This commit makes several changes to the dockerfile:
- Add go.mod and go.sum in a seperate stage, subsequently calling `go
mod download` to make it cache dependencies and speed up builds
- Use ubuntu:latest (28MB larger) instead of scratch, makes the image a
lot easier to debug (e.g. it has a shell and a package manager)
- Change ENTRYPOINT to CMD, this makes the behaviour of the image
slightly different from a CLI perspective, but makes interacting with
the image from code, docker-compose and kubernetes easier.
This is based on the premis that "the user know what command they
executed" and therefor know that the output is the key.
This makes the command a lot more useful in scripts.
This commit tries to detect if users can render colors in their terminal
and only enables color logs if that is true.
It also adds no-color.org's NO_COLOR env var support to allow it to be
disabled.
This commit removes most of the locks in the PollingMap handler as there
was combinations that caused deadlocks. Instead of doing a plain map and
doing the locking ourselves, we use sync.Map which handles it for us.
This commit reworks getAvailableIp with a "simpler" version that will
look for the first available IP address in our IP Prefix.
There is a couple of ideas behind this:
* Make the host IPs reasonably predictable and in within similar
subnets, which should simplify ACLs for subnets
* The code is not random, but deterministic so we can have tests
* The code is a bit more understandable (no bit shift magic)
This commit makes the IP prefix used to generate addresses configurable
to users. This can be useful if you would like to use a smaller range or
if your current setup is overlapping with the current range.
The current range is left as a default
Kristoffer Dalby
Juan Font
Felix Yan