kayobe/ansible/overcloud-host-image-workaround-resolv.yml
Mark Goddard 9c1d085d2e Workaround issue in CentOS cloud images with resolv.conf
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.

Fixes: #112
2018-01-16 19:36:36 +00:00

37 lines
1.4 KiB
YAML

---
# 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=installed"'
- 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