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gron makes nested JSON greppable https://github.com/tomnomnom/gron https://github.com/tomnomnom/gron

• hoherd 2y ago
  `gron` is so underrated. Usually when I try to show people who useful it is they don't seem to understand how powerful it is. One common use is showing how to customize only one part of a helm chart by checking values of an already installed chart: $ helm get values -n $NS $DEPLOYMENT -o json | gron | grep resources | gron -u | json-to-yaml.py elasticsearch: client: resources: limits: cpu: 3 memory: 4Gi requests: cpu: 1 memory: 2Gi data: resources: limits: cpu: 6 memory: 6Gi requests: cpu: 200m memory: 2Gi fluentd: resources: limits: memory: 768Mi requests: memory: 384Mi That snip could be provided to another team or a customer as a yaml file that could be included with `helm upgrade -f whatever.yaml`. This is soooo much easier than digging that limited set of data out of the much more detailed data.