Deploying a Private Cloud at Home — Part 5

Today’s blog post is part five of seven in a series dedicated to Deploying Private Cloud at Home, where I will be demonstrating how to configure Compute node and OpenStack services on the compute node. We have already installed the MySQL Python library on compute node in previous posts.

1. Install OpenStack compute packages on the node

   yum install -y openstack-nova-compute openstack-utils

2. Configure Nova compute service

   openstack-config --set /etc/nova/nova.conf database connection mysql://nova:Youre_Password@controller/nova
   openstack-config --set /etc/nova/nova.conf DEFAULT auth_strategy keystone
   openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_uri https://controller:5000
   openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_host controller
   openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_protocol http
   openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_port 35357
   openstack-config --set /etc/nova/nova.conf keystone_authtoken admin_user nova
   openstack-config --set /etc/nova/nova.conf keystone_authtoken admin_tenant_name service
   openstack-config --set /etc/nova/nova.conf keystone_authtoken admin_password Your_Password
   openstack-config --set /etc/nova/nova.conf DEFAULT rpc_backend qpid
   openstack-config --set /etc/nova/nova.conf DEFAULT qpid_hostname controller
   openstack-config --set /etc/nova/nova.conf DEFAULT my_ip Your_Compute_node_IP
   openstack-config --set /etc/nova/nova.conf DEFAULT vnc_enabled True
   openstack-config --set /etc/nova/nova.conf DEFAULT vncserver_listen 0.0.0.0
   openstack-config --set /etc/nova/nova.conf DEFAULT vncserver_proxyclient_address Your_Compute_node_IP
   openstack-config --set /etc/nova/nova.conf DEFAULT novncproxy_base_url https://controller:6080/vnc_auto.html
   openstack-config --set /etc/nova/nova.conf DEFAULT glance_host controller

3. Start the Compute service and its dependencies. Configure them to start automatically when the system boots

   service libvirtd start
   service messagebus start
   service openstack-nova-compute start
   chkconfig libvirtd on
   chkconfig messagebus on
   chkconfig openstack-nova-compute on

4. Enable IP forwarding

   perl -pi -e 's,net.ipv4.ip_forward = 0,net.ipv4.ip_forward = 1,' /etc/sysctl.conf
   perl -pi -e 's,net.ipv4.conf.default.rp_filter = 1,net.ipv4.conf.default.rp_filter = 0,' /etc/sysctl.conf
   echo "net.ipv4.conf.all.rp_filter=0" >> /etc/sysctl.conf
   sysctl -p

5. Install legacy networking components and Flat DHCP

   yum install -y openstack-nova-network openstack-nova-api

   We are using legacy networking and single NIC on both controller and compute nodes. Flat and public interfaces will be the same on below configuration. In this case, it is etho replace with the one you have on your system.

   openstack-config --set /etc/nova/nova.conf DEFAULT network_api_class nova.network.api.API
   openstack-config --set /etc/nova/nova.conf DEFAULT security_group_api nova
   openstack-config --set /etc/nova/nova.conf DEFAULT network_manager nova.network.manager.FlatDHCPManager
   openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.libvirt.firewall.IptablesFirewallDriver
   openstack-config --set /etc/nova/nova.conf DEFAULT network_size 254
   openstack-config --set /etc/nova/nova.conf DEFAULT allow_same_net_traffic False
   openstack-config --set /etc/nova/nova.conf DEFAULT multi_host True
   openstack-config --set /etc/nova/nova.conf DEFAULT send_arp_for_ha True
   openstack-config --set /etc/nova/nova.conf DEFAULT share_dhcp_address True
   openstack-config --set /etc/nova/nova.conf DEFAULT force_dhcp_release True
   openstack-config --set /etc/nova/nova.conf DEFAULT flat_network_bridge br0
   openstack-config --set /etc/nova/nova.conf DEFAULT flat_interface eth0
   openstack-config --set /etc/nova/nova.conf DEFAULT public_interface eth0

6. Start the services and configure them to start when the system bootsservice openstack-nova-network start

   service openstack-nova-metadata-api start
   chkconfig openstack-nova-network on
   chkconfig openstack-nova-metadata-api on

7. Restart networking

   service network restart

This completes the configuration of compute node. Stay tuned for part six where we will configure network services on controller node.