pipeline (|) not working with the -e option

[DHAVAL JAISWAL]

Why extra variables (-e) ignoring commands after pipeline ("|") while running playbook with -e options.


Following playbook giving output till "netstat -an" only. I want the output of this "netstat -an | grep 8080" or any command which can be run at the run time on remote host.  


ansible-playbook /etc/ansible/command_run.yml -e "ip=192.168.4.10" -e 'command="netstat -an | grep 8080"'

command_run.yml

- hosts: "{{ip}}"
  gather_facts: no
  remote_user: remote
  connection: local

  tasks:
   - name: Running command
     command: ansible {{ip}} -a "{{command}}"



However, Following is working.

ansible-playbook /etc/ansible/command_run.yml -e "ip=192.168.4.10" -e 'command="free -m"'. 

[Josh Smift]

DJ> Why extra variables (-e) ignoring commands after pipeline ("|") while
DJ> running playbook with -e options.

http://docs.ansible.com/ansible/command_module.html says

The command module takes the command name followed by a list of
space-delimited arguments. The given command will be executed on all
selected nodes. It will not be processed through the shell, so variables
like $HOME and operations like "<", ">", "|", ";" and "&" will not work
(use the shell module if you need these features).

So, you need the 'shell' module if you want to run a pipeline. (See
http://docs.ansible.com/ansible/shell_module.html#notes for some reasons
why you might not want to use 'shell' unless you really need to.)

-Josh (j...@care.com)

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[bablu]

Tried with the shell module. It's working for the following scenario. However, not working for cluster where more than one server define in the inventory.

working:

ansible-playbook /etc/ansible/command_run.yml -e "ip=192.168.4.10" -e 'command="netstat -an | grep 8080"'

Not working:
ansible-playbook /etc/ansible/command_run.yml -e "ip=group_domain" -e 'command="netstat -an | grep 8080"'

command_run.yml

- hosts: "{{ip}}"
  gather_facts: no
  remote_user: remote
  connection: local

  tasks:
   - name: Running command

     shell: ssh remote@{{ip}} {{command}}

[Josh Smift]

If {{ip}} might be an Ansible group name, rather than a thing you can SSH
to, then you can't SSH to {{ip}}.

Backing up a step, what are you trying to do here? if you want to run a
command on a bunch of hosts, Ansible will already SSH to those hosts from
your control host to run the command, so you may just need

shell: {{command}}

for your task.

And, if you just want to run a command that you specify on the command
line, you can use the ad-hoc 'ansible' command for that, rather than a
playbook, e.g.

ansible group_domain -m shell -a 'netstat -an | grep 8080'

If you leave off the '-m shell' part, it uses the 'command' module by
default, so you can do stuff like

ansible group_domain -a 'free -m'

if you don't have pipelines or other stuff that requires the 'shell' module.

[DHAVAL JAISWAL]

you touch the exact part where i was missing

It works !!

Thanks

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Thanks & Regards
Dhaval Jaiswal