How do I get logs/details of ansible-playbook module executions?

The playbook script task will generate stdout just like the non-playbook command, it just needs to be saved to a variable using register. Once we've got that, the debug module can print to the playbook output stream.

tasks:
- name: Hello yourself
  script: test.sh
  register: hello

- name: Debug hello
  debug: var=hello

- name: Debug hello.stdout as part of a string
  debug: "msg=The script's stdout was `{{ hello.stdout }}`."

Output should look something like this:

TASK: [Hello yourself] ******************************************************** 
changed: [MyTestHost]

TASK: [Debug hello] *********************************************************** 
ok: [MyTestHost] => {
    "hello": {
        "changed": true, 
        "invocation": {
            "module_args": "test.sh", 
            "module_name": "script"
        }, 
        "rc": 0, 
        "stderr": "", 
        "stdout": "Hello World\r\n", 
        "stdout_lines": [
            "Hello World"
        ]
    }
}

TASK: [Debug hello.stdout as part of a string] ******************************** 
ok: [MyTestHost] => {
    "msg": "The script's stdout was `Hello World\r\n`."
}

There is also other way to generate log file.

Before running ansible-playbook run the following commands to enable logging:

• Specify the location for the log file.

  export ANSIBLE_LOG_PATH=~/ansible.log

• Enable Debug

  export ANSIBLE_DEBUG=True

• To check that generated log file.

  less $ANSIBLE_LOG_PATH

Offical plugins

You can use the output callback plugins. For example, starting in Ansible 2.4, you can use the debug output callback plugin:

# In ansible.cfg:
[defaults]
stdout_callback = debug

(Altervatively, run export ANSIBLE_STDOUT_CALLBACK=debug before running your playbook)

Important: you must run ansible-playbook with the -v (--verbose) option to see the effect. With stdout_callback = debug set, the output should now look something like this:

TASK [Say Hello] ********************************
changed: [192.168.1.2] => {
    "changed": true,
    "rc": 0
}

STDOUT:


Hello!



STDERR:

Shared connection to 192.168.1.2 closed.

There are other modules besides the debug module if you want the output to be formatted differently. There's json, yaml, unixy, dense, minimal, etc. (full list).

For example, with stdout_callback = yaml, the output will look something like this:

TASK [Say Hello] **********************************
changed: [192.168.1.2] => changed=true 
  rc: 0
  stderr: |-
    Shared connection to 192.168.1.2 closed.
  stderr_lines:
  - Shared connection to 192.168.1.2 closed.
  stdout: |2-

    Hello!
  stdout_lines: <omitted>

Third-party plugins

If none of the official plugins are satisfactory, you can try the human_log plugin. There are a few versions:

• https://github.com/n0ts/ansible-human_log

• https://gist.github.com/cliffano/9868180

If you pass the -v flag to ansible-playbook on the command line, you'll see the stdout and stderr for each task executed:

$ ansible-playbook -v playbook.yaml

Ansible also has built-in support for logging. Add the following lines to your ansible configuration file:

[defaults] 
log_path=/path/to/logfile

Ansible will look in several places for the config file:

• ansible.cfg in the current directory where you ran ansible-playbook
• ~/.ansible.cfg
• /etc/ansible/ansible.cfg