OpenStack Caracal : Neutron Network (VXLAN)2024/05/21 |
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Configure virtual networking by OpenStack Network Service (Neutron).
For example, configure VXLAN type of networking on here.
Furthermore, this example is based on the environment that Network Node and Compute Node have 2 network interfaces.
------------+--------------------------+--------------------------+------------
| | |
eth0|10.0.0.30 eth0|10.0.0.50 eth0|10.0.0.51
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [ dlp.srv.world ] | | [ network.srv.world ] | | [ node01.srv.world ] |
| (Control Node) | | (Network Node) | | (Compute Node) |
| | | | | |
| MariaDB RabbitMQ | | Neutron L2/L3 Agent | | Libvirt |
| Memcached Nginx | | Neutron Metadata | | Nova Compute |
| Keystone httpd | | Open vSwitch | | Neutron L2 Agent |
| Glance Nova API | | | | Open vSwitch |
| Neutron Server | | | | |
| Neutron Metadata | | | | |
+-----------------------+ +-----------+-----------+ +-----------------------+
eth1|(UP with no IP)
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| [1] | Change settings on Control Node. |
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root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # line 158 : add a value to [tenant_network_types] tenant_network_types = vxlan
# line 219 : add [ml2_type_flat]
flat_networks = physnet1
# line 275 : add [ml2_type_vxlan]
vni_ranges = 1:1000
systemctl restart neutron-server |
| [2] | Change settings on Network Node. |
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# add bridge root@network:~# ovs-vsctl add-br br-eth1
# add [eth1] to the port of the bridge above # replace the interface name [eth1] to your own environment root@network:~# ovs-vsctl add-port br-eth1 eth1
root@network:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # line 158 : add a value to [tenant_network_type] tenant_network_types = vxlan
# line 219 : add [ml2_type_flat]
flat_networks = physnet1
# line 275 : add [ml2_type_vxlan]
vni_ranges = 1:1000
root@network:~#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # line 164 : add [agent]
tunnel_types = vxlan
prevent_arp_spoofing = True # line 303 : add [ovs]
local_ip = 10.0.0.50
bridge_mappings = physnet1:br-eth1
root@network:~#
vi /etc/neutron/dhcp_agent.ini # line 77 : add
dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf
root@network:~#
vi /etc/neutron/dnsmasq-neutron.conf # create new
dhcp-option-force=26,1450
systemctl restart neutron-l3-agent neutron-dhcp-agent neutron-metadata-agent neutron-openvswitch-agent |
| [3] | Change settings on Compute Node. |
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root@node01:~#
vi /etc/neutron/plugins/ml2/ml2_conf.ini # line 158 : add a value to [tenant_network_types] tenant_network_types = vxlan
# line 219 : add [ml2_type_flat]
flat_networks = physnet1
# line 275 : add [ml2_type_vxlan]
vni_ranges = 1:1000
root@node01:~#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini # line 164 : add [agent]
tunnel_types = vxlan
prevent_arp_spoofing = True # line 303 : specify IP address of this host [ovs]
local_ip = 10.0.0.51
systemctl restart neutron-openvswitch-agent |
| [4] | Create a Virtual router. It's OK to work on any node. (example below is on Control Node) |
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root@dlp ~(keystone)# openstack router create router01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2024-05-21T07:07:56Z | | description | | | distributed | False | | enable_ndp_proxy | None | | external_gateway_info | null | | flavor_id | None | | ha | False | | id | 5ff94d09-c237-4531-a3d9-3cfcee165e7c | | name | router01 | | project_id | 9c5145f76fd84324bdd2b1b61658a282 | | revision_number | 1 | | routes | | | status | ACTIVE | | tags | | | tenant_id | 9c5145f76fd84324bdd2b1b61658a282 | | updated_at | 2024-05-21T07:07:56Z | +-------------------------+--------------------------------------+ |
| [5] | Create internal network and associate with the router above. |
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# create internal network root@dlp ~(keystone)# openstack network create private --provider-network-type vxlan +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2024-05-21T07:08:24Z | | description | | | dns_domain | None | | id | 78a330d7-074f-491d-a820-2b5e87f5602f | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | False | | is_vlan_transparent | None | | mtu | 1450 | | name | private | | port_security_enabled | True | | project_id | 9c5145f76fd84324bdd2b1b61658a282 | | provider:network_type | vxlan | | provider:physical_network | None | | provider:segmentation_id | 312 | | qos_policy_id | None | | revision_number | 1 | | router:external | Internal | | segments | None | | shared | False | | status | ACTIVE | | subnets | | | tags | | | tenant_id | 9c5145f76fd84324bdd2b1b61658a282 | | updated_at | 2024-05-21T07:08:24Z | +---------------------------+--------------------------------------+ # create subnet for internal network root@dlp ~(keystone)# openstack subnet create private-subnet --network private \ --subnet-range 192.168.100.0/24 --gateway 192.168.100.1 \ --dns-nameserver 10.0.0.10 +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | allocation_pools | 192.168.100.2-192.168.100.254 | | cidr | 192.168.100.0/24 | | created_at | 2024-05-21T07:08:56Z | | description | | | dns_nameservers | 10.0.0.10 | | dns_publish_fixed_ip | None | | enable_dhcp | True | | gateway_ip | 192.168.100.1 | | host_routes | | | id | 5ac5f7dc-c275-48a1-aaac-745dd2f61ea7 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | private-subnet | | network_id | 78a330d7-074f-491d-a820-2b5e87f5602f | | project_id | 9c5145f76fd84324bdd2b1b61658a282 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2024-05-21T07:08:56Z | +----------------------+--------------------------------------+ # set subnet to the router above root@dlp ~(keystone)# openstack router add subnet router01 private-subnet
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| [6] | Create external network and associate with the router above. |
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# create external network root@dlp ~(keystone)# openstack network create \ --provider-physical-network physnet1 \ --provider-network-type flat --external public +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | | | created_at | 2024-05-21T07:09:34Z | | description | | | dns_domain | None | | id | 5e99fe3a-c28a-47b3-ae5f-504fa513709b | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | False | | is_vlan_transparent | None | | mtu | 1500 | | name | public | | port_security_enabled | True | | project_id | 9c5145f76fd84324bdd2b1b61658a282 | | provider:network_type | flat | | provider:physical_network | physnet1 | | provider:segmentation_id | None | | qos_policy_id | None | | revision_number | 1 | | router:external | External | | segments | None | | shared | False | | status | ACTIVE | | subnets | | | tags | | | tenant_id | 9c5145f76fd84324bdd2b1b61658a282 | | updated_at | 2024-05-21T07:09:34Z | +---------------------------+--------------------------------------+ # create subnet for external network root@dlp ~(keystone)# openstack subnet create public-subnet \ --network public --subnet-range 10.0.0.0/24 \ --allocation-pool start=10.0.0.200,end=10.0.0.254 \ --gateway 10.0.0.1 --dns-nameserver 10.0.0.10 --no-dhcp +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | allocation_pools | 10.0.0.200-10.0.0.254 | | cidr | 10.0.0.0/24 | | created_at | 2024-05-21T07:10:05Z | | description | | | dns_nameservers | 10.0.0.10 | | dns_publish_fixed_ip | None | | enable_dhcp | False | | gateway_ip | 10.0.0.1 | | host_routes | | | id | 5f767674-473e-402c-ba60-cc6d6b9e5513 | | ip_version | 4 | | ipv6_address_mode | None | | ipv6_ra_mode | None | | name | public-subnet | | network_id | 5e99fe3a-c28a-47b3-ae5f-504fa513709b | | project_id | 9c5145f76fd84324bdd2b1b61658a282 | | revision_number | 0 | | segment_id | None | | service_types | | | subnetpool_id | None | | tags | | | updated_at | 2024-05-21T07:10:05Z | +----------------------+--------------------------------------+ # set gateway to the router above root@dlp ~(keystone)# openstack router set router01 --external-gateway public |
| [7] | By default, it's possible to access for all projects to external network, but for internal network, only admin projects can access to it, so grant access permission for internal network to a project you'd like to let users in the project use. |
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# show network RBAC list root@dlp ~(keystone)# openstack network rbac list +-------------------------------+-------------+--------------------------------+ | ID | Object Type | Object ID | +-------------------------------+-------------+--------------------------------+ | e2cee11d-3ec3-44cb-b7b5- | network | 5e99fe3a-c28a-47b3-ae5f- | | 310c8d17b6a9 | | 504fa513709b | +-------------------------------+-------------+--------------------------------+ # RBAC details # all projects can access only to [access_as_external] root@dlp ~(keystone)# openstack network rbac show e2cee11d-3ec3-44cb-b7b5-310c8d17b6a9 +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | action | access_as_external | | id | e2cee11d-3ec3-44cb-b7b5-310c8d17b6a9 | | object_id | 5e99fe3a-c28a-47b3-ae5f-504fa513709b | | object_type | network | | project_id | 9c5145f76fd84324bdd2b1b61658a282 | | target_project_id | * | +-------------------+--------------------------------------+ # show network list root@dlp ~(keystone)# openstack network list +---------------------------------+---------+----------------------------------+ | ID | Name | Subnets | +---------------------------------+---------+----------------------------------+ | 5e99fe3a-c28a-47b3-ae5f- | public | 5f767674-473e-402c-ba60- | | 504fa513709b | | cc6d6b9e5513 | | 78a330d7-074f-491d-a820- | private | 5ac5f7dc-c275-48a1-aaac- | | 2b5e87f5602f | | 745dd2f61ea7 | +---------------------------------+---------+----------------------------------+ # show project list root@dlp ~(keystone)# openstack project list +----------------------------------+-----------+ | ID | Name | +----------------------------------+-----------+ | 18ede7365bdc430093e8fd4a90f77369 | hiroshima | | 9c5145f76fd84324bdd2b1b61658a282 | admin | | ab9749e59bdb48e4807a18abb83c9f99 | service | +----------------------------------+-----------+ # grant [access_as_shared] permission for [private] to [hiroshima] project root@dlp ~(keystone)# netID=$(openstack network list | grep private | awk '{ print $2 }') root@dlp ~(keystone)# prjID=$(openstack project list | grep hiroshima | awk '{ print $2 }') root@dlp ~(keystone)# openstack network rbac create --target-project $prjID --type network --action access_as_shared $netID +-------------------+--------------------------------------+ | Field | Value | +-------------------+--------------------------------------+ | action | access_as_shared | | id | 9b43f5fb-8591-4758-9499-90b357d9366d | | object_id | 78a330d7-074f-491d-a820-2b5e87f5602f | | object_type | network | | project_id | 9c5145f76fd84324bdd2b1b61658a282 | | target_project_id | 18ede7365bdc430093e8fd4a90f77369 | +-------------------+--------------------------------------+ |
| [8] | Login with a user who is in the project you granted access permission to internal network and Create and boot an instance. |
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# confirm available [flavor] list ubuntu@dlp ~(keystone)$ openstack flavor list +----+-----------+------+------+-----------+-------+-----------+ | ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public | +----+-----------+------+------+-----------+-------+-----------+ | 1 | m1.tiny | 2048 | 10 | 0 | 1 | True | | 2 | m1.small | 4096 | 10 | 0 | 2 | True | | 3 | m1.medium | 8192 | 10 | 0 | 4 | True | | 4 | m2.medium | 8192 | 10 | 10 | 4 | True | +----+-----------+------+------+-----------+-------+-----------+ # confirm available image list ubuntu@dlp ~(keystone)$ openstack image list +--------------------------------------+------------+--------+ | ID | Name | Status | +--------------------------------------+------------+--------+ | 7620a182-99f2-4132-9c6e-4b2da962b241 | Ubuntu2404 | active | +--------------------------------------+------------+--------+ # confirm available network list ubuntu@dlp ~(keystone)$ openstack network list +---------------------------------+---------+----------------------------------+ | ID | Name | Subnets | +---------------------------------+---------+----------------------------------+ | 5e99fe3a-c28a-47b3-ae5f- | public | 5f767674-473e-402c-ba60- | | 504fa513709b | | cc6d6b9e5513 | | 78a330d7-074f-491d-a820- | private | 5ac5f7dc-c275-48a1-aaac- | | 2b5e87f5602f | | 745dd2f61ea7 | +---------------------------------+---------+----------------------------------+ # create a security group for instances ubuntu@dlp ~(keystone)$ openstack security group create secgroup01 +-----------------+------------------------------------------------------------+ | Field | Value | +-----------------+------------------------------------------------------------+ | created_at | 2024-05-21T06:51:23Z | | description | secgroup01 | | id | a7489a36-5a3c-47a6-9d97-7e09d2707004 | | name | secgroup01 | | project_id | 18ede7365bdc430093e8fd4a90f77369 | | revision_number | 1 | | rules | created_at='2024-05-21T06:51:23Z', direction='egress', | | | ethertype='IPv6', | | | id='43129404-8e03-4b29-a19e-d438cc9bca67', | | | standard_attr_id='20', updated_at='2024-05-21T06:51:23Z' | | | created_at='2024-05-21T06:51:23Z', direction='egress', | | | ethertype='IPv4', | | | id='8088bea8-9608-4264-971e-d8398ffe0863', | | | standard_attr_id='21', updated_at='2024-05-21T06:51:23Z' | | shared | False | | stateful | True | | tags | [] | | updated_at | 2024-05-21T06:51:23Z | +-----------------+------------------------------------------------------------+ # create an SSH keypair for connecting to instances ubuntu@dlp ~(keystone)$ ssh-keygen -q -N "" Enter file in which to save the key (/home/ubuntu/.ssh/id_ed25519): # add public-key ubuntu@dlp ~(keystone)$ openstack keypair create --public-key ~/.ssh/id_ed25519.pub mykey +-------------+-------------------------------------------------+ | Field | Value | +-------------+-------------------------------------------------+ | created_at | None | | fingerprint | 09:d5:f0:34:e3:d0:90:c2:28:74:98:01:1f:ea:76:cc | | id | mykey | | is_deleted | None | | name | mykey | | type | ssh | | user_id | b9371d015e0d43dca74f29161448ffd2 | +-------------+-------------------------------------------------+ubuntu@dlp ~(keystone)$ netID=$(openstack network list | grep private | awk '{ print $2 }')
ubuntu@dlp ~(keystone)$
ubuntu@dlp ~(keystone)$ openstack server create --flavor m1.small --image Ubuntu2404 --security-group secgroup01 --nic net-id=$netID --key-name mykey Ubuntu-2404
openstack server list +--------------+-------------+--------+---------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------+-------------+--------+---------------+------------+----------+ | 7fbc24c1- | Ubuntu-2404 | ACTIVE | private=192.1 | Ubuntu2404 | m1.small | | c0d1-43d6- | | | 68.100.130 | | | | 87aa- | | | | | | | 68df83597b57 | | | | | | +--------------+-------------+--------+---------------+------------+----------+ |
| [9] | Assign floating IP address to the Instance above. |
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ubuntu@dlp ~(keystone)$ openstack floating ip create public +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2024-05-21T07:17:06Z | | description | | | dns_domain | None | | dns_name | None | | fixed_ip_address | None | | floating_ip_address | 10.0.0.208 | | floating_network_id | 5e99fe3a-c28a-47b3-ae5f-504fa513709b | | id | 6c42741b-73d3-4b98-abd9-f93450d8ccd7 | | name | 10.0.0.208 | | port_details | None | | port_id | None | | project_id | 18ede7365bdc430093e8fd4a90f77369 | | qos_policy_id | None | | revision_number | 0 | | router_id | None | | status | DOWN | | subnet_id | None | | tags | [] | | updated_at | 2024-05-21T07:17:06Z | +---------------------+--------------------------------------+
ubuntu@dlp ~(keystone)$
openstack server add floating ip Ubuntu-2404 10.0.0.208
# confirm settings ubuntu@dlp ~(keystone)$ openstack floating ip show 10.0.0.208 +---------------------+--------------------------------------------------------+ | Field | Value | +---------------------+--------------------------------------------------------+ | created_at | 2024-05-21T07:17:06Z | | description | | | dns_domain | None | | dns_name | None | | fixed_ip_address | 192.168.100.130 | | floating_ip_address | 10.0.0.208 | | floating_network_id | 5e99fe3a-c28a-47b3-ae5f-504fa513709b | | id | 6c42741b-73d3-4b98-abd9-f93450d8ccd7 | | name | 10.0.0.208 | | port_details | admin_state_up='True', | | | device_id='7fbc24c1-c0d1-43d6-87aa-68df83597b57', | | | device_owner='compute:nova', | | | mac_address='fa:16:3e:f6:d6:dc', name='', | | | network_id='78a330d7-074f-491d-a820-2b5e87f5602f', | | | status='ACTIVE' | | port_id | e810be8a-4589-442b-83e3-7f0cd184cca7 | | project_id | 18ede7365bdc430093e8fd4a90f77369 | | qos_policy_id | None | | revision_number | 2 | | router_id | 5ff94d09-c237-4531-a3d9-3cfcee165e7c | | status | ACTIVE | | subnet_id | None | | tags | [] | | updated_at | 2024-05-21T07:18:10Z | +---------------------+--------------------------------------------------------+ubuntu@dlp ~(keystone)$ openstack server list +--------------+-------------+--------+---------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------+-------------+--------+---------------+------------+----------+ | 7fbc24c1- | Ubuntu-2404 | ACTIVE | private=10.0. | Ubuntu2404 | m1.small | | c0d1-43d6- | | | 0.208, 192.16 | | | | 87aa- | | | 8.100.130 | | | | 68df83597b57 | | | | | | +--------------+-------------+--------+---------------+------------+----------+ |
| [10] | Configure security settings for the security group you created above to access with SSH and ICMP. |
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# permit ICMP ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol icmp --ingress secgroup01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | belongs_to_default_sg | False | | created_at | 2024-05-21T06:55:08Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | c2495ff4-cae1-4390-b555-6ba79e1ba778 | | name | None | | normalized_cidr | 0.0.0.0/0 | | port_range_max | None | | port_range_min | None | | project_id | 18ede7365bdc430093e8fd4a90f77369 | | protocol | icmp | | remote_address_group_id | None | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | a7489a36-5a3c-47a6-9d97-7e09d2707004 | | tags | [] | | updated_at | 2024-05-21T06:55:08Z | +-------------------------+--------------------------------------+ # permit SSH ubuntu@dlp ~(keystone)$ openstack security group rule create --protocol tcp --dst-port 22:22 secgroup01 +-------------------------+--------------------------------------+ | Field | Value | +-------------------------+--------------------------------------+ | belongs_to_default_sg | False | | created_at | 2024-05-21T06:55:35Z | | description | | | direction | ingress | | ether_type | IPv4 | | id | 2a54b381-dd4e-4f53-a843-1ae6699e653c | | name | None | | normalized_cidr | 0.0.0.0/0 | | port_range_max | 22 | | port_range_min | 22 | | project_id | 18ede7365bdc430093e8fd4a90f77369 | | protocol | tcp | | remote_address_group_id | None | | remote_group_id | None | | remote_ip_prefix | 0.0.0.0/0 | | revision_number | 0 | | security_group_id | a7489a36-5a3c-47a6-9d97-7e09d2707004 | | tags | [] | | updated_at | 2024-05-21T06:55:35Z | +-------------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack security group rule list secgroup01 +----------+-------------+-----------+----------+------------+-----------+-----------------------+----------------------+ | ID | IP Protocol | Ethertype | IP Range | Port Range | Direction | Remote Security Group | Remote Address Group | +----------+-------------+-----------+----------+------------+-----------+-----------------------+----------------------+ | 2a54b381 | tcp | IPv4 | 0.0.0.0/ | 22:22 | ingress | None | None | | -dd4e- | | | 0 | | | | | | 4f53- | | | | | | | | | a843- | | | | | | | | | 1ae6699e | | | | | | | | | 653c | | | | | | | | | 43129404 | None | IPv6 | ::/0 | | egress | None | None | | -8e03- | | | | | | | | | 4b29- | | | | | | | | | a19e- | | | | | | | | | d438cc9b | | | | | | | | | ca67 | | | | | | | | | 8088bea8 | None | IPv4 | 0.0.0.0/ | | egress | None | None | | -9608- | | | 0 | | | | | | 4264- | | | | | | | | | 971e- | | | | | | | | | d8398ffe | | | | | | | | | 0863 | | | | | | | | | c2495ff4 | icmp | IPv4 | 0.0.0.0/ | | ingress | None | None | | -cae1- | | | 0 | | | | | | 4390- | | | | | | | | | b555- | | | | | | | | | 6ba79e1b | | | | | | | | | a778 | | | | | | | | +----------+-------------+-----------+----------+------------+-----------+-----------------------+----------------------+ |
| [11] | It's possible to login to the Instance to connect to the floating IP address with SSH like follows. |
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ubuntu@dlp ~(keystone)$ openstack server list +--------------+-------------+--------+---------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------+-------------+--------+---------------+------------+----------+ | 7fbc24c1- | Ubuntu-2404 | ACTIVE | private=10.0. | Ubuntu2404 | m1.small | | c0d1-43d6- | | | 0.208, 192.16 | | | | 87aa- | | | 8.100.130 | | | | 68df83597b57 | | | | | | +--------------+-------------+--------+---------------+------------+----------+ubuntu@dlp ~(keystone)$ ssh ubuntu@10.0.0.208 The authenticity of host '10.0.0.208 (10.0.0.208)' can't be established. ED25519 key fingerprint is SHA256:k8VtMRiVFJvM0n7pviQSwwNWbIDztJuMkRtRw/T1B5E. This key is not known by any other names. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '10.0.0.208' (ED25519) to the list of known hosts. Welcome to Ubuntu 24.04 LTS (GNU/Linux 6.8.0-31-generic x86_64) ..... ..... To run a command as administrator (user "root"), use "sudo <command>". See "man sudo_root" for details. ubuntu@ubuntu-2404:~$ # logined |
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