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authorBrent Eagles <beagles@redhat.com>2016-10-05 15:36:00 -0230
committerBrent Eagles <beagles@redhat.com>2016-11-11 10:10:28 -0330
commiteec4587bc77de49acdae29a86c9e197cb3b194db (patch)
tree196742f5635048d74e471897241fbd327038f222
parentff86a856a61ef2d177e05cb5a26d87f7d5741c78 (diff)
Increase reserved memory for computes when enabling DVR
This patch adds an example increased value for NovaReservedHostMemory and some documentation around tuning this value when DVR is enabled. Closes-Bug: #1630583 Change-Id: I2718d72d307a1c90061606e5f36c96f964cd2fb5
-rw-r--r--environments/neutron-ovs-dvr.yaml13
1 files changed, 13 insertions, 0 deletions
diff --git a/environments/neutron-ovs-dvr.yaml b/environments/neutron-ovs-dvr.yaml
index b658d3a5..f4f9990c 100644
--- a/environments/neutron-ovs-dvr.yaml
+++ b/environments/neutron-ovs-dvr.yaml
@@ -37,3 +37,16 @@ parameter_defaults:
# NeutronL3HA can be returned to false. All new systems should be deployed
# with NeutronL3HA set to false.
NeutronL3HA: false
+
+ # Enabling DVR deploys additional services to the compute nodes that through
+ # normal operation will consume memory. The amount required is roughly
+ # proportional to the number of Neutron routers that will be scheduled to
+ # that host. It is necessary to reserve memory on the compute nodes to avoid
+ # memory issues when creating instances that are connected to routed
+ # networks. The current expected consumption is 50 MB per router in addition
+ # to the base reserved amount. Deployers should refer to existing
+ # documentation, release notes, etc. for additional information on estimating
+ # an appropriate value. The provided value here is based on an estimate of 10
+ # routers and is an example value *only* and should be reviewed and modified
+ # if necessary before deploying.
+ NovaReservedHostMemory: 2560