Proxmox Post-Install

Here are the scripts used in this video:

Proxmox Helper Script:

Run this script on your Proxmox Instance using the terminal:

bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/tools/pve/post-pve-install.sh)"

Running the Proxmox Post-Install Script Manually

If you would like to run these manually instead of using the helper script, follow the instructions below/.

Modify Proxmox Repository Configuration

First, log in to your Proxmox server using SSH. Open a terminal and connect using:

ssh root@Your-Proxmox-IP-Address

Example:

ssh root@10.10.10.61

Navigate to the repository configuration directory:

cd /etc/apt/sources.list.d/

Disable the Proxmox PVE Enterprise Repository

Edit the enterprise repository file:

nano pve-enterprise.sources

Add the following line at the end of the file:

Enabled: false

Te file should look like this:

Types: deb
URIs: https://enterprise.proxmox.com/debian/pve
Suites: trixie
Components: pve-enterprise
Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg
Enabled: false

Re-enable the repository, simply remove the Enabled: false line

Disable the Ceph Enterprise Repository

Edit the Ceph repository file:

nano ceph.sources

Add Enabled: false:

It should look like this:

Types: deb
URIs: https://enterprise.proxmox.com/debian/ceph-squid
Suites: trixie
Components: enterprise
Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg
Enabled: false

To re-enable it, remove the Enabled: false line:

Enable the Ceph No-Subscription Repository (Optional)

You can use the no-subscription Ceph repository instead:

Types: deb
URIs: http://download.proxmox.com/debian/ceph-squid
Suites: trixie
Components: no-subscription
Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg

Add the Proxmox No-Subscription Repository

Create a new repository file:

touch proxmox.sources

nano proxmox.sources

Paste the following content:

Types: deb
URIs: http://download.proxmox.com/debian/pve
Suites: trixie
Components: pve-no-subscription
Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg

Updating Proxmox

The helper script usually prompts you to update the system automatically. If not, you can manually update after configuring repositories:

apt update && apt dist-upgrade -y

Removing the Subscription Nag Message

This step is optional but commonly requested.

Navigate to the Proxmox JavaScript directory:

cd /usr/share/javascript/proxmox-widget-toolkit

Create a backup of the file before editing:

cp proxmoxlib.js proxmoxlib.js.bak

edit the file:

nano proxmoxlib.js

Press CTRL + W, search for:

No valid subscription

Locate the following block:

checked_command: function (orig_cmd) {
    Proxmox.Utils.API2Request({
        url: '/nodes/localhost/subscription',
        method: 'GET',
        failure: function (response, opts) {
            Ext.Msg.alert(gettext('Error'), response.htmlStatus);
        },
        success: function (response, opts) {
            let res = response.result;
            if (
                res === null ||
                res === undefined ||
                !res ||
                res.data.status.toLowerCase() == 'NoMoreNagging'
            ) {
                Ext.Msg.show({
                    title: gettext('No valid subscription'),
                    icon: Ext.Msg.WARNING,
                    message: Proxmox.Utils.getNoSubKeyHtml(res.data.url),
                    buttons: Ext.Msg.OK,
                    callback: function (btn) {
                        if (btn !== 'ok') {
                            return;
                        }
                        orig_cmd();
                    },
                });
            } else {
                orig_cmd();
            }
        },
    });
},

Replace it with:

checked_command: function (orig_cmd) {
    orig_cmd();
},

Restart the Proxmox web service:

systemctl restart pveproxy

This removes the subscription warning banner.

Turning Cluster Features off

You can turn off the Cluster Features with the following commands:

systemctl stop pve-ha-lrm
systemctl disable pve-ha-lrm
systemctl stop pve-ha-crm
systemctl disable pve-ha-crm

To turn it back on using the following commands:

systemctl enable pve-ha-lrm systemctl start pve-ha-lrm systemctl enable pve-ha-crm systemctl start pve-ha-crm

Turn off Corosync

Use the following command:

systemctl stop corosync
systemctl disable corosync

To turn it back on use the following commands:

systemctl enable corosync
systemctl start corosync

Modify the Default Storage Partitions

By default, Proxmox will format your storage into a Local Volume and a Local-LVM Volume. The Local Volume is able to store ISO Files, Backup Files and Container Templates but not Virtual Machine disk files for either VMs or Contains and the Local-LVM Storage can store Virtual Machine Disk but not ISO Files, Backup Files and Container Templates.

So what we can do is remove the Local-LVM partition and add that space to the Local Partition:

Back in my command line, I will enter the command:

root@pm1:~# lvs

  LV   VG  Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  
  data pve twi-a-tz--  17.71g             0.00   1.58
  root pve -wi-ao---- <25.03g
  swap pve -wi-ao----  <7.38g

We can see that my data partition is 17.71g and my root partition is 25.05g. SO we can remove the data partition with the following command:

root@pm1:~# lvremove /dev/pve/data
Do you really want to remove active logical volume pve/data? [y/n]: y
  Logical volume "data" successfully removed.

Then we'll do another lvs

root@pm1:~# lvs

  LV   VG  Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root pve -wi-ao---- <25.03g
  swap pve -wi-ao----  <7.38g

We can see that the data partition is now gone. So next, we'll extend the root partition to take up the space that the data partition left back. Then we'll do a lvs command to confirm that the root partition indeed took up the remaining space.

root@pm1:~# lvextend -l +100%FREE /dev/pve/root
  Size of logical volume pve/root changed from <25.03 GiB (6407 extents) to 52.12 GiB (13343 extents).
  Logical volume pve/root successfully resized.

root@pm1:~# lvs
  LV   VG  Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root pve -wi-ao---- 52.12g
  swap pve -wi-ao---- <7.38g

Configuration

Verify CPU Virtualization Support

lscpu | egrep "Virtualization|Vendor

You should see one of the following:

VT-x --> Intel
AMD-V --> AMD

Intel CPU Configuration

echo "options kvm-intel nested=Y" > /etc/modprobe.d/kvm-intel.conf

modprobe -r kvm_intel

modprobe kvm_intel

Verify it worked:

cat /sys/module/kvm_intel/parameters/nested

AMD CPU Configuration

echo "options kvm-amd nested=1" > /etc/modprobe.d/kvm-amd.conf

modprobe -r kvm_amd

modprobe kvm_amd

Verify

cat /sys/module/kvm_amd/parameters/nested

Proxmox Helper Script:​

Run this script on your Proxmox Instance using the terminal:​

Running the Proxmox Post-Install Script Manually​

Modify Proxmox Repository Configuration​

Disable the Proxmox PVE Enterprise Repository​

Disable the Ceph Enterprise Repository​

Enable the Ceph No-Subscription Repository (Optional)​

Add the Proxmox No-Subscription Repository​

Updating Proxmox​

Removing the Subscription Nag Message​

Turning Cluster Features off​

Turn off Corosync​

Modify the Default Storage Partitions​

Configuration​

Verify CPU Virtualization Support​

Intel CPU Configuration​

AMD CPU Configuration​