Thanks Nicolás for brining this to our attention and Stuart for shedding
light on how deep this bug runs. While it's true we're kind of tied to
doing what Juju does, that doesn't mean we can't look at ways to alleviate
this in Amulet to avoid tests to prevent them from failing.
On Fri, Feb 13, 2015 at 12:38 PM, Stuart Bishop <stuart.bis...@canonical.com
> wrote:
> On 13 February 2015 at 09:42, Nicolás Pace <nicop...@gmail.com> wrote:
> > Hi guys,
> > I'm having a problem with amulet.
> > i implemented a test with this chunk of code inside:
> >
> > logstash_indexer_agent = d.sentry.unit['logstash-indexer/0']
> > curl_response = logstash_indexer_agent.run("curl
> > http://127.0.0.1:9200/index/_search?size=1";)[0]
> > print(curl_response)
> >
> > that print is throwing this:
> > http://paste.ubuntu.com/10197382/
> >
> > I found a fixed bug that appears to be similar to this one:
> > https://bugs.launchpad.net/ubuntu-ci-services-itself/+bug/1283198
> >
> > Any idea what could it be?
>
> Good timing. This one bit me enough times today that I linked the
> original bug from 2011 to Amulet.
> https://bugs.launchpad.net/juju/+bug/802117.
>
> What is happening is juju pollutes both ~/.ssh/known_hosts and
> ~root/.ssh/known_hosts with provisioned host keys and they are never
> cleaned up. When the IP addresses gets recycled, which seems to happen
> a few times a day recently, all sorts of things start randomly
> failing. Particularly test suites that need to 'juju ssh' or 'juju
> run' stuff automatically.
>
> The simple fix is having juju pass an option to ssh to not use the
> user's known_hosts files, instead a file specific to the environment.
> Extra points for having juju clean out keys when machines are
> destroyed.
>
> --
> Stuart Bishop <stuart.bis...@canonical.com>
>
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