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DockerCon 18 Cool Hacks - automated hardware testing using docker for space

  1. Automated Hardware Testing Using Docker for Space
  2. Double Asteroid Redirection Test DART
  3. NASA Planetary Defense Coordination Office • DART is a tech demonstration to hit a representative asteroid • Mission managed by Johns Hopkins Applied Physics Lab • The PDCO is responsible for: • Finding and tracking near-Earth objects that pose of hazard of impacting Earth; • Characterizing those objects • Planning and implementation of measures to deflect or disrupt an object on an impact course with Earth
  4. Step 1: Build the Spacecraft Roll Out Solar Arrays NEXT-C Ion Thruster High Gain AntennaDRACO Imager
  5. 1. Launch 2. Cruise / Calibration 3. Target Detection / Coarse Acquisition 4. Scene Classification 5. Target Selection 6. Deploy Selfie-Sat 8. Impact Assessment Flyby of PHA allows sensor calibration and control-gain tuning Seeker counts and classifies closely spaced objects With sufficient confidence, seeker selects target and locks on Earth tracking & Selfie-Sat images quantify intercept success Selfie-Sat releases and executes a separation maneuver to trail DART Weeks prior to impact, seeker detects primary<7 months until impact> <108 km from target> <30 days until impact> <107 km from target> <3 hours until impact> <65,000 km from target> <1.5 hours until impact> <32,000 km from target> <~1.4 hour until impact> <~30,000 km from target> <Up to 3 months> 7. Homing Until Intercept Pro-Nav executes precision engagement and is robust to target uncertainties <Executed until final 2 minutes> <6.0 km/s Impact> Low Energy Escape With Rideshare <Jun 15 – Oct 15 2021> <108 km from target> Rideshare Orbit * 16 months total flight time Step 2: Hit the Target
  6. Goddard Space Flight Center Johnson Space Center Langley Research Center Glenn Research Center Marshall Space Flight Center Planetary Defense Coordination Office Step 3: Save the World (by validating the kinetic impact technique)
  7. Why DockerCon?
  8. Space is Hard! All factors drive: • Cost • Reliability • Low Memory (~16MB) • No virtual memory • 32 bit CPU (~100MHz) • Process • Testing. And more testing Vacuum Radiation Extreme distances (and timelines) Power Mass Single shot New Horizons - JHUAPL There are no space mechanics (yet) and turning it off and on again is NOT cool Infrequent Communication Thermal
  9. What Are We Trying to Solve? Hardware Scarcity • Testbeds cost > $300K • Configuration management is painful • Every developer/subsystem wants one What is the holy grail? • Hardware emulation! • Develop in software land • Test on real hardware • CD to other teams/real spacecraft
  10. Enablers for DART • NASA Core Flight Executive (Hardware/OS Abstraction) • Atlassian Bamboo (CI/CD) • Network architecture (SpaceWire) • COSMOS (Ground System) • Docker (Containers!)
  11. Development Setup
  12. Container Setup • 4 repos - Flight SW, Testbed SW, COSMOS, Docker_Env • 4 containers – Flight SW, Testbed SW, COSMOS, VNC • Run-time voluming of source code, containers are stateless • Provides outside dev environment with docker build capabilities • Keeps cross-compile toolchains standardized
  13. Docker Compose Network Setup • One instance comprises 4 containers (docker-compose) • UDP SpaceWire abstraction between FSW and TBSW • TCP radio abstraction between Ground and TBSW • Xforwarding Ground to X11 Server to VNC Flight Software Container VNC Container COSMOS Container Testbed Container
  14. VNC Window • Shameless plug for the creator – thanks Jan! • • • X11Server focuses on VNC and X setup • X11Client focuses on the application (COSMOS) • Brought up with compose, share xauth cookie through voluming • Runs X virtual frame buffer with Openbox • Contains the X security issues to the containers (we think) X11Server (container) COSMOS (container) VNC Viewer (dev machine) Xauth
  15. Demo
  16. Recap • DART • Why is space hard? • Voluming source code can be super helpful in development • VNC finally provides an easy window into containers
  17. The Final Moments…