Maas instance plugin #411

YujiOshima · 2017-02-23T05:51:12Z

Support BareMetal deployment.
An Instance plugin for Canonical MaaS node.
#398

Signed-off-by: Yuji Oshima <yuji.oshima0x3fd@gmail.com>

codecov-io · 2017-02-23T06:15:49Z

Codecov Report

Merging #411 into master will decrease coverage by -1.07%.
The diff coverage is 43.92%.

@@            Coverage Diff             @@
##           master     #411      +/-   ##
==========================================
- Coverage   62.91%   61.85%   -1.07%     
==========================================
  Files          62       64       +2     
  Lines        3613     3827     +214     
==========================================
+ Hits         2273     2367      +94     
- Misses       1089     1172      +83     
- Partials      251      288      +37

Impacted Files	Coverage Δ
examples/instance/maas/main.go	`0% <0%> (ø)`
examples/instance/maas/instance.go	`48.7% <48.7%> (ø)`

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chungers · 2017-02-23T06:43:10Z

@YujiOshima - nice work. Just a general question... does MAAS support the notion of detachable disk / volumes? At least with the AWS plugin at https://github.com/docker/infrakit.aws it understands the Attachment of type ebs. This ability is very interesting for cases of supporting stateful instances where attachable volumes store state and instances can come and go.

Does this model make sense for MAAS or for bare-metal where disks/volumes can be attached /detached from compute instances?

YujiOshima · 2017-02-23T07:32:37Z

@chungers Thank you!
That's good idea and important function for common "Pet" use case in the on-premises ! I didn't test that use case, but I think It can be done with iSCSI.
I will try to support volume store along with other functions. Now MaaS plugin is very incomplete, should be enhanced step by step.

Lennie · 2017-02-23T09:36:04Z

In the meantime you could always use Docker volume plugin. For example just have 1 NFS share and create sub directories in your container when they don't exist yet. That way you don't need to request a share.

YujiOshima · 2017-02-23T10:03:40Z

@Lennie Thank you for the comment. Only for docker swarm flavor and an app in the docker container, It is true. But for other flavor or outside of docker container (I don't know the specific use case, may be docker daemon config or something), you need Infrakit volume management.

Lennie · 2017-02-23T10:28:34Z

Just saying workarounds are possible if you need to deploy soon and can't wait. Or need something for a dev. env. on a laptop. Also just realized you can create NFS server as a docker container as well.

But would be great to have a proper option for MAAS. But also don't forget the dev. laptop.

YujiOshima · 2017-02-23T12:00:44Z

@Lennie Thank you for a good point. Yes, we need to do a lot of things before volume management.
At first I think that we can restrict the scope to only docker swarm or vanilla flavor.

chungers · 2017-02-23T18:42:47Z

examples/instance/maas/README.md

+Set up nodes.
+
+```
+./setup-nodes.sh


Is this file included in this PR? I don't see it. Would you mind including it?

I update the Readme. Now I have only a simple document, but I will enhance it with the addition of functions.

Sorry I was confused. This is a file from your repo... I see now, so there's no need to include this.

chungers · 2017-02-23T19:10:00Z

examples/instance/maas/instance.go

+	if err != nil {
+		return err
+	}
+	return ioutil.WriteFile(tagFile, encoded.Bytes(), 0666)


Files are written locally to store tags... is there a way in MAAS to tag resources and query by tags? https://docs.ubuntu.com/maas/2.1/en/intro-concepts#tags

If we can reduce amount of state we need store locally, the better. If there are ways to do tagging via the MAAS api, then we should consider making that change in a future PR?

I think that is a better implementation. This time we implemented it in a simple way that does not depend on the api version, but we will change the information to keep it in a robust way without duplication.

chungers · 2017-02-23T19:11:52Z

examples/instance/maas/instance.go

+}
+
+// DescribeInstances returns descriptions of all instances matching all of the provided tags.
+func (m maasPlugin) DescribeInstances(tags map[string]string) ([]instance.Description, error) {


See comment above -- is there a way in MAAS to query by tags of the nodes? Using files here is ok but we'd have to make sure these files are highly available.

chungers · 2017-02-23T19:12:38Z

examples/instance/maas/maas-vanilla.yml

@@ -0,0 +1,24 @@
+{


This file is named .yml but the content is a JSON...

Oh..This is a mistake. Fixed.

Signed-off-by: Yuji Oshima <yuji.oshima0x3fd@gmail.com>

chungers · 2017-02-26T00:47:31Z

@YujiOshima - Before I can merge this PR, can you please add a few tests? You can look at the plugin_test.go in the terraform plugin as an example?

Also, once this PR is accepted, would you mind open an issue (and assign to yourself) on improving this plugin by using MAAS tagging API to implement the instance state persistence? I want to make sure that if we accept this PR, this plugin will continue to be improved and is useful for those learning to work with InfraKit. Thank you!

GordonTheTurtle · 2017-02-26T06:44:57Z

Please sign your commits following these rules:
https://github.com/docker/docker/blob/master/CONTRIBUTING.md#sign-your-work
The easiest way to do this is to amend the last commit:

$ git clone -b "maas" git@github.com:YujiOshima/infrakit.git somewhere
$ cd somewhere
$ git rebase -i HEAD~842354523656
editor opens
change each 'pick' to 'edit'
save the file and quit
$ git commit --amend -s --no-edit
$ git rebase --continue # and repeat the amend for each commit
$ git push -f

Amending updates the existing PR. You DO NOT need to open a new one.

Signed-off-by: Yuji Oshima <yuji.oshima0x3fd@gmail.com>

YujiOshima · 2017-02-27T05:43:59Z

@chungers Yeah! I added a few tests!

open an issue

Of course! I will do so soon. And I want to proceed while discussing.

YujiOshima · 2017-02-27T05:58:51Z

I used a gomaasapi.testservice for test this plugin.
You can test using this for the basic function of MasS.

chungers

LGTM -- Let's get this merged in and we can start iterating on this. We can incubate this plugin in this repo and spin it off to a separate project when it's ready.

Added support for dynamic DDC generation

YujiOshima added 3 commits February 23, 2017 14:46

add maas instance plugin

8908c89

Signed-off-by: Yuji Oshima <yuji.oshima0x3fd@gmail.com>

add libralies

2223890

Signed-off-by: Yuji Oshima <yuji.oshima0x3fd@gmail.com>

fix

1aa3539

Signed-off-by: Yuji Oshima <yuji.oshima0x3fd@gmail.com>

chungers reviewed Feb 23, 2017

View reviewed changes

update documents

39bd23c

Signed-off-by: Yuji Oshima <yuji.oshima0x3fd@gmail.com>

Merge branch 'master' into maas

57f4d96

GordonTheTurtle added the dco/no label Feb 26, 2017

add test

dea4488

Signed-off-by: Yuji Oshima <yuji.oshima0x3fd@gmail.com>

chungers approved these changes Feb 28, 2017

View reviewed changes

chungers merged commit c0f3d59 into docker-archive:master Feb 28, 2017

chungers pushed a commit to chungers/infrakit that referenced this pull request Sep 30, 2017

Merge pull request docker-archive#411 from docker/ddc-dynamic

a475bcc

Added support for dynamic DDC generation

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Maas instance plugin #411

Maas instance plugin #411

YujiOshima commented Feb 23, 2017

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Maas instance plugin #411

Maas instance plugin #411

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