split with multiple columns in debug

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1

Hi,

When I try to split the output of uptime to capture the "load average from the below line

$ uptime
18:37:01 up 5 days, 4:37, 2 users, load average: 0.02, 0.05, 0.00

using the below playbook

2

load_avg: “{{ up_out.stdout_lines[0].split()[7:] }}”

Just use [7:] to get from position 7 on in your list.

3

Veera,

Be careful splitting uptime on white space because when a system is up less than 24 hours, it will show

12:58:10 up 6:51, 0 users, load average: 1.08, 0.99, 1.05

which will have one less white space and your desired output will be position 6.

I would recommend splitting the output on comma. The fourth value will always be load average.

Regards,

Stan

4

An even more elegant solution would be to use ‘[-3:]’ to get the last three items regardless of how many there are.

5

% cat split.yml

6

If you want the commas removed you can do that too.

  • “{{ text_to_split1.replace(‘,’,‘’).split()[-3:] }}”
  • “{{ text_to_split2.replace(‘,’,‘’).split()[-3:] }}”

ok: [localhost] => {
“msg”: [
[
“0.02”,
“0.05”,
“0.00”
],
[
“1.08”,
“0.99”,
“1.05”
]
]
}

Walter

7

Thanks a lot for the valuable input…

8

Thanks Walter… the options helped me a lot.

9

Given the registered variable *up_out*

  - command: uptime
    register: up_out

Use the filter community.general.jc to parse the stdout. The utility
*jc* "converts the output of many commands, file-types, and strings
to JSON or YAML". For example,

  uptime: "{{ up_out.stdout|community.general.jc('uptime') }}"

gives

  uptime:
    load_15m: 1.21
    load_1m: 1.84
    load_5m: 1.41
    time: 07:57:41
    time_hour: 7
    time_minute: 57
    time_second: 41
    uptime: 11 days, 18:12
    uptime_days: 11
    uptime_hours: 18
    uptime_minutes: 12
    uptime_total_seconds: 1015920
    users: 2

The first three attributes come from "load average". Quoting from man
uptime: "The averages are taken over the three time intervals." Now,
the usage is trivial. For example,

  load_average: >
    {{ uptime.load_1m }},
    {{ uptime.load_5m}},
    {{ uptime.load_15m }}

gives

  load_average: |-
    1.84, 1.41, 1.21

10

Excellent find Vladimir! I just shared this with my team. I was unaware of ‘jc’.

Walter

11

Thanks Vladimir !!!