The name of a node is not resolved after it was resolved ?

[Arc Tangente]

Hello,

I start this playbook install-mediawiki.yml, the first role is executed without problems.

The second role has 4 tasks, executed fully the 2 first of them, but has suddently an issue: the name of the node is not resolved anymore.
I do not know why.

I have installed ansible in a virtual python environment and
defines the inventory so:

(ansible2.7.10) user-ansible@node-manager:~$ cat inventaire.ini
[apache]
http2

[db]
bdd2

/etc/hosts in each node contains this:

(ansible2.7.10) user-ansible@node-manager:~$ cat /etc/hosts
…
192.168.0.103   http2
192.168.0.104   bdd2

The SSH connexion works withe key, the public keys are in the nodes…

Here is a ping test:

(ansible2.7.10) user-ansible@node-manager:~$ ansible -i inventaire.ini all -m ping      
bdd2 | SUCCESS => {
   "changed": false,
   "ping": "pong"
}
http2 | SUCCESS => {
   "changed": false,
   "ping": "pong"
}

The playbook:

(ansible2.7.10) user-ansible@node-manager:~$ cat install-mediawiki.yml  
---

- name: "mediaWiki db configuration"
 hosts: db
 gather_facts: no
 tags: [ "mariadb", "mysql" ]
 roles:
   - role: "mediawiki/confdb"

- name: "MediaWiki apache configuration"
 hosts: apache
 gather_facts: no
 tags: "apache"
 roles:
   - role: "mediawiki/confapache"

The role mediawiki/confapache/tasks/main.yml:

(some informations about install.php)

(ansible2.7.10) user-ansible@node-manager:~$ cat roles/mediawiki/confapache/tasks/main.yml
# ~/roles/mediawiki/confapache/tasks/main.yml
---

#1. Creation of the directory Mediawiki
- name: "mediawiki directory"      
 file:
   path: "{{mediawiki_directory}}"     # => /var/www/html/mediawiki
   owner: "apache"
   group: "apache"
   state: directory

#2. Unarchiving of the archive Mediawiki and change the name
- name: "uncompress mediawiki archive"
 unarchive:
   src: "{{mediawiki_archive_url}}"    # => https://releases… …/mediawiki/1.31/mediawiki-1.31.1.tar.gz
   dest: "{{mediawiki_directory}}"     # => /var/www/html/mediawiki
   owner: "apache"
   group: "apache"
   remote_src: yes
     # delete mediawiki-1.xx.x/ in the filesname
   extra_opts: --transform=s/mediawiki-[0-9\.]*\///

#3. executes the task with the user apache, we move in the diectory maintenance if
 localsetting.php doesn't exist.
- name: "mediawiki configuration"
 become: yes
 become_user: "apache"
 args:
   creates: "{{mediawiki_directory}}/LocalSettings.php"    # => /var/www/html/mediawiki/LocalSettings.php
   chdir: "{{mediawiki_maintenance_directory}}"            # => /var/www/html/mediawiki/maintenance (contient install.php
!!)
 command:
   php install.php --scriptpath /{{mediawiki_name}} --dbname mediawiki --lang fr --dbuser {{mediawiki_db_user}} --dbpass {
{mediawiki_db_password}} --pass {{mediawiki_admin_password}} --dbserver {{mediawiki_db_host}} {{mediawiki_title}} {{mediawi
ki_admin_user}}
 run_once: yes
 delegate_to: "{{item}}"
 with_items: "{{groups.apache}}"

#4. executes this task with the user apache, we move to the directory 'maintenance' and execute a command to udate.
jour de la base une seule fois
- name: "mediawiki db update"
 become: yes
 become_user: "apache"
 command: php update.php --quick
 args:
   chdir: "{{mediawiki_maintenance_directory}}"            # => /var/www/html/mediawiki/maintenance (contient install.php
!!)
 run_once: yes
 register: resultat
 changed_when: "' ...done.' in resultat.stdout"

And then the issue:

(ansible2.7.10) user-ansible@node-manager:~$ ansible-playbook -i inventaire.ini --user user-ansible --become --ask-become-pass --ask-vault-pass install-mediawiki.yml          
SUDO password:  
Vault password:  

PLAY [mediaWiki db configuration] *********************************************************************************************************************************************************************************************************************

TASK [mediawiki/confdb : mediawiki database] **********************************************************************************************************************************************************************************************************
ok: [bdd2]

TASK [mediawiki/confdb : mediawiki user+privileges] ***************************************************************************************************************************************************************************************************
ok: [bdd2] => (item=['http2'])

PLAY [MediaWiki apache configuration] *****************************************************************************************************************************************************************************************************************

TASK [mediawiki/confapache : mediawiki directory] *****************************************************************************************************************************************************************************************************
ok: [http2]

TASK [mediawiki/confapache : uncompress mediawiki archive] ********************************************************************************************************************************************************************************************
ok: [http2]

TASK [mediawiki/confapache : mediawiki configuration] *************************************************************************************************************************************************************************************************
failed: [http2] (item=['http2']) => {"item": "['http2']", "msg": "Failed to connect to the host via ssh: ssh: Could not resolve hostname ['http2']: Name or service not known", "unreachable": true}
fatal: [http2]: UNREACHABLE! => {"changed": false, "msg": "All items completed", "results": [{"_ansible_ignore_errors": null, "_ansible_item_label": "['http2']", "_ansible_item_result": true, "item": "['http2']", "msg": "Failed to connect to the h
ost via ssh: ssh: Could not resolve hostname ['http2']: Name or service not known", "unreachable": true}]}

NO MORE HOSTS LEFT ************************************************************************************************************************************************************************************************************************************
       to retry, use: --limit @/home/user-ansible/install-mediawiki.retry

PLAY RECAP ********************************************************************************************************************************************************************************************************************************************
bdd2                       : ok=2    changed=0    unreachable=0    failed=0    
http2                      : ok=2    changed=0    unreachable=1    failed=0

Why is the node http2 suddently unreachable, although it was reachable ?

Thanks for your help.

[dulh...@mailbox.org]

- name: "mediawiki configuration"
 become: yes
 become_user: "apache"
 args:
   creates: "{{mediawiki_directory}}/LocalSettings.php"    # => /var/www/html/mediawiki/LocalSettings.php
   chdir: "{{mediawiki_maintenance_directory}}"            # => /var/www/html/mediawiki/maintenance (contient install.php !!)
 command:
   php install.php --scriptpath /{{mediawiki_name}} --dbname mediawiki --lang fr --dbuser {{mediawiki_db_user}} --dbpass {{mediawiki_db_password}} --pass {{mediawiki_admin_password}} --dbserver {{mediawiki_db_host}} {{mediawiki_title}} {{mediawi
ki_admin_user}}
 run_once: yes
 delegate_to: "{{item}}"
 with_items: "{{groups.apache}}"

have you tried loop instead of with_items? something like:

  ...
  run_once: yes
  delegate_to: "{{item}}"
  loop:
    - "{{groups.apache}}"

if I am not mistaken with_items is deprecated?

also the indentation looks a bit suspicious, or is that just the email formatting?

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[dulh...@mailbox.org]

sorry to hear the loop did not help.
Generally I believe it is better to reply to the group and not to the correspondent personally (probably not even intended)

On 04.03.22 09:44, Arc Tangente wrote:

Hi,

Thanks for your help.

I changed 'with_items' for 'loop', as proposed. It does not resolve the issue.

By the way 'with_items' works well in another task in another role.

About the indentation, it is because of the email formating… (sorry)

'become, become_user, args, command, run_once, delegate_to and with_items' are aligned with 'name' (not with - )

'creates and chdir' have two more spaces compared to 'args'.

[Arc Tangente]

Hi,

Thanks for your help.

I changed 'with_items' for 'loop', as proposed. It does not resolve the issue.

By the way 'with_items' works well in another task in another role.

About the indentation, it is because of the email formating… (sorry)

'become, become_user, args, command, run_once, delegate_to and with_items' are aligned with 'name' (not with - )

'creates and chdir' have two more spaces compared to 'args'.

Le jeudi 3 mars 2022 à 20:59:43 UTC+1, dulh...@mailbox.org a écrit :

[Rajthecomputerguy]

you can try in separate yaml file 

***********************************************************************************************************************

mediawiki_config.yaml

- name: "mediawiki configuration"
 become: yes
 become_user: "apache"
 args:
   creates: "{{mediawiki_directory}}/LocalSettings.php"    # => /var/www/html/mediawiki/LocalSettings.php
   chdir: "{{mediawiki_maintenance_directory}}"            # => /var/www/html/mediawiki/maintenance (contient install.php
!!)
 command:
   php install.php --scriptpath /{{mediawiki_name}} --dbname mediawiki --lang fr --dbuser {{mediawiki_db_user}} --dbpass {
{mediawiki_db_password}} --pass {{mediawiki_admin_password}} --dbserver {{mediawiki_db_host}} {{mediawiki_title}} {{mediawi
ki_admin_user}}
 run_once: yes

****************************************************************************************************************************************************

- name:  "mediawiki configuration"
  include:  mediawiki_config.yaml
  delegate_to: '{{ item }}'

  with_items: "{{ groups.apache }}"

[Arc Tangente]

Hi,

thanks. I have searched a lot these past days for a solution.

I have installed ansible in another VM, Ubuntu 20.04, as sshpass with apt. I configured everything, so that the first part of network works. I have also this time configured /etc/ansible/hosts, therefor I didn't use -i inventaire.ini any more in the cli (ad-oc). Before, I didn't have this file, because I was in a virtual python environment.

The result is positive, it works well. I can now access to mediawiki through a web browser :)

I will make a try with your proposal, but a bit later. I am a beginner, follow a tutorial and want learn further…

Have a nice day.