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show FQDN first in /etc/hosts (closes: #3521) (#3522)

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The hosts(5) manpage clearly states that the first entry is the
"canonical name", or FQDN (Fully-Qualified Domain Name):

    IP_address canonical_hostname [aliases...]

By using the alias as a first entry, `hostname -f` does not return the
correct domain which breaks all sorts of unrelated functionality (it
has impact over email server configuration, for example).
This commit is contained in:
anarcat 2018-10-16 06:55:55 -04:00 committed by k8s-ci-robot
parent 9b773185c3
commit c33e08c3fa
1 changed files with 1 additions and 1 deletions
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2
roles/kubernetes/preinstall/tasks/0090-etchosts.yml
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@ -3,7 +3,7 @@
blockinfile:
dest: /etc/hosts
block: |-
{% for item in (groups['k8s-cluster'] + groups['etcd'] + groups['calico-rr']|default([]))|unique -%}{{ hostvars[item]['access_ip'] | default(hostvars[item]['ip'] | default(hostvars[item]['ansible_default_ipv4']['address'])) }}{% if (item != hostvars[item]['ansible_hostname']) %} {{ hostvars[item]['ansible_hostname'] }} {{ hostvars[item]['ansible_hostname'] }}.{{ dns_domain }}{% endif %} {{ item }} {{ item }}.{{ dns_domain }}
{% for item in (groups['k8s-cluster'] + groups['etcd'] + groups['calico-rr']|default([]))|unique -%}{{ hostvars[item]['access_ip'] | default(hostvars[item]['ip'] | default(hostvars[item]['ansible_default_ipv4']['address'])) }}{% if (item != hostvars[item]['ansible_hostname']) %} {{ hostvars[item]['ansible_hostname'] }}.{{ dns_domain }} {{ hostvars[item]['ansible_hostname'] }}{% endif %} {{ item }} {{ item }}.{{ dns_domain }}
{% endfor %}
state: present
create: yes