Bug 1792422

Description of problem:

According to the documentation, we are supposed to update the /etc/hosts file with the FQDN and Short Name of the Director host and configure it to point to the Public API IP address (undercloud_public_host):

https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.0-beta/html/director_installation_and_usage/preparing-for-director-installation#preparing-the-undercloud

3.1, Step 8.

My /etc/hosts prior to deployment:

[stack@director16 ~]$ cat/etc/hosts
172.16.220.25 director16.homelab.net director16
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
[stack@director16 ~]$

Here's the undercloud.conf file used for deployment:

[stack@director16 ~]$ egrep -v '(^$|^#)' undercloud.conf 
[DEFAULT]
certificate_generation_ca = local
container_images_file = /home/stack/templates/containers-prepare-parameter.yaml
enabled_hardware_types = ipmi,redfish,ilo,idrac,staging-ovirt
generate_service_certificate = true
local_interface = ens7
local_ip = 192.168.200.5/24
local_mtu = 1500
overcloud_domain_name = homelab.net
undercloud_admin_host = 192.168.200.6
undercloud_debug = false
undercloud_hostname = director16.homelab.net
undercloud_nameservers = 172.16.225.254
undercloud_public_host = 172.16.220.25
[ctlplane-subnet]
cidr = 192.168.200.0/24
dhcp_end = 192.168.200.200
dhcp_start = 192.168.200.100
gateway = 192.168.200.5
inspection_iprange = 192.168.200.20,192.168.200.99
masquerade = true
[stack@director16 ~]$ 

During deployment, the /etc/hosts file is updated as such:

[stack@director16 ~]$ cat/etc/hosts
172.16.220.25 director16.homelab.net director16
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
# BEGIN ANSIBLE MANAGED BLOCK




192.168.200.5 director16.homelab.net director16
192.168.200.5 director16.external.homelab.net director16.external
192.168.200.5 director16.ctlplane.homelab.net director16.ctlplane


# END ANSIBLE MANAGED BLOCK
[stack@director16 ~]$

This is causing rabbitmq container startup to fail when it attempts to resolves the listen host/port:

+ echo 'Running command: '\''/usr/lib/rabbitmq/bin/rabbitmq-server'\'''
Running command: '/usr/lib/rabbitmq/bin/rabbitmq-server'
+ exec /usr/lib/rabbitmq/bin/rabbitmq-server
ERROR: epmd error for host director16: address (cannot connect to host/port)
+ sudo -E kolla_set_configs

If the documentation is correct, RabbitMQ should be using the "director16.ctlplane" to bind to instead of "director16". I think this is the actual issue as Rabbit shouldn't be exposed to the Public API.

I removed the line for the Public API (undercloud_public_host) entry that I configured prior to deployment and re-ran the Director install and it completed successfully which leads me to believe that is the case.


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