docker

  1. Docker containers don't resolve DNS

    Hi guys, Sorry to bother, but I got perhaps a fairly easy problem, but I can't seem to be able to solve it. I have 1 host with 3 VMs, all of them can reach Internet and resolve domain names, but Docker containers running on said VMs can't resolve DNS (ping google.com fails), but can reach...
  2. Docker with Cloud-Init Problems

    Hello, a few days ago we had the problem with several VMs(qemu) that after some time they don't connect to the internet anymore. After some searching, we found out that Docker changes the network configuration(initially set by cloud-init) by itself (the server doesn't have an IPv4 address...
  3. Cloud-Init mit Docker Probleme

    Hallo, vor ein paar Tagen haben wir bei mehreren VMs(qemu) das Problem gehabt, dass diese nach einiger Zeit keine Verbindung mehr zum Internet haben. Nach ein bisschen Sucherei haben wir herausgefunden, dass Docker die Netzwerkkonfiguration ändert und damit zerschießt.(Der Server hat dann keine...
  4. restore lxc with overlay2 docker images in it

    Hi, recently i've added overlay2 module to proxmox-host, so i can easily use basic docker-cli functionality inside an lxc containers (pull/tag/push), without using runtime. But attempt to restore a container with overlay2 layers (docker images) inside fails: extracting archive...
  5. dockerd: sync duration of 1.x, expected less than 1s

    I've had this problem for a while here now, and I've turned the internet upside down trying to figure it out, but there is very, very little information out there about this specific warning. It is extremely consistent and reproducible in my PVE setup though, so I figured I'd ask here! May 28...
  6. Recommendations for docker swarm proxmox cluster

    Hi, I have a docker swarm stack to deploy, needs to be HA, so my search ends up with a 3 Proxmox server in cluster + Ceph cluster solution(diagram in attach). Each node will have VM with docker swarm running: 2x EMQ X brokers - 2 cores 16GB RAM each (4 cores 32GB RAM) InfluxDB...
  7. Installation on a Mac Pro

    I got my hands on a Mac Pro 2012 with two 6 core Xeons. The Mac has a 500GB SSD and three 6TB drives. When I have installed Proxmox previous, I also would install docker and zfs as well. How does setup my data drives to allow both LVM-Thin and docker storage to co-exist or should I just create...
  8. LXC container snapshot restore breaks container running Docker

    Hi, in the process of automating LXC Docker container installation I came across a problem that makes the container fail to start Docker after restoring a snapshot of the container. Basically I want to setup Docker inside a LXC container and deploy several images using Ansible. I tried to break...
  9. Toying with gvisor to run Docker inside an LXC container in a safe? way

    Hi, The other day I stumbled upon gvisor, which is a Google container driver which can be used with Docker that apparently uses an approach which is "mostly user-mode"; it emulates a Linux kernel in usermode, so it might be a way to run Docker containers inside an LXC container without nesting...
  10. Docker daemon running in Alpine container. Solved?

    I was able to setup Alpine 3.10 to run Docker daemon and run hello-world container in it. Here are the steps. create container based on alpine-3.10-default_20190626_amd64.tar.xz (disk of size 0.5GB is enough for this little test) under Options enable Features 'keyctl' and 'Nesting' start the...
  11. ARP table overflow - but only one neighbor

    Hi, i have some kind of legacy setup, which i created with Proxmox 5: I have a bunch of LXC containers which are privileged. Inside the LXC containers, i have installed a docker, and some docker containers. The networking of all this is managed by a VM with OPNsense. This worked fine with...
  12. Docker on promox recommendations

    As others on this forum we've been considering for a while migrating some installations to docker containers and also like other I would hope to be able to do it within the Proxmox setup. I was wondering if the new Proxmox 6 brings any updates or changes to this. As far as I understand Proxmox...
  13. Docker on LXC or VM?

    I'm considering running docker (and some docker containers) off of proxmox and wondered whether running docker inside an LXC or a VM would be better? I noticed from the following URL that it mentions that running docker in a VM would be better but gives no reason why this would be the case...
  14. Thinking of switching from vSphere

    We have a small vSphere cluster in our lab but we're increasingly using Docker. This however isn't ideal since we'd like a GUI managed solution which natively supports Docker (like Synology's DSM). Does Proxmox have Docker support in the web interface? I see mention of it in 5.3 but I can't...
  15. 5.3 and unprivileged containers: docker works, mount nfs does not

    I upgraded from 5.2 to 5.3 and am trying to re-deploy self service unprivileged containers where users create an LXC container and then can do whatever they need to do (mostly installing docker, mounting file systems etc) First I am disabling all the magic hacks that were required to run docker...
  16. 5.3: Docker on LXC on ZFS

    Hi, I'm toying with running Docker inside a CentOS 7 LXC on a Proxmox whose storage is ZFS. The container has: $ cat /etc/pve/lxc/209.conf ... features: nesting=1 ... and is a privileged container. For starters, the only storage driver that allows me to start the Docker service is vfs. ZFS...
  17. [SOLVED] LXC + docker, containerd cannot find /lib/modules/4.15.18-9-pve

    Hi all, Been stuck on this for quite some time and looking for some feedback. I'm running Proxmox 5.2 and I currently have 6 LXC Ubuntu 18.10 containers. 1 hosts rancher, 5 others host k8s worker/etcd/controller machines. I've been using the unsecure mode outlined here...
  18. Docker not working on Alpine Linux LXC

    Hello, I would like to manage docker work on an alpine LXC container. I can not launch any image. docker: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "process_linux.go:402: container init caused \"rootfs_linux.go:58...
  19. Homelab newbie advice

    Hey, I'm planning to setup a server running proxmox, but before I do, I'd like some advice for how I should arrange my disks. Today I'm running a Proliant Gen8 Microserver with 4x2TB, 1x128GB SSD drives using FreeNAS. But since I've been having trouble with FreeNAS and FreeBSD I'm looking two...
  20. What's Promox's response to: Package and Run Virtual Machines as Docker Containers

    Hi, I'm running a KVM with Docker inside. To be precise it's RancherOS promising a fast and lightweight OS for Docker. This works fine. However I asked myself why not running KVM inside Docker and came accross another product: RancherVM. In this article the advantages of this concept are...

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