Questions regarding "when: condition"

[John Harmon]

The commented section of the following code works.  I was trying to simplify it by adding with_items; however, it seems to change the way it is evaluated?... at least that is my guess based on the verbosity:

skipping: [ansible-oel6] => (item=ansible)  => {
    "changed": false,
    "item": "ansible",
    "skip_reason": "Conditional result was False"
}

Playbook.

---
# tasks file for PS1_customize
- name: Appending customization to /etc/bashrc.  Logout/in to see changes
  blockinfile:
    path: /etc/bashrc
    backup: no
    marker: "# {mark} ANSIBLE MANAGED BLOCK - ps1_customizations"
    block: |

      #If id command returns zero, you've root access.
      if [ $(id -u) -eq 0 ]; then # set red color prompt for root
        PS1="\\[$(tput setaf 1)\\]\\u@\\h:\\w # \\[$(tput sgr0)\\]"
      elif [ $(id -u) -eq 4000  ]; then
        # Configure special user with green
        PS1="\[$(tput bold)\]\[$(tput setaf 2)\]\\u@\\h:\\w \\$ \[$(tput sgr0)\]"
      else
        PS1="\\u@\\h:\\w \$ "
      fi
  when: ansible_hostname | lower | search("item")
#  when: ansible_hostname | lower | search("prod") or
#        ansible_hostname | lower | search("backup") or
#        ansible_hostname | lower | search("nfs") or
#        ansible_hostname | lower | search("ansible")
  with_items:
    - prod
    - backup
    - nfs
    - ansible
  failed_when: false

So, I have a couple of questions.
1.  What would be the proper way to see if the hostname contains "splat" using with_items? 
2.  What would be the reverse of this?  (ie not in, or not contained, etc)

In summary, I am setting production and a list of other servers to red (for root user prompt).  On non-production servers, I will be setting it to yellow (hence the reason for question #2).

[Matt Martz]

Using `with_items` like you are, you would need to use `search(item)` without the quotes around item.  Otherwise "item" is treated as the string item, instead of the variable called item.

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Matt Martz
@sivel
sivel.net

[John Harmon]

That is good to know, but I made the change and still experience the issue; however, with that info I changed it to the following which works for the first section:

when: item in ansible_hostname

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[Kai Stian Olstad]

On Monday, 22 January 2018 23.55.22 CET John Harmon wrote:
> when: ansible_hostname | lower | search("item")
> # when: ansible_hostname | lower | search("prod") or
> # ansible_hostname | lower | search("backup") or
> # ansible_hostname | lower | search("nfs") or
> # ansible_hostname | lower | search("ansible")
> with_items:
> - prod
> - backup
> - nfs
> - ansible
> failed_when: false
>
> So, I have a couple of questions.
> 1. What would be the proper way to see if the hostname contains "splat"
> using with_items?

You got the answer from Matt, and that should work.

An alternative is to not use with_items but just use regex or.

when: ansible_hostname | lower is search("prod|backup|nfs|ansible")

> 2. What would be the reverse of this? (ie not in, or not contained, etc)

when: not (ansible_hostname | lower is search("prod|backup|nfs|ansible"))


--
Kai Stian Olstad

[John Harmon]

Oh, I like that.  Thank you.