Proxmox Docker Monster! Running 13000 containers on a single host!

Following up on a blog post that is hot off the press on my site, I wanted to create the video form of this topic. I have been playing around with Proxmox and Docker containers in the lab. With my SuperMicro E300-9D hardware with 16 cores and 128 GB of memory, how many containers can you run? Subscribe to the channel: https://www.youtube.com/channel/UCrxcWtpd1IGHG9RbD_9380A?sub_confirmation=1 My blog: https://www.virtualizationhowto.com _____________________________________________________ Social Media: https://twitter.com/vspinmaster LinkedIn: https://www.linkedin.com/in/brandon-lee-vht/ Github: https://github.com/brandonleegit Introduction - 0:10 How many containers can you run? 0:50 Docker Swarm to initialize thousands of containers - 1:00 Creating a Docker host template - 1:20 Experimenting with LXC vs virtual machines - 1:39 The memory configuration and what I settled upon - 2:15 Creating a single node Docker swarm host and service, as well as scaling replicas - 2:34 Alterating between nginx and redis containers - 3:00 How did I decide on 1000 containers for each virtual machine? 3:38 Workaround for the maximum connections to the Linux bridge - 4:29 Bringing up the 10th and 11th hosts up - 5:00 Initializing the Docker Swarm host - 5:40 Scaling the host to 1000 containers - 6:40 Containers starting to scale up - 7:10 Checking out the host hardware performance - 7:23 Reached 10000 Docker containers running on the Proxmox host - 8:00 We hit 10000, can we go higher? 8:23 Bringing up the additional Docker container hosts - 8:50 Also spun up host 11, on way to 13000 containers - 9:17 CPU is pegged at 100% but still have memory headroom - 9:34 100% CPU usage and over 90% memory usage - 10:17 We made it! 13000 containers - 10:35 Proxmox allows you to run Docker, LXC, and even Docker on the host itself - 11:20 Can't believe achieved 13,000 containers, concluding thoughts - 11:50 Read the written blog post covering this experiment in the home lab! https://www.virtualizationhowto.com/2023/04/proxmox-docker-containers-monster-13000-containers-on-a-single-host/