openstack
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openstack-virtual-baremetal
Code Issues Proposed changes

Update MTU instructions 

It turns out that it is also necessary to change the MTU of the
undercloud provisioning interface.  In addition, the default MTU
for instances in a stock TripleO cloud is now 1350, so the previous
documented value of 1450 doesn't actually work anymore.
This commit is contained in:
Ben Nemec 2016-05-24 11:57:28 -05:00
parent acf1b0979b
commit 1b742855db
1 changed files with 6 additions and 3 deletions
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9
README.rst
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@ -82,11 +82,14 @@ host cloud.
TripleO undercloud, Neutron should be configured to advertise a
smaller MTU to instances. Run the following as root::
echo -e "\ndhcp-option-force=26,1450" >> /etc/dnsmasq-ironic.conf
systemctl restart neutron-*
# Replace 'eth1' with the actual device to be used for the
# provisioning network
ip link set eth1 mtu 1350
echo "dhcp-option-force=26,1350" >> /etc/dnsmasq-ironic.conf
systemctl restart 'neutron-*'
If network isolation is in use, the templates must also configure
mtu as discussed above, except the mtu should be set to 1450 instead
mtu as discussed above, except the mtu should be set to 1350 instead
of 1550.
#. (Optional) It can be helpful to set::