openstack/kolla-ansible
Code Issues Proposed changes

keepalived: ability to use unicast instead of multicast

Browse Source 
In some data centers multicast traffic is prohibited. Additionally
VRRP id needs to be unique within broadcast domain when keepalived
operates in multicast mode, otherwise it fails to start.

However keepalived can be configured to use unicast traffic [1].
In unicast mode VRRP id doesn't make sense, but needs to be
the same among peers.

[1] http://manpages.ubuntu.com/manpages/zesty/man5/keepalived.conf.5.html

Change-Id: I692ecbb0aa750baf20c013b53b57f88b474b63cc
Signed-off-by: Pavel Glushchak <pglushchak@virtuozzo.com>
This commit is contained in:
Pavel Glushchak 2017-12-18 18:17:51 +03:00 committed by Pavel Gluschak (scsnow)
parent 378b8dd932
commit 6832e0aad1
2 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
ansible/roles/haproxy/defaults/main.yml
View File

@ -44,3 +44,6 @@ haproxy_glance_api_server_timeout: "6h"
syslog_server: "{{ api_interface_address }}"
syslog_haproxy_facility: "local1"
# Traffic mode. Valid options are [ multicast, unicast ]
keepalived_traffic_mode: "multicast"

15
ansible/roles/haproxy/templates/keepalived.conf.j2
View File

@ -12,8 +12,21 @@ vrrp_instance kolla_internal_vip_{{ keepalived_virtual_router_id }} {
virtual_router_id {{ keepalived_virtual_router_id }}
priority {{ groups['haproxy'].index(inventory_hostname) + 1 }}
advert_int 1
{% if keepalived_traffic_mode == 'unicast' %}
unicast_src_ip {{ api_interface_address }}
{% if groups['haproxy'] | length > 1 %}
unicast_peer {
{% for host in groups['haproxy'] %}
{% set ip_addr = hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] %}
{% if ip_addr != api_interface_address %}
{{ ip_addr }}
{% endif %}
{% endfor %}
}
{% endif %}
{% endif %}
virtual_ipaddress {
{{ kolla_internal_vip_address }} dev {{ api_interface }}
{{ kolla_internal_vip_address }} dev {{ api_interface }}
{% if haproxy_enable_external_vip | bool %}
{{ kolla_external_vip_address }} dev {{ kolla_external_vip_interface }}
{% endif %}