Hands-On Microservices with Kubernetes

YAML format

You've seen a lot of YAML (https://yaml.org/) already in this book, since the Kubernetes manifests are often written as YAML. YAML is a superset of JSON, but it also provides a much more concise syntax that is extremely human readable, as well as many more features, such as references, the autodetection of types, and support for aligned multiline values.

Here is a sample YAML file with more fancy features than you typically see in a normal Kubernetes manifest:

# sequencer protocols for Laser eye surgery---- step:  &id001                  # defines anchor label &id001    instrument:      Lasik 3000    pulseEnergy:     5.4    pulseDuration:   12    repetition:      1000    spotSize:        1mm- step: &id002    instrument:      Lasik 3000    pulseEnergy:     5.0    pulseDuration:   10    repetition:      500 spotSize: ...