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eremetic-framework / eremetic

A Framework for Mesos to run one-off tasks in docker
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Add documentation for how to setup eremetic framework to support failovers #211

Open bbannier opened 5 years ago

bbannier commented 5 years ago

Currently there is not clear and sound documentation on how users should set up eremetic so that scheduler failovers are supported. Since currently eremetic does not itself persist its framework_info or master-assigned framework_id, users are required to work around this.

Since Mesos does not have explicit support for self-assigned framework_id values, the workaround mentioned in #181 is not safe. Mesos will start enforcing some validation on used framework_id values with MESOS-9469 which might break workflows where users self-assign certain values.

A sound approach would be

  1. start the scheduler with no framework_id set in the config file
  2. watch logs for the assigned framework_id
  3. update config file to contain the master-assigned framework_id
  4. reregister scheduler

Eremetic should have some clear documentation on how to set up eremetic in a sound way.

keis commented 5 years ago

Thanks for the heads up @bbannier that does sound like the simplest way of doing this for now. Maybe we could display the frameworkid somewhere to make it easier to find.