ip range is needed, what scenario would fit?
All our VM disks are on a LVM on the iSCSI openfiler box.

Scenario 1:
- shutdown all VM's
- change IP of the openfilerbox and vmbr0
- change IP of ISCSI storage in the Proxmox web interface
although this seems impossible cause it's all greyed out.

Simply edit /etc/pve/storage.cfg and change the IP of the openfiler box - then reboot.