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fleetd: introduce Replaces option in unit files #1572

Merged
merged 4 commits into from
May 30, 2016
Merged

fleetd: introduce Replaces option in unit files #1572

merged 4 commits into from
May 30, 2016

Commits on May 30, 2016

  1. fleetd: introduce Replaces option in unit files 

    Introduce a new option 'Replaces' in X-Fleet the section, to get an
existing unit rescheduled to another machine. This option basically
works like an existing option 'Conflicts', except that circular replaces
in 2 units are not allowed. Also Conflicts cannot be used together with
Replaces, global cannot be used together with Replaces.

Fixes: coreos#1394
    Dongsu Park committed May 30, 2016
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  2. fleetd: add unit tests for Replaces option 

    Introduce necessary unit tests for testing a new unit option, Replaces.
Not only simple replaces, but also various combinations with Conflicts
or Global should be tested.
    Dongsu Park committed May 30, 2016
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  3. Documentation: add a description about Replaces option 

    Add a short description about a new option Replaces.
    Dongsu Park committed May 30, 2016
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  4. functional: a new test TestScheduleReplace 

    TestScheduleReplace starts 1 unit, followed by starting another unit
that replaces the 1st unit. Then it verifies that the 2 units are
started on different machines.
Also check that circular replaces result in 1 launched unit.
    Dongsu Park committed May 30, 2016
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