Measuring Docker Performance

NetData is an execellent tool for measuring Docker performance.

Find more here:

https://hub.docker.com/r/netdata/netdata/

For Netdata to measure correct you have to deploy the NetData installation to all four RaspBerries.

Use docker-compose.yml :

version: '3'
services:
  netdata:
    image: netdata/netdata
    hostname: example.com # set to fqdn of host
    ports:
      - 19999:19999
    cap_add:
      - SYS_PTRACE
    security_opt:
      - apparmor:unconfined
    volumes:
      - /proc:/host/proc:ro
      - /sys:/host/sys:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro

WARNING !!

Do NOT try to install conventional linux firewall on a Docker installation. You endanger yourself for loosing the Docker installation.

The reason is that Netfilter Iptables are used by both firewall software as well as Docker.

Upon which they can not agree.

Check above link for installation for SSL/TLS installation in production environment.