[Cloud] Openstack - 2. Compute Node

 
1. [Cloud] Openstack - Caracal 구축 개요
2. [Cloud] Openstack - 1-1. Controller Node (Preprocess, Environment, Keystone, Glance)
3. [Cloud] Openstack - 1-2. Controller Node (Placement, Nova, Neutron) 
4. [Cloud] Openstack - 1-3. Controller Node (Cinder, Swift) 
5. [Cloud] Openstack - 1-4. Controller Node (Horizon) 
6. [Cloud] Openstack - 2. Compute Node ←
7. [Cloud] Openstack - 3. Block Node
8. [Cloud] Openstack - 4. Horizon Dashboard Console 개선

Preprocess

---

vi /etc/hosts

127.0.0.1       localhost
#127.0.1.1      compute-virtual-machine

192.168.2.10    controller

192.168.2.20    compute1
192.168.2.10    compute2
192.168.2.30    compute3

192.168.2.30    block
192.168.2.30    swift

Network Setting

- NetworkManager 내리기

sudo /etc/init.d/network-manager stop
sudo update-rc.d -f NetworkManager remove

- netplan 설정

vi /etc/netplan/01-network-manager-all.yaml

# Let NetworkManager manage all devices on this system
network:
  ethernets:
   ens33:
    addresses:
            - 192.168.2.20/24
    nameservers:
            addresses: [8.8.8.8,8.8.4.4]
    routes:
            - to: default
              via: 192.168.2.1
   ens34:
           dhcp4: false
  version: 2

netplan apply

 

Environment

---

 

Environment — Installation Guide documentation

NTP Server

- install chrony

apt install chrony -y

- vi /etc/chrony/chrony.conf

server controller iburst

- Restart the NTP service

service chrony restart

Openstack packages for Ubuntu

- Openstack 2024.1 Caracal for Ubuntu 22.04 LTS

add-apt-repository cloud-archive:caracal

- Client Installation

apt install python3-openstackclient

Nova(Compute)

---

 

Install and configure a compute node for Ubuntu — nova 27.5.2.dev1 documentation

- 하드웨어 가속 확인

egrep -c '(vmx|svm)' /proc/cpuinfo
	0
# vmware machine settings에서 Processors의 Virtualize Inter VT-x/EPT or AMD-V/RVI 설정
egrep -c '(vmx|svm)' /proc/cpuinfo
	8

이 명령어가 하나 이상의 값을 반환하면 Compute 노드가 하드웨어 가속을 지원하므로 일반적으로 추가 구성이 필요하지 않다. 다만 이 명령어가 0의 값을 반환하면 Compute 노드가 하드웨어 가속을 지원하지 않으므로 KVM 대신 QEMU를 사용하도록 libvirt를 구성해야 한다. <공식 문서 Official>

*사실상 대부분의 현대 컴퓨터는 하드웨어 가속을 지원하므로 당연히 0 이상의 값이 반환될거고, 그냥 넘어가도 좋다.

- Install the packages

apt install nova-compute

- vi /etc/nova/nova.conf

[DEFAULT]
#...
transport_url = rabbit://openstack:RABBIT_PASS@controller
my_ip = 192.168.2.20

[api]
#...
auth_strategy = keystone

[keystone_authtoken]
#...
www_authenticate_uri = http://controller:5000/
auth_url = http://controller:5000/
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = nova
password = NOVA_PASS

[service_user]
send_service_user_token = true
auth_url = http://controller:5000
auth_strategy = keystone
auth_type = password
project_domain_name = Default
project_name = service
user_domain_name = Default
username = nova
password = NOVA_PASS

[vnc]
# ...
enabled = true
server_listen = 0.0.0.0
server_proxyclient_address = $my_ip
novncproxy_base_url = http://controller:6080/vnc_auto.html

[glance]
# ...
api_servers = http://controller:9292

[oslo_concurrency]
# ...
lock_path = /var/lib/nova/tmp

[placement]
# ...
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://controller:5000/v3
username = placement
password = PLACEMENT_PASS

- Restart the Compute service

service nova-compute restart

 

Neutron (Network)

---

 

Install and configure compute node — Neutron 23.3.1.dev15 documentation

- Install the components

apt install neutron-openvswitch-agent

- vi /etc/neutron/neutron.conf

[DEFAULT]
# ...
transport_url = rabbit://openstack:RABBIT_PASS@controller
auth_strategy = keystone

[keystone_authtoken]
# ...
www_authenticate_uri = http://controller:5000
auth_url = http://controller:5000
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = neutron
password = NEUTRON_PASS

[oslo_concurrency]
# ...
lock_path = /var/lib/neutron/tmp

Networking Option 2: Self-service networks

Networking Option 2: Self-service networks — Neutron 23.3.1.dev15 documentation

- ovs-vsctl

ovs-vsctl del-br br-int
ovs-vsctl show
ovs-vsctl del-br br-ens34
ovs-vsctl add-br br-ens34
ovs-vsctl add-port br-ens34 ens34

service openvswitch-switch restart

- vi /etc/neutron/plugins/ml2/openvswitch_agent.ini

[agent]
tunnel_types = vxlan
l2_population = true

[ovs]
bridge_mappings = provider:br-ens34
local_ip = 192.168.2.20

[vxlan]
# 안쓸거
#local_ip = OVERLAY_INTERFACE_IP_ADDRESS
#l2_population = true

[securitygroup]
# ...
enable_security_group = true
firewall_driver = openvswitch
#firewall_driver = iptables_hybrid

---

- vi /etc/nova/nova.conf

[neutron]
# ...
auth_url = http://controller:5000
auth_type = password
project_domain_name = Default
user_domain_name = Default
region_name = RegionOne
project_name = service
username = neutron
password = NEUTRON_PASS

- Restart the Compute service & Linux bridge agent

service nova-compute restart
service neutron-openvswitch-agent restart