How to display the current java version and host name using loop in ansible.

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1

I need to show the current java version and the host name of the host server using Loop in my playbook. Currently i am able to fetch the hostname but not able o append the result which i got in my registered variable. Also, output which i am getting is not the expected one.
There are some queries i have -

  1. Why we are getting 4 outputs as we have only two entries in hosts file. I need only two results

  2. i need to append the output of “register” variable with the {{item}}, so the output must look like -
    i) host is zlp12037 with java version - 1.7
    ii) host is zlp12036 with java version - 1.6
    in future if i add any entry of the hosts, then it must work in loop and provide one more output in the same manner.

  3. I need to pass this output to the localhost which will be my another play, so how can i achieve this result in other play with hosts= localhost.

Any help will be really appreciated as i am new to this.

Below are the details -

Host inventory -

[testserver]
zlp12037 ansible_ssh_host=zlp12037.vci.att.com ansible_ssh_user=abc
zlp12036 ansible_ssh_host=zlp12036.vci.att.com ansible_ssh_user=abc

Playbook:

  • hosts: testserver
    tasks:

  • name: Get the Host Name
    shell: host $(hostname -i) | awk ‘{print $NF }’|sed ‘s/.$//’
    register: hosts

  • name: Fetch Java Version
    shell: java -version 2>&1 | grep version | awk ‘{print $3}’ | sed ‘s/"//g’
    register: result

  • debug: msg=“host is {{item}}”
    with_items: “{{ groups[‘testserver’] }}”

Result of playbook -

PLAY [testserver] **************************************************************

TASK [setup] *******************************************************************
ok: [zlp12037]
ok: [zlp12036]

TASK [Get the Host Name] *******************************************************
changed: [zlp12037]
changed: [zlp12036]

TASK [Fetch Java Version] ******************************************************
changed: [zlp12037]
changed: [zlp12036]

TASK [debug] *******************************************************************
ok: [zlp12037] => (item=zlp12037) => {
“item”: “zlp12037”,
“msg”: “host is zlp12037”
}
ok: [zlp12037] => (item=zlp12036) => {
“item”: “zlp12036”,
“msg”: “host is zlp12036”
}
ok: [zlp12036] => (item=zlp12036) => {
“item”: “zlp12036”,
“msg”: “host is zlp12036”
}
ok: [zlp12036] => (item=zlp12037) => {
“item”: “zlp12037”,
“msg”: “host is zlp12037”
}

PLAY RECAP *********************************************************************
zlp12036 : ok=4 changed=2 unreachable=0 failed=0
zlp12037 : ok=4 changed=2 unreachable=0 failed=0

2

Try this one

3

I dont want in this way… i needed it using the loop. The same is mentioned in the question

4

I need to show the current java version and the host name of the host
server using Loop in my playbook. Currently i am able to fetch the hostname
but not able o append the result which i got in my registered variable.
Also, output which i am getting is not the expected one.
There are some queries i have -
1. Why we are getting 4 outputs as we have only two entries in hosts file.
I need only two results

Testserver contain two host, both host run the loop for both of them, 2*2 = 4.
Add "run_once: true" to only run the loop one time.

2. i need to append the output of "register" variable with the {{item}}, so
the output must look like -
      i) host is zlp12037 with java version - 1.7
      ii) host is zlp12036 with java version - 1.6
      in future if i add any entry of the hosts, then it must work in loop
and provide one more output in the same manner.

3. I need to pass this output to the localhost which will be my another
play, so how can i achieve this result in other play with hosts= localhost.

Any help will be really appreciated as i am new to this.

Below are the details -

Host inventory -

[testserver]
zlp12037 ansible_ssh_host=zlp12037.vci.att.com ansible_ssh_user=abc
zlp12036 ansible_ssh_host=zlp12036.vci.att.com ansible_ssh_user=abc

Playbook:

- hosts: testserver
  tasks:

  - name: Get the Host Name
    shell: host $(hostname -i) | awk '{print $NF }'|sed 's/\.$//'
    register: hosts

  - name: Fetch Java Version
    shell: java -version 2>&1 | grep version | awk '{print $3}' | sed
's/"//g'
    register: result
  - debug: msg="host is {{item}}"
    with_items: "{{ groups['testserver'] }}"

Maybe this will help you forward.

- debug: msg="Host is {{ item }} with java version - {{ hostvars[item].result.stdout }}"
   with_items: "{{ ansible_play_batch }}"
   run_once: true
   delegate_to: localhost