---
# The CentOS cloud images from 7.2 (1511) onwards have a bogus name server
# entry in /etc/resolv.conf, 10.0.2.3. Cloud-init only appends name server
# entries to this file, and will not remove this bogus entry. Typically this
# leads to a delay of around 30 seconds when connecting via SSH, due to a
# timeout in NSS. The workaround employed here is to remove this bogus entry
# from the image using virt-customize, if it exists. See
# https://bugs.centos.org/view.php?id=14369.

- name: Ensure the overcloud host image has bogus name server entries removed
  hosts: seed
  tags:
    - overcloud-host-image-workaround
  tasks:
    - block:
        - name: Ensure libguestfs-tools is installed
          command: >
            docker exec bifrost_deploy
            bash -c '
            ansible localhost
            --connection local
            --become
            -m yum
            -a "name=libguestfs-tools state=present"'

        - name: Ensure the overcloud host image has bogus name server entries removed
          command: >
            docker exec bifrost_deploy
            bash -c '
            export LIBGUESTFS_BACKEND=direct &&
            ansible localhost
            --connection local
            --become
            -m command
            -a "virt-customize -a /httpboot/deployment_image.qcow2 --edit \"/etc/resolv.conf:s/^nameserver 10\.0\.2\.3\$//\""'
      when: overcloud_host_image_workaround_resolv_enabled | bool