There are better tools than sed. You might be stuck on a minimal system, but other people looking for an answer probably won’t be. The python version of yq acts like jq: $ pip3 install yq $ yq -r .test.database database.yml sample shyaml works too, but has an odd restriction that you can only redirect … Read more
The short answer is that both are valid because they are unambiguous for the YAML parser. This fact was already pointed by the other answers, but allow me to add some gasoline to this discussion. YAML uses indentation not only for aesthetics or readability, it has a crucial meaning when composing different data structures and … Read more
One thing is what is allowed, another is what is human readable. Spaces are allowed in keys according to the specification and for those you don’t need quotes (double or single, each with their own use). It is just a scalar string containing a space. As for human readability, I tend to think of a … Read more
And the answer is: URL: Description: URL of the website Value: “Fn::Join”: – “” – – “http://” – “Fn::GetAtt”: – ElasticLoadBalancer – DNSName (see http://pyyaml.org/wiki/PyYAMLDocumentation#YAMLsyntax – “block sequences can be nested”)
No. Per the YAML 1.2 spec “Comments must not appear inside scalars”. Which is exactly the case here. There’s no way in YAML to escape the octothorpe symbol (#) so within a multi-line string there’s no way to disambiguate the comment from the raw string value. You can however interleave comments within a collection. For … Read more
The spec isn’t very clear, but after a bit of head-scratching I figured it out. YAML has two kinds of block mapping keys: implicit and explicit. The implicit style is the kind you’re familiar with: mapping: foo: 1 bar baz: 2 “qux:quux”: 3 If we load this YAML in Ruby (for example) we get the … Read more
Well, those are elements of the YAML file format, which is used here to provide a configuration file for configtxgen. The “&” sign mean anchor and “*” reference to the anchor, this is basically used to avoid duplication, for example: person: &person name: “John Doe” employee: &employee << : *person salary : 5000 will reuse … Read more
You indicate you think the YAML format is normal, but it is not. This is a YAML error caused by the line at the end of the first document, starting with kubernetes.io/hostname being indented relative to the one before it. Because these are both key-value pair lines (i.e. item pairs of a block-style mapping) instead … Read more