Hello,
Ansible will run tasks in parallel against groups of hosts, so I suggest
you convert your
apache_sever_list.yaml
file into ansible inventory format
and put all the hosts in it into a group called 'apache'
then you can run tasks against
- hosts: apache
tasks:
- name: any tasks here run against all the hosts in apache group
simultaneously
What its nice is you can still use 'delegate_to: localhost' for your uri
task and it will still run the task from the ansible controller (but run it
in parallel for each host in your 'apache' group).
Also, have a look at 'template' module I think you will find it a lot
easier to create the html file than the combination of shell commands and
lineinfile.
I don't have time to test this today but try experimenting with organising
things as follows:
Create an inventory file for your apache hosts:
# file: apache_hosts
# this is an ansible inventory file (using 'ini' format but can use yaml)
# see
https://docs.ansible.com/ansible/latest/user_guide/intro_inventory.html for
more about inventory
[apache]
host1 ap_port=8081
host2 ap_port=80
host3 ap_port=8080
host4 ap_port=8008
host5 ap_port=8123
Create a template file like this:
# ansible template file: apache.html.j2
# see
https://docs.ansible.com/ansible/latest/user_guide/playbooks_variables.html#magic-variables-and-how-to-access-information-about-other-hosts
# for how to use variables in templates.
<html>
<body>
<h3>List of failed Apache servers</h3>
<table>
<table><tr><th>Hostname</th><th>Port</th></tr>
<%for host_result in apache_check_result %>
<tr><td>{{ examine apache_check_result to find hostname from results }}</td
>{{ again use apache_check_result to get at the port used | default('Failed'
}}</tr>
</table>
</body>
</html>
Create a playbook like this:
# playbook: apache_check.yml
- name: report on apache status
gather_facts: yes
hosts: apache
tasks:
- name: Check the apache server status
uri:
url: "{{ ansible_hostname }}:{{ ap_port }}"
method: GET
status_code: 200
body_format: raw
follow_redirects: all
return_content: yes
validate_certs: no
force: yes
register: apache_check_result
ignore_errors: yes
delegate_to: localhost
- name: show results for debugging purposes
debug:
var: apache_check_result
- name: template out the results
template:
src: apache_html.j2
dest: /var/apache.html
delegate_to: localhost
and run the playbook like this
ansible-playbook -i apache_hosts apache_check.yml
Sorry I haven't got time to debug this but I hope the above will illustrate
that by using ansible's inventory you can get your tasks to run in parallel
(and also that using the 'template' module is a great way to create files
from ansible.
Hope this helps get you on the right track.
All the best,
Jon
On Thursday, November 15, 2018 at 3:40:34 PM UTC, Build Admin wrote:
>
> Thank you for your reply.
> I tried using strategy as free and unable to use async in the task as task
> has dependency task. Could you please suggest code change or alternate
> method for running the task in parallel.
>
> ---
> - name: Main playbook
> gather_facts: no
> hosts: 127.0.0.1
> strategy: free
>
> tasks:
> - name: Create csv file and html file
> file:
> path: "{{ item }}"
> state: touch
> delegae_to: localhost
> become_user: awx
> become: no
> with_items:
> - /tmp/apache.csv
> - /tmp/apache.html
>
> - include_vars: apache_sever_list.yaml
>
> - include_tasks: apache_task.yaml
> with_items: '{{ apacheSevers }}'
>
> - name: Run the csv2html script
> shell: |
> echo "<h3>List of failed Apache servers</h3>"
> echo "<table>" ;
> echo "<table><tr><th>Hostname</th><th>Port</th></tr>"
> while read INPUT; do
> echo "<tr><td>${INPUT//,/</td><td>}</td></tr>";
> done < /tmp/apache.csv
> echo "</table>"
> delegae_to: localhost
> become_user: awx
> become: no
>
> - name: append
> lineinfile:
> dest: /tmp/apache.html
> line: "{{ output.stdout }}"
> insertafter: EOF
> delegae_to: localhost
> become_user: awx
> become: no
>
>
>
> *apche_task.yaml*
>
> - name: Check the apache server status
> uri:
> url: "{{ item.hostname }}:{{ item.port }}"
> method: GET
> status_code: 200
> body_format: raw
> follow_redirects: all
> return_content: yes
> validate_certs: no
> force: yes
> delegae_to: localhost
> become_user: awx
> become: no
>
>
> - name: append output to file
> lineinfile:
> dest: /tmp/apache.csv
> line: "{{ item.hostname }},{{ item.port }}"
> insertafter: EOF
> delegae_to: localhost
> become_user: awx
> become: no
>
>
>
>
> On Wednesday, November 14, 2018 at 9:07:18 AM UTC-5, Brian Coca wrote:
>>
>> I would look at the 'free' strategy, but you have others:
>>
>> https://docs.ansible.com/ansible/latest/plugins/strategy.html#plugin-list
>>
>>
>>
>>
>> --
>> ----------
>> Brian Coca
>>
>
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