diffSystemAllocs -> diffSystemAllocsForNode, this function is only used
for diffing system allocations, but lacked awareness of eligible
nodes and the node ID that the allocation was going to be placed.
This change now ignores a change if its existing allocation is on an
ineligible node. For a new allocation, it also checks tainted and
ineligible nodes in the same function instead of nil-ing out the diff
after computation in diffSystemAllocs
If an alloc is being preempted and marked as evict, but the underlying
node is lost before the migration takes place, the allocation currently
stays as desired evict, status running forever, or until the node comes
back online.
This commit updates updateNonTerminalAllocsToLost to check for a
destired status of Evict as well as Stop when updating allocations on
tainted nodes.
switch to table test for lost node cases
Fixes documentation inaccuracy for spread stanza placement. Spreads can
only exist on the top level job struct or within a group.
comment about nil assumption
Adds checks for affinity and constraint changes when determining if we
should update inplace.
refactor to check all levels at once
check for spread changes when checking inplace update
Adds a new Prerun and Postrun hooks to manage set up of network namespaces
on linux. Work still needs to be done to make the code platform agnostic and
support Docker style network initalization.
IOPS have been modelled as a resource since Nomad 0.1 but has never
actually been detected and there is no plan in the short term to add
detection. This is because IOPS is a bit simplistic of a unit to define
the performance requirements from the underlying storage system. In its
current state it adds unnecessary confusion and can be removed without
impacting any users. This PR leaves IOPS defined at the jobspec parsing
level and in the api/ resources since these are the two public uses of
the field. These should be considered deprecated and only exist to allow
users to stop using them during the Nomad 0.9.x release. In the future,
there should be no expectation that the field will exist.
This PR skips adding an inplace update to a successfully terminal batch
job to the plan. This avoids extra data in the plan and avoids
triggering updates on all clients that have the terminal allocation.
This is matching behavior of the service scheduler.
/cc @armon for review
