Questions tagged [lxc]
LXC short for (Linux Containers) LXC is an operating system-level virtualization method for running multiple isolated Linux systems (containers) on a single control host. LXC is the userspace control package for Linux Containers, a lightweight virtual system mechanism sometimes described as “chroot on steroids”.
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Wireguard DNS failure to resolve
It's always DNS...
I'm trying to set up a WireGuard server in an LXC container running on Proxmox. The VPN works in that all the local IP addresses are accessible but I can't get DNS working despite ...
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Proxmox linux bridge has binded ip which not works 50% of time
I have default proxmox install on Vultr baremetal server
It has bridge like this
root@ed2:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback
iface enp1s0 inet manual
auto vmbr0
iface ...
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1
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96
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df reports zfs used space as 128K, not the actual used space
I have a ZFS mirror pool in my Proxmox instance. I am trying to get it to mount to an LXC container read-only (preferably not giving full filesystem access) so I can have Homepage detect the used and ...
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148
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Apache2 folders redirect to IPs
I have installed Apache/2.4.56 (Debian), a noip URL and severals LXC containers. I need to access to the web apps inside the LXC containers:
example.com/app1 -> LXC container 1 (with Zend2)
example....
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44
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"lxc-create: lxc-helpers-bullseye: utils.c: get_template_path: 898 No such file or directory - bad template: debian" error on Forgejo actions
I have a Forgejo server and I'm trying to setup the Forgejo runner to execute actions. The "Set up job" script worked before, but I don't know why, it's not working now. Here's all the log:
...
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1
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211
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How to route two DHCP interfaces to two different networks
I use LXD and cloud-init to configure an instance with two interfaces which get assigned IP's via DHCP.
eth0 (10.23.44.177/24) which is connected to a bridge on the host machine (lxdbr0) to get out ...
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167
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Proxmox LXC Networking with public IP
I have a bare-metal Proxmox server running with two public IPs. The initial configuration has already been done, and the containers are running with a NAT and a private network.
I currently have 2 ...
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61
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Unprivileged LXC - Cannot set tx queue length
I've installed and configured OpenVPN server on unprivileged LXC.
Everything works fine except for one problem/warning:
Cannot set tx queue length on tun0: Operation not permitted (errno=1)
My tun0 ...
1
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2
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127
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LXC container fail to load big iptables rules
I'm facing a strange problem when I try to load a big iptables set of rules on a LXC container (it's working fine on a virtual machine).
The container is running Linux Debian 12 bookworm.
I'm able to ...
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124
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LXC network routing issues
I have an LXC running Ubuntu 22.04 on Proxmox, which I'm trying to move to a new LXC running Debian 12.
Running the exact same LXC configuration somehow results in initial SSH connections to the ...
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313
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Debian 12 + LXD/LXC security.idmap.isolated fails
Debian 12.1 (6.1.0-11-amd64) running LXD/LXC and on an unprivileged container setting security.idmap.isolated=true seems to fail to update the owner/group of the container's files.
Here is an example:
...
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153
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Docker service doesn't start on unprivileged lxc container on boot
I have proxmox with an Ubuntu lxc container where docker is installed and containers running. When I reboot my node, although the lxc container starts on boot, docker services start only when I login ...
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103
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Error: Storage pool "default" unavailable on this server (losetup command fail)
I can't start my lxc/lxd containers anymore. I get the error : Error: Storage pool "default" unavailable on this server.
I am on debian sid.
The root issue seems to be that the command ...
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186
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Understanding ulimits / process limits, or maybe something else. New processes stop opening (fork errors)
I'm a little bit lost and need some help understand what exactly is happening with my server.
So this is a Proxmox (Debian) server with several LXC containers running in it, and from time to time ...
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1k
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No Connection with Pivpn wireguard lxc Container on a proxmox host
Describe the issue
I can't connect to anything. Not the internet nor the local network
Expected behavior
I want if my device is connected to the wireguard vpn to surf the web and to access every ...
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1
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478
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Do I need to install docker engine on proxmox's LXC to run a portainer agent?
Currently I am running Proxmox and have installed the docker-engine and Portainer on the main Proxmox node. I would like to add more environments, including an LXC which I downloaded from a template ...
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1k
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Chrony doesn´t start in Proxmox container
I have created a container with Debian (Debian 11 template) on top of Proxmox 7.0.8. It is essential that the operating system keep the time synchronized and for this I installed chrony, but it does ...
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59
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Controlling virsh filters right way
I'm running centos 7, lxc for containers, virsh for setting up a bridge.
Upon creation, virsh set up some firewall rules for virbr
# iptables-save | grep virbr
-A POSTROUTING -o virbr0 -p udp -m udp --...
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1
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319
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docker can't access internet from within LXC Container
I have launched a Ubuntu 20.04 LXC container on RedHat 8.6 using the following command
lxc launch ubuntu:20.04 --storage default -c security.privileged=true -c boot.autostart=true --network lxdbr0
I ...
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216
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Debian 10 to 11 upgrade LXC unpriv fails to get IP assigned to veth
Just upgraded from Debian 10 to 11 and my unpriviledged container is no longer assigned an IP through the config file.
/var/lib/lxc/DNS/config
# Template used to create this container: /usr/share/lxc/...
2
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1
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394
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MariaDB regularly freezes every 1-2 days
I'm using MariaDB on Ubuntu 22.04 running on a Proxmox container (LXC). I have two instances for two different services, but since upgrading from 21.10 to 22.04 both instances completely freeze once ...
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462
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Any way to do virtual 802.1x inside Linux?
I'm trying to test out 802.1x in a virtual environment but I haven't been able to find any good resources/guides on how to do that.
The scenario is something like this:
I have a Linux host machine (...
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0
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607
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Need help regarding NFS shares permissions
I recently switched to using Proxmox as my OS of choice from OMV as the main OS and running a bunch of docker containers on the same host. I installed OMV (OpenMediaVault) inside a VM. I passed ...
2
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1
answer
523
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LXC container network with OVS not forwarding ARP correctly
Using lxc containers, I want to simulate network components individually. For this, I am trying to embed OVS in an lxc container.
Initially, I started with the following setup, which works properly ...
3
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2
answers
730
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How to route host traffic over lxc?
Some info updated:
Last login: Wed Aug 31 18:10:24 2022
root@pve:~# ip route
default via 192.168.132.1 dev vmbr0 proto kernel onlink
192.168.132.0/24 dev vmbr0 proto kernel scope link src 192.168.132....
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2
answers
3k
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A few users and subuid/subgid mapping
I cannot get my head around the userns-idmap mapping ie with sub{uid,gid} mapping stuff.
Here's what I have:
# lxc launch images:ubuntu/22.04 c1
# lxc config device add c1 home disk source=/home/user3/...
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246
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How can I (re)create a LXC image with ansible?
I have a server with custom made LXC images. My users can create containers from thoses images.
Until now, when I needed to change some configuration to the image, I went into a tedious workflow of ...
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730
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How to bridge only IPv6 and drop all IPv4 traffic on a Linux bridge with NFT?
Currently, we have a network where apps on host and VMs are connected together and all VMs are behind the NAT as below
||=> Host
ISP Router => enp1s0
|--> ...
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110
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when I use the LXC IP on the browser it gives "This site can’t be reached"
Basically I want to establish website with the LXC.
so I installed LXD and created LXC called app1, then installed apache2. All are running, but when I use the LXC IP on the browser it gives "...
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1
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904
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Proxmox container moved to the wrong machine and now it is trapped there
I have a HA proxmox cluster with three nodes.
I have replication between two nodes. Each of those two nodes have a ZFS pool that is used for replication. I have replication rules setup between those ...
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175
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Routing from LXC to WAN
I have a VPS with one public IP, 64.x.x.x which is assigned to enp1s0.
My goal is to have LXC container/s running on this VPS which have connectivity with the host and with WAN. That means traffic is ...
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4k
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LXC instances do not have IPv4 addresses
I've had limited success in having LXC instances acquire an IPv4 address. It has worked at creation, but if I reboot the host, all addresses are lost.
Host Ubuntu 21.10
Client version: 4.21
Server ...
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1
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86
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Why do I routes to containers locally and how can I do better?
I'm setting up a new server at a new site. The server is placed behind a router / firewall. The server shall run several LXC containers for various services. The LXC containers are connected to a ...
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2k
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Can I restore a Vzdump tar archive to an LXD/LXC container
I have a number of "tar" files created from an old proxmox 6 server, using the vzdump tool.
The person that originally created them has left the company, and the company has changed it's ...
2
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0
answers
493
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How to move a linux container to a remote server running proxmox 7.0?
I am currently in the process of migrating a server running several linux containers to a server managed by proxmox. In the past when i moved a linux container to a different host i just used the LXD ...
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3
answers
3k
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How do I download and install a regular DPKG package in a cloud-init script?
I'm spinning up lightweight containers on a Linux Host using LXD/LXC.
The sole purpose of these containers is to host "Dotnet & Dotnet core apps"
For a while I've been using Ansible, but ...
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43
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deciding on docker architecture setup and performance
I will need to virtualize a jenkins software architecture and I don't know which architcture will be more efficient.
I need :
a jenkins server
an opensuse server for c/c++ 64 bits compilation
an ...
1
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1
answer
240
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LXD on ZFS on LVM on H/W RAID 10
I have a Dell R540 with PERC H730P running RAID 10 over 12 DISK to the tune of ~22TB. I want to run various applications/services in LXD containers.
I understand that ZFS is preferred for LXC storage ...
1
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1
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4k
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LXC Container on same network as host with internet access
First of all let me tell what network configuration I am trying to achieve:
LXC container should be exposed to my local network
LXC container should have internet access
Here's what I have been able ...
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1
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1k
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What is an appropriate backup strategy for LXD with BTRFS storage backends
I'm about to re-configure my home server from scratch and am wondering what would be the best strategy to backup my LXD containers. Meanwhile I am running Ubuntu 20.04 LTS and have some services ...
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2
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3k
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Debian LXC command not found
I am trying to do things with LXC and I have been able to manage with the lxc-* commands but now I have been forced to copy a file and I'm stuck because I can't get to copy the file, I have read that ...
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334
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How to mount glusterfs at boot in centOS 7 lxc container?
Need to get a glusterfs volume mounted in a centos 7 lxc container.
found this and can do it manually ok...
But it seems that adding it in the fstab doesnt work because it gets executed before gluster ...
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3
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6k
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How to fix ContainerCreating errors while deploying metallb?
For testing purpose, I have installed ubuntu 21 on vmware esxi server.
On that machine, spinned up kubernetes using lxc containers following this repository
LXC is spinned up and running.
adminuser@...
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1
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4k
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Can't get LCX bridge to work
I can't get a network bridge under (a up to date) arch-linux as a host to work:
I am aware that the lxc default is read on creation time of the container (I created a new container after changing the ...
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79
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How can I create the .conf file for a LXC container restored from a backup that comes from Proxmox?
I can restore the backup with the tar command but I lack the .conf file from the original Proxmox server it comes from. I restore the backup on a Debian 10 server.
Can I create the .conf file on the ...
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130
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LXD Container IPv4 Interface Management
Ubuntu 18.04.4
lxd 3.0.3
lxc 3.0.3
I have had several containers running without issue for a long time. Today I was making changes to my network and one of the containers picked up a DHCP address.
...
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204
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Why does this systemd service not run at the right time (loading encryption keys from a network drive which are required for lxc containers)?
In Debian with systemd, I use zfs and lxc. My zfs datasets are encrypted and their keys can be loaded from a network host via my /etc/zfs/zfs-load-key.sh script. My LXC containers are started by lxc....
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1
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3k
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Chronyd inside LXC conatiner
It seems like chronyd doesn't work in lxc containers. The containers running are not unprivileged.
Following is showing up with systemd:
● chronyd.service - NTP client/server
Loaded: loaded (/usr/...
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0
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1k
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LXC No space left on device when trying to delete instance
I tried to follow the the LXC tutorial https://www.digitalocean.com/community/tutorials/how-to-set-up-and-use-lxd-on-ubuntu-16-04
When running command lxd init I used all defaults except 1GB as disk ...
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0
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2k
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Proxmox | /etc/default/pveproxy file
I have a small problem. I was trying to disable access to the proxmox web panel for the ip address and enable it for my domain. As I saw on the proxmox website (https://pve.proxmox.com/pve-docs/...