OVN role

This is the description of the role OVN.

• OVN role
  • Variable reference
    • Mandatory variables
    • Optional variables
  • Handlers
  • CLI tools

Variable reference

Mandatory variables

Variable	Description	Type of variable	Example value
ovn_cluster_name	name of the incus cluster. Must be defined in a group_vars and have the same name that this group_var	str	th3_core
ovn_cluster_main_name	ansible_hostname of the central DB main server	str	srv-203
ovn_ip	the ip on which ovn daemons listen on, without CIDR	str	10.24.10.10
ovn_central_servers	list of servers (server name must match their ansible inventory name) hosting the ovn db	list[str]	["srv-382", "srv-383"]
ovn_ic_db_servers	list of servers (server name must match their ansible inventory name) hosting the ovn ic db	list[str]	["srv-382", "srv-383"]

Optional variables

Variable	Description	Type of variable	Default value	Example value
ovn_host	is this host an ovn host	bool	true	false
ovn_ic_name	name of the ovn ic this cluster is a part of	str	None	incus_ic_cluster
ovn_ic_cluster_main_name	ansible_hostname of the OVN IC DB main server	str	None	srv-383
ovn_ic	is this host an ovn ic host	bool	true	false
ovn_ssl	enable SSL connection; has to be set at the cluster level	bool	false	true

Handlers

In this role handlers order is very important, do not change it without reasons.

Ansible doc reminder: Handlers are executed in the order they are defined in the handlers section (https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_handlers.html#notifying-handlers)

CLI tools

ovn-nbctl OVN northbound DB management utility ovn-sbctl OVN southbound DB management utility This cli tools manage only the DB content to manage the DB cluster you have to use ovs-appctl. By exemple for OVN SB DB:

ovs-appctl -t /var/run/ovn/ovnsb_db.ctl list-commands