Makes run-cosmos request a fleetlock lock before running cosmos "update"
and "apply" steps. This is helpful for making sure only one (or several)
machine out of some set of machines runs cosmos changes at a time. This
way if cosmos (or puppet) decides that a service needs to be restarted
this will only happen on a subset of machines at a time. When the cosmos
"apply" is done a fleetlock unlock request will be performed so the
other machines can progress.
The unlock code in run-cosmos will also run the new tool
sunet-machine-healthy to decide things are good before unlocking. This
way if a restarted service breaks this will stop the unlock attempt
and in turn make it so the others should not break their service as
well, giving an operator time to figure out what is wrong.
The db-file, essentially providing reverse lookup of classes to host
names, is only used by some Nagios configuration instances and causes
continuing operational headaches in those ops-repos.
It should be kept/refactored to only apply to the monitoring hosts in
the cases where it is used, but we don't want any new ops-repos to use
it hence it should be removed from upstream multiverse.
Fixes:
```
70run-post-tasks: invoking /var/cache/cosmos/model/post-tasks.d/018packages
Your configuration specifies to merge with the ref 'refs/heads/master'
from the remote, but no such ref was fetched.
```
Before this change there was a need to keep addhost and
bootstrap-cosmos.sh in sync regarding what version of the cosmos deb to
scp over and later run.
Now we find the latest version as decided by `sort -V` in both addhost
and bootstrap-cosmos.sh.
Solution discussed with @fredrikt.
Good idea to fail when unexpected things go wrong. Additional fixes
added to the script to not stop where we can expect a non-zero return
code.
Requested by @fredrikt who also reviewed the patch before going in,
thanks!
With recent GPG versions, a TTY seems to be required to import keys.
Since importing of keys need to work when running from cron, we
pass --no-tty to those commands. This should mean that -t doesn't
have to be passed to SSH on bootstrapping for new Debian hosts
(tested on Raspbian).
Patrik Lundin
Johan Wassberg
Fredrik Thulin
Leif Johansson
Fredrik Pettai
