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Fullstaq Ruby: First impressions, and how to migrate your Docker/Kubernetes Ruby apps today

Andrey Novikov on August 07, 2019

What is Fullstaq Ruby? Fullstaq Ruby is a custom build of standard MRI Ruby interpreter with memory allocator replaced, security patches...
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štef •

Love your grafana graphs. Do you maybe have a blog/repo where we can see how you setup those? :)

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Andrey Novikov Evil Martians •

No, we don't have any manual for those. It's dashboard for Kubernetes pods built for us by our Ops team.

There is nothing complicated–standard Grafana graphs and standard Kubernetes metrics. So if you have K8s cluster, Prometheus and Grafana, you can build something similar yourself in matter of minutes by using queries like these:

  1. Memory limit indicator (type: “singlestat”)

    avg(container_spec_memory_limit_bytes{pod_name=~"^.*-sidekiq.*", namespace="$application", container_name=~".*sidekiq.*"}) by (container_name)

  2. Memory consumption graph:

    sum (container_memory_working_set_bytes{image!="", pod_name=~"^.*sidekiq.*", namespace="$application", container_name=~".*sidekiq.*"}) by (pod_name)
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Archonic •

Any chance of getting an Alpine based image with fullstaq?

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Andrey Novikov Evil Martians •

Maybe when fullstaq labs will release their official Docker images ;-)

You can vote for this issue to show your support: github.com/fullstaq-labs/fullstaq-...

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Joe Rafaniello •

Interesting, I've only ever seen MALLOC_ARENA_MAX but not MALLOC_MAX_ARENA. Is it aliased but not documented?

gnu.org/software/libc/manual/html_...

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Andrey Novikov Evil Martians • • Edited

No, I've just messed it up while writing the post. Sorry. Only MALLOC_ARENA_MAX is correct. Fixed.