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Update nodes in etc hosts after cluster scale (#9837)

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This commit is contained in:
Jack
2023-03-07 08:18:18 +08:00
committed by GitHub
parent dba29db58d
commit 9c41769dab
3 changed files with 60 additions and 53 deletions
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2
roles/kubernetes/preinstall/defaults/main.yml
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@@ -38,6 +38,8 @@ resolveconf_cloud_init_conf: /etc/resolveconf_cloud_init.conf
populate_inventory_to_hosts_file: true populate_inventory_to_hosts_file: true
# K8S Api FQDN will be written into /etc/hosts file. # K8S Api FQDN will be written into /etc/hosts file.
populate_loadbalancer_apiserver_to_hosts_file: true populate_loadbalancer_apiserver_to_hosts_file: true
# etc_hosts_localhost_entries will be written into /etc/hosts file.
populate_localhost_entries_to_hosts_file: true
sysctl_file_path: "/etc/sysctl.d/99-sysctl.conf" sysctl_file_path: "/etc/sysctl.d/99-sysctl.conf"

19
roles/kubernetes/preinstall/tasks/0090-etchosts.yml
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@@ -1,5 +1,7 @@
--- ---
- name: Hosts | create list from inventory - name: Hosts | update inventory in hosts file
block:
- name: Hosts | create list from inventory
set_fact: set_fact:
etc_hosts_inventory_block: |- etc_hosts_inventory_block: |-
{% for item in (groups['k8s_cluster'] + groups['etcd']|default([]) + groups['calico_rr']|default([]))|unique -%} {% for item in (groups['k8s_cluster'] + groups['etcd']|default([]) + groups['calico_rr']|default([]))|unique -%}
@@ -14,7 +16,7 @@
delegate_facts: yes delegate_facts: yes
run_once: yes run_once: yes
- name: Hosts | populate inventory into hosts file - name: Hosts | populate inventory into hosts file
blockinfile: blockinfile:
path: /etc/hosts path: /etc/hosts
block: "{{ hostvars.localhost.etc_hosts_inventory_block }}" block: "{{ hostvars.localhost.etc_hosts_inventory_block }}"
@@ -39,12 +41,14 @@
- loadbalancer_apiserver is defined - loadbalancer_apiserver is defined
- loadbalancer_apiserver.address is defined - loadbalancer_apiserver.address is defined
- name: Hosts | Retrieve hosts file content - name: Hosts | Update localhost entries in hosts file
block:
- name: Hosts | Retrieve hosts file content
slurp: slurp:
src: /etc/hosts src: /etc/hosts
register: etc_hosts_content register: etc_hosts_content
- name: Hosts | Extract existing entries for localhost from hosts file - name: Hosts | Extract existing entries for localhost from hosts file
set_fact: set_fact:
etc_hosts_localhosts_dict: >- etc_hosts_localhosts_dict: >-
{%- set splitted = (item | regex_replace('[ \t]+', ' ')|regex_replace('#.*$')|trim).split( ' ') -%} {%- set splitted = (item | regex_replace('[ \t]+', ' ')|regex_replace('#.*$')|trim).split( ' ') -%}
@@ -54,14 +58,14 @@
- etc_hosts_content.content is defined - etc_hosts_content.content is defined
- (item is match('^::1 .*') or item is match('^127.0.0.1 .*')) - (item is match('^::1 .*') or item is match('^127.0.0.1 .*'))
- name: Hosts | Update target hosts file entries dict with required entries - name: Hosts | Update target hosts file entries dict with required entries
set_fact: set_fact:
etc_hosts_localhosts_dict_target: >- etc_hosts_localhosts_dict_target: >-
{%- set target_entries = (etc_hosts_localhosts_dict|default({})).get(item.key, []) | difference(item.value.get('unexpected' ,[])) -%} {%- set target_entries = (etc_hosts_localhosts_dict|default({})).get(item.key, []) | difference(item.value.get('unexpected' ,[])) -%}
{{ etc_hosts_localhosts_dict_target|default({}) | combine({item.key: (target_entries + item.value.expected)|unique}) }} {{ etc_hosts_localhosts_dict_target|default({}) | combine({item.key: (target_entries + item.value.expected)|unique}) }}
loop: "{{ etc_hosts_localhost_entries|dict2items }}" loop: "{{ etc_hosts_localhost_entries|dict2items }}"
- name: Hosts | Update (if necessary) hosts file - name: Hosts | Update (if necessary) hosts file
lineinfile: lineinfile:
dest: /etc/hosts dest: /etc/hosts
line: "{{ item.key }} {{ item.value|join(' ') }}" line: "{{ item.key }} {{ item.value|join(' ') }}"
@@ -70,8 +74,11 @@
backup: yes backup: yes
unsafe_writes: yes unsafe_writes: yes
loop: "{{ etc_hosts_localhosts_dict_target|default({})|dict2items }}" loop: "{{ etc_hosts_localhosts_dict_target|default({})|dict2items }}"
when: populate_localhost_entries_to_hosts_file
# gather facts to update ansible_fqdn # gather facts to update ansible_fqdn
- name: Update facts - name: Update facts
setup: setup:
gather_subset: min gather_subset: min
when:
- not dns_late

2
roles/kubernetes/preinstall/tasks/main.yml
View File

@@ -74,8 +74,6 @@
- bootstrap-os - bootstrap-os
- import_tasks: 0090-etchosts.yml - import_tasks: 0090-etchosts.yml
when:
- not dns_late
tags: tags:
- bootstrap-os - bootstrap-os
- etchosts - etchosts