Note that my awk command should say "print $1" to get the IP address. I
don't see a way to edit my original question here to make this change.
On Tuesday, March 3, 2020 at 12:38:38 PM UTC-8, Robert F wrote:
>
> I'm trying to get the IP address of one of my remote hosts by querying my
> controller machine's /etc/hosts file which happens to contain the IP
> addresses of all the servers I build with Ansible. My Ansible playbook
> looks like this:
>
> ---
> hosts: all
> gather_facts: yes
> become: yes
>
>
> pre_tasks:
> - name: get file server's IP address
> command: "grep prod-fs1 /etc/hosts | awk '{ print $0 }'"
> register: fs_ip_addr
> delegate_to: localhost
>
>
> - debug: var={{ fs_ip_addr }}
>
>
> However, I'm getting this error which I don't know how to fix:
>
> TASK [get file server's IP address]
> *************************************************************************************************************************************************
> fatal: [prod-web1.example.com -> localhost]: FAILED! => {"changed": true,
> "cmd": ["grep", "prod-fs1", "/etc/hosts", "|", "awk", "{ print $0 }"],
> "delta": "0:00:00.010303", "end": "2020-03-03 12:24:36.207656", "msg":
> "non-zero return code", "rc": 2, "start": "2020-03-03 12:24:36.197353",
> "stderr": "grep: |: No such file or directory\ngrep: awk: No such file or
> directory\ngrep: { print $0 }: No such file or directory", "stderr_lines":
> ["grep: |: No such file or directory", "grep: awk: No such file or
> directory", "grep: { print $0 }: No such file or directory"], "stdout":
> "/etc/hosts:45.79.93.135 prod-fs1.example.com prod-fs1",
> "stdout_lines": ["/etc/hosts:45.79.93.135 prod-fs1.example.com
> prod-fs1"]}
>
>
> PLAY RECAP
> **************************************************************************************************************************************************************************
> prod-web1.example.com : ok=7 changed=0 unreachable=0 failed=1
> skipped=0 rescued=0 ignored=0;p
>
> It appears that the error is caused by the pipe symbol which is why I
> enclosed the entire command in double quotes. But the error occurs even if
> I remove them.
>
> I should add that I know I could use this method of getting the IP address
> of my file server...
>
> - name: get file server's IP address
> set_fact: fs_ip_addr=hostvars[groups['fileservers'][0]]['ansible_eth0
> ']['ipv4']['address']
>
> However, this option isn't available to me since I have to call the
> playbook with the "limit" argument which cause the variable to not be
> available.
>
> deploy-webservers.yml -I inventory -l webservers
>
>
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