I am running a command to get the status of tomcat and registering it in a variable. How do i extract the specific output of that command and put it in a variable to check further
Play -
- name: Check the State og tomcat service
shell: "svcs tomcat"
register: tomcat_status
- name: Show captured processes
debug:
msg: "{{ tomcat_status.stdout_lines|list }}"
The output of the above is -
server1 ok: {
"changed": false,
"msg": [
"STATE STIME FMRI",
"online 20:11:48 svc:/network/tomcat:tomcat"
]
}
How do i extract the value of STATE here? I want to know if it's online or disabled or shutdown etc.
NOTE - Output with -vvvv
server1 done: {
"changed": true,
"cmd": "svcs tomcat",
"delta": "0:00:00.025711",
"end": "2020-05-11 12:43:43.323017",
"invocation": {
"module_args": {
"_raw_params": "svcs tomcat",
"_uses_shell": true,
"argv": null,
"chdir": null,
"creates": null,
"executable": null,
"removes": null,
"stdin": null,
"stdin_add_newline": true,
"strip_empty_ends": true,
"warn": false
}
},
"rc": 0,
"start": "2020-05-11 12:43:43.297306",
"stderr": "",
"stderr_lines": [],
"stdout": "STATE STIME FMRI\nonline 20:11:48 svc:/network/tomcat:tomcat",
"stdout_lines": [
"STATE STIME FMRI",
"online 20:11:48 svc:/network/tomcat:tomcat"
]
}
Based on your debug about, tomcat_status.stdout_lines is a list (you don't need the |list filter here because it's already a list) that looks like:
[
"STATE STIME FMRI",
"online 20:11:48 svc:/network/tomcat:tomcat"
]
To get the STATE value, you need the first field from the second line. So:
- set_fact:
tomcat_state: "{{ tomcat_status.stdout_lines.1.split().0 }}"
That takes the second line (tomcat_status.stdout_lines.1) then splits it on whitespace (.split()), and then takes the first value (.0).
Here's a complete test:
- hosts: localhost
vars:
tomcat_status:
stdout_lines:
- "STATE STIME FMRI"
- "online 20:11:48 svc:/network/tomcat:tomcat"
tasks:
- set_fact:
tomcat_state: "{{ tomcat_status.stdout_lines.1.split().0 }}"
- debug:
var: tomcat_state
Running that playbook results in:
PLAY [localhost] *****************************************************************************
TASK [set_fact] ******************************************************************************
ok: [localhost]
TASK [debug] *********************************************************************************
ok: [localhost] => {
"tomcat_state": "online"
}
PLAY RECAP ***********************************************************************************
localhost : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0