Networks

The configuration of the individual networks is distributed across all environments and the inventory and is summarized here.

The following networks are used:

Managment / Console

The managment or console network is there to access all nodes via SSH as well as some infrastructure and helper services. It is configured with the console_interface variable in the host inventory:

inventory/host_vars/<hostname>.yml
---
[...]
console_interface: eth0

Internal

The internal network is used for internal communication between different hosts. It is also used for traffic that has no dedicated network.

inventory/host_vars/<hostname>.yml
---
[...]
managment_interface: eth1
internal_address: 10.0.1.2

[...]
##########################
# kolla

network_interface: eth1
environments/kolla/configuration.yml
---
[...]
##########################
# haproxy

kolla_internal_fqdn: internal-api.betacloud.xyz
environments/configuration.yml
---
[...]
##########################
# hosts

host_additional_entries:
  internal-api.betacloud.xyz: 10.0.1.10

[...]
##########################
# kolla

kolla_internal_vip_address: 10.0.1.10

Monitoring

The monitoring network normally falls together with the internal network. Those can be further separated at environments/monitorning/configuration.yml.

inventory/host_vars/<hostname>.yml
---
[...]
fluentd_host: 10.0.1.2

[...]
##########################
# monitoring

prometheus_scaper_interface: eth1

Tunnel

Traffic between guest virtual machines on different compute nodes or between layer 3 networking components such as virtual routers are usually tunneled through VXLAN or GRE tunnels over the tunnel network.

inventory/host_vars/<hostname>.yml
---
[...]
##########################
# kolla

tunnel_interface: eth2

External API

External API endpoints are in this network.

inventory/host_vars/<hostname>.yml
---
[...]
##########################
# kolla

kolla_external_vip_interface: eth3
environments/kolla/configuration.yml
---
[...]
##########################
# haproxy

kolla_external_fqdn: external-api.betacloud.xyz
environments/configuration.yml
---
[...]
##########################
# hosts

host_additional_entries:
  external-api.betacloud.xyz: 10.0.3.10

[...]
##########################
# kolla

kolla_external_vip_address: 10.0.3.10

External

The external network connects virtual machines to the outside.

inventory/host_vars/<hostname>.yml
---
[...]
##########################
# kolla

neutron_external_interface: eth4

Storage Frontend

The storage frontend network is the connection between ceph nodes and all other nodes.

inventory/host_vars/<hostname>.yml
---
[...]
##########################
# kolla

storage_interface: eth5

[...]
##########################
# ceph

monitor_interface: eth5
environments/kolla/configuration.yml
---
[...]
##########################
# external_ceph

ceph_public_network: 10.0.5.0/24
environments/ceph/configuration.yml
---
[...]
##########################
# network

public_network: 10.0.5.0/24
environments/monitoring/configuration.yml
---
[...]
##########################
# exporter

prometheus_exporter_ceph_public_network: 10.0.5.0/24

Storage Backend

The storage backend network is the internal connection between ceph nodes.

environments/ceph/configuration.yml
---
[...]
##########################
# network

cluster_network: 10.0.6.0/24