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Prepare host OS - Others

General OS requirements

  1. The host instance needs access to the internet and a working DNS
  2. The host OS needs to expose the cgroups v1. New OSs often expose only cgroups v2.
    • You can check currently exposed cgroup versions by: mount | grep '^cgroup' | awk '{print $1}' | uniq
    • cgroup means v1 is exposed, cgroup2 means v2 is exposed (can be both)
    • Kernel can be forced to expose also v1 cgroups by adding kernel parameter systemd.unified_cgroup_hierarchy=0
  3. Docker-CE version 20.0 or later
  4. nvidia-container-toolkit version 1.7.0 or later
  5. Nvidia driver version 535 or later
  6. docker-compose command version 2.5 or later
  7. The host must have these firewall ports/protocols allowed
  • SSH (TCP port 22) - for SSH
  • HTTP (TCP port 80) - needed for access to web UI and HLS output
  • HTTPS (TCP port 443) - needed for secure access to web UI and HLS output
  • MPEG-TS over RTP/UDP/SRT (UDP ports) - add custom ports for your MPEG-TS streams
  • NDI (TCP&UDP) - needed for NDI to work, the easiest way is to open port range 5353-7999 for both TCP & UDP [NDI docs]
  • RTMP input (TCP port 1935) - needed for RTMP server to listen on this port
  • IGMP - for multicast
  1. mDNS disabled - for NDI discovery working in the Docker, typically done by disabling/removing the avahi-daemon
  2. UDP kernel buffers max size for write and read set to 256MB