Chengwei,
You can restart the leading master (with new roles/config), and running
frameworks/slaves will re-register with it. Tasks will keep running. You
probably want to restart the non-leading masters first with the new config,
so that it will be picked up on HA failover.
You can also restart the slave processes with the new resource-roles config
and running tasks will continue running, as long as you have slave
checkpointing enabled.
You also need to restart the framework-scheduler so that it can reregister
with the new role (in its FrameworkInfo), and get new offers appropriate
for that role. Tasks will keep running.
You need to restart the master (with new roles config) before restarting
the framework (with new role in its FrameworkInfo), or else the framework
will fail to reregister ("Role 'foo' is not valid."). I would recommend
restarting the master first, then the slave(s), then the framework.
Currently running tasks will continue running, regardless of role
configuration. The new role(s) will only apply to new resource offers.
Hope that helps,
-Adam-
On Tue, May 13, 2014 at 2:31 PM, Vinod Kone <[email protected]> wrote:
> Hey Chengwei,
>
> Mesos doesn't allow online update of its configuration. The only
> exception, so far, has been the VLOG level.
>
> To update resources, you should roll the slave with new flags.
>
>
> On Sun, May 11, 2014 at 12:02 AM, Chengwei Yang <
> [email protected]> wrote:
>
>> Hi List,
>>
>> Generally I have a question: does mesos cluster can reload configuration
>> on the fly? Without side-effect to on-top frameworks, jobs?
>>
>> I have read the upgrad guide,
>> http://mesos.apache.org/documentation/latest/upgrades/
>>
>> and slave recovery guide,
>> http://mesos.apache.org/documentation/latest/slave-recovery/
>>
>> However, I didn't see any statement says about does the upgrade hurt
>> on-top frameworks, jobs.
>>
>> My situation is: I have a mesos 0.16 cluster up and running, some
>> frameworks and jobs running, and I want to add another framework, and
>> like to add a dedicate role for it, so change should made to mesos
>> master, and resolve some resources for it, so change should made to
>> mesos slaves.
>>
>> Could I do this seamlessly? Thanks in advance!
>>
>> --
>> Thanks,
>> Chengwei
>>
>
>
