Thanks Pshem for your solution, Is there anything i can use as ANY
condition like if any of the servers return value less than 10 do a service
restart on all servers. Below is my play book which i tried.
--- # first playbook
- hosts: apacheweb
remote_user: ansible
become: true
become_method: sudo
gather_facts: yes
tasks:
- name: Register free memory
shell: free -g | grep Mem | awk '{print $4}'
register: memory
- set_fact: mem={{ memory.stdout }}
- set_fact: Mem_check=False
when: mem|int > 10
- name: Restart web service
service:
name: httpd
state: restarted
when: not Mem_check
Here i am trying to use set_fact with boolean values if it changes to True
from false do a restart on all machines . But still it is only restarting
the services on machines that are effected.
On Monday, November 20, 2017 at 1:22:39 PM UTC+5:30, Pshem Kowalczyk wrote:
>
> Ansible operates on an internal loop. Tasks are executed (and facts set)
> on 'per-device' basis. If you need the results of all the checks I suggest
> you do the following:
>
> 1. Register the results and store them into files on the controller
> (either can run as internal ansible loop or manual set of tasks)
> 2. Add another play in your playbook that's executed on the localhost -
> check the content of each of the files and identify if you have to restart
> or not. You can store this as a fact against 'localhost' so it's accessible
> via hostvars['localhost']['var_name']
> 3. Add yet another play that conditionally restarts all the servers if the
> content of the variable indicates the need for a restart
>
> the whole thing can be also done without storing info in the files - you
> can loop over all hosts in a group so you can access the results of the
> check.
>
> kind regards
> Pshem
>
>
> On Mon, 20 Nov 2017 at 19:15 shashank pai <[email protected]
> <javascript:>> wrote:
>
>>
>> down votfavorite
>> <https://stackoverflow.com/questions/47330287/or-condition-in-ansible-skips-the-hosts-that-are-not-matched-in-condition/47330708#>
>>
>> I am trying to check memory consumption of four machines and any of the
>> machines memory consumption is less than 10 GB I want to restart services
>> on all machines.
>>
>> I have used or operator in when condition, I am able to restart the
>> services only on the ones that have memory less than 10 GB others get
>> skipped. My requirement is if any of the hosts memory goes down below 10GB
>> I want services to be restarted on all machines not just on machines that
>> have memory below 10GB.
>>
>> Below is the Ansible playbook:
>>
>>
>> - hosts: webapp
>> become: true
>> become_method: sudo
>> gather_facts: yes
>> vars:
>> servers:
>> "10.0.0.1": "machine1"
>> "10.0.0.2": "machine2"
>> "10.0.0.3": "machine3"
>> "10.0.0.4": "machine4"
>> tasks:
>> - name: get mem free for machine1
>> shell: free -g | grep Mem | awk '{print $4}'
>> register: machine1_mem
>> - debug: var=machine1_mem.stdout
>> when: servers[ansible_default_ipv4.address] == "machine1"
>> - name: get mem free for machine2
>> shell: free -g | grep Mem | awk '{print $4}'
>> register: machine2_mem
>> - debug: var=machine2_mem.stdout
>> when: servers[ansible_default_ipv4.address] == "machine2"
>> - name: get mem free for machine3
>> shell: free -g | grep Mem | awk '{print $4}'
>> register: machine3_mem
>> - debug: var=machine3_mem.stdout
>> when: servers[ansible_default_ipv4.address] == "machine3"
>> - name: get mem free for machine4
>> shell: free -g | grep Mem | awk '{print $4}'
>> register: machine4_mem
>> - debug: var=machine4_mem.stdout
>> when: servers[ansible_default_ipv4.address] == "machine4"
>> - name: restart web services
>> when: ( machine4_mem.stdout|int <= 10 or machine1_mem.stdout|int <= 10 or
>> machine3_mem.stdout|int <= 10 or machine2_mem.stdout|int <= 10 )
>> action: service name=httpd state=restarted
>>
>>
>>
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