LXC Container¶

How to install DockServer on a Proxmox LXC container¶

This guide will take you through how to prepare Proxmox to install DockServer on an LXC.

Key Points¶

• This guide assumes you already have Proxmox installed and working. These instructions arw working on 6.4-6
• Do not use Debian as the Linux image. Networking is shocking and dies after a day or so due to NIC namespace. This guide was written for Ubuntu 20.04
• Apparmour must be disabled and deleted. If not, Authelia will fail at the password hashing stage.
• Your LXC must be a privileged container. Unpriviliged containers do not allow GPU passthrough which is needed for Plex transcoding.
• If you have local drives that you wish to mount, there are a couple of extra lines required in the xxx.conf file.
• These are the settings that I have set which I have found work well. Your own millage will vary depending on your setup.

Guide¶

1. Download Ubuntu template. Recommended version is Ubunto 20.04 Standard.
2. Create a new LXC container:
3. General tab:
   1. Give the container a name in the 'Hostname' field.
   2. Remove the tick from 'Unprivileged container'.
   3. Set the password and confirm the password you wish to use for CLI access.
4. Template tab:
   1. Choose the Ubuntu template.
5. Root Disk tab:
   1. Set the disk size high enough to handle all DockServer apps. Allow room for expansion. I personally have this set to 500Gb.
6. CPU tab:
   1. Add the number of cores that you want assigned to the LXC. Remember, you will probably have Plex installed in Docker, along with multiple other apps all demanding processing power. I personally have this set to 6 cores.
7. Memory tab:
   1. Set the memory and swap size accordingly. Bear in mind the previous comment regarding number of CPU cores. I personally have this set to 8192MiB for both Memory and Swap.
8. Network tab:
   1. Uncheck 'Firewall'.
   2. 'IPv4' and 'IPv6' - I set these both of these to DHCP and then reserve the MAC address in my routers DHCP server.
9. DNS tab:
   1. Leave this tab alone.
10. Confirm tab - check your settings and select 'Finish'.

IMPORTANT NOTE - DO NOT START THE CONTAINER YET!¶

Before starting the container, you need to set the following on the Options, Features tab:

1. Nesting
2. CIFS
3. NFS
4. Fuse

GPU Passthrough¶

Run the steps on the following guide to pass through the GPU (my own system is an Intel GPU so I followed each step exactly without any changes and everything worked): https://forums.plex.tv/t/pms-installation-guide-when-using-a-proxmox-5-1-lxc-container/219728

NOTE: the above steps worked for Proxmox 6 however with changes to cgroup to cgroup2, the lxc conf file stated:

lxc.cgroup.devices.allow = c 226:0 rwm
lxc.cgroup.devices.allow = c 226:128 rwm
lxc.cgroup.devices.allow = c 29:0 rwm
lxc.autodev: 1
lxc.hook.autodev:/var/lib/lxc/100/mount_hook.sh

lxc.cgroup2.devices.allow: a
227 lxc.cap.drop:
228 lxc.cgroup2.devices.allow: c 226:0 rwm
229 lxc.cgroup2.devices.allow: c 226:128 rwm
230 lxc.cgroup2.devices.allow: c 29:0 rwm
231 lxc.autodev: 1
232 lxc.hook.autodev: /var/lib/lxc/112/mount_hook.sh

Mounting external NFS Drives¶

1. In Datacenter, Storage add your NFS external drives.
2. Open a shell from the node.
3. Replace 120 with the container number:

   nano /etc/pve/lxc/120.conf
   

4. Add the following line('s) as appropriate to the drives you wish to gain access to:

   mp0: /mnt/pve/Media,mp=/mnt/Media
   

   mp1: /mnt/pve/Pictures,mp=/mnt/Pictures
   

   mp2: /mnt/pve/Music,mp=/mnt/Music
   

You can now start the container

How to Disable and Delete Apparmour:¶

Once the container is up and running and you have logged in:

1. Stop Apparmour service:

   systemctl stop apparmor
   

2. Disable Apparmor from starting on system boot:

   systemctl disable apparmor
   

3. Remove Apparmor package and dependencies:

   apt remove --assume-yes --purge apparmor
   

Now your LXC is ready to continue the install of DockServer

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