digesting/converting docker-compose into nomad

[Justin DynamicD]

Does anyone have a simple cli tool that can take a docker-compose file and spit out a nomad job?  I figured this would be rather trivial/common but turns out it's simply not.  

Scenario:  we have a internal tool that spits out docker-compose files for various micro-services, which then gets copied to a target node and run.  I'd like to effectively "step into" the process by using a tool to convert those docker-compose files into nomd job files and send them to the nomad server instead (and let a real scheduler do it's magic).  While there are obviously some additional values that would need to be added (like datacenter), I was hoping to find a simple tool I could call in bash and just "shim" into place (after the compose files are spit out I run "convert2nomad docker-compose.yaml nomad.hcl" and bam: I now have a hcl I can curl to the nomad servers.

I've googled around and saw some simple bash functions but they didn't work well with arrays, and to be quite honest I couldn't find an easy way in bash to even get a variable from a yaml file.  Anyone know of a tool that works (found some ruby code as well but it flat out errored)?

[Alex Dadgar]

Hey Justin,

As for as a I know such a tool does not exist! If you go down the road of creating one be sure to share with the community!

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Thanks,

Alex

[Justin DynamicD]

Well, unfortunately for the community (though good for me) it turns out our internal tool that spits out Docker-Compose does so by passing variables through a go template, so all I had to do is provide a nomad template and I seem to be good to go.

Lucky me!

On Monday, November 6, 2017 at 3:43:42 PM UTC-8, Alex Dadgar wrote:

Hey Justin,

As for as a I know such a tool does not exist! If you go down the road of creating one be sure to share with the community!

On Sat, Nov 4, 2017 at 1:53 PM, Justin DynamicD <justin....@gmail.com> wrote:

Does anyone have a simple cli tool that can take a docker-compose file and spit out a nomad job?  I figured this would be rather trivial/common but turns out it's simply not.  

Scenario:  we have a internal tool that spits out docker-compose files for various micro-services, which then gets copied to a target node and run.  I'd like to effectively "step into" the process by using a tool to convert those docker-compose files into nomd job files and send them to the nomad server instead (and let a real scheduler do it's magic).  While there are obviously some additional values that would need to be added (like datacenter), I was hoping to find a simple tool I could call in bash and just "shim" into place (after the compose files are spit out I run "convert2nomad docker-compose.yaml nomad.hcl" and bam: I now have a hcl I can curl to the nomad servers.

I've googled around and saw some simple bash functions but they didn't work well with arrays, and to be quite honest I couldn't find an easy way in bash to even get a variable from a yaml file.  Anyone know of a tool that works (found some ruby code as well but it flat out errored)?

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Thanks,

Alex