HPCoD: Making OpenHPC work

Make OpenHPC work within Openstack

• Change the MTU of the internal network to 9000. 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 !!!