Comment 10 for bug 1468579

I just hit this on 1.24.3 on trusty:

Attempt 1 to download tools from https://streams.canonical.com/juju/tools/releases/juju-1.24.3-trusty-amd64.tgz...
tools from https://streams.canonical.com/juju/tools/releases/juju-1.24.3-trusty-amd64.tgz downloaded: HTTP 200; time 3.569s; size 16686360 bytes; speed 4675045.000 bytes/s Tools downloaded successfully.
a07f31a56a32224207b2d64de13c49101eaf3e5131b4f0b78fba1ef43aeda8d1 /var/lib/juju/tools/1.24.3-trusty-amd64/tools.tar.gz
2015-08-07 07:53:02 INFO juju.cmd supercommand.go:37 running jujud [1.24.3-trusty-amd64 gc]
2015-08-07 07:53:02 INFO juju.network network.go:194 setting prefer-ipv6 to false
2015-08-07 07:53:02 INFO juju.provider.openstack provider.go:243 opening environment "devel3"
2015-08-07 07:53:03 INFO juju.agent identity.go:22 writing system identity file
2015-08-07 07:53:03 INFO juju.mongo mongo.go:173 Ensuring mongo server is running; data directory /var/lib/juju; port 37017
2015-08-07 07:53:03 INFO juju.mongo mongo.go:348 installing juju-mongodb
2015-08-07 07:53:03 INFO juju.utils.packaging.manager utils.go:57 Running: apt-get --option=Dpkg::Options::=--force-confold --option=Dpkg::options::=--force-unsafe-io --assume-yes --quiet install juju-mongodb
2015-08-07 07:58:07 INFO juju.worker.peergrouper initiate.go:78 finished MaybeInitiateMongoServer
2015-08-07 07:58:07 ERROR juju.cmd supercommand.go:430 cannot initiate replica set: cannot dial mongo to initiate replicaset: no reachable servers
ERROR failed to bootstrap environment: subprocess encountered error code 1