separate the dhcp_agents_per_network and enable_neutron_agent_ha parameters

[Yusuf Güngör]

Hi everyone,

./ansible/roles/neutron/templates/neutron.conf.j2 file contains these parameters like:

{% if enable_neutron_agent_ha | bool %}
dhcp_agents_per_network = {{ dhcp_agents_per_network }}
l3_ha = true
max_l3_agents_per_router = {{ max_l3_agents_per_router }}
{% endif %}

But we do not need to set l3_ha=True to use dhcp_agents_per_network parameter.

Can we seperate these parameters? It is enough to move the "dhcp_agents_per_network" config to out of the if block.

What happened: dhcp_agents_per_network config parameter is not added to neutron.conf if enable_neutron_agent_ha is not set to True

What you expected to happen: dhcp_agents_per_network config parameter should be added to neutron.conf regardless of enable_neutron_agent_ha value.

How to reproduce it (minimal and precise): Set the enable_neutron_agent_ha:False and dhcp_agents_per_network:2. Check the neutron.conf after reconfigure.

**Environment**:
* Kolla-Ansible version: wallaby, xena, yoga, zed

[Michal Nasiadka (mnasiadka)]

Why do you think it should be added regardless of enable_neutron_agent_ha? Isn't that DHCP agent HA?

[Yusuf Güngör (yusuf2)]

Hi Michal, thanks for your reply.

According to the neutron config reference doc, l3_ha and max_l3_agents_per_router is router HA related config variables. But dhcp_agents_per_network is only related to dhcp agent HA.

l3_ha : https://docs.openstack.org/neutron/latest/configuration/neutron.html#DEFAULT.l3_ha

dhcp_agents_per_network: https://docs.openstack.org/neutron/latest/configuration/neutron.html#DEFAULT.dhcp_agents_per_network

max_l3_agents_per_router : https://docs.openstack.org/neutron/latest/configuration/neutron.html#DEFAULT.max_l3_agents_per_router

According to the RedHat docs when using DVR l3_ha is not supported: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.0/html/networking_guide/sec-dvr#:~:text=DVR%20is%20not,a%20different%20node.

Our setup is dvr and we want to use the dhcp agent HA but could not use l3_ha. We have to override the l3_ha=False

[Launchpad Janitor (janitor)]

[Expired for kolla-ansible because there has been no activity for 60 days.]

[Mesut Muhammet Şahin (messah)]

Hi,

Is there any updates?