Almost half of the issues are caused by their use of HashiCorp products.
As someone that has started tons of Consul clusters, analyzed tons of Terraform states, developed providers and wrote a HCL parser, I must say this:
HashiCorp built a brand of consistent design & docs, security, strict configuration, distributed-algos-made-approachable... but at its core, it's a very fragile ecosystem. The only benefit of HashiCorp headaches is that you will quickly learn Golang while reading some obscure github.com/hashicorp/blah/blah/file.go :)
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