I have a similar issue with a playbook which runs once a day using a cron
job on the Ansible control host. Probably once a week, I get the follwoing
error for a random server:
(..)
The following task failed for host ejpdxannnn-mgt.example.com:
template: {"dest": "/tmp/fragments.d/SLES.frag", "src":
"std-templates/std-playbook-make-inventory-by-os.j2", "group": "admin2",
"mode": "0400", "owner": "admin2"}
with the following message:
AnsibleUndefinedVariable: 'dict object' has no attribute 'ansible_hostname'
A complete dump of the error:
{"changed": false, "failed": true, "msg": "AnsibleUndefinedVariable: 'dict
object' has no attribute 'ansible_hostname'"}
(..)
Ansible version is 2.0.1.0. The playbook runs on 600 hosts with forks=20.
The Ansible control host has 16 GB RAM and if I run the playbook manually
there is no memory shortage (no swapping on Ansible control host) and I can
not reproduce the error.
It seems that every now and then, Ansible does not gather the facts for all
600 hosts or the facts get lost on the Ansible control host due to some
unknown resource constraints. As far as I understand the concept, Ansible
keeps all the facts in the control host's memory while the playbook is run.
For 600 hosts that is a lot of data.
The playbook is:
admin2@xxxxx:/data/ansible/playbooks> cat
std-playbook-make-inventory-by-os.yml
---
- hosts: all
gather_facts: True
tasks:
- set_fact:
path_to_fragments: /tmp/fragments.d
file_inventory: /data/ansible/inventory/inventory.os
- hosts: all[0]
gather_facts: False
tasks:
- name: Remove file ansible host:{{ file_inventory }}
local_action: file path={{ file_inventory }} state=absent
changed_when: False
- name: Remove dir ansible host:{{ path_to_fragments }}
local_action: file path={{ path_to_fragments }} state=absent
changed_when: False
- name: Make dir ansible host:{{ path_to_fragments }}
local_action: file path={{ path_to_fragments }} state=directory
mode=0700
changed_when: False
- hosts: all
gather_facts: False
tasks:
##
## SLES, Solaris
##
- name: Group server by distribution
group_by: key={{ ansible_distribution }}
##
## SLES-11, SLES-12
##
- name: Group server by distribution, distribution_major_version
group_by: key={{ ansible_distribution }}-{{
ansible_distribution_major_version }}
##
## SLES-11-4, SLES-12-0
##
- name: Group server by distribution, distribution_major_version,
ansible_distribution_release
group_by: key={{ ansible_distribution }}-{{
ansible_distribution_major_version }}-{{ansible_distribution_release}}
##
## Solaris-10, Solaris-11.2
##
- name: Group server by distribution, distribution_version
group_by: key={{ ansible_distribution }}-{{
ansible_distribution_version }}
#
# For each following statement of type < - hosts: XXXX >, an Ansible group
[ XXXX ]
# is generated in an single inventory file named
inventory/{{file_inventory}}
#
- hosts: SLES
gather_facts: False
vars:
fragment_file: "{{ ansible_distribution }}.frag"
tasks:
- name: Template file {{ path_to_fragments }}/{{ fragment_file }}
local_action: template
src=std-templates/std-playbook-make-inventory-by-os.j2 dest={{
path_to_fragments }}/{{ fragment_file }} owner=admin2 group=admin2 mode=0400
run_once: true
changed_when: False
- name: Lineinfile header to file {{ path_to_fragments }}/{{
fragment_file }}
local_action: lineinfile dest={{ path_to_fragments }}/{{ fragment_file
}} insertbefore=BOF line="[{{ ansible_distribution }}]"
run_once: true
changed_when: False
- hosts: SLES-12
gather_facts: False
vars:
fragment_file: "{{ ansible_distribution }}-{{
ansible_distribution_major_version }}.frag"
tasks:
- name: Template file {{ path_to_fragments }}/{{ fragment_file }}
local_action: template
src=std-templates/std-playbook-make-inventory-by-os.j2 dest={{
path_to_fragments }}/{{ fragment_file }} owner=admin2 group=admin2 mode=0400
run_once: true
changed_when: False
- name: Lineinfile header to file {{ path_to_fragments }}/{{
fragment_file }}
local_action: lineinfile dest={{ path_to_fragments }}/{{ fragment_file
}} insertbefore=BOF line="[{{ ansible_distribution }}-{{
ansible_distribution_major_version }}]"
run_once: true
changed_when: False
- hosts: SLES-12-0
gather_facts: False
vars:
fragment_file: "{{ ansible_distribution }}-{{
ansible_distribution_major_version }}-{{ ansible_distribution_release
}}.frag"
tasks:
- name: Template file {{ path_to_fragments }}/{{ fragment_file }}
local_action: template
src=std-templates/std-playbook-make-inventory-by-os.j2 dest={{
path_to_fragments }}/{{ fragment_file }} owner=admin2 group=admin2 mode=0400
run_once: true
changed_when: False
- name: Lineinfile header to file {{ path_to_fragments }}/{{
fragment_file }}
local_action: lineinfile dest={{ path_to_fragments }}/{{ fragment_file
}} insertbefore=BOF line="[{{ ansible_distribution }}-{{
ansible_distribution_major_version }}-{{ansible_distribution_release }}]"
run_once: true
changed_when: False
- hosts: SLES-11
gather_facts: False
vars:
fragment_file: "{{ ansible_distribution }}-{{
ansible_distribution_major_version }}.frag"
tasks:
- name: Template file {{ path_to_fragments }}/{{ fragment_file }}
local_action: template
src=std-templates/std-playbook-make-inventory-by-os.j2 dest={{
path_to_fragments }}/{{ fragment_file }} owner=admin2 group=admin2 mode=0400
run_once: true
changed_when: False
- name: Lineinfile header to file {{ path_to_fragments }}/{{
fragment_file }}
local_action: lineinfile dest={{ path_to_fragments }}/{{ fragment_file
}} insertbefore=BOF line="[{{ ansible_distribution }}-{{
ansible_distribution_major_version }}]"
run_once: true
changed_when: False
- hosts: SLES-11-4
gather_facts: False
vars:
fragment_file: "{{ ansible_distribution }}-{{
ansible_distribution_major_version }}-{{ ansible_distribution_release
}}.frag"
tasks:
- name: Template file {{ path_to_fragments }}/{{ fragment_file }}
local_action: template
src=std-templates/std-playbook-make-inventory-by-os.j2 dest={{
path_to_fragments }}/{{ fragment_file }} owner=admin2 group=admin2 mode=0400
run_once: true
changed_when: False
- name: Lineinfile header to file {{ path_to_fragments }}/{{
fragment_file }}
local_action: lineinfile dest={{ path_to_fragments }}/{{ fragment_file
}} insertbefore=BOF line="[{{ ansible_distribution }}-{{
ansible_distribution_major_version }}-{{ ansible_distribution_release }}]"
run_once: true
changed_when: False
- hosts: Solaris
gather_facts: False
vars:
fragment_file: "{{ ansible_distribution }}.frag"
tasks:
- name: Template file {{ path_to_fragments }}/{{ fragment_file }}
local_action: template
src=std-templates/std-playbook-make-inventory-by-os.j2 dest={{
path_to_fragments }}/{{ fragment_file }} owner=admin2 group=admin2 mode=0400
run_once: true
changed_when: False
- name: Lineinfile header to file {{ path_to_fragments }}/{{
fragment_file }}
local_action: lineinfile dest={{ path_to_fragments }}/{{ fragment_file
}} insertbefore=BOF line="[{{ ansible_distribution }}]"
run_once: true
changed_when: False
- hosts: Solaris-11.2
gather_facts: False
vars:
fragment_file: "{{ ansible_distribution }}-{{
ansible_distribution_version }}.frag"
tasks:
- name: Template file {{ path_to_fragments }}/{{ fragment_file }}
local_action: template
src=std-templates/std-playbook-make-inventory-by-os.j2 dest={{
path_to_fragments }}/{{ fragment_file }} owner=admin2 group=admin2 mode=0400
run_once: true
changed_when: False
- name: Lineinfile header to file {{ path_to_fragments }}/{{
fragment_file }}
local_action: lineinfile dest={{ path_to_fragments }}/{{ fragment_file
}} insertbefore=BOF line="[{{ ansible_distribution }}-{{
ansible_distribution_version }}]"
run_once: true
changed_when: False
- hosts: Solaris-10
gather_facts: False
vars:
fragment_file: "{{ ansible_distribution }}-{{
ansible_distribution_version }}.frag"
tasks:
- name: Template file {{ path_to_fragments }}/{{ fragment_file }}
local_action: template
src=std-templates/std-playbook-make-inventory-by-os.j2 dest={{
path_to_fragments }}/{{ fragment_file }} owner=admin2 group=admin2 mode=0400
run_once: true
changed_when: False
- name: Lineinfile header to file {{ path_to_fragments }}/{{
fragment_file }}
local_action: lineinfile dest={{ path_to_fragments }}/{{ fragment_file
}} insertbefore=BOF line="[{{ ansible_distribution }}-{{
ansible_distribution_version }}]"
run_once: true
changed_when: False
- hosts: all[0]
gather_facts: False
tasks:
- name: Assemble fragments to file {{ file_inventory }}
local_action: assemble src={{ path_to_fragments }} dest={{
file_inventory }} owner=admin2 group=admin2 mode=0644
changed_when: False
- name: Add header block to file {{ file_inventory }}
local_action:
module: blockinfile
dest: "{{ file_inventory }}"
state: present
block: |
#
#
# This file is generated using a cron job and
playbooks/std-playbook-make-inventory-by-os.yml
#
#
insertbefore: BOF
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