#dynolocker (2019-02)
https://github.com/joshmyers/dynolocker
Archive: https://archive.sweetops.com/dynolocker/
2019-02-06
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
@Erik Osterman (Cloud Posse) has joined the channel
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@joshmyers has joined the channel
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@mumoshu has joined the channel
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@joshmyers was just talking with @mumoshu about your tool
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
i’ve been referring a bunch of people over to dynolocker
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
there’s no good solution like this that does distributed locking.
![mumoshu avatar](https://secure.gravatar.com/avatar/8e045bf747ca7a90b1d955dc30217271.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0015-72.png)
@joshmyers hi!
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
@mumoshu has an interesting (common) use-case about renewing locks
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
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@Andriy Knysh (Cloud Posse) has joined the channel
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@joshmyers is based in GMT (London), so he’ll be online tomorrow
![michal.matyjek avatar](https://avatars.slack-edge.com/2019-01-18/527848430642_c3a6b53375f2fd851e05_72.png)
@michal.matyjek has joined the channel
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@michal.matyjek are you guys doing any distributed locking?
![dustinvb avatar](https://secure.gravatar.com/avatar/b841dbd22c0ed9d6076ba6e3579cc9fe.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0021-72.png)
@dustinvb has joined the channel
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I don’t remember
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
I was also sharing dynolocking with @dustinvb from codefresh
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
2 votes and 7 comments so far on Reddit
![mumoshu avatar](https://secure.gravatar.com/avatar/8e045bf747ca7a90b1d955dc30217271.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0015-72.png)
ah i remembered that i had created a very similar command myself 3 years ago, but in ruby https://github.com/crowdworks/joumae-ruby#cli
A client library for the Joumae lock service. Contribute to crowdworks/joumae-ruby development by creating an account on GitHub.
![mumoshu avatar](https://secure.gravatar.com/avatar/8e045bf747ca7a90b1d955dc30217271.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0015-72.png)
i definitely like a command written in golang am eager to submit a pr to dynolocker if that makes sense
![mumoshu avatar](https://secure.gravatar.com/avatar/8e045bf747ca7a90b1d955dc30217271.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0015-72.png)
dynolocker run --lock_name mylock --renew_interval 30s -- terraform apply
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
also wire it up with a codefresh pipeline to build binary releases
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
![michal.matyjek avatar](https://avatars.slack-edge.com/2019-01-18/527848430642_c3a6b53375f2fd851e05_72.png)
so the use case is…?
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
see the snippet above
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
basically, you need to lock something which could be used across pipelines or even within the same pipeline
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
for example, if you’re terraforming, you want to lock a project to a pull request
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
(e.g. like in atlantis)
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
also, i’ve had the problem we’re we merge 2 PRs too close to each other
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
and we end up doing concurrent helm deployments of the same app
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
we should really be locking a helm release before performing a helm deployment
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
that’s (2) very strong use-cases for locking
![mumoshu avatar](https://secure.gravatar.com/avatar/8e045bf747ca7a90b1d955dc30217271.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0015-72.png)
probably it is unlikely to happen when you run the pipeline on a new commit to e.g. master
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
(happened to me yesterday… and we have wait: true
, so second release was rolling out destroying pods from first release)
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
first release then was blocked by second release completing
![mumoshu avatar](https://secure.gravatar.com/avatar/8e045bf747ca7a90b1d955dc30217271.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0015-72.png)
but i do have encountered the same situation as erik’s in my terraform pipeline powered by github flow(the latest one, apply/deploy before merging for final testing)
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
i think for terraform it’s scarier
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
are you using codefresh with terraform now?
![mumoshu avatar](https://secure.gravatar.com/avatar/8e045bf747ca7a90b1d955dc30217271.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0015-72.png)
not yet, but i’m seriously considering to move to codefresh for anything related to github flow
2019-02-07
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
Morning
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
Sure, PRs always welcome
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
it was a hacky tool whipped up due to a race condition when bootstrapping Vault nodes (a few years back now)
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
locksmithctl
by coreOS may also be interesting
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
That one requires etcd, no?
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
Yeah it was based off etcd
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
That might not work well if running outside of k8s
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
dynolocker might not work well outside of AWS
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
well, def won’t
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
Haha well, kinda depends on what “outside” means ;-)
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
But yea, I get your point. For our purposes, AWS is an acceptable requirement.
![Erik Osterman (Cloud Posse) avatar](https://secure.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2Fdf10d%2Fimg%2Favatars%2Fava_0023-72.png)
(And already use it for terraform locking)
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
Yeah, I was going to try and do more with it and actually have it do sane things with process and signals etc but never got around to it
![joshmyers avatar](https://avatars.slack-edge.com/2018-11-20/483958217281_8117d6f6c62807ce9912_72.jpg)
huh, I like this Variant
2019-02-08
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@richwine has joined the channel