OpenStack Epoxy : Add Compute Nodes

Add Compute Nodes to run more instances. Following setting example is only for Nova Compute. However, it also needs Network components for Compute Nodes, refer to follows for it. ⇒ Neutron with ML2 or Neutron with OVN This example is based on the environment like follows. ------------+--------------------------+------------ | | eth0|10.0.0.30 eth0|10.0.0.51 +-----------+-----------+ +-----------+-----------+ | [ dlp.srv.world ] | | [ node01.srv.world ] | | (Control Node) | | (Compute Node) | | | | | | MariaDB RabbitMQ | | Libvirt | | Memcached Nginx | | Nova Compute | | Keystone httpd | | | | Glance Nova API | | | +-----------------------+ +-----------------------+

[1]	Install KVM Hypervisor on Compute Node, refer to here. It's unnecessary to set Bridge networking on the section [2] of the link.
[2]	Install Nova-Compute.

root@node01:~#  apt -y install nova-compute nova-compute-kvm qemu-system-data

[3]	Configure Nova.

root@node01:~#  mv /etc/nova/nova.conf /etc/nova/nova.conf.org root@node01:~#  vi /etc/nova/nova.conf # create new [DEFAULT] state_path = /var/lib/nova enabled_apis = osapi_compute,metadata log_dir = /var/log/nova # RabbitMQ connection info transport_url = rabbit://openstack:password@dlp.srv.world:5672 [api] auth_strategy = keystone [vnc] enabled = True # IP address compute instances listen # specify this node's IP server_listen = 10.0.0.51 server_proxyclient_address = 10.0.0.51 novncproxy_base_url = https://dlp.srv.world:6080/vnc_auto.html # Glance connection info [glance] api_servers = https://dlp.srv.world:9292 [oslo_concurrency] lock_path = $state_path/tmp # Keystone auth info [keystone_authtoken] www_authenticate_uri = https://dlp.srv.world:5000 auth_url = https://dlp.srv.world:5000 memcached_servers = dlp.srv.world:11211 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = nova password = servicepassword # if using self-signed certs on Apache2 Keystone, turn to [true] insecure = false [placement] auth_url = https://dlp.srv.world:5000 os_region_name = RegionOne auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = placement password = servicepassword # if using self-signed certs on Apache2 Keystone, turn to [true] insecure = false [wsgi] api_paste_config = /etc/nova/api-paste.ini [oslo_policy] enforce_new_defaults = true root@node01:~#  chmod 640 /etc/nova/nova.conf root@node01:~#  chgrp nova /etc/nova/nova.conf root@node01:~#  systemctl restart nova-compute

[4]	Confirm the status of Nova services on Control Node. If all State is [up], they are running normally.

# discover Compute Nodes root@dlp ~(keystone)#  su -s /bin/bash nova -c "nova-manage cell_v2 discover_hosts" root@dlp ~(keystone)#  openstack compute service list +--------------------------+----------------+------------------+----------+---------+-------+--------------------------+ | ID | Binary | Host | Zone | Status | State | Updated At | +--------------------------+----------------+------------------+----------+---------+-------+--------------------------+ | 2ac6894c-fa22-4bd6-ab26- | nova-scheduler | dlp.srv.world | internal | enabled | up | 2025-08- | | 3de55ae42f22 | | | | | | 28T01:05:24.000000 | | 326f387a-2680-4428-b86c- | nova-conductor | dlp.srv.world | internal | enabled | up | 2025-08- | | 10bdbc82a668 | | | | | | 28T01:05:26.000000 | | 42a005ab-ae9a-4336-bb11- | nova-compute | dlp.srv.world | nova | enabled | up | 2025-08- | | 93b7c091f4f4 | | | | | | 28T01:05:31.000000 | | dc4529cb-938d-462e-bbc7- | nova-compute | node01.srv.world | nova | enabled | up | 2025-08- | | afa7ba472ee5 | | | | | | 28T01:05:24.000000 | +--------------------------+----------------+------------------+----------+---------+-------+--------------------------+

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