lxc Archives - Linux Server Support

Proxmox LXC container docker not working

December 26, 2021 by Yujin Boby

On a Proxmox server, LXC container failed to run docker. When I start a docker container, I get the following errors. root@erpdo:~# docker run hello-world Unable to find image ‘hello-world:latest’ locally latest: Pulling from library/hello-world 2db29710123e: Pull complete Digest: sha256:2498fce14358aa50ead0cc6c19990fc6ff866ce72aeb5546e1d59caac3d0d60f Status: Downloaded newer image for hello-world:latest docker: Error response from daemon: failed to create shim: … Read more

Static IP for CentOS LXC container

December 13, 2021 by Yujin Boby

LXC containers get dynamic IP from DHCP. When you stop and start a container, its IP gets changed. If you hosting some web application on this container, you need to point the application to new IP. To avoid this, you can configure static IP on the container. LXC containers get IP in the range 10.0.3.2-255. … Read more

Where LXC Container files are stored?

December 2, 2021 by Yujin Boby

LXC containers are stored in folder /var/lib/lxc Each container have a folder, which contains /var/lib/lxc/VM_NAME_HERE/config = configuration file /var/lib/lxc/VM_NAME_HERE/rootfs = file system used by lxc container. LXC container OS templates are stored in /usr/share/lxc/templates See LXC

LXC container networking not working

December 2, 2021 by Yujin Boby

On a Debian server, I installed lxc, but when I create a container, it is missing IP address. When I did “lxc-attack VM_NAME”, and checked the network interface with “ip link” command, i can only see the loopback interface “lo”. On Host machine, when I checked network interfaces, lxcbr0 was missing. To fix this, edit … Read more

lxc error Unable to fetch GPG key from keyserver

June 27, 2021 by Yujin Boby

When i create an lxc container on the Ubuntu server, I get an error root@instance-20210627-0830:~# lxc-create -t download -n ok Setting up the GPG keyring ERROR: Unable to fetch GPG key from keyserver lxc-create: ok: lxccontainer.c: create_run_template: 1616 Failed to create container from template lxc-create: ok: tools/lxc_create.c: main: 319 Failed to create container ok root@instance-20210627-0830:~# … Read more

Copy a file from host into LXD container

October 31, 2024January 18, 2021 by Yujin Boby

To copy file from host machine to LXD container run Example To copy a file from the host machine to an lxd container, run To copy a file from LXD container to the local machine, run If you need to copy a folder and files inside, you can use option –recursive See LXD

LXD container snapshot and restore

October 2, 2025August 31, 2019 by Yujin Boby

lxc allow you to take snapshot, restore snapshot of a container. Here we create a snapshot, then delete the /etc folder from the container. Now the container is useless. Restore the container from snapshot to get it work again. To list all snapshots of a container, run To delete a snapshot, run Container snapshots are … Read more

Create lxc container with lxc-create

June 27, 2021August 26, 2019 by Yujin Boby

lxc-create is used to create lxc container. To create a container, run lxc-create -t download -n CONTAINER_NAME_HERE This will list all available containers. You can select the OS you want to use. To specify OS, you can use the following examples lxc-create -t download -n mycontainer-1 — -d ubuntu -r focal -a amd64 lxc-create -t … Read more