c12s-kubespray/roles/kubernetes/preinstall/handlers/main.yml
Bogdan Dobrelya a15d626771 Preconfigure DNS stack and docker early
In order to enable offline/intranet installation cases:
* Move DNS/resolvconf configuration to preinstall role. Remove
  skip_dnsmasq_k8s var as not needed anymore.

* Preconfigure DNS stack early, which may be the case when downloading
  artifacts from intranet repositories. Do not configure
  K8s DNS resolvers for hosts /etc/resolv.conf yet early (as they may be
  not existing).

* Reconfigure K8s DNS resolvers for hosts only after kubedns/dnsmasq
  was set up and before K8s apps to be created.

* Move docker install task to early stage as well and unbind it from the
  etcd role's specific install path. Fix external flannel dependency on
  docker role handlers. Also fix the docker restart handlers' steps
  ordering to match the expected sequence (the socket then the service).

* Add default resolver fact, which is
  the cloud provider specific and remove hardcoded GCE resolver.

* Reduce default ndots for hosts /etc/resolv.conf to 2. Multiple search
  domains combined with high ndots values lead to poor performance of
  DNS stack and make ansible workers to fail very often with the
  "Timeout (12s) waiting for privilege escalation prompt:" error.

* Update docs.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
2016-12-09 17:30:55 +01:00

45 lines
1.3 KiB
YAML

- name: Preinstall | restart network
command: /bin/true
notify:
- Preinstall | reload network
- Preinstall | update resolvconf
when: ansible_os_family != "CoreOS"
- name: Preinstall | reload network
service:
name: >-
{% if ansible_os_family == "RedHat" -%}
network
{%- elif ansible_os_family == "Debian" -%}
networking
{%- endif %}
state: restarted
when: ansible_os_family != "RedHat" and ansible_os_family != "CoreOS"
- name: Preinstall | update resolvconf
command: /bin/true
notify:
- Preinstall | reload resolvconf
- Preinstall | reload kubelet
when: ansible_os_family != "CoreOS"
- name: Preinstall | update resolvconf for CoreOS
command: /bin/true
notify:
- Preinstall | apply resolvconf cloud-init
- Preinstall | reload kubelet
when: ansible_os_family == "CoreOS"
- name: Preinstall | reload resolvconf
command: /sbin/resolvconf -u
ignore_errors: true
- name: Preinstall | apply resolvconf cloud-init
command: /usr/bin/coreos-cloudinit --from-file {{ resolveconf_cloud_init_conf }}
when: ansible_os_family == "CoreOS"
- name: Preinstall | reload kubelet
service:
name: kubelet
state: restarted
when: "{{ inventory_hostname in groups['kube-master'] and not dns_early|bool }}"