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Integrating Containers Into JavaScript
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Lucas Santos
May 14, 2021
Technology
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Integrating Containers Into JavaScript
Lucas Santos
May 14, 2021
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Transcript
Integrating containers in JavaScript the good, the bad, and the
ugly
cloud advocate_ who am I_
[email protected]
{twitter, facebook, linkedin…}.lsantos.dev
containers are a thing_
it’s easy to control them
if you are human_
what if you’re not?
then we use containerd - High-level runtime (runtime manager) created
by the Open Container Initiative - Powers Docker - Created to be manipulated through code
not so easy for JS devs
Golang predominance
Then I came across this article_
What if I did this using Node.js?
The first attempt sometimes good, mostly bad, but always ugly
use child-process
pros - Super easy - Takes advantage of ctr’s built
in features - Faster implementation - Can be integrated with any external API
so easy that I built this
to the code
cons - heavily dependent on environment - no complete control
over the process - Limited to parsing the string outputs - Error handling is poor - Needs sudo - Input sanitizing
conclusion: we can integrate containers into JS
but I wanted a real integration
The second attempt mostly good, sometimes bad, kinda pretty
containerd was meant to be extended
but you need to know how to do it
None
None
but it is possible
to the code
pros - Proper error handling - Proper return codes -
Allows you full control of the pipeline - Does not need to be in the same machine - Does not require sudo - Native (gRPC module)
cons - Requires a LOT of knowledge in containers -
Sparse documentation both for gRPC and containerd - Harder - Might be a problem to connect to external servers - CRT certificates and so on
Next steps what can we do next?
let’s make this a good tool
Let’s add more knowledge to the Web!
refs_ - github.lsantos.dev/containerd-integration-example - github.lsantos.dev/js-containerd-example - github.lsantos.dev/containerd-js - Mark’s article
bit.ly/containerd-grpc-web These Slides: - slides.lsantos.dev/integrating-containers-into-javascript
thank you_ info.lsantos.dev