HPCoD: Making OpenHPC work

Make OpenHPC work within Openstack

• Change the MTU of the internal network to 9000 on the hypervisors and the network node (it's not needed on the controller). Don't forget to do that on the corresponding switch ports as well

• In the physical, hypervisor nodes edit the /usr/lib/python2.7/site-packages/neutron/agent/linux/iptables_firewall.py and comment out lines 444,445,446, from the _drop_dhcp_rule function

• Disable security groups and port security on the neutron port of the VM ohpc compute nodes:

#Identify the port by MAC address or ip:
[root@bios-ohpc ~]# neutron port-list | grep 44:6d
| 599c2814-37e4-4085-953e-88c5ca7e62d3 |      | fa:16:3e:fc:44:6d | {"subnet_id": "6e14be1e-5d51-4291-b3b6-10dfb6d95c42", "ip_address": "10.16.0.152"}    |

#disable security groups:
[root@bios-ohpc ~]# neutron port-update 599c2814-37e4-4085-953e-88c5ca7e62d3 --no-security-groups

#disable port security:
[root@bios-ohpc ~]# neutron port-update 599c2814-37e4-4085-953e-88c5ca7e62d3 --port_security_enabled=FALSE

• Change the network driver on the ipxe image from virtio_net to e1000:

#identify the image:
[root@bios-ohpc ~]# glance image-list
--output ommited--
[root@bios-ohpc ~] glance image-update --property hw_vif_model=e1000 7b220fc9-3ab7-45f5-a6b3-09536eb9a744

• Stateless only for the moment. Make sure you create a VM with at least 8GB of RAM !!!