tripleo-heat-templates/releasenotes/notes/nova-memlock-increase-066ed22764ed3ce1.yaml
Tony Breeds 6ce5989e49 Increase the default memlock to 64MiB via `DockerNovaComputeUlimit`.
This builds on I0fb688bfe03cd0459f6f74ca37e3e6c913b0cbcb to raise the
ulimit for locked memory on nova containers[1].  This is needed because
of [2] where the transient container nova_cell_v2_discover_hosts fails
with permission denied on ppc64le

Note: this is a limit maximum not a pre-allocation so for existing
containers and architectures the impact is expected to be a no-op.

[1] Currently nova_compute and nova_cell_v2_discover_hosts
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1709564

Change-Id: I6d68431fd3c66c9496a36d3cfa9c2efe57e2ed99
2019-07-04 08:07:36 +10:00

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YAML

---
fixes:
- |
Certain nova containers require more locked memory that the default limit of 16KiB.
Increase the default memlock to 64MiB via ``DockerNovaComputeUlimit``.
As this is only a maximum limit and not a pre-allocatiosn this will not
increase the memory requirements for all nova containers. To date the only
container to require this is nova_cell_v2_discover_hosts which is short lived.