Talk:Proxmox Linux Container: Difference between revisions
imported>Vater |
imported>Vater |
||
| Line 264: | Line 264: | ||
[root@nixos:/]# | [root@nixos:/]# | ||
</pre> | |||
|- | |||
| update the channel for NixOS (needed!) | |||
| | |||
| | |||
: <code>nix-channel --update</code> | |||
<pre> | |||
unpacking channels... | |||
created 1 symlinks in user environment | |||
</pre> | </pre> | ||
|- | |- | ||
| Line 338: | Line 347: | ||
</pre> | </pre> | ||
| https://github.com/NixOS/nixpkgs/issues/9735#issuecomment-783535726 | | https://github.com/NixOS/nixpkgs/issues/9735#issuecomment-783535726 | ||
|- | |- | ||
| … | | … | ||
Revision as of 09:40, 11 October 2021
NixOS container (LXC) on Proxmox Virtual Environment 7
| WUI | CLI | Reference | |
|---|---|---|---|
| find the (a current) NixOS template |
for example for 21.05
| ||
| download the NixOS template |
|
going to the folder where all the templates for Promox Virtual Environment are stored
downloading the NixOS template file (optional you should) move the downloaded NixOS template file to a nicer (more individual) file name
(optional you can) going back
| |
| create a (first) new NixOS container with Proxmox Virtual Environment |
/dev/rbd0 Creating filesystem with 2097152 4k blocks and 524288 inodes Filesystem UUID: 3f4cf224-8062-4cd3-918c-49f891af1aa1 Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632 extracting archive '/mnt/pve/cephfs/template/cache/nixos-21.05_2021-10-10.tar.xz' Total bytes read: 836218880 (798MiB, 21MiB/s) Architecture detection failed: open '/bin/sh' failed: No such file or directory Falling back to amd64. Use `pct set VMID --arch ARCH` to change. /etc/os-release file not found and autodetection failed, falling back to 'unmanaged' TASK OK (optional you can) check the (pve) lxc config file (and it should look like something like the following)
arch: amd64 cores: 1 features: nesting=1 hostname: CT1000 memory: 512 net0: name=eth0,bridge=vmbr0,firewall=1,hwaddr=FE:1E:11:E6:D2:8F,ip=dhcp,type=veth ostype: unmanaged rootfs: storage:vm-1000-disk-0,size=8G swap: 512 unprivileged: 1 |
(optional you can) check the (pve) lxc config file (and it should look like something like the following)
arch: amd64 hostname: CT1000 memory: 1024 net0: name=eth0 ostype: unmanaged rootfs: storage:vm-1000-disk-0,size=4G swap: 512 unprivileged: 1 | |
| (configure the available (virtual) network device for the Proxmox Virtual Environment container) |
| ||
| customize the (pve) lxc startup setup routine (on every node where you want to start a NixOS container) |
run_buffer: 316 Script exited with status 1 lxc_init: 816 Failed to run lxc.hook.pre-start for container "1000" __lxc_start: 2007 Failed to initialize container "1000" TASK ERROR: startup for container '1000' failed
sub unified_cgroupv2_support {
my ($self) = @_;
return if !$self->{plugin}; # unmanaged
$self->protected_call(sub { $self->{plugin}->unified_cgroupv2_support() });
}
(after fixing all the other stuff) WARN: old systemd (< v232) detected, container won't run in a pure cgroupv2 environment! Please see documentation -> container -> cgroup version. TASK WARNINGS: 1 |
||
| customize the individual Proxmox Virtual Environment container configuration for NixOS |
sync_wait: 36 An error occurred in another process (expected sequence number 7) TASK ERROR: startup for container '1000' failed |
sync_wait: 36 An error occurred in another process (expected sequence number 7) __lxc_start: 2073 Failed to spawn container "1000" TASK ERROR: startup for container '1000' failed editing the specific (pve) lxc config file (to a option for lxc.init.cmd)
lxc.init.cmd: /init | |
| (activate nesting for NixOS in the Proxmox Virtual Environment container) |
(optional you can) check the (pve) lxc config file (and it should look like something like the following with nesting=1 on the line features:)
arch: amd64 cores: 2 features: nesting=1 hostname: CT1000 memory: 1024 net0: name=eth0,bridge=vmbr0,hwaddr=A1:B2:C3:D4:E5:F6,ip=dhcp,type=veth ostype: unmanaged rootfs: storage:vm-1000-disk-0,size=4G swap: 512 unprivileged: 1 | ||
| start the NixOS container with Proxmox Virtual Environment |
| ||
| having a running NixOS container on Proxmox Virtual Environment | |||
| login into the NixOS container |
<<< Welcome to NixOS 21.05.3740.ce7a1190a0f (x86_64) - pts/0 >>> Log in as "root" with an empty password. nixos login: nixos login: root [root@nixos:~]# |
sh-4.4# sh-4.4# . /etc/profile [root@nixos:/]# | |
| update the channel for NixOS (needed!) |
unpacking channels... created 1 symlinks in user environment | ||
| (optional) test rebuild of NixOS |
(optional) check the default configuration file for NixOS
{ config, pkgs, ... }:
{
imports = [ <nixpkgs/nixos/modules/virtualisation/lxc-container.nix> ];
}
building Nix...
building the system configuration...
activating the configuration...
setting up /etc...
setting up tmpfiles
warning: the following units failed: sys-kernel-debug.mount
● sys-kernel-debug.mount - Kernel Debug File System
Loaded: loaded (/nix/store/n5j5fjn60nhck658j9ab84k8n9z24n1r-systemd-247.6/example/systemd/system/sys-kernel-debug.mount; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Mon 2021-10-11 06:48:30 UTC; 265ms ago
Where: /sys/kernel/debug
What: debugfs
Docs: https://www.kernel.org/doc/Documentation/filesystems/debugfs.txt
https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems
IP: 0B in, 0B out
CPU: 2ms
Oct 11 06:48:30 nixos systemd[1]: Mounting Kernel Debug File System...
Oct 11 06:48:30 nixos mount[17997]: mount: /sys/kernel/debug: permission denied.
Oct 11 06:48:30 nixos systemd[1]: sys-kernel-debug.mount: Mount process exited, code=exited, status=32/n/a
Oct 11 06:48:30 nixos systemd[1]: sys-kernel-debug.mount: Failed with result 'exit-code'.
Oct 11 06:48:30 nixos systemd[1]: Failed to mount Kernel Debug File System.
warning: error(s) occurred while switching to the new configuration
| ||
| fixing the configuration file for NixOS |
(optional) check the default configuration file for NixOS
{ config, pkgs, ... }:
{
imports = [ <nixpkgs/nixos/modules/virtualisation/lxc-container.nix> ];
}
{
imports = [ <nixpkgs/nixos/modules/virtualisation/lxc-container.nix> ];
systemd.suppressedSystemUnits = [
"sys-kernel-debug.mount"
];
} |
https://github.com/NixOS/nixpkgs/issues/9735#issuecomment-783535726 | |
| … | |||
| … | |||
| … | |||
Is there a need for non unprivileged NixOS containers?
- Is there a scenario where you would like to have a privileged (
unprivileged = 0) container? - I do not know.
Is there a cgroup2 only NixOS containers?
- Is there a configuration with cgroups versions 2 only - where cgroups version 1 is not needed - (so that is possible to rollback the manipulation of the pve lxc startup script (/usr/share/perl5/PVE/LXC/Setup.pm))? Or can we create such a (pre)build image (tar)?
- I do not know.
grep cgroup /proc/filesystems
nodev cgroup nodev cgroup2
- Notes
https://linuxcontainers.org/lxc/manpages//man5/lxc.container.conf.5.html
(pve) lxc configuration option lxc.cgroup2.devices.allow: a
(pve) lxc configuration option lxc.cgroup.devices.deny = a
https://wiki.debian.org/LXC/CGroupV2
https://search.nixos.org/options?channel=unstable&from=0&query=cgroup
documentation
proxmox
- https://pve.proxmox.com/pve-docs/
- https://pve.proxmox.com/wiki/Linux_Container
- https://pve.proxmox.com/wiki/Unprivileged_LXC_containers
lxc
- …
debian
- …
linux
- …