Changing the novncproxy_base_url from IP to FQDN in Redhat Openstack

Solution Verified - Updated -

Environment

  • Red Hat OpenStack Platform 12
  • Red Hat OpenStack Platform 13

Issue

  • How to change the novnc proxy url from IP to FQDN to access instance console ?

Resolution

Method 1

  • For manual changes, change novncproxy_base_url on compute nodes,

    crudini --set /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf vnc novncproxy_base_url "https://testing.example.com:6080/vnc_auto.html"

crudini --get /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf vnc novncproxy_base_url

  • Restart openstack-nova-compute on compute nodes:

    docker restart nova_compute

Note: The manual changes will get depricated in the next stack update or scale out of the nodes.

Method 2

  • For TripleO/Director environment configuration for making the configuration change persistent,
    In the template file configuration, add the following parameter,

    parameter_defaults:
  ExtraConfig:
    nova::vncproxy::common::vncproxy_host: testing.example.com

  • Then after applying the changes over template,

    (overcloud) [stack@os1-prd-director01 ~]$ sudo docker exec -i nova_vnc_proxy sh -c "egrep -v '^$|^#' /etc/nova/nova.conf | grep novncproxy_base_url"
novncproxy_base_url=http://testing.example.com:6080/vnc_auto.html
(overcloud) [stack@os1-prd-director01 ~]$ openstack console url show test-instance1
+-------+-----------------------------------------------------------------------------------------+
| Field | Value                                                                                   |
+-------+-----------------------------------------------------------------------------------------+
| type  | novnc                                                                                   |
| url   | http://testing.example.com:6080/vnc_auto.html?token=ab54c3cc-45bbc-4578-8efa-d78d2hde22 |
+-------+-----------------------------------------------------------------------------------------+

Note: testing.example.com is the resolvable DNS name and FQDN of novncproxy_base_url

Diagnostic Steps

Note: XX.XX.XX.XX is the VIP of the external network

~~~
(overcloud) [stack@undercloud ~]$ openstack console url show test-instance1
+-------+-------------------------------------------------------------------------------------+
| Field | Value                                                                               |
+-------+-------------------------------------------------------------------------------------+
| type  | novnc                                                                               |
| url   | http://XX.XX.XX.XX:6080/vnc_auto.html?token=b23eacd-78de-4578-8efa-187ec694dbbb     |
+-------+-------------------------------------------------------------------------------------+
~~~

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