how-to

Cookbook with recipes for Linux, Docker, networking and debugging

• How to create a UDP tunnel with socat
  • Prerequisites
  • Setup
  • Running socat
  • Why use a UDP channel ?
  • References
• How to set process limits with Linux cgroup v2
  • Prerequisites
  • Limiting the memory for userland processes
  • Limiting the cpu resources
  • References
• How DNS works on Docker
  • Overview
  • Linux namespaces implementation overview
  • Docker and linux namespaces
  • Default DNS server on Docker
  • DNS on custom Docker networks
  • References
• How to run Docker swarm overlay networks over ssh tunnel
  • Prerequisites
  • Setup the ssh tunnel
  • Enable swarm mode
  • Working with overlay networks
    • Create the overlay network
    • Overlay networks and VXLAN
    • How to start- ebugging overlay network issues
    • Fixing the firewall configuration to permit the control and data plane communication
    • Start overlay communication
  • Open github issues ipv6 and docker swarm
  • References