juju attach unnecessary interfaces to lxd container

[Vladimir Burlakov]

Hello everyone!
I try to deploy an application to lxd container on manually attached machine 
(ubuntu-xenial) 
and container do not start, with the error - «Missing parent 'docker_gwbridge’ 
for nic ‘eth2’». 
I see in the logs, that juju tries to add docker interfaces to the container, 
though on a target 
machine default lxd profile has no such interfaces.. I wonder, if someone can 
help me to fix
the issue? 

-
$ juju --version: 
2.2.6-xenial-amd64

-
yaml file of the application, that i trying to deploy: 
$ cat keystone.yaml
keystone:
 admin-password: openstack
 openstack-origin: 'cloud:xenial-pike'
 worker-multiplier: 0.25

-
Default profile on a target machine: 
—
### Note that the name is shown but cannot be changed
config: {}
description: Default LXD profile
devices:
 eth0:
   name: eth0
   nictype: bridged
   parent: br0
   type: nic
name: default
—

-
juju machines: 
—
Machine  StateDNSInst id   Series  AZ  Message
0started  10.199.200.17  manual:10.199.200.17  xenial  Manually 
provisioned machine
0/lxd/2  downpending   xenial  Missing 
parent 'docker_gwbridge' for nic 'eth2'
—

juju log, from target machine: 
—
2017-11-24 11:48:48 INFO juju.container.lxd lxd.go:176 instance 
"juju-99d66a-0-lxd-2" configured with map[eth0:map[nictype:bridged name:eth0 
parent:br0 hwaddr:00:16:3e:d3:42:fc mt
u:1500 type:nic] eth1:map[mtu:1500 type:nic nictype:bridged name:eth1 
parent:docker0 hwaddr:00:16:3e:40:4a:7e] eth2:map[name:eth2 
parent:docker_gwbridge hwaddr:00:16:3e:e6:fb:5a m
tu:1500 type:nic nictype:bridged]] network devices
2017-11-24 11:48:48 INFO juju.container.lxd lxd.go:187 starting instance 
"juju-99d66a-0-lxd-2" (image "juju/xenial/amd64")...
2017-11-24 11:48:51 WARNING juju.provisioner provisioner_task.go:747 failed to 
start instance (Missing parent 'docker_gwbridge' for nic 'eth2'), retrying in 
10s (10 more attempts)
/docker
—

Thanks, 
Vladimir Burlakov
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Re: "juju attach"

[Andrew Wilkins]

On Sun, Jun 19, 2016 at 1:51 AM Mark Shuttleworth  wrote:

> On 18/06/16 16:45, Marco Ceppi wrote:
> >
> > Why not just "add" which is already pretty well used. Throughout the
> > Juju CLI.
> >
>
> Well, I think the context here is more attach-a-disk. I really like
> Roger's suggestion of 'mount', it immediately brings all the right
> elements into focus, and it's only one syllable.
>

I concur that add is not really appropriate here, and that mount makes a
lot of sense for storage (thanks for the suggestion, Roger). For me,
"attach" does not have similar connotations re resources, but at least
there's no looming danger of conflict with storage. I can't think of a
better single word, either.

We've got hooks called "storage-attached", and "storage-detaching", which
are in use by existing charms, and baked into charm helpers and probably
elsewhere. I don't think we can/should change these, or we'll have charms
that work with 2.0 but not 1.25, and vice versa. I think we should change
the statuses though, to keep the user-visible parts aligned.

Cheers,
Andrew


> Mark
>
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Re: "juju attach"

[Andrew Wilkins]

On Sun, Jun 19, 2016 at 1:51 AM Mark Shuttleworth  wrote:

> On 18/06/16 16:45, Marco Ceppi wrote:
> >
> > Why not just "add" which is already pretty well used. Throughout the
> > Juju CLI.
> >
>
> Well, I think the context here is more attach-a-disk. I really like
> Roger's suggestion of 'mount', it immediately brings all the right
> elements into focus, and it's only one syllable.
>

I concur that add is not really appropriate here, and that mount makes a
lot of sense for storage (thanks for the suggestion, Roger). For me,
"attach" does not have similar connotations re resources, but at least
there's no looming danger of conflict with storage. I can't think of a
better single word, either.

We've got hooks called "storage-attached", and "storage-detaching", which
are in use by existing charms, and baked into charm helpers and probably
elsewhere. I don't think we can/should change these, or we'll have charms
that work with 2.0 but not 1.25, and vice versa. I think we should change
the statuses though, to keep the user-visible parts aligned.

Cheers,
Andrew


> Mark
>
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Re: "juju attach"

[Mark Shuttleworth]

On 18/06/16 16:45, Marco Ceppi wrote:
>
> Why not just "add" which is already pretty well used. Throughout the
> Juju CLI.
>

Well, I think the context here is more attach-a-disk. I really like
Roger's suggestion of 'mount', it immediately brings all the right
elements into focus, and it's only one syllable.

Mark

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Re: "juju attach"

[Mark Shuttleworth]

On 18/06/16 16:45, Marco Ceppi wrote:
>
> Why not just "add" which is already pretty well used. Throughout the
> Juju CLI.
>

Well, I think the context here is more attach-a-disk. I really like
Roger's suggestion of 'mount', it immediately brings all the right
elements into focus, and it's only one syllable.

Mark

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Re: "juju attach"

[Marco Ceppi]

Why not just "add" which is already pretty well used. Throughout the Juju
CLI.

Marco

On Sat, Jun 18, 2016, 5:52 AM roger peppe  wrote:

> mount ?
>
> On 18 June 2016 at 09:23, Mark Shuttleworth  wrote:
> >
> > We can change a CLI until RC, and its good for us to debate them.
> >
> > Here are the guiding principles.
> >
> >  * shorter is better, much much better
> >  * we strongly prefer one word to always mean the same thing
> >  * we strongly prefer a unique verb to a common-verb-plus-noun
> >
> > For the latter reason I prefer not to go to attach-storage, attach-nic
> > and attach-cpu...  What you're looking for is a 1-3 syllable single verb
> > which is distinct, nice to say, quick to tab-complete, and preferably
> > implies storage.
> >
> > The one exception I can think  of is list-* where we like the
> > tab-complete "tell me about all the things" experience.
> >
> > Suggestions welcome for the word, but these are the principles we'll
> > decide by. I may add more principles later :)
> >
> > Mark
> >
> >
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Re: "juju attach"

[roger peppe]

mount ?

On 18 June 2016 at 09:23, Mark Shuttleworth  wrote:
>
> We can change a CLI until RC, and its good for us to debate them.
>
> Here are the guiding principles.
>
>  * shorter is better, much much better
>  * we strongly prefer one word to always mean the same thing
>  * we strongly prefer a unique verb to a common-verb-plus-noun
>
> For the latter reason I prefer not to go to attach-storage, attach-nic
> and attach-cpu...  What you're looking for is a 1-3 syllable single verb
> which is distinct, nice to say, quick to tab-complete, and preferably
> implies storage.
>
> The one exception I can think  of is list-* where we like the
> tab-complete "tell me about all the things" experience.
>
> Suggestions welcome for the word, but these are the principles we'll
> decide by. I may add more principles later :)
>
> Mark
>
>
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Re: "juju attach"

[roger peppe]

mount ?

On 18 June 2016 at 09:23, Mark Shuttleworth  wrote:
>
> We can change a CLI until RC, and its good for us to debate them.
>
> Here are the guiding principles.
>
>  * shorter is better, much much better
>  * we strongly prefer one word to always mean the same thing
>  * we strongly prefer a unique verb to a common-verb-plus-noun
>
> For the latter reason I prefer not to go to attach-storage, attach-nic
> and attach-cpu...  What you're looking for is a 1-3 syllable single verb
> which is distinct, nice to say, quick to tab-complete, and preferably
> implies storage.
>
> The one exception I can think  of is list-* where we like the
> tab-complete "tell me about all the things" experience.
>
> Suggestions welcome for the word, but these are the principles we'll
> decide by. I may add more principles later :)
>
> Mark
>
>
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Re: "juju attach"

[Mark Shuttleworth]

We can change a CLI until RC, and its good for us to debate them.

Here are the guiding principles.

 * shorter is better, much much better
 * we strongly prefer one word to always mean the same thing
 * we strongly prefer a unique verb to a common-verb-plus-noun

For the latter reason I prefer not to go to attach-storage, attach-nic
and attach-cpu...  What you're looking for is a 1-3 syllable single verb
which is distinct, nice to say, quick to tab-complete, and preferably
implies storage.

The one exception I can think  of is list-* where we like the
tab-complete "tell me about all the things" experience.

Suggestions welcome for the word, but these are the principles we'll
decide by. I may add more principles later :)

Mark


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Re: "juju attach"

[Mark Shuttleworth]

We can change a CLI until RC, and its good for us to debate them.

Here are the guiding principles.

 * shorter is better, much much better
 * we strongly prefer one word to always mean the same thing
 * we strongly prefer a unique verb to a common-verb-plus-noun

For the latter reason I prefer not to go to attach-storage, attach-nic
and attach-cpu...  What you're looking for is a 1-3 syllable single verb
which is distinct, nice to say, quick to tab-complete, and preferably
implies storage.

The one exception I can think  of is list-* where we like the
tab-complete "tell me about all the things" experience.

Suggestions welcome for the word, but these are the principles we'll
decide by. I may add more principles later :)

Mark


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"juju attach"

[Andrew Wilkins]

Hi folks,

A couple of days ago I started looking at charming TitanDB. I was looking
at using resources to store the TitanDB distribution, and while looking at
the docs [0] I found a rather surprisingly named command: "juju attach".

The verb "attach" by itself tells me that, presumably, it will attach
something to something else. It doesn't tell me what. And because it's
non-specific, it either rules out the possibility of multiple unrelated
attach-type commands.

We always intended to give the user a means of attaching floating storage
to a unit/machine. i.e. I should be able to detach and reattach storage to
units in a model, so long as the storage provider supports it. I think the
commands would naturally be called "attach-storage" and "detach-storage".

Can we rename attach to attach-resource? Note that there's also "charm
attach". That may benefit from a similar rename too, at least to be
consistent.

Cheers,
Andrew

[0] https://jujucharms.com/docs/devel/developer-resources
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